Processing box

Abstract

The utility model discloses a processing box, which is detachably arranged in electronic imaging equipment and comprises a drum unit, a driving unit, a driving unit, a driving unit, a driving unit and a driving unit, the drum unit comprises a photosensitive frame, and a photosensitive drum is rotatably supported on the photosensitive frame; a developing unit including a developing frame on which a developing roller is rotatably supported; the developing unit is pivotally connected to the drum unit, the developing unit can move around a rotation axis relative to the drum unit between a first position and a second position, the developing roller is in contact with the photosensitive drum at the first position, and the developing roller is separated from the photosensitive drum at the second position; the direction of moving from the first position to the second position is a separation direction, and the direction of moving from the second position to the first position is a contact direction; and the control structure is used for limiting the movement of the developing unit along the separation direction under the action of self-gravity, so that the processing box cannot perform drum roller separation through the self-gravity, the impact between the developing frame and the photosensitive frame contact structure is relieved, and the service life of the processing box is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic imaging equipment, in particular to a processing box. Background Art

[0002] An electronic imaging device forms an image on a recording material (such as paper) using an electronic photographic imaging process. Examples of electronic imaging devices include electronic photographic copiers, electronic photographic printers, fax machines, word processors, and the like. The cartridge includes at least one of an electronic photographic photosensitive drum as a photosensitive member and a developing member (such as a developing roller) that can act on the drum, and the photosensitive member and the developing member may also be integrally constructed as a cartridge (which may be referred to as a process cartridge) that can be detachably mounted in the electronic imaging device. The frame including the photosensitive member in the process cartridge is a photosensitive frame, and the frame including the developing member is a developing frame.

[0003] During the operation of the electronic imaging device, the developing roller contacts and presses the photosensitive drum, so that the developer on the developing roller is transferred to the surface of the photosensitive drum forming a specific electrostatic latent image to complete the development process. However, when the developing roller contacts the photosensitive drum during the stoppage of the electronic imaging device, the developer carried on the developing roller is unnecessarily deposited on the photosensitive drum, and such developer is deposited on the recording material, resulting in the contamination of the recording material; and due to the long-term friction between the photosensitive drum and the developing roller, the deterioration of the developing roller and / or the developer is accelerated. Regardless of whether an elastic layer is provided on the surface of the developing roller, the above problems may occur. Therefore, in order to solve the above technical problems, it is necessary to separate the photosensitive drum from the developing roller during the period when the electronic imaging device is not performing the development work to extend the service life of both. The processing box of the prior art relies on the gravity of the developing frame to separate. During the separation process, since the weight of the toner in the developing frame changes with the amount of toner used, the difficulty of separation by relying on the dead weight of the developing frame changes, and the speed and stability of the drum roller separation will be affected by the reduction of the residual toner. At the same time, when the residual toner in the processing box is large, the mass of the developing box is large, which causes rigid collision between structures when separating by dead weight, which will cause wear and even damage to the processing box components in the long run. Utility Model Content

[0004] According to one aspect of the utility model, there is provided a processing cartridge which can be detachably installed in an electronic imaging device, comprising:

[0005] A drum unit, comprising a photosensitive frame, on which a photosensitive drum is rotatably supported, and the photosensitive drum extends along a first direction;

[0006] A developing unit, comprising a developing frame, on which a developing roller is rotatably supported, and the developing roller extends along a first direction;

[0007] The developing unit is pivotally connected to the drum unit, and the developing unit can move around a rotation axis relative to the drum unit between a first position and a second position, when in the first position, the developing roller is in contact with the photosensitive drum, and when in the second position, the developing roller is separated from the photosensitive drum; the direction of movement from the first position to the second position is the separation direction, and the direction of movement from the second position to the first position is the contact direction;

[0008] Also includes:

[0009] The control structure is used to limit the movement of the developing unit along the separation direction under the action of its own gravity.

[0010] In some embodiments, a separation member is further included, wherein the separation member is used to provide or receive a separation force to move the developing unit from the first position to the second position along a separation direction.

[0011] In some embodiments, the separating member is a first type of elastic member, and the first type of elastic member is disposed between the photosensitive frame and the developing frame.

[0012] In some embodiments, the control structure is a second type of elastic member, which is arranged between the photosensitive frame and the developing frame. The force of the second type of elastic member is greater than or equal to the self-weight of the developing unit, thereby offsetting the self-weight that causes the developing unit to move in the separation direction.

[0013] In some embodiments, the force of the separation member is greater than the combined force of the force of the second-type elastic member and the self-weight of the developing unit.

[0014] In some embodiments, the first type of elastic member includes at least one compression spring, one end of the compression spring abuts against the photosensitive frame, and the other end of the compression spring abuts against the developing frame.

[0015] In some embodiments, the second type of elastic member includes at least one torsion spring or tension spring.

[0016] In some embodiments, the developing unit and the drum unit are swingably connected via the control structure, and the center of the control structure is a rotation axis of the developing unit.

[0017] In some embodiments, the control structure is disposed at an end position close to the developing frame along the separation direction.

[0018] In some embodiments, the developing roller and the photosensitive drum are arranged opposite to each other in a second direction intersecting the first direction, and the direction from the developing roller to the photosensitive drum is the positive direction of the second direction;

[0019] The control structure is located on the negative side of the developing roller in the second direction.

[0020] In some embodiments, a straight line passing through the center of the control structure and parallel to the second direction is defined as a first straight line, and the first straight line divides the processing box into a first area and a second area, the developing roller and the photosensitive drum are located in the first area, and the area of ​​the first area is larger than the area of ​​the second area.

[0021] In some embodiments, a straight line passing through the center of the control structure and parallel to a third direction intersecting the first direction and the second direction is defined as a second straight line, and the second straight line divides the processing box into a third area and a fourth area, the developing roller and the photosensitive drum are located in the third area, and the area of ​​the third area is larger than the area of ​​the fourth area.

[0022] In some embodiments, the developing roller is located at one end of the developing frame in the third direction, and the control structure is located at the other end of the developing frame in the third direction.

[0023] In some embodiments, the control structure includes a connecting member and a pivot portion, the pivot portion includes a first pivot hole provided on the photosensitive frame and a second pivot hole provided on the developing frame, and the connecting member passes through the first pivot hole and the second pivot hole in sequence to pivotally connect the two.

[0024] In some embodiments, the separating member is movably disposed at one end or both ends of the process box in the first direction, and the separating member can receive a separating force to drive the developing unit to move along the separating direction.

[0025] In some embodiments, the separation member does not protrude from an end portion of the process cartridge in a third direction that intersects the first direction.

[0026] In some embodiments, the separating member is rotatably disposed on the processing box, the separating member is capable of rotating between an initial position and a working position, the separating member includes a hooking portion that receives a separating force; when the hooking portion is in the working position, it is farther away from the developing frame in a second direction than when it is in the initial position, and the second direction intersects with the first direction and the third direction.

[0027] In some embodiments, the separator is provided with a front end portion, and during the process of installing the processing box to the electronic imaging device, the front end portion contacts the electronic imaging device and then rotates, so that the separator rotates from the initial position to the working position.

[0028] In some embodiments, it also includes a developing coupling that receives the driving force of the electronic imaging device, and an abutment member connected to the developing coupling, wherein the abutment member can move along a first direction and drive the developing coupling to extend and retract in the first direction.

[0029] In some embodiments, the separation member includes an abutment portion extending along a first direction, the abutment portion abuts against a separation control member of the electronic imaging device and receives a separation force, driving the developing unit to swing along a separation direction to separate the photosensitive drum and the developing roller.

[0030] In some embodiments, the separating member is swingably disposed on the developing frame about a second direction intersecting the first direction, and a contact slope is provided on the contact portion. The separating control member abuts against the contact slope to make the separating member swing about the second direction, and after the separating control member is disengaged from the contact slope, the separating member is reset.

[0031] In some embodiments, it also includes a developing coupling that receives the driving force of the electronic imaging device, and a driving gear that can engage with the developing coupling; the developing coupling is rotatably supported on the photosensitive frame, and the driving gear is rotatably supported on the developing frame, when the developing unit is in a first position, the driving gear engages with the developing coupling, and when the separating member receives the separating force to drive the developing unit to move to the second position, the driving gear disengages from the developing coupling.

[0032] In some embodiments, the control structure includes a limiting portion and a restricted portion;

[0033] The limiting portion is arranged on the photosensitive frame, the restricted portion is arranged on the developing frame, the restricted portion abuts against the limiting portion so that the movement of the developing unit along the separation direction is restricted under the action of gravity, and the developing roller always keeps in contact with the photosensitive drum.

[0034] In some embodiments, one of the limiting portion and the restricted portion is a limiting hole, and the other is a limiting column, and the limiting column can move in the limiting hole; when the developing unit moves in the separation direction due to its own gravity, the limiting column abuts against one end of the limiting hole away from the photosensitive drum, reducing the abutting pressure between the developing roller and the photosensitive drum.

[0035] In some embodiments, the limiting portion is a first rib, and the restricted portion is a second rib, and the second rib is movable relative to the first rib; when the developing unit moves in the separation direction due to its own gravity, the first rib abuts against the second rib, reducing the abutment pressure between the developing roller and the photosensitive drum.

[0036] In some embodiments, the first rib and the second rib extend along a first direction, and projections of the first rib and the second rib in a second direction intersecting the first direction at least partially overlap.

[0037] In some embodiments, the height of the second rib in the third direction is greater than that of the first rib to avoid misalignment when the first rib abuts against the second rib, and the third direction intersects with the first direction and the second direction.

[0038] In some embodiments, one of the limiting portion and the restricted portion is a limiting protrusion, and the other is a contact surface, and the limiting protrusion can move relative to the contact surface; when the developing unit moves along the separation direction due to its own gravity, the limiting protrusion abuts against the contact surface, reducing the contact pressure between the developing roller and the photosensitive drum.

[0039] In some embodiments, the developing unit further includes a force-bearing portion for receiving a contact force of an electronic imaging device, and when the force-bearing portion receives the contact force, a gap is provided between the restricted portion and the limiting portion, and the developing roller is in close contact with the photosensitive drum; when the contact force is cancelled and the developing unit moves in a separation direction relative to the drum unit due to its own gravity, the restricted portion abuts against the limiting portion to limit the swing amplitude of the developing unit, so that the developing roller maintains non-close contact with the photosensitive drum.

[0040] In some embodiments, the developing frame is provided with an arc portion, the photosensitive frame is provided with a limiting opening, and the arc outer surface of the arc portion abuts against the inner wall of the limiting opening.

[0041] In some embodiments, under the combined action of the limiting protrusion and the abutting surface, the arc portion and the limiting opening, the developing unit cannot swing relative to the drum unit, and the developing roller and the photosensitive drum always maintain close contact.

[0042] In some embodiments, the control structure includes a pressing member that protrudes from the developing frame. When the processing box is installed in the electronic imaging device, the pressing member can cooperate with the electronic imaging device to make the developing unit move along the contact direction and remain in the first position.

[0043] In some embodiments, the pressing member includes a pressing portion and a buffer portion, the pressing portion abuts against the electronic imaging device, and the buffer portion is disposed between the pressing portion and the developing frame to generate a buffer area therebetween.

[0044] In some embodiments, the pressing member further includes a mounting portion, the pressing member is mounted on the developing frame through the mounting portion, and the buffer portion is disposed between the mounting portion and the pressing portion.

[0045] In some embodiments, the buffer portion is an elastic member.

[0046] In some embodiments, the control structure includes a rotatable part, which is connected to the powder bin of the developing frame, and the developing roller is arranged in the rotatable part. The rotatable part can move relative to the powder bin and drive the developing roller to move together to achieve contact or separation between the developing roller and the photosensitive drum.

[0047] In some embodiments, during the movement of the rotatable portion, the powder bin is stationary relative to the photosensitive frame.

