Processing box

Abstract

The utility model discloses a processing box which is detachably arranged in a tray component of electronic imaging equipment, the electronic imaging equipment comprises a separation control mechanism, and the processing box comprises a drum unit, a light-sensitive drum, a light-sensitive element and a light-sensitive element, a developing unit rotatably supporting a developing roller; the force receiving part is fixedly arranged on the developing unit and used for receiving the acting force of the separation control mechanism to drive the developing unit to move relative to the drum unit; the lifting mechanism is arranged on the processing box and can abut against the tray component, so that the processing box is located at the position where the force receiving piece cannot receive the acting force of the separation control mechanism. The force receiving piece is arranged at one end of the processing box in the length direction, the force receiving piece is fixed and immovable, the lifting mechanism is arranged to be matched with the tray component so that at least part of the processing box can be lifted, the fixed force receiving piece can avoid the separation control mechanism during installation, and interference between the fixed force receiving piece and the separation control mechanism is prevented; meanwhile, linkage among all parts is little, the structure is simple, and cost is reduced.

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 an electronic photographic copier, an electronic photographic printer, a fax machine, a word processor, 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 photosensitive 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 imaging device. The portion of the process cartridge that includes the photosensitive member is a drum unit, and the portion that includes the developing member is a developing unit.

[0003] In the prior art, this type of processing box adopts a double-sided force separation structure, the driving side force receiving member is a movable long rod, and the structure and working principle of the non-driving side force receiving member are the same as those of the driving side. After the processing box is installed into the machine and the front door of the machine is closed, the pressing part of the machine driving side presses the upper surface of the driving side end cover to keep the processing box in a stable state. At the same time, the pressing part of the driving side will also press the upper part of the long rod. After the long rod is subjected to force, it moves in the vertical direction and protrudes from the lower surface of the processing box, cooperating with the machine separation control mechanism. The non-driving side is the same as the driving side.

[0004] In the prior art, when the photosensitive drum is separated from the developing roller (also called drum roller separation), the separation force applying surface on the separation control mechanism on the machine driving side instantly acts on the separation force receiving surface of the long rod to apply the separation force, then returns to its initial position, no longer applies force, and the drum roller separation state is maintained by the retaining member on the processing box; when the photosensitive drum is in contact with the developing roller (also called drum roller contact), the contact force applying surface on the separation control mechanism on the machine driving side instantly acts on the contact force receiving surface of the long rod to apply the contact force, then returns to its initial position, no longer applies force, and the contact force causes the retaining member on the processing box to reset and the drum roller contacts. The non-driving side is the same as the driving side.

[0005] The above-mentioned processing box adopts a double-sided force separation structure, and the double-sided force receiving parts need to be telescopic, and the double-sided retaining components need to be linked with the force receiving parts and cooperate with the double-sided end covers to realize the function. The structure is complex, and there are many parts that cooperate with each other. The requirements for the accuracy of each part, the strength of the material, and the matching tolerance are very high, and the manufacturing difficulty is great. Utility Model Content

[0006] According to one aspect of the utility model, there is provided a processing box which can be detachably mounted in a tray component of an electronic imaging device, wherein the electronic imaging device includes a separation control mechanism, wherein the processing box includes:

[0007] A drum unit rotatably supports a photosensitive drum;

[0008] A developing unit rotatably supports a developing roller;

[0009] A force receiving member, fixedly disposed on the developing unit, for receiving the force of the separation control mechanism to drive the developing unit to move relative to the drum unit;

[0010] The lifting mechanism is arranged on the processing box and can abut against the tray component to place the processing box in a position where the force receiving member cannot receive the force of the separation control mechanism.

[0011] In some embodiments, the force receiving member is disposed at only one end of the process cartridge in the length direction.

[0012] In some embodiments, the lifting mechanism and the force receiving member are located at the same end of the process cartridge.

[0013] In some embodiments, the force receiving member at least partially protrudes all the way from the lower surface of the process cartridge.

[0014] In some embodiments, when the lifting mechanism abuts against the tray component, the force receiving member and the separation control mechanism have no overlapping portion in the height direction.

[0015] In some embodiments, the lifting mechanism is a first elastic member, and when the first elastic member abuts against the tray component, the force of the first elastic member causes the processing box to at least partially lift up.

[0016] In some embodiments, the process box includes an end cover, and the first elastic member is mounted on the end cover.

[0017] In some embodiments, the processing box is pressed by the pressing force of the pressing mechanism of the electronic imaging device to overcome the force of the first elastic member and move downward, driving the force receiving member to move to a position where it can receive the force of the separation control mechanism, and the force receiving member and the separation control mechanism have an overlapping portion in the height direction.