[0048] In some embodiments, the rotatable portion is connected to the powder bin via a flexible member.

[0049] In some embodiments, the developing unit further includes a powder feeding roller disposed in the rotatable portion, the axis of the powder feeding roller is the rotation center of the rotatable portion, and the rotatable portion can move between a first position and a second position around the rotation center.

[0050] In some embodiments, a separating member is further included, wherein the separating member is disposed between the photosensitive frame and the rotatable portion, and the separating member is configured to provide a separating force for moving the rotatable portion from the first position to the second position.

[0051] In some embodiments, developing bearings are provided at two ends of the developing unit in the first direction, and the rotatable portion is movably disposed on the developing bearings.

[0052] In some embodiments, a supporting hole for supporting the developing roller is provided on the developing bearing, and the rotatable portion can drive the developing roller to move relative to the developing bearing within the range of the supporting hole.

[0053] In some embodiments, the supporting hole is an arc-shaped hole.

[0054] In some embodiments, the flexible member is capable of deforming.

[0055] Beneficial effects of the utility model: The utility model provides a processing box, which is provided with a control structure, which can limit the movement of the developing unit along the separation direction under the action of its own gravity, so that the processing box cannot be separated from the drum roller by its own gravity, thereby reducing the impact between the contact structure of the developing frame and the photosensitive frame, and extending the service life of the processing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is a schematic diagram of the overall structure of the processing box of the first embodiment of the utility model;

[0057] Figure 2This is a schematic diagram of the exploded structure of the processing box of the first embodiment of the utility model;

[0058] Figure 3 It is a structural schematic diagram of the non-driving end of the processing box of the first embodiment of the utility model;

[0059] Figure 4 It is a side structural schematic diagram of the processing box of the first embodiment of the utility model;

[0060] Figure 5 This is a schematic diagram of the overall structure of the processing box of the second embodiment of the utility model;

[0061] Figure 6 This is a schematic diagram of the exploded structure of the processing box of the second embodiment of the utility model;

[0062] Figure 7 This is a schematic structural diagram of a drum unit according to Embodiment 2 of the present utility model;

[0063] Figure 8 for Figure 7 A partial enlarged schematic diagram in the middle;

[0064] Fig. 9 It is a partial structural schematic diagram of a developing unit according to the second embodiment of the present utility model;

[0065] Fig.10 The side structure diagram of the processing box of the second embodiment of the utility model is shown in FIG. Figure 1 ;

[0066] Fig.11 The side structure diagram of the processing box of the second embodiment of the utility model is shown in FIG. Figure 2 ;

[0067] Fig.12 It is a side sectional view of the processing box of the second embodiment of the utility model.

[0068] Fig.13 This is a schematic diagram of the structure of the processing box in the third embodiment of the present utility model;

[0069] Fig.14 This is a structural disassembly diagram of the processing box in the third embodiment of the present utility model;

[0070] Fig.15 This is a schematic diagram of the structure of the drum unit in Embodiment 3 of the present utility model;

[0071] Fig.16 This is a schematic diagram of the structure of the developing unit after the developing frame is opened in the third embodiment of the utility model;

[0072] Fig.17 This is a schematic structural diagram of the driving end of the processing box in the third embodiment of the present utility model;

[0073] Fig.18 This is a schematic diagram of the structure of the separation member in the third embodiment of the present utility model;

[0074] Fig.19 This is a schematic diagram of the structure of the developing end cover in the third embodiment of the present utility model;

[0075] Fig. 20 It is a schematic diagram of the matching part between the separation member and the developing end cover in the third embodiment of the utility model;

[0076] Fig.21 This is a schematic diagram of the abutment member and the developing drive head after being separated in the third embodiment of the present utility model;

[0077] Fig. 22 It is a side view of the drum and roller of the process box separated in the third embodiment of the utility model;

[0078] Fig.23 This is a schematic structural diagram of the driving end of the processing box in the fourth embodiment of the utility model;

[0079] Fig.24 This is a schematic diagram of the structure of the separation member in the fourth embodiment of the present utility model;

[0080] Fig.25 This is a schematic diagram of the structure of the processing box in the fourth embodiment of the utility model;

[0081] Fig.26 for Fig.25 A partial enlarged schematic diagram of point B in the middle;

[0082] Fig. 27 It is a schematic diagram of the cooperation between the separation control member and the abutment inclined surface in the fourth embodiment of the utility model;

[0083] Fig.28 This is a schematic diagram of the separation control member and the abutting inclined surface after being separated in the fourth embodiment of the utility model;

[0084] Fig.29 It is a side view of the drum and roller of the process box separated in the fourth embodiment of the utility model;

[0085] Fig.30 This is a schematic diagram of the structure of the processing box in the fifth embodiment of the utility model;

[0086] Fig.31 This is a disassembled diagram of the processing box structure in the fifth embodiment of the present utility model;

[0087] Fig.32 This is a schematic diagram of the structure of the drum unit in Embodiment 5 of the present utility model;

[0088] Fig.33 This is a schematic diagram of the developing unit in Embodiment 5 of the present utility model after the developing frame is opened;

[0089] Fig.34 This is a schematic diagram of the structure of the driving end in Embodiment 5 of the present utility model;

[0090] Fig.35 It is a side view of the processing box in the fifth embodiment of the utility model;

[0091] Fig.36 for Fig.35 A partial enlarged schematic diagram of point C in the middle;

[0092] Fig.37 This is a schematic diagram of the structure of the driving end in the sixth embodiment of the utility model;

[0093] Fig.38 for Fig.37 The local enlarged schematic diagram of point D in the middle;

[0094] Fig.39 It is a side view of the processing box in the seventh embodiment of the utility model;

[0095] Fig.40 for Fig.39 The local enlarged schematic diagram of point E in the middle;

[0096] Fig.41 It is a side view of the processing box in the eighth embodiment of the present utility model;

[0097] Fig.42 It is a schematic diagram of the overall structure of the processing box of the ninth embodiment of the utility model from one angle;

[0098] Fig.43 It is a schematic diagram of the overall structure of the processing box of the ninth embodiment of the utility model from another angle;

[0099] Fig.44 This is a schematic diagram of the structure of the processing box of the ninth embodiment of the utility model when it is not placed in the electronic imaging device;

[0100] Fig.45 This is a schematic diagram of the structure of the processing box of the ninth embodiment of the utility model after being placed in the electronic imaging device;

[0101] Fig.46 It is a structural schematic diagram of a pressing member of a processing box according to a ninth embodiment of the utility model;

[0102] Fig.47 This is a schematic diagram of the overall structure of a processing box according to a tenth embodiment of the utility model;

[0103] Fig.48 It is a cross-sectional schematic diagram of a processing box according to a tenth embodiment of the utility model;

[0104] Fig.49This is a schematic diagram of the exploded structure of the processing box of the tenth embodiment of the utility model;

[0105] Fig.50 It is a schematic diagram of the partial structure of one end of the processing box in the length direction of the tenth embodiment of the utility model;

[0106] Fig.51 It is a structural diagram and a partial enlarged diagram of a processing box of Embodiment 10 of the present utility model;

[0107] Fig.52 It is a structural schematic diagram of a developing unit according to a tenth embodiment of the present utility model;

[0108] Fig.53 It is a schematic diagram of the partial structure of the developing unit of the tenth embodiment of the utility model. DETAILED DESCRIPTION

[0109] The utility model is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0110] It should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0111] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0112] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0113] In the above description, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0114] The following descriptions of directions are as follows:

[0115] The directions A1 and A2 are the first directions, the direction indicated by A1 is the positive direction of the first direction, and the direction indicated by A2 is the negative direction of the first direction;

[0116] The directions B1 and B2 are the second direction, the direction indicated by B1 is the positive direction of the second direction, and the direction indicated by B2 is the negative direction of the second direction;

[0117] The directions of C1 and C2 are the third direction, the direction pointed by C1 is the positive direction of the third direction, and the direction pointed by C2 is the negative direction of the third direction.

[0118] The first direction, the second direction and the third direction intersect each other.

[0119] The electronic imaging device uses, for example, an electronic photographic imaging process to form an image on a recording material. The electronic imaging device includes, for example, an electronic photographic copier, an electronic photographic printer (LED printer, laser printer, etc.), an electronic photographic printer-type fax machine, etc. The processing box is detachably installed in the electronic imaging device, and the processing box includes a photosensitive drum 220, a developing roller for developing an electrostatic latent image formed on the photosensitive drum 220, etc. The electronic imaging device includes a drive head, and the drive head is used to transmit the driving force of the electronic imaging device to the processing box to make the processing box work. The electronic imaging device also includes a force applying member 900.

[0120] Embodiment 1

[0121] like Figure 1 As shown, this embodiment provides a process cartridge that can be detachably mounted on an electronic imaging device, including a developing unit 100, a drum unit 200 and a driving assembly. The developing unit 100 includes a developing frame 110, a developing roller, a powder feeding roller, a stirring frame and a powder discharge knife, and the drum unit 200 includes a photosensitive frame 210, a photosensitive drum 220, a charging roller 230 ( Fig.15 ) and a cleaning scraper. The process box is roughly in the shape of a rectangular box, which has a length in the first direction (A1 and A2 directions), a width in the second direction (B1 and B2 directions), and a height in the third direction (C1 and C2 directions); the developing unit 100 and the drum unit 200 are arranged opposite to each other in the second direction, the direction from the developing unit 100 to the drum unit 200 is the B1 direction, one end of the process box along the C1 direction is the upper end, and one end along the C2 direction is the lower end, the photosensitive drum 220 is arranged at the upper end of the drum unit 200, and the developing roller is arranged at the upper end of the developing unit 100. One end of the process box along the B1 direction is the front end, one end along the B2 direction is the rear end, one end of the process box along the A1 direction is the driving end, and one end along the A2 direction is the non-driving end.

[0122] like Figure 1 As shown, the length direction of the developing frame 110 extends along the first direction. The developing frame 110 includes a powder bin, a developing bearing 102 and a developing end cover 101. The powder bin is used to contain carbon powder. The powder bin is roughly in the shape of a long box. The developing frame 110 is provided with a developing bearing 102 supporting a developing roller, a powder feeding roller and a stirring frame at both ends of the length direction. The developing end cover 101 is arranged on the outside of the developing bearing 102 to protect the driving assembly located on the outside of the developing bearing 102. The developing roller, the powder feeding roller and the stirring frame rotate under the action of the driving assembly. The axial directions of the developing roller, the powder feeding roller and the stirring frame are all along the length direction (first direction) of the developing frame 110. The carbon powder in the powder bin is stirred by the stirring frame to prevent the carbon powder in the powder bin from agglomerating. At the same time, the carbon powder can also be transported to the direction of the powder feeding roller. The powder feeding roller transports the carbon powder to the developing roller and is adsorbed by the charged developing roller.

[0123] like Figure 1 As shown, the photosensitive frame 210 also has a length direction, which is consistent with the length direction of the developing frame 110 (both along the A1 and A2 directions). The photosensitive end caps 201 supporting the photosensitive drum 220 are arranged at both ends of the photosensitive frame 210 in the first direction. The toner adsorbed by the developing roller transfers the toner to the photosensitive drum 220 through the potential difference between the developing roller and the photosensitive drum 220. The toner on the photosensitive drum 220 is then transferred by the transfer belt of the electronic imaging device to form an image on the recording material (such as paper). The charging roller 230 ( Fig.15) is used to charge the surface of the photosensitive drum 220 with a uniform charge so that the photosensitive drum 220 can absorb toner.

[0124] like Figure 1 and Figure 3 As shown, the driving assembly includes a photosensitive coupling 310, a developing coupling 320, a developing roller gear 340, a powder feeding roller gear 350, a stirring frame gear 360, a first idler wheel 370, and a second idler wheel 380. The driving assembly can be arranged at one end and / or both ends of the processing box in the first direction (length direction). Specifically, the photosensitive coupling 310 is arranged at one end (preferably the driving end / one end in the A1 direction) of the photosensitive drum 220 in the length direction, and is used to engage with the photosensitive driving head of the electronic imaging device to receive the driving force and drive the photosensitive drum 220 to rotate. The developing coupling 320 is arranged at the driving end of the developing frame 110 and is located on the outside of the developing bearing 102. The developing coupling 320 is sleeved on the part of the shaft of the powder feeding roller extending from the developing bearing 102. The developing end cover 101 is provided with an opening for exposing the developing coupling 320. The developing coupling 320 engages with the developing driving head of the electronic imaging device and receives the driving force. The developing roller gear 340, the powder feeding roller gear 350, the stirring frame gear 360, the first idler gear 370, and the second idler gear 380 are arranged at the non-driving end (the end in the A2 direction) of the developing frame 110. The developing roller gear 340, the powder feeding roller gear 350, and the stirring frame gear 360 are respectively sleeved on the parts of the developing roller, the powder feeding roller, and the stirring frame shaft extending out of the developing bearing 102 at the non-driving end (the end in the A2 direction). The developing roller gear 340 and the powder feeding roller gear 350 The first idler gear 370 is meshed with the second idler gear 380, the second idler gear 380 is meshed with the stirring frame gear 360, the developing coupling 320 receives the driving force to drive the powder feeding roller to rotate, the powder feeding roller gear 350 rotates synchronously, the developing roller gear 340 and the stirring frame gear 360 are directly or indirectly meshed with the powder feeding roller gear 350, so that the developing coupling 320 transmits the received driving force, thereby driving the developing roller, the powder feeding roller and the stirring frame to rotate.

[0125] During the operation of the electronic imaging device, the developing roller and the photosensitive drum 220 need to be in close contact. When the electronic imaging device is not working, the developing roller and the photosensitive drum 220 need to be separated by a certain distance to avoid long-term contact between the developing roller and the photosensitive drum 220, which may cause the photosensitive drum 220 to be contaminated by excess developer attached to the developing roller, or the developing roller may be deformed or the photosensitive drum 220 may be worn.

[0126] like Figures 1 to 4As shown, based on this, the drum unit 200 and the developing unit 100 in this embodiment are configured to be able to move relative to each other, so that the developing roller and the photosensitive drum 220 can be in contact when the electronic imaging device is working and separated when not working. In this embodiment, the developing unit 100 and the drum unit 200 are pivotally connected. Specifically, the drum unit 200 and the developing unit 100 are pivotally connected with the connecting portion 300 as the center, and the central axis of the connecting portion 300 defines the axis (rotation axis / swing center) of the developing unit 100 relative to the drum unit 200. The connecting portion 300 includes a connecting member 301 and a pivoting portion, and the pivoting portion includes a first pivot hole 211 provided on the photosensitive frame 210 and a second pivot hole 111 provided on the developing frame 110. The connecting member 301 passes through the first pivot hole 211 and the second pivot hole 111 in sequence to pivot the two. The first pivot holes 211 are respectively arranged at the two ends of the photosensitive frame 210 in the first direction, and the second pivot holes 111 are respectively arranged at the two ends of the developing frame 110 in the first direction (specifically, they can be on the developing bearings 102 opened at the two ends). There are two connecting members 301, which are respectively pivotally connected to the first pivot holes 211 and the second pivot holes 111 located at the two ends in the first direction. The connecting members 301 are arranged at the two ends of the processing box in the first direction, and there are two connecting members 301. Specifically, the connecting members 301 can be components such as screws or pins. In this embodiment, the connecting portion is located directly below the developing roller. When viewed along the third direction, the rotation axis of the developing unit 100 swinging relative to the drum unit 200 is located within the projection range of the developing roller. In the second direction, the connecting portion is approximately located in the middle of the processing box.

[0127] The posture of the drum unit 200 when the process cartridge is removed from the electronic imaging device is the removal posture ( FIG. Figure 3 When the drum unit 200 is in the removal posture, the developing unit 100 can move between the first position and the second position relative to the drum unit 200 along the rotation axis. Figure 3 As shown in FIG. 1 , in the first position, the developing roller contacts the photosensitive drum 220, and in the second position, the developing roller is separated from the photosensitive drum 220. The direction in which the developing unit 100 rotates relative to the drum unit 200 about the rotation axis includes a separation direction D1 and a contact direction D2 opposite to the separation direction D1. The developing unit 100 rotates from the first position to the second position along the separation direction D1 to Figure 3 The separation direction D1 is clockwise when viewed from an angle; the developing unit 100 rotates from the second position to the first position along the contact direction D2 to Figure 3 , the contact direction D2 is counterclockwise.

[0128] When the drum unit 200 is in the removal posture, the developing unit 100 has a tendency to move toward the second position along the separation direction D1 under the action of its own gravity, that is, its own gravity can cause the developing unit 100 to rotate to the second position along the separation direction D1.

[0129] like Figures 1 to 4 As shown, in this embodiment, the processing box also includes a control structure for limiting the movement of the developing unit along the separation direction D1 under the action of its own gravity; specifically, the control structure in this embodiment is a second type of elastic member 420, and the second type of elastic member 420 is arranged between the photosensitive frame 210 and the developing frame 110. When the drum unit 200 is in a removal posture, the second type of elastic member 420 can offset the self-gravity that causes the developing unit 100 to move to the second position, thereby limiting the movement of the developing unit 100 along the separation direction under the action of its own gravity, that is, the self-gravity of the developing unit 100 cannot cause the developing unit 100 to rotate along the separation direction D1, thereby maintaining the first position. Specifically, the second type elastic member 420 includes at least one torsion spring, preferably, the number of torsion springs is two, that is, the second type elastic member 420 is arranged near the rotation axis in the third direction, preferably, the loop portion of the torsion spring is arranged coaxially with the rotation axis, and the loop portion can be sleeved on the first pivot hole 211 of the photosensitive frame 210 or the second pivot hole 111 of the developing frame 110 or sleeved on the connecting member 301, one arm of the torsion spring abuts against the photosensitive frame 210, and the other arm abuts against the developing frame 110. When the drum unit 200 is in the removal posture, the torsion spring is in a compressed / torsional state, and the force of the torsion spring on the developing unit 100 is along the contact direction D2 opposite to the separation direction D1, that is, it has a force to rotate the developing unit 100 in the counterclockwise direction, and the force of the torsion spring is greater than or equal to the self-weight of the developing unit 100, thereby offsetting the self-weight of the developing unit 100, that is, the self-weight cannot cause the developing unit 100 to rotate to the second position along the separation direction D1.

[0130] like Figures 1 to 4As shown, after the second type of elastic member 420 offsets the gravity, the developing unit 100 cannot move to the second position under the gravity, so that the developing roller is separated from the photosensitive drum 220. Therefore, in this embodiment, the processing box is also provided with a separation member, which is used to provide a force to move the developing unit 100 from the first position to the second position. In this embodiment, the separation member is a first type of elastic member 410, which is arranged between the photosensitive frame 210 and the developing frame 110. The first type of elastic member 410 includes at least one compression spring, and the elastic expansion direction of the compression spring extends along the second direction. One end of the compression spring abuts against the photosensitive frame 210, and the other end abuts against the developing frame 110. The second type of elastic member 420 is arranged at the upper end of the processing box in the third direction, that is, close to the photosensitive drum 220. Preferably, there are two first-type elastic members 410 , which are respectively arranged at the two ends of the photosensitive frame 210 and the developing frame 110 in the first direction. The photosensitive frame 210 and the developing frame 110 may be provided with connecting structures such as protrusions / grooves for connecting the first-type elastic members 410 .

[0131] The force of the first type elastic member 410 on the developing unit 100 causes the developing unit 100 to rotate around the rotation axis along the separation direction D1, that is, the force of the first type elastic member 410 on the developing unit 100 is in the clockwise direction, and the developing unit 100 rotates from the first position to the second position along the separation direction D1. The combined force of the force of the second type elastic member 420 and the self-weight of the developing unit 100 is greater than or equal to 0, and the force of the first type elastic member 410 is greater than the combined force of the force of the second type elastic member 420 and the self-weight, which can ensure that the developing unit 100 can rotate to the second position, and ensure that the photosensitive drum 220 and the developing roller can be stably separated.

[0132] A force-bearing portion 112 is also provided on the developing unit 100 for receiving the contact force applied by the force-applying member 900 of the electronic imaging device. The force-bearing portion 112 is a protruding structure arranged on the developing frame 110. The force-bearing portion 112 is arranged near the upper end of the developing frame 110 in the third direction. The force-bearing portion 112 can be arranged at one end or both ends of the developing frame 110 in the length direction.

[0133] like Figures 1 to 4 As shown, when the processing box is installed in the electronic imaging device but no developing work is performed, the drum unit 200 is in a removal posture. Since the force of the first type of elastic member 410 is greater than the combined force of the force of the second type of elastic member 420 and the self-gravity, the developing unit 100 rotates to the second position and remains in the second position under the action of the first type of elastic member 410, and the developing roller and the photosensitive drum 220 are always in a separated state. At this time, the second type of elastic member 420 is in a compressed state due to offsetting the self-gravity.

[0134] like Figures 1 to 4As shown, when developing work is required, the force-applying member 900 of the electronic imaging device moves in the direction of B1, and after contacting the force-bearing portion 112, a contact force along the direction of B1 is applied to the force-bearing portion 112, and the contact force acts on the entire developing unit 100. Under the action of the contact force, the force of the first-type elastic member 410 is overcome, so that the first-type elastic member 410 is compressed and deformed, and the developing unit 100 rotates from the second position to the first position around the rotation axis along the contact direction D2 (counterclockwise), and the upper end of the developing unit 100 moves in the direction close to the photosensitive drum 220, and the developing roller contacts the photosensitive drum 220, and the two arms of the second-type elastic member 420 return to the original state or the stretched state. At this time, the contact force and the combined force of the force of the second-type elastic member 420 and the self-weight of the developing unit 100 are greater than the force of the first-type elastic member 410, and the developing roller maintains a contact state with the photosensitive drum 220, and the developing work can be performed.

[0135] like Figures 1 to 4 As shown, when the developing work is completed, the force-applying member 900 of the electronic imaging device moves in the direction of B2, the contact force is removed, the elastic deformation of the first type of elastic member 410 is restored, and the developing unit 100 is pushed to rotate from the first position to the second position along the separation direction D1 (clockwise) around the rotation axis, and the upper end of the developing unit 100 moves in the direction away from the photosensitive drum 220, the developing roller is separated from the photosensitive drum 220, and the second type of elastic member 420 is compressed. Since the force of the first type of elastic member 410 is greater than the combined force of the force of the second type of elastic member 420 and the self-weight of the developing unit 100, the processing box remains in a state of separation between the drum and the roller, waiting for the next developing work to start or be removed from the electronic imaging device.

[0136] The processing box of this embodiment is provided with two types of elastic members between the developing frame 110 and the photosensitive frame 210, wherein the force provided by the first type of elastic member 410 enables the processing box to complete the drum-roller separation process to ensure the stability of the separation process; wherein the force provided by the second type of elastic member 420 offsets the self-weight of the developing frame 110, and when the force-applying component in the printer removes the thrust on the developing frame 110, due to the action of the second type of elastic member 420, the separation of the developing frame 110 is only due to the action of the first type of elastic member 410, thereby alleviating the impact between the contact structure of the developing frame 110 and the photosensitive frame 210, and prolonging the service life of the processing box. In addition to the one compression spring and one torsion spring provided in this embodiment, the first type of elastic member and the second type of elastic member of this embodiment can also be two tension springs with different tensions, two compression springs with different compression degrees, etc., and the first type of elastic member can also be a tension spring, a torsion spring, etc.