[0018] In some embodiments, the lifting mechanism includes a second elastic member and a sliding member, the sliding member is slidably disposed on the process cartridge, the sliding member has an inclined portion abutting against the tray member, the inclined portion has a first end and a second end, the first end is closer to the force receiving member than the second end;

[0019] The second elastic member is defined between the process cartridge and the slide member, and the second elastic member keeps the slide member at a position where the first end of the slope portion abuts against the tray member, so that the process cartridge is at least partially lifted.

[0020] In some embodiments, the processing box includes an end cover, one of the end cover and the slide is provided with a slide groove, and the other is provided with a guide column slidably matched with the slide groove; the slide groove extends along the width direction of the processing box.

[0021] In some embodiments, when the processing box is subjected to the pressing force of the pressing mechanism of the electronic imaging device, the pushing force of the abutment portion of the tray component on the inclined portion overcomes the force of the second elastic member, causing the sliding member to move, and the abutment portion slides from the first end to the second end along the inclined portion, and the processing box moves downward, driving the power receiving member to move to a position capable of receiving the force of the separation control mechanism.

[0022] In some embodiments, the developing unit includes a developing cover, and the force receiving member is disposed at a lower end of the developing cover.

[0023] In some embodiments, the developing unit is capable of receiving the force of the separation control mechanism through a force receiving member so as to move between a first position and a second position relative to the drum unit. In the first position, the developing roller is in contact with the photosensitive drum, and in the second position, the developing roller is separated from the photosensitive drum.

[0024] In some embodiments, a holding mechanism is further included, and the holding mechanism is arranged on the drum unit. A protrusion cooperating with the holding mechanism is provided on the developing unit, so that the developing unit is kept in the first position or the second position.

[0025] In some embodiments, the retaining mechanism includes a third elastic member and a contact member, and the third elastic member is configured to cause the contact member to abut against an upper side or a lower side of the protrusion, thereby retaining the developing unit in the second position or the first position.

[0026] In some embodiments, a fourth elastic member connected between the drum unit and the developing unit is further included, the fourth elastic member applies a force to the developing unit to move from the second position to the first position, and the force of the fourth elastic member is smaller than the force of the third elastic member.

[0027] In some embodiments, the fourth elastic member and the force receiving member are located at different ends of the process cartridge in a length direction.

[0028] The beneficial effects of the utility model are as follows: a force receiving member is arranged at one end of the processing box in the length direction of the utility model, and the force receiving member is arranged to be fixed and immovable, and a lifting mechanism is arranged to cooperate with the tray component to lift the processing box at least partially, so that the fixed force receiving member avoids the separation control mechanism during installation to prevent interference between the two; at the same time, there is less linkage between the parts, the structure is simple, and the cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of the processing box of the first embodiment of the utility model from an angle;

[0030] Figure 2 This is a schematic diagram of the overall structure of the processing box of the first embodiment of the utility model from another angle;

[0031] Figure 3 It is a cross-sectional view of the cooperation between the retaining mechanism and the protrusion of the processing box of the first embodiment of the utility model;

[0032] Figure 4 It is a structural schematic diagram of the developing protective cover of the processing box of the first embodiment of the utility model;

[0033] Figure 5 It is a schematic diagram of the process of installing the processing box of the first embodiment of the utility model into the electronic imaging device;

[0034] Figure 6 This is a schematic diagram of the overall structure of the processing box of the second embodiment of the utility model;

[0035] Figure 7 It is a partial exploded schematic diagram of a processing box according to a second embodiment of the present utility model;

[0036] Figure 8 (a) and (b) are schematic structural diagrams of a sliding member of a lifting mechanism according to a second embodiment of the present utility model;

[0037] Fig. 9 This is a schematic diagram of the installation of the processing box of the second embodiment of the utility model onto the tray component;

[0038] Fig.10 It is a schematic diagram of the cooperation of the processing box of the second embodiment of the utility model after the pressing mechanism is pressed down. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] The following descriptions of the directions are as follows:

[0045] 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;

[0046] 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;

[0047] 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.

[0048] The first direction, the second direction and the third direction intersect each other.

[0049] Embodiment 1

[0050] 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, a developing roller for developing an electrostatic latent image formed on the photosensitive drum, etc. The electronic imaging device includes a main component and a front door, and a drive head is provided in the main component, 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 main component of the electronic imaging device is also provided with a separation control mechanism 910, a pressing mechanism 920 and a tray component 930, wherein the pressing mechanism 920 is linked to the front door, and when the front door is opened, the pressing mechanism 920 rises, and when the front door is closed, the pressing mechanism 920 falls. The tray component 930 is used to carry the processing box and can be moved out of / into the main component of the electronic imaging device.