[0137] Embodiment 2

[0138] This embodiment provides another processing box. Compared with the first embodiment, the difference lies in the control structure. The connecting part in the first embodiment is omitted, and the control structure is used instead of the connecting part to pivotally connect the developing unit 100 and the drum unit 200.

[0139] like Figures 5 to 12 As shown, in this embodiment, the control structure includes a connecting member 301a and a pivoting portion, the pivoting portion includes a first pivoting hole 211a provided on the photosensitive frame 210 and a second pivoting hole 111a provided on the developing frame 110, the connecting member 301a passes through the first pivoting hole 211a and the second pivoting hole 111a in sequence and then pivots the two, that is, the centers of the connecting member 301a, the first pivoting hole 211a and the second pivoting hole 111a coincide, and the central axis of the three is the central axis of the control structure, and is also the rotation axis of the developing unit 100 swinging relative to the drum unit 200. The control structure is the same as the structure of the connecting portion 300 of the first embodiment, and only the position of the control structure on the process cartridge is different.

[0140] like Figure 5 , Figure 6 , Figures 10 to 12 As shown, in this embodiment, the control structure is located on the rear side of the developing roller 120 in the second direction (i.e., on the side in the B2 direction) in the second direction. The control structure is arranged at a position close to the end of the developing frame 110 along the separation direction (D1 direction) (i.e., arranged close to the C2 direction end / lower end of the developing frame 100). The developing roller 120 is located at one end of the developing frame 110 (one end in the C1 direction) in the third direction, and the control structure is close to the other end of the developing frame 110 (one end in the C2 direction) in the third direction. That is, the axis of the control structure is located on the B2 and C2 directions (i.e., the rear lower side) of the axis of the developing roller 120. When viewed along the A2 direction, the central axis of the control structure does not overlap with the axis of the developing roller 120, and when viewed along the third direction, the central axis of the control structure is located outside the projection range of the developing roller 120.

[0141] like Fig.10 As shown, observing along the A2 direction, a straight line passing through the center of the control structure and parallel to the second direction is defined as the first straight line L1. The first straight line L1 divides the processing box into a first area E1 and a second area E2 in the third direction. The developing roller 120, the powder feeding roller and the photosensitive drum 220 are all located in the first area E1. The area of ​​the first area E1 is larger than that of the second area E2.

[0142] like Fig.11As shown, observing along direction A2, a straight line passing through the center of the control structure and parallel to the third direction is defined as a second straight line L2, and the second straight line L2 divides the processing box into a third area E3 and a fourth area E4 in the second direction, and the developing roller 120, the powder feeding roller and the photosensitive drum 220 are located in the third area E3, and the area of ​​the third area E3 is larger than that of the fourth area E4.

[0143] like Figure 7 As shown, in this embodiment, the process box is further provided with a separation member (a first type elastic member 410) which is the same as that in the first embodiment, for providing a force to move the developing unit 100 from the first position to the second position.

[0144] The force exerted by the first type elastic member 410 on the developing unit 100 causes the developing unit 100 to rotate along the separation direction D1 around the axis (rotation axis) of the control structure, that is, the force exerted by the first type elastic member 410 on the developing unit 100 is in the clockwise direction, and the developing unit 100 rotates from the first position to the second position along the separation direction D1.

[0145] Further, such as Figures 6 to 9 , Fig.12 As shown, the photosensitive frame 210 is provided with a limiting portion 212, and the developing frame 110 is provided with a limited portion 113 that cooperates with the limiting portion 212. The limiting portion 212 cooperates with the limited portion 113 to limit the swing range of the developing unit 100 in the separation direction D1. Specifically, the limited portion 113 is a protrusion provided on the side wall of the developing frame 110 at one end of the A1 direction, and the protrusion protrudes from the side wall of the developing frame 110 along the A1 direction. The limited portion 113 is provided close to the control structure and is located on the positive direction side (the B1 direction side) of the control structure in the second direction. The limiting portion 212 is a groove portion formed on the photosensitive frame 210, and the protruding portion is located in the groove portion. The groove portion can be provided with groove walls at both the C1 and C2 direction ends, or can be provided with groove walls only at the C1 direction end. When the developing unit 100 swings along the separation direction D1 until the restricted portion 113 abuts against the limiting portion 212 (abuts against the groove wall at the C1 direction end of the groove portion), the movement of the developing unit in the separation direction D1 is limited, and the developing unit 100 cannot continue to move in the separation direction D1, thereby preventing the processing box from being over-separated during the separation of the drum roller.

[0146] like Figures 5 to 12 As shown, when the processing box is installed in the electronic imaging device but no developing work is performed, the processing box is maintained in the second position under the action of the first type of elastic member 410 (separating member), and the developing roller 120 and the photosensitive drum 220 are always in a separated state.

[0147] like Figures 5 to 12As shown, when developing work is required, the force-applying member of the electronic imaging device moves in the direction of B1, and after contacting the force-bearing portion 112, a contact force along the direction of B1 is applied to the force-bearing portion 112, and the contact force acts on the entire developing unit 100. Under the action of the contact force, the force of the first type of elastic member 410 is overcome, so that the first type of elastic member 410 is compressed and deformed, and the developing unit 100 rotates from the second position to the first position along the contact direction D2 (counterclockwise) around the axis of the control structure, and the upper end of the developing unit 100 moves in the direction close to the photosensitive drum 220, and the developing roller 120 contacts and maintains a contact state with the photosensitive drum 220, so that the developing work can be performed.

[0148] like Figures 5 to 12 As shown, when the developing work is completed, the force-applying member of the electronic imaging device moves in the direction of B2, the contact force is removed, and the elastic deformation of the first type of elastic member 410 is restored, pushing the developing unit 100 to rotate from the first position to the second position along the separation direction D1 (clockwise) around the axis of the control structure, and the upper end of the developing unit 100 moves in the direction away from the photosensitive drum 220, and the developing roller 120 is separated from the photosensitive drum 220. When the restricted portion 113 rotates with the developing frame 110 to abut against the limiting portion 212, the rotational movement of the developing unit 100 stops, and the processing box remains in a state of separation between the drum and the roller under the action of the first type of elastic member 410, waiting for the next developing work to start or be removed from the electronic imaging device.

[0149] The control structure of the photosensitive frame 210 and the developing frame 110 of the processing box of this embodiment is arranged at the end close to the developing frame 110 along the separation direction D1, so that the processing box cannot rely on its own gravity to separate the drum and roller, and the moving distance of the developing unit 100 when separating may be reduced, which solves the problem in the prior art that when the connecting part is arranged approximately in the middle of the processing box, when there is a lot of residual toner in the processing box, the mass of the developing unit 100 is large, and when separated, the moving distance of the developing unit 100 will be large, resulting in rigid collision between structures, which will cause wear and even damage to the processing box parts in the long run, thereby ensuring the service life of the processing box.

[0150] The other structures of the processing box of this embodiment are the same as those of the first embodiment and will not be described again.

[0151] Embodiment 3

[0152] This embodiment provides another processing box, which is different from the first embodiment in that the control structure is different, the separation member structure is different, and an abutment member is also provided.

[0153] like Figures 12 to 15As shown, in this embodiment, in order to ensure that the developing roller 120 and the photosensitive drum 220 are continuously in contact with each other during the developing operation, a control structure (a second type of elastic member 420a) is provided between the developing frame 110 and the photosensitive frame 210, which is used to limit the movement of the developing unit 100 along the separation direction D1 under the action of its own gravity. The second type of elastic member 420a is located on the upper side (C1 direction side) of the processing box. The second type of elastic member 420a adopts a tension spring, and its two ends are respectively connected to the developing frame 110 and the photosensitive frame 210. The second type of elastic member 420a offsets the effect of the self-gravity of the developing unit 100, limits the movement of the developing unit 100 along the separation direction D1 under the action of its own gravity, and keeps the developing unit 100 in the first position, and the developing roller 120 and the photosensitive drum 220 remain in contact with each other.

[0154] like Figures 13 to 21 As shown, the abutment 150 is slidably arranged at the driving end (the end in the A1 direction) of the developing unit 100, and can be specifically arranged on the developing end cover 101. The developing end cover 101 has a protruding portion 1011, and the interior of the protruding portion 1011 is a hollow structure. The protruding portion 1011 is provided with an opening 1012 and a slot 1013. The opening 1012 is located on the A1 side of the developing end cover 101, and is used for the developing coupling 320 to be telescopically moved on the developing end cover 101, so that the developing coupling 320 can be exposed from the opening 1012. The slot 1013 is located on the B2 side of the opening 1012, and is used to provide a space for the abutment 150 to be inserted. The abutment 150 can move in the slot 1013. The abutment 150 is generally a rectangular body structure, and its B1 side is engaged with the developing coupling 320. Specifically, the circumferential side of the developing coupling 320 is provided with There is a clamped portion 321, which can be a clamping rib arranged around the circumferential side of the developing coupling 320. A clamping portion 151 matching the clamped portion 321 is provided on one side of the abutment 150 in the B1 direction. The clamping portion 151 is a clamping groove structure, and the clamping groove structure has an arc-shaped contour matched with the circumferential side of the developing coupling 320. When the clamping groove is clamped with the clamping rib, the arc-shaped contour of the clamping portion 151 fits the circumferential side of the developing coupling 320, so that the cooperation between the clamping portion 151 and the clamped portion 321 does not affect the rotation of the developing coupling 320, and through the abutment of the clamping portion 151 with the clamped portion 321, the abutment 150 can drive the developing coupling 320 to move along the first direction.

[0155] like Fig. 20 and Fig.21 As shown, the abutment member 150 can abut against the separation control member 800 to receive the drive of the separation control member 800, so that the abutment member 150 can move along the A1 direction in the slot 1013. Preferably, one side of the abutment member 150 in the B2 direction is set as a plane structure, which abuts against the separation control member 800.

[0156] like Fig.21 As shown, the processing box also includes a third type of elastic member 160, one end of the third type of elastic member 160 is connected to the developing frame 110, and the other end is connected to the abutment member 150. The third type of elastic member 160 can adopt a tension spring. Through the third type of elastic member 160, the abutment member 150 can be reset by elastic force when it is out of contact with the separation control member 800, so that it can be moved and reset in the slot 1013 (move along the A2 direction), thereby realizing the function of the developing coupling 320 to extend and retract in the developing end cover 101.

[0157] like Fig.17 and Fig.18 As shown, the separator 430 is movably arranged on the processing box, and is used to receive the separation force of the electronic imaging device to drive the developing unit 100 to move along the separation direction D1. The separator 430 is a bent strip structure, and the outer shape of the separator 430 is roughly "Z"-shaped. The separator 430 can be arranged on the side wall of the developing frame 110 at one end or both ends of the processing box in the first direction, that is, arranged on the side wall of the driving end and / or the non-driving end. Specifically, the separator 430 can be swingably arranged on the plane on the C1 direction side of the developing end cover 101. In the third direction, the separator 430 is located on the upper side of the developing coupling 320 and the abutment 150, and the separator 430 is located between the two ends of the processing box in the third direction, that is, the separator 430 does not protrude from the processing box in the third direction. During the installation of the processing box, the separator 430 will not interfere with the electronic imaging device in the third direction. The separating member 430 includes a hooking portion 431 and a front end portion 432. A rotating portion 433 is provided in the middle of the separating member 430 and is located between the hooking portion 431 and the front end portion 432. The separating member 430 is swingably arranged on the developing end cover 101 around the rotating portion 433. Specifically, the rotating portion 433 is a socket, which is inserted into the rotating portion 433 through a pin / pin shaft and connected to the developing end cover 101, so that the separating member 430 swings around the position of the rotating portion 433. The swinging axis of the separating member 430 extends along the third direction, that is, the separating member 430 swings within the plane formed by the first direction and the second direction.

[0158] like Fig.17 , Fig.18 and Fig. 20 As shown, the hook portion 431 is a curved strip structure with a hook claw structure at its end. The hook portion 431 is used to receive the separation force of the separation control member 800. Specifically, the separation control member 800 abuts against the hook claw of the hook portion 431. The hook portion 431 has a component extending along the first direction and a component extending along the second direction. Since the separation member 430 can be arranged at the driving end and / or the non-driving end of the processing box, this embodiment takes the separation member 430 being arranged at the driving end as an example, and the hook portion 431 has extension components along the A2 direction and the B2 direction.

[0159] It should be noted that the running trajectory of the separation control member 800 in the plane formed by the first direction and the second direction is an arc-shaped path, and has corresponding components in the first direction and the second direction. Therefore, correspondingly, the hook portion 431 also has corresponding force components, so that the hook portion 431 has a shape that conforms to the running trajectory of the separation control member 800, and can receive the separation force transmitted by the separation control member 800. The hook portion 431 abuts against the separation control member 800, so that the separation member 430 has a separation force moving along the second direction (B2 direction), driving the developing unit 100 to swing relative to the drum unit 200 along the separation direction D1, thereby separating the developing roller 120 from the photosensitive drum 220.

[0160] like Fig.17 , Fig.18 and Fig. 20 As shown, the front end portion 432 is arranged opposite to the hook portion 431 in the first direction of the separating member 430, and the front end portion 432 is also the end structure of the separating member 430, and its end has a rounded structure, and the separating member 430 can swing between the initial position and the working position. In the initial position, the front end portion 432 is located at the front end of the processing box (A1 direction end), and when the processing box is inserted into the electronic imaging device, since the processing box is not fully installed in place at this time, as the processing box continues to move, the front end portion 432 first abuts against the side wall of the electronic imaging device and the separating member 430 is pushed to swing with the installation action. The swing of the separating member 430 causes the hook portion 431 to shift relative to the initial position to reach the position of engaging the separating control member 800 (i.e., the working position), and in the second direction, the hook portion 431 is farther away from the developing frame 110 in the working position than in the initial position, thereby facilitating the abutment with the separating control member 800. In the initial position, the hook portion 431 is closer to the developing frame 110 and also prevents the hook portion 431 from interfering with other components of the electronic imaging device during installation.

[0161] Furthermore, in order to enable the separation member 430 to remain in the initial position before being fully installed, the processing box is also provided with a retaining member. Specifically, the retaining member can be a torsion spring (not shown), which is used to maintain the separation member 430 in the initial position. In the initial position, the hook portion 431 is close to the developing unit 100 (the hook portion 431 is as close to the developing frame 110 as possible). When the front end 432 abuts against the side wall of the electronic imaging device, the torsion force of the torsion spring is overcome, so that the hook portion 431 swings and is located in the working position. In the working position, the hook portion 431 is away from the developing unit 100 (the hook portion 431 reaches the position of the engagement separation control member 800). The above structure avoids the problem of too large an opening and closing angle between the hook portion 431 and the developing frame 110 in the B2 direction, which causes interference when the processing box is installed.

[0162] When the processing box starts to develop, the separation control member 800 of the electronic imaging device moves simultaneously in the direction close to the B1 end and the A1 end of the processing box, abuts against the abutment 150 and drives the abutment 150 to move in the A1 direction, so that the developing coupling 320 engaged with the abutment 150 extends in the A1 direction to engage with the developing drive head and receive the driving force of the electronic imaging device, and the third type of elastic member 160 is deformed (the tension spring is stretched) when the abutment 150 moves.

[0163] like Fig. 22 As shown, when the developing work stops, the separation control member 800 of the electronic imaging device moves in the direction away from the B1 end and the A1 end of the processing box, and the separation control member 800 abuts against the hook portion 431 of the separation member 430 and receives the separation force, so that the developing unit 100 swings from the first position to the second position along the separation direction D1, and the developing roller 120 and the photosensitive drum 220 are separated. At the same time, the abutment member 150 is no longer affected by the abutment of the separation control member 800, and under the action of the third type of elastic member 160, the abutment member 150 and the developing coupling 320 move along the A2 direction to the retracted position.

[0164] In this embodiment, a second type of elastic member 420a (control structure) is provided on the processing box to offset the self-gravity of the developing unit 100, so that the developing unit 100 is maintained in the first position, the developing roller 120 is in contact with the photosensitive drum 220, and the processing box is also provided with a separation member 430, which can receive the separation force output by the separation control member 800 of the electronic imaging device to achieve drum-roller separation. The separation member 430 is provided on the side wall of the processing box, and extends outward along the second direction relative to the developing frame 110. The position of the separation member 430 can better adapt to the installation direction of the processing box, and can ensure that the upper and lower sides of the processing box will not interfere with the installation, and will not interfere with or damage the separation member 430.

[0165] The other structures of the processing box of this embodiment are the same as those of the first embodiment and will not be described again.

[0166] Embodiment 4

[0167] like Fig.23 As shown, this embodiment provides another processing box, which is different from the third embodiment in that the abutment member is omitted and a driving gear is provided; the structure of the separation member is different.

[0168] like Fig.23As shown, the processing box structure of this embodiment is different from the processing box structure of the first embodiment in that, since the driving structure of the developing unit 100 is complex and difficult to engage, and the collision between the structures will also cause wear of the developing coupling 320 structure, the developing coupling 320 of this scheme is rotatably arranged on the photosensitive end cover 201 and supported by the photosensitive end cover 201. The developing coupling 320 cannot be extended or retracted, nor does it move with the drum roller contact / separation process of the developing unit 100. The developing coupling 320 is also not connected to the shaft of the powder feeding roller 130, that is, the developing coupling 320 cannot directly drive the powder feeding roller 130 to rotate when rotating. When the drum roller of the processing box is separated, the developing coupling 320 is always engaged with the developing drive head of the electronic imaging device. A driving gear 330 is provided on the A1 direction side of the developing frame 110. The driving gear 330 is coaxially arranged at the end of a driving shaft (not shown). The driving shaft is passed through the developing frame 110 along the first direction. A corresponding gear is coaxially arranged at the A2 direction end of the driving shaft, which is meshed with the developing roller gear 340, the powder feeding roller gear 350, and the stirring gear to transmit the driving force, that is, the developing roller 120, the powder feeding roller 130 and the stirring frame 140 are driven through the non-driving end. The driving gear 330 is supported on the developing frame 110. When the developing unit 100 moves to the second position (drum roller separation), the driving gear 330 also moves along the separation direction D1. The driving gear 330 disengages from the developing coupling 320 and stops receiving the driving force of the developing coupling 320. The developing coupling 320 is always engaged with the developing drive head and rotates, that is, when the drum roller is separated, the developing coupling 320 is in an idling state. When the developing unit 100 moves to the first position along the contact direction D2 (drum roller contact), the driving gear 330 engages with the developing coupling 320, and the driving force can be transmitted to the non-driving end.

[0169] like Fig.24 and Fig.25As shown, the separator 440 of this embodiment is set at the non-driving end as an example. The separator 440 can be swung and reset on the developing frame 110. Of course, the separator 440 can also be set on the developing end cover 101. As in the embodiment, in the third direction, the separator 440 is located between the two ends of the processing box in the third direction, that is, the separator 440 does not protrude from the processing box in the third direction, and does not interfere with the two ends of the processing box in the third direction. The outer shape of the separator 440 is an "L"-shaped structure. The separator 440 includes a contact portion 441 and a positioning portion 442. In order to better adapt to the swing shape of the separator 440, the shape of the separator 440 extending in the second direction (B2 direction) is a cylindrical structure. A connecting through hole is provided inside the cylindrical structure. The separator 440 is sleeved on the connecting column on the developing frame 110 through the connecting through hole and can swing around the connecting column. The extending direction of the connecting column is along the B2 direction, that is, the swing axis of the separator 440 is along the second direction. The abutment portion 441 is provided at the end of the separation member along the B2 direction. The abutment portion 441 extends along the first direction. An abutment slope 4411 is provided at the end of the abutment portion 441 (the end away from the cylindrical structure). The abutment slope 4411 is closer to the end of the separation control member 800, which is convenient for abutting with the separation control member 800. An abutment plane 4412 is provided on the B1 direction side of the abutment portion 441, which is used to abut with the separation control member 800 to receive the separation force, so that the developing frame 110 is forced to swing.

[0170] like Fig.26 As shown, the positioning portion 442 is a portion protruding from the cylindrical structure of the separating member 440, which can be set as a convex strip structure. The positioning portion 442 is located on the upper side (C1 direction side) of the separating member 440, and the developing frame 110 is provided with a limiting portion 114. The limiting portion 114 is a structure protruding along the second direction (B2 direction) on the developing frame 110, and the limiting portion 114 can abut against the positioning portion 442 in the first direction. It should be noted that the initial position of the separating member 440 is a state where the positioning portion 442 abuts against the limiting portion 114, and the initial position of the separating member 440 is the same as the working position, both of which are the position where the positioning portion 442 abuts against the limiting portion 114, so that the separating member 440 can maintain a specific swinging position to facilitate the abutment portion 441 to abut against the separating control member 800. Therefore, in order to prevent the separating member 440 from excessive rotation, the required position is limited by the positioning portion 442 and the limiting portion 114. In order to enable the separating member 440 to be reset to the initial position, in the present embodiment, a tension spring (not shown) is provided to connect the separating member 440 and the developing frame 110 so that the separating member 440 has a restoring elastic force, and a hook 443 is provided on the separating member 440 to facilitate the connection with the tension spring, one end of the tension spring is connected to the hook 443, and the other end is connected to the developing frame 110 (any fixed structure).

[0171] In the initial state, the second type elastic member 420a maintains the contact state between the photosensitive drum 220 and the developing roller 120 (in the first position), and the separating member 440 is also in the initial position. When the process cartridge is installed in place in the electronic imaging device, as shown in FIG. Fig. 27 As shown, the separation control member 800 moves in the direction close to the processing box and abuts against the abutting inclined surface 4411, overcoming the elastic force of the tension spring connected to the separation member 440, so that the separation member 440 rotates and avoids the separation control member 800 by rotating against the abutting inclined surface 4411, as shown in FIG. Fig.28 As shown, the separation control member 800 then disengages from the abutting inclined surface 4411 and is located on the B1 direction side of the abutting portion 441, i.e., reaches the separation preparation position, and the separation member 440 is restored to the initial position (also the working position, capable of receiving the separation force of the separation control member 800) under the action of the tension spring. Fig.29 As shown, when the processing box stops developing, the separation control member 800 abuts against the abutment plane 4412 of the separation member 440 and applies a separation force to the separation member 440, so that the separation member 440 drives the developing frame 110 to swing to the second position along the separation direction D1, and the developing roller 120 is separated from the photosensitive drum 220.

[0172] The other structures of the processing box of this embodiment are the same as those of the first embodiment and will not be described again.

[0173] Embodiment 5

[0174] This embodiment provides a processing box, which is different from the first embodiment in that the control structure is different.

[0175] like Figure 31 to Figure 35 As shown, the control structure is arranged on the processing box. In this embodiment, the control structure is closer to the C1 direction side (upper side) of the processing box. The control structure includes a limiting portion and a limited portion. The limiting portion and the limited portion can abut against each other to overcome the effect of the self-gravity of the developing unit 100, thereby limiting the movement of the developing unit along the separation direction D1, so that the developing roller 120 and the photosensitive drum 220 are kept in contact. In this embodiment, the control structure can be arranged at the driving end or the non-driving end. Taking the driving end as an example, the limiting portion is arranged on the photosensitive frame 210, and the limited portion is arranged on the developing frame 110. The limited portion abuts against the limiting portion to limit the swing amplitude of the developing unit 100 relative to the photosensitive unit 200, thereby limiting the separation of the developing roller 120 and the photosensitive drum 220.

[0176] like Fig.32 , Fig.33 , Fig.36As shown, the limiting portion is constructed as a limiting hole 212a, which is recessed along the first direction or passes through one end (the A1 direction end) of the photosensitive frame 210, and the limiting hole 212a is preferably arranged on the photosensitive end cover 201 and located on the B2 direction side of the photosensitive end cover 201. The shape of the limiting hole 212a is preferably a strip-shaped hole, and its length direction extends in the second direction for the movement of the limited portion; the limited portion is constructed as a limiting column 113a, which is a cylindrical structure. The limiting column 113a can be arranged on the developing bearing 102 and located on the B1 direction side of the developing bearing 102. The limiting column 113a is protruding along the A1 direction on the developing bearing 102, and the limiting column 113a can be inserted into the limiting hole 212a, and can move along the inner wall of the limiting hole 212a in the second direction, and abut against the end of the limiting hole 212a in the second direction. In other embodiments, the structures of the limiting portion and the restricted portion can be interchangeable to achieve the same effect, and can be designed according to different actual conditions.

[0177] In this embodiment, the developing bearing 102 is also provided with a force-bearing portion 112 for receiving the thrust of the electronic imaging device. The electronic imaging device has a force-applying member (not shown) for outputting the thrust. The force-applying member is a rocker structure. The force-bearing portion 112 abuts against the force-applying member to cause the developing frame 110 to swing.

[0178] When in use, the force receiving portion 112 contacts the force applying member to receive the contact force, so that the developing unit 110 moves along the separation contact direction D2 ( Fig.35 The limiting column 113a also moves along the limiting hole 212a toward the B1 direction. At this time, the developing roller 120 and the photosensitive drum 220 are in close contact with each other to perform the developing operation. Since the swing center of the developing unit 100 is closer to the C2 direction side of the processing box, when the force-bearing portion 112 is out of contact with the force-applying member (i.e., it does not receive the contact force of the force-applying member of the electronic imaging device), the developing unit 100 is subjected to gravity and moves around the swing center ( Fig.35 The center of the middle connecting portion 300) along the separation direction D1 ( Fig.35 The limiting column 113a swings a small distance in the limiting hole 212a (in the clockwise direction), so that the limiting column 113a moves along the limiting hole 212a in the B2 direction, and finally the limiting column 113a abuts against the B2 direction end (the end away from the photosensitive drum 220) of the limiting hole 212a, so that the developing unit 100 is limited and cannot swing continuously, and at this time the developing roller 120 and the photosensitive drum 220 are still in contact, but not in a tight abutment state. Therefore, the abutment pressure between the developing roller 120 and the photosensitive drum 220 is reduced by the small distance moved by the limiting column 113a in the limiting hole 212a, but the swinging range of the developing unit 100 under the action of its own gravity is also limited, thereby avoiding collision and wear caused by excessive separation and swinging distance of the developing frame 110.

[0179] When the processing box is developing, the force-bearing part 112 abuts against the force-applying member, so that the developing roller 120 is in close contact with the photosensitive drum 220, and the developing work can be better realized. In the non-working state (after the development is completed), the force-bearing part 112 of the developing frame 110 does not receive the contact force. Under the restriction of the control structure, the developing frame 110 can swing slightly due to its own gravity, so that the developing roller 120 contacts but does not close to the photosensitive drum 220, so as to reduce the wear between the two. By limiting the position of the developing frame 110 in the non-working state through the control structure, the wear problem caused by the collision between the developing frame 110 and the photosensitive frame 210 due to the large drop of the self-gravity is avoided, and the service life of the processing box is extended.

[0180] The other structures of the processing box of this embodiment are the same as those of the first embodiment and will not be described again.

[0181] Embodiment 6

[0182] like Fig.37 As shown, the structure of this embodiment is mostly the same as that of the fifth embodiment, except that the specific structure of the control structure is different. This embodiment does not adopt a jack-limiting structure, but a rib-abutting limiting structure.

[0183] Specifically, Fig.37 and Fig.38 As shown, the control structure includes a limiting portion and a limited portion, the limiting portion is constructed as a first rib 212b protruding along the A2 direction on the photosensitive frame 210, and the limited portion is constructed as a second rib 113b protruding along the A1 direction on the developing bearing 102, the first rib 212b and the second rib 113b can abut against each other, in the second direction, the projections of the first rib 212b and the second rib 113b overlap, and the first rib 212b is located on the B2 direction side of the second rib 113b, so that when the developing unit 100 swings along the separation direction D1, the developing unit 100 is limited by the abutment between the first rib 212b and the second rib 113b, so as to limit the movement of the developing unit 100 along the separation direction D1 under the action of its own gravity. In this embodiment, the width of the first rib 212b in the third direction is smaller than the width of the second rib 113b in the third direction. When the developing unit 100 swings, the second rib 113b has a tendency to move toward the third direction. This arrangement can prevent the first rib 212b and the second rib 113b from being offset when they abut against each other, thereby failing to limit the developing frame 110. In this embodiment, the shapes of the first rib 212b and the second rib 113b are not limited, as long as they can abut against each other.

[0184] In the working state of the processing box (when performing the developing work), the force-bearing part 112 abuts against the force-applying member to receive the contact force, so that the developing unit 100 swings along the contact direction D2, and the developing roller 120 abuts tightly against the photosensitive drum 220 to perform the developing work. At this time, there is a gap between the first rib 212b and the second rib 113b in the second direction, and in the non-working state, the force-bearing part 112 is disengaged from the abutment with the force-applying member, and the developing unit 100 moves along the separation direction D1 due to gravity, specifically, moves a small distance along the B2 direction and the C2 direction, and the first rib 212b abuts against the second rib 113b, so that the developing unit 100 is limited. At this time, the developing roller 120 and the photosensitive drum 220 are still in contact, but not in a tight abutment state. Compared with the developing work, the abutment pressure between the developing roller 120 and the photosensitive drum 220 is reduced.

[0185] The other structures of the processing box of this embodiment are the same as those of the first embodiment and will not be described again.

[0186] Embodiment 7

[0187] like Fig.39 As shown, most structures of this embodiment are the same as those of embodiment five, except that the position and structure of the control structure are different. In this embodiment, the control structure is located closer to the swing center of the processing box (the center of the connecting portion 300), and the control structure is located on the B2 direction side and the C2 direction side of the swing center. Similarly, the swing amplitude of the developing unit 100 along the separation direction D1 is limited by abutment, so that the developing roller 120 maintains contact with the photosensitive drum 220.

[0188] Specifically, Fig.39 and Fig.40 As shown, the control structure includes a limiting portion and a restricted portion. The limiting portion and the restricted portion can abut against each other to limit the swing of the developing frame 110. The limiting portion or the restricted portion protrudes along the third direction. In this embodiment, the limiting portion is constructed as a contact surface 212c. The contact surface 212c is a plane on the photosensitive frame 210. The contact surface 212c intersects or is perpendicular to the third direction. The restricted portion is constructed as a limiting protrusion 113c. The limiting protrusion 113c is a structure protruding along the C2 direction on the end surface of the developing bearing 102. One end of the limiting protrusion 113c abutting against the contact surface 212c can be set to a plane or an arc shape. The limiting protrusion 113c is located on the upper side of the contact surface 212c. The limiting protrusion 113c abuts against the contact surface 212c to limit the developing unit 100 from moving along the separation direction D1 ( Fig.39 The swing amplitude of the developing roller 120 (in the clockwise direction) is controlled so as to keep the developing roller 120 in contact with the photosensitive drum 220. In other embodiments, the limiting portion may protrude along the C1 direction, that is, the restricted portion is constructed as a planar structure, and the limiting portion abuts against the restricted portion, which can also achieve the above effect.

[0189] In the working state of the processing box, the force-bearing portion 112 abuts against the force-applying member so that the developing frame 110 receives the contact force, and the developing unit 100 swings around the swing center (the center of the connecting portion 300) along the contact direction D2, specifically, the developing unit moves a small distance along the C1 direction and the B1 direction, and the limiting protrusion 113c also moves a small distance along the C1 direction, so that the developing roller 120 and the photosensitive drum 220 are closely abutted to perform the developing work; while in the non-working state, when the force-bearing portion 112 is out of contact with the force-applying member, the developing unit 100 swings around the swing center along the separation direction D1 due to gravity, that is, the developing unit 100 has a small movement component along the C2 direction and the B2 direction, and finally the limiting protrusion 113c abuts against the abutting surface 212c (the developing unit 100 can no longer move), at which time the developing roller 120 and the photosensitive drum 220 are still in contact, but not in a close abutting state, and the abutting pressure between the developing roller 120 and the photosensitive drum 220 is reduced compared with the developing work.

[0190] The other structures of the processing box of this embodiment are the same as those of the first embodiment and will not be described again.

[0191] Embodiment 8

[0192] The structures of this embodiment are mostly the same as those of the seventh embodiment, except that, on the basis of the seventh embodiment, this embodiment adds a limiting point of the control structure, so that the developing roller 120 and the photosensitive drum 220 are always in a state of close contact.

[0193] Specifically, Fig.41As shown, the control structure of this embodiment has three limiting points, with the limiting protrusion 113c abutting against the abutting surface 212c as the first limiting point F1, the position of the first limiting point F1 is closer to the C2 direction side of the processing box, and the positions of the other two limiting points are closer to the C1 direction side of the processing box, and are farther away from the swing center than the first limiting point F1. The B1 direction side of the developing end cover 101 has an arc portion 1014. The B2 direction side of the photosensitive end cover 201 is provided with a limiting opening 2011, the limiting opening 2011 is an open structure, and the opening faces the arc portion 1014 (that is, faces the B2 direction). The limiting buckle 2011 has two connected inner walls, and the angle between the two inner walls is an obtuse angle. The arc outer surface of the arc portion 1014 can abut / be tangent to the two inner walls of the limiting opening 2011, thereby forming a second limiting point F2 and a third limiting point F3 to limit the movement of the developing end cover 101 in the C1 direction and the B2 direction. It can be known that the abutment between the limiting protrusion 113c and the abutment surface 212c can limit the movement of the developing frame 110 along the C2 direction, and the abutment between the arc portion 1014 and the limiting opening 2011 can limit the movement of the developing frame 110 along the C1 direction and the B2 direction. The simultaneous action of the two makes it impossible for the developing unit 100 to move relative to the drum unit 200 (the effect of the self-gravity of the developing unit 100 is completely offset), and the developing roller 120 always maintains close contact with the photosensitive drum 220.

[0194] It should be noted that the working principle of this embodiment is different from that of the above-mentioned embodiments. When the force-bearing portion 112 abuts against the force-applying member to receive the thrust, the developing frame 110 cannot move slightly. Similarly, when the thrust is withdrawn, the developing frame 110 cannot move slightly due to its own gravity. That is, no matter whether the processing box is in the developing working state or the non-working state, under the action of the limiting protrusion 113c and the abutting surface 212c, the arc portion 1014 and the limiting opening 2011, the developing roller 120 and the photosensitive drum 220 always maintain the same degree of close abutment. Therefore, the drum roller is not separated, which can effectively solve the wear problem caused by the collision between the developing frame 110 and the photosensitive frame 210 due to the swing of its own gravity.

[0195] The other structures of the processing box of this embodiment are the same as those of the first embodiment and will not be described again.

[0196] Embodiment 9

[0197] This embodiment provides a processing box, which is different from the first embodiment in that the control structure is different.

[0198] like Figure 42 to Figure 46As shown, in this embodiment, the control structure of the processing box includes a pressing member 450, which is used to cooperate with the electronic imaging device to provide a force to move the developing unit 100 from the second position to the first position, thereby offsetting the self-weight of the developing unit 100, so that the developing unit 100 cannot move along the separation direction D1 after the processing box is installed in the electronic imaging device. The pressing member 450 is protrudingly arranged on the developing frame 110 along the B2 direction, and the pressing member 450 is arranged at the upper end of the processing box in the third direction, that is, close to the developing roller 120. The pressing member 450 includes a mounting portion 451, a buffer portion 452 and a pressing portion 453. Among them, the mounting portion 451 of the pressing member 450 is installed on the developing frame 110. Specifically, in this embodiment, the pressing member 450 has a length direction, and the pressing member 450 is installed on the developing frame 110 in a direction consistent with the length direction of the processing box (that is, the first direction). The mounting portion 451 is a strip-shaped structure, which can be mounted on the B2 direction side of the developing frame 110 by pasting, welding, or snapping. The pressing portion 453 is an arc-shaped structure, one end or both ends of the pressing portion 453 are connected to the mounting portion 451, and the buffer portion 452 is arranged between the mounting portion 451 and the pressing portion 453 (specifically, it can be abutted at the middle position of the two in the length direction), so that a buffer area is generated between the mounting portion 451 and the pressing portion 453 to adjust the abutting pressure between the developing roller 120 and the photosensitive drum 220, thereby improving the developing quality. Specifically, in this embodiment, the buffer portion 452 is composed of a spring, and the elastic expansion direction of the spring extends along the second direction. One end of the spring abuts the mounting portion 451, and the other end abuts the pressing portion 453. At the same time, the buffer portion 452 can also be composed of other elastic parts that can play the same effect, such as elastic rubber, elastic sponge, etc., and the elastic part can be set to one or more. The pressing portion 453 is used to abut against the cross beam structure 700 of the electronic imaging device, so as to be pressed by the cross beam structure 700. The pressing force of the cross beam structure 700 acts on the developing unit 100 through the pressing member, so that the developing unit 100 rotates and moves from the second position to the first position along the contact direction D2, and the developing roller 120 is closely abutted against the photosensitive drum 220. In this embodiment, the mounting portion of the pressing member 450 is integrally formed with the pressing portion 453. Alternatively, the pressing portion and the mounting portion may also be separately provided.

[0199] like Fig.45 As shown, when the pressing member 450 is pressed and stressed by the beam structure 700 of the electronic imaging device, the force of the pressing member 450 on the developing unit 100 causes the developing unit 100 to rotate along the contact direction D2 around the axis (rotation axis) of the connecting portion 300, that is, the force of the pressing member 450 on the developing unit 100 is in the counterclockwise direction, and the developing unit 100 rotates from the second position to the first position along the contact direction D2, so that after the processing box is placed in the electronic imaging device, the photosensitive drum 220 and the developing roller 120 always maintain a close contact state to ensure the printing quality.

[0200] Further, such as Fig.43 and Fig.45 As shown, the control structure also includes a control structure as in Example 7, including a limiting portion and a limited portion, the limiting portion is the abutting surface 212c on the photosensitive frame 210, and the limited portion is the limiting protrusion 113c on the developing frame 110, and the limiting portion cooperates with the limited portion to limit the position of the developing unit 100 in the separation direction D1, so that the movement of the developing unit 100 along the separation direction D1 is limited under the action of its own gravity, and the developing unit 100 cannot continue to move in the separation direction D1, thereby ensuring the stability of the processing box before the processing box is placed in the electronic imaging device, and not generating an excessive separation distance.

[0201] The processing box of this embodiment is provided with a pressing member 450 on the developing frame 110, so that when the processing box is placed in the electronic imaging device, the photosensitive drum 220 and the developing roller 120 always keep in contact, which solves the problem of relying on the gravity of the developing frame 110 itself to separate in the prior art. The processing box developing frame 110 includes a powder bin structure, and the powder bin usually contains a large amount of carbon powder. Therefore, the developing frame part has a large mass, which causes a rigid collision between the structures when separating by their own weight, which will cause wear and even damage to the processing box parts in the long run.

[0202] The other structures of the processing box of this embodiment are the same as those of the first embodiment and will not be described again.

[0203] Embodiment 10

[0204] like Figure 47 to Figure 49 As shown, in this embodiment, the control structure includes a rotatable part 116, which drives the developing roller 120 away from or close to the photosensitive drum 220. The rotatable part 116 is connected to the powder bin 115. The length direction of the powder bin 115 and the rotatable part 116 extends along the first direction. In the third direction, the rotatable part 116 is located on the upper side of the powder bin 115 (the C1 direction side). The powder bin 115 stores developer (carbon powder). The powder bin 115 is provided with a stirring frame 140. The carbon powder in the powder bin 115 is stirred by the stirring frame 140 to prevent the carbon powder from agglomerating. At the same time, the carbon powder can also be transported toward the rotatable part 116. A developing roller 120 and a powder feeding roller 130 are arranged in the rotatable part 116, and the powder bin 115 is connected to the inside of the rotatable part 116. The powder bin 115 and the rotatable part 116 are connected by a flexible member 117. The flexible member 117 can be deformed. The flexible member 117 can be specifically a flexible soft glue. The powder bin 115 and the rotatable part 116 are connected by the flexible soft glue so that the rotatable part 116 can move relative to the powder bin 115, thereby driving the developing roller 120 to move together to achieve contact or separation between the developing roller 120 and the photosensitive drum 220; the flexible soft glue covers the connection port between the powder bin 115 and the rotatable part 116 along the circumferential direction, thereby forming a sealing structure to prevent leakage of the developer.

[0205] Further, such as Figures 49 to 52 As shown, the powder bin 115 and the rotatable part 116 are both supported by the developing bearing 102. Both ends of the powder bin 115 are fixedly supported on the developing bearing 102, that is, the powder bin 115 and the developing bearing 102 are in a stationary state. Both ends of the rotatable part 116 are movably supported on the developing bearing 102. Specifically, the developing bearing 102 is provided with a supporting hole 1021 for supporting the developing roller 120. The shaft of the developing roller 120 extends out of the end wall of the rotatable part 116 and is inserted into the supporting hole 1021 and supported by the supporting hole 1021. The supporting hole 1021 is preferably an arc-shaped hole. The developing roller 120 can move relative to the developing bearing 102 within the range of the supporting hole 1021. Fig.53 As shown, both ends of the rotatable portion 116 are further provided with clamping grooves 1161 , and the clamping grooves 1161 are clamped on both ends of the shaft of the developing roller 120 , so that the rotatable portion 116 can drive the developing roller 120 to move.

[0206] like Fig.49 As shown, the powder delivery roller 130 is arranged in the rotatable part 116, and its surface contacts the surface of the developing roller 120, so that the carbon powder is delivered to the developing roller 120 and is adsorbed by the charged developing roller 120. The shaft of the powder delivery roller 130 also extends out of the end wall of the rotatable part 116 and is inserted into the shaft hole 1022 (circular hole) of the developing bearing 102 and is supported by the developing bearing 102. The axis of the powder delivery roller 130 is the rotation center of the rotatable part 116, that is, when the rotatable part 116 moves relative to the powder bin 115 / developing bearing 102, the position of the powder delivery roller 130 is unchanged, and the rotatable part 116 can move around the rotation center (the axis of the powder delivery roller 130) between the first position where the developing roller 120 contacts the photosensitive drum 220 and the second position where the developing roller 120 separates from the photosensitive drum 220.

[0207] Further, such as Fig.47 , Fig.50 and Fig.51 As shown, the rotatable part 116 is also provided with a force-bearing part 112, and the force-bearing part 112 is used to receive the contact force applied by the force-applying member of the electronic imaging device, so that the rotatable part 116 moves from the second position to the first position. The force-bearing part 112 can be a protruding structure arranged on the rotatable part 116, and the force-bearing part 112 is arranged near the upper end (one end in the C1 direction) of the rotatable part 116 in the third direction. The force-bearing part 112 is arranged on the side of the rotatable part 116 in the B2 direction in the second direction. The force-bearing part 112 can be arranged at one end or both ends of the rotatable part 116 in the first direction.

[0208] Furthermore, Figures 49 to 51As shown, the processing box also includes a separation member, which is a first-class elastic member 410. The first-class elastic member 410 is arranged between the developing bearing 102 and the rotatable part 116. The first-class elastic member 410 is constructed to provide a separation force that moves the rotatable part 116 from the first position to the second position. Preferably, one end of the first-class elastic member 410 abuts on the developing bearing 102, and the other end abuts on the side of the force-bearing part 112 facing the B1 direction. The elastic expansion direction of the first-class elastic member 410 is along the second direction, and the direction of the separation force applied to the rotatable part 116 is along the B2 direction. When the processing box is not subjected to other external forces (for example, the state before being installed in the electronic imaging device, the electronic imaging device is not in operation), the rotatable part 116 is in the second position under the action of the first-class elastic member 410, and the developing roller 120 is not in contact with the photosensitive drum 220. When the force-bearing part 112 on the rotatable part 116 receives the contact force (along the contact direction D2) and moves, the first-class elastic member 410 is compressed. The first type of elastic member 410 can be arranged at one end or both ends of the rotatable part 116 in the first direction, and the two ends of the first type of elastic member 410 can also abut against the photosensitive frame 210 or other positions on the rotatable part 116, as long as it can be ensured that the first type of elastic member 410 can apply a separation force to the rotatable part 116.

[0209] When the processing box is installed in the electronic imaging device but no developing work is performed, the drum unit 200 is against the components in the electronic imaging device and is in a stationary state, the developing bearing 102 and the powder bin 115 are also in a relatively stationary state, the rotatable part 116 is in the second position under the action of the separation force of the first type of elastic member 410, and the developing roller 120 and the photosensitive drum 220 are in a separated state.

[0210] When developing is required, the force-applying member of the electronic imaging device moves and contacts the force-bearing part 112, and applies a contact force along the contact direction D2 to the force-bearing part 112. The contact force acts on the entire rotatable part 116, and overcomes the separation force of the first type of elastic member 410 under the action of the contact force, so that the first type of elastic member 410 is compressed and deformed, and the rotatable part 116 rotates from the second position to the first position in the counterclockwise direction (contact direction D2) around the rotation center, and the developing roller 120 contacts the photosensitive drum 220, and the contact force is greater than the separation force of the first type of elastic member 410. The developing roller 120 and the photosensitive drum 220 remain in contact, and the developing work can be performed. During the movement of the rotatable part 116, the powder bin 115 always remains stationary, and when the rotatable part 116 rotates, the flexible member 117 will deform.

[0211] When the developing work is completed, the contact force of the force-applying member of the electronic imaging device is removed, the elastic deformation of the first type of elastic member 410 is restored, and the generated separation force pushes the rotatable part 116 to rotate from the first position to the second position in a clockwise direction (separation direction D1) around the rotation center. The developing roller 120 is separated from the photosensitive drum 220 and is maintained in a drum-roller separation state under the action of the separation force, waiting for the next developing work to start or be removed from the electronic imaging device.

[0212] The solution of this embodiment divides the developing frame 110 into two parts: a rotatable part 116 and a powder bin 115. The two parts are connected by a flexible member 117. The powder bin 115 is fixed, and the rotatable part 116 can move relative to the powder bin 115 under the expansion and contraction of the flexible member 117 to achieve contact and separation of the drum roller. The flexible member 117 is used to avoid wear caused by rigid contact; and the force required to replace the overall movement of the developing frame 110 with the movement of the rotatable part 116 is relatively small, thereby improving the flexibility of contact and separation of the drum roller.

[0213] like Fig.47 , Fig.49 and Fig.52 As shown, the developing coupling 320 is used to mesh with the developing drive head of the electronic imaging device and receive the driving force to drive the powder feeding roller 130 to rotate. During the movement of the rotatable part 116 between the second position and the first position, the powder feeding roller 130, as the rotation center, will not change its position. The developing coupling 320 coaxially arranged with the powder feeding roller 130 will not change its position during the contact / separation process, that is, the developing coupling 320 will only rotate but will not move during the operation. The first idler gear 370 is meshed with the powder feeding roller gear 350, the developing roller gear 340 and the second idler gear 380 respectively. The second idler gear 380 is also meshed with the stirring frame gear 360. The developing coupling 320 receives the driving force to drive the powder feeding roller 130 and the powder feeding roller gear 350 to rotate synchronously. The powder feeding roller gear 350 transmits the driving force through the meshing relationship of the gears, thereby rotating the developing roller 120 and the stirring frame 140, and the developing unit 100 can work. When the developing operation is completed, the rotatable portion 116 drives the developing roller 120 to rotate from the first position to the second position. When the developing roller 120 is separated from the photosensitive drum 220 , the developing roller gear 340 is disengaged from the first idler gear 370 .

[0214] The other structures of the processing box of this embodiment are the same as those of the first embodiment and will not be described again.

[0215] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A process cartridge, detachably mounted in an electronic imaging device, comprising: A drum unit, comprising a photosensitive frame, on which a photosensitive drum is rotatably supported, and the photosensitive drum extends along a first direction; A developing unit, comprising a developing frame, on which a developing roller is rotatably supported, and the developing roller extends along a first direction; The developing unit is pivotally connected to the drum unit, and the developing unit can move around a rotation axis relative to the drum unit between a first position and a second position, when in the first position, the developing roller is in contact with the photosensitive drum, and when in the second position, the developing roller is separated from the photosensitive drum; the direction of movement from the first position to the second position is the separation direction, and the direction of movement from the second position to the first position is the contact direction; It is characterized by further comprising: The control structure is used to limit the movement of the developing unit along the separation direction under the action of its own gravity.

2. The process cartridge according to claim 1, wherein: A separating member is also included, and the separating member is used to provide or receive a separating force to move the developing unit from the first position to the second position along a separating direction.

3. The process cartridge according to claim 2, wherein: The separating member is a first type elastic member, and the first type elastic member is arranged between the photosensitive frame and the developing frame.

4. The process cartridge according to claim 2 or 3, wherein: The control structure is a second type of elastic member, which is arranged between the photosensitive frame and the developing frame. The force of the second type of elastic member is greater than or equal to the self-weight of the developing unit, thereby offsetting the self-weight that causes the developing unit to move in the separation direction.

5. The process cartridge according to claim 4, wherein: The force of the separation member is greater than the combined force of the force of the second-type elastic member and the self-weight of the developing unit.

6. The process cartridge according to claim 3, wherein: The first type of elastic member includes at least one compression spring, one end of the compression spring abuts against the photosensitive frame, and the other end of the compression spring abuts against the developing frame.

7. The process cartridge according to claim 4, wherein: The second type of elastic member includes at least one torsion spring or tension spring.

8. The process cartridge according to claim 2, wherein: The developing unit and the drum unit are swingably connected via the control structure, and the center of the control structure is a rotation axis of the developing unit.

9. The process cartridge according to claim 8, wherein: The control structure is provided at a position close to an end portion of the developing frame in the separation direction.

10. The process cartridge according to claim 9, wherein: The developing roller and the photosensitive drum are arranged opposite to each other in a second direction intersecting with the first direction, and the direction from the developing roller to the photosensitive drum is the positive direction of the second direction; The control structure is located on the negative side of the developing roller in the second direction.

11. The process cartridge according to claim 10, wherein: A straight line passing through the center of the control structure and parallel to the second direction is defined as a first straight line, wherein the first straight line divides the processing box into a first area and a second area, wherein the developing roller and the photosensitive drum are located within the first area, and an area of ​​the first area is larger than an area of ​​the second area.

12. The process cartridge according to claim 10, wherein: A straight line passing through the center of the control structure and parallel to a third direction intersecting the first direction and the second direction is defined as a second straight line, and the second straight line divides the processing box into a third area and a fourth area, the developing roller and the photosensitive drum are located in the third area, and the area of ​​the third area is larger than that of the fourth area.

13. The process cartridge according to claim 12, wherein: The developing roller is located at one end of the developing frame in the third direction, and the control structure is located at the other end of the developing frame in the third direction.

14. The process cartridge according to any one of claims 8 to 13, characterized in that: The control structure includes a connecting member and a pivoting portion, wherein the pivoting portion includes a first pivoting hole arranged on the photosensitive frame and a second pivoting hole arranged on the developing frame, and the connecting member passes through the first pivoting hole and the second pivoting hole in sequence to pivotally connect the two.

15. The process cartridge according to claim 2, wherein: The separating member is movably disposed at one end or both ends of the process box in the first direction, and the separating member can receive a separating force to drive the developing unit to move along the separating direction.

16. The process cartridge according to claim 15, wherein: The separation member does not protrude from an end portion of the process cartridge in a third direction, and the third direction intersects the first direction.

17. The process cartridge according to claim 16, wherein: The separating member is rotatably arranged on the processing box, and the separating member can rotate between an initial position and a working position, and the separating member includes a hooking portion that receives a separating force; when the hooking portion is in the working position, it is farther away from the developing frame in a second direction than when it is in the initial position, and the second direction intersects with the first direction and the third direction.

18. The process cartridge according to claim 17, wherein: The separating member is provided with a front end portion. During the process of installing the processing box to the electronic imaging device, the front end portion contacts the electronic imaging device and then rotates, so that the separating member rotates from the initial position to the working position.

19. The process cartridge according to any one of claims 15 to 18, characterized in that: It also includes a developing coupling for receiving the driving force of the electronic imaging device, and an abutment member connected to the developing coupling, wherein the abutment member can move along a first direction and drive the developing coupling to extend and retract in the first direction.

20. The process cartridge according to claim 15, wherein: The separation member includes an abutment portion extending along a first direction, the abutment portion abuts against the separation control member of the electronic imaging device and receives a separation force, driving the developing unit to swing along a separation direction, so that the photosensitive drum and the developing roller are separated.

21. The process cartridge according to claim 20, wherein: The separating member is swingably arranged on the developing frame around a second direction intersecting the first direction, and a contact slope is provided on the contact portion. The separating control member abuts against the contact slope to make the separating member swing around the second direction. After the separating control member is disengaged from the contact slope, the separating member is reset.

22. The process cartridge according to claim 15, wherein: It also includes a developing coupling that receives the driving force of the electronic imaging device, and a driving gear that can engage with the developing coupling; the developing coupling is rotatably supported on the photosensitive frame, and the driving gear is rotatably supported on the developing frame. When the developing unit is in a first position, the driving gear engages with the developing coupling, and when the separating member receives the separating force to drive the developing unit to move to a second position, the driving gear disengages from the developing coupling.

23. The process cartridge according to claim 1, wherein: The control structure includes a limiting portion and a restricted portion; The limiting portion is arranged on the photosensitive frame, the restricted portion is arranged on the developing frame, the restricted portion abuts against the limiting portion so that the movement of the developing unit along the separation direction is restricted under the action of gravity, and the developing roller always keeps in contact with the photosensitive drum.

24. A process cartridge according to claim 23, characterized in that One of the limiting portion and the restricted portion is a limiting hole, and the other is a limiting column, and the limiting column can move in the limiting hole; when the developing unit moves along the separation direction due to its own gravity, the limiting column abuts against one end of the limiting hole away from the photosensitive drum, reducing the abutting pressure between the developing roller and the photosensitive drum.

25. A process cartridge according to claim 23, characterized in that The limiting portion is a first rib, and the restricted portion is a second rib, and the second rib can move relative to the first rib; when the developing unit moves along the separation direction due to its own gravity, the first rib abuts against the second rib, reducing the abutment pressure between the developing roller and the photosensitive drum.

26. A process cartridge according to claim 25, characterized in that The first rib and the second rib extend along a first direction, and projections of the first rib and the second rib in a second direction intersecting the first direction at least partially overlap.

27. A process cartridge according to claim 26, characterized in that The height of the second rib in the third direction is greater than that of the first rib, so as to avoid misalignment of the first rib and the second rib when they abut against each other. The third direction intersects with the first direction and the second direction.

28. A process cartridge according to claim 23, characterized in that One of the limiting portion and the restricted portion is a limiting protrusion, and the other is a contact surface, wherein the limiting protrusion can move relative to the contact surface; when the developing unit moves along the separation direction due to its own gravity, the limiting protrusion contacts the contact surface, thereby reducing the contact pressure between the developing roller and the photosensitive drum.

29. A process cartridge according to any one of claims 23 to 28, characterized in that: The developing unit also includes a force-bearing portion for receiving the contact force of the electronic imaging device. When the force-bearing portion receives the contact force, there is a gap between the restricted portion and the limiting portion, and the developing roller is in close contact with the photosensitive drum. When the contact force is cancelled, the developing unit moves in a separation direction relative to the drum unit due to its own gravity, the restricted portion abuts against the limiting portion to limit the swing amplitude of the developing unit, so that the developing roller maintains non-close contact with the photosensitive drum.

30. The process cartridge according to claim 28, wherein: The developing frame is provided with an arc portion, the photosensitive frame is provided with a limiting opening, and the arc outer surface of the arc portion abuts against the inner wall of the limiting opening.

31. A process cartridge according to claim 30, characterized in that Under the joint action of the limiting protrusion and the abutting surface, the arc portion and the limiting opening, the developing unit cannot swing relative to the drum unit, and the developing roller and the photosensitive drum always maintain close contact.

32. A process cartridge according to claim 1, characterized in that The control structure includes a pressing member, which is protruding from the developing frame. When the processing box is installed in the electronic imaging device, the pressing member can cooperate with the electronic imaging device to make the developing unit move along the contact direction and remain in the first position.

33. A process cartridge according to claim 32, characterized in that The pressing member includes a pressing portion and a buffer portion, wherein the pressing portion is in contact with the electronic imaging device, and the buffer portion is disposed between the pressing portion and the developing frame to generate a buffer area therebetween.

34. A process cartridge according to claim 33, characterized in that The pressing member further includes a mounting portion, through which the pressing member is mounted on the developing frame, and the buffer portion is disposed between the mounting portion and the pressing portion.

35. A process cartridge according to claim 34, characterized in that The buffer portion is an elastic member.

36. A process cartridge according to claim 1, characterized in that The control structure includes a rotatable part, which is connected to the powder bin of the developing frame. The developing roller is arranged in the rotatable part. The rotatable part can move relative to the powder bin and drive the developing roller to move together to achieve contact or separation between the developing roller and the photosensitive drum.

37. A process cartridge according to claim 36, characterized in that During the movement of the rotatable part, the powder bin is stationary relative to the photosensitive frame.

38. A process cartridge according to claim 36, characterized in that The rotatable part is connected to the powder bin via a flexible member.

39. A process cartridge according to claim 36, characterized in that The developing unit further includes a powder feeding roller disposed in the rotatable part, the axis of the powder feeding roller being the rotation center of the rotatable part, and the rotatable part can move between a first position and a second position around the rotation center.

40. A process cartridge according to claim 39, characterized in that A separating member is also included. The separating member is disposed between the photosensitive frame and the rotatable portion, and the separating member is configured to provide a separating force for moving the rotatable portion from the first position to the second position.

41. A process cartridge according to any one of claims 36 to 40, characterized in that The developing unit has developing bearings at both ends in the first direction, and the rotatable portion is movably disposed on the developing bearings.

42. A process cartridge according to claim 41, characterized in that The developing bearing is provided with a supporting hole for supporting the developing roller, and the rotatable part can drive the developing roller to move relative to the developing bearing within the range of the supporting hole.

43. A process cartridge according to claim 42, characterized in that The supporting hole is an arc-shaped hole.

44. A process cartridge according to claim 38, characterized in that The flexible member is capable of being deformed.

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