[0051] like Figures 1 to 3 As shown, this embodiment provides a process cartridge detachably mounted on an electronic imaging device, including a developing unit 100, a drum unit 200, a driving assembly, a holding mechanism, a force receiving member 400, and a lifting mechanism. The developing unit 100 includes a developing frame 110, a developing roller 130, a powder feeding roller, and a powder discharge knife, and the drum unit 200 includes a drum frame 210, an end cover, a photosensitive drum 220, and a charging roller. The processing box is roughly in the shape of a rectangular box, wherein the first direction (A1 and A2 directions) is also the length direction of the processing box, the second direction (B1 and B2 directions) is also the width direction of the processing box, and the third direction (C1 and C2 directions) is also the height direction of the processing box; one end of the processing box in the A1 direction is a driving end, and one end in the A2 direction is a conductive end, 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 toward the drum unit 200 is the B1 direction, one end of the processing box along the B1 direction is the front end, the direction from the drum unit 200 toward the developing unit 100 is the B2 direction, one end along the B2 direction is the rear end, one end of the processing box along the C1 direction is the upper end, and one end along the C2 direction is the lower end.

[0052] like Figure 1 and Figure 2As shown, the developing frame 110 forms a powder bin for storing toner, and the developing frame 110 is roughly in the shape of a long box. The length direction of the developing frame 110 extends along the first direction (directions A1 and A2). The developing frame 110 is provided with a driving side bearing 120 and a conductive side bearing at both ends of the length direction (directions A1 and A2), respectively. The powder feeding roller and the developing roller 130 are rotatably supported on the driving side bearing 120 and the conductive side bearing at both ends of the length direction of the developing frame 110. The powder feeding roller and the developing roller 130 can rotate under the action of the driving assembly, and the axial directions of the powder feeding roller and the developing roller 130 are along the length direction (first direction) of the developing frame 110. The surface of the powder feeding roller contacts the surface of the developing roller 130 to transport the toner to the developing roller 130 and is adsorbed by the charged developing roller 130.

[0053] like Figure 1 and Figure 2 As shown, the drum 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 drum frame 210 is provided with end caps at both ends in the first direction, which are respectively a driving side end cap 230 fixedly provided at one end of the drum frame 210 in the A1 direction and a conductive side end cap 240 fixedly provided at one end of the drum frame 210 in the A2 direction. The photosensitive drum 220 is rotatably supported on the driving side end cap 230 and the conductive side end cap 240. Specifically, the photosensitive drum 220 is provided on the lower end side (the C2 direction side) of the drum frame 210 in the height direction. The toner adsorbed by the developing roller 130 is transferred to the photosensitive drum 220 through the potential difference between the developing roller 130 and the photosensitive drum 220. The toner on the photosensitive drum 220 is then transferred through the transfer belt of the electronic imaging device to form an image on the recording material (such as paper). The charging roller is used to charge the surface of the photosensitive drum 220 with uniform electric charge, so that the photosensitive drum 220 can absorb toner.

[0054] like Figures 1 to 3As shown, the driving assembly includes a photosensitive coupling 310, a developing coupling 320, a developing roller gear and a powder feeding roller gear. The driving assembly can be arranged at one end or both ends of the process box in the first direction (length direction). In this embodiment, the driving assembly is arranged at the same end of the developing unit 100 in the length direction, preferably the driving end (the end in the A1 direction). The photosensitive coupling 310 is arranged at one end of the photosensitive drum 220 in the A1 direction, and is used to mesh 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, the developing roller gear, and the powder feeding roller gear are arranged on the outer side of the driving side bearing 120. Specifically, the driving side bearing 120 is provided with a supporting hole for supporting the developing coupling 320. The developing coupling 320 is used to mesh with the developing drive head of the electronic imaging device and receive the driving force. The developing roller gear is sleeved on the end of the shaft of the developing roller 130 extending from the driving side bearing 120, and the powder feeding roller gear is sleeved on the end of the shaft of the powder feeding roller extending from the driving side bearing 120. The developing roller gear and the powder feeding roller gear are directly or indirectly meshed with the developing coupling 320, so that the developing coupling 320 transmits the received driving force, thereby driving the developing roller 130 and the powder feeding roller to rotate. In the third direction, the developing coupling 320 is located on the upper side (the C1 direction side) of the photosensitive coupling 310.

[0055] like Figure 1 and Figure 2 As shown, a developer cover 140 is further provided on the outside of the driving side bearing 120. The developer cover 140 covers the developer roller gear, the powder feeding roller gear and a part of the developer coupling 320, and can protect the driving assembly. Specifically, a cylindrical portion is provided on the developer cover 140, and the cylindrical portion protrudes along a side away from the developer frame 110. The cylindrical portion is hollow inside, and its axial direction extends along the length direction of the developer frame 110. A part of the developer coupling 320 passes through the inside of the cylindrical portion and extends out of the developer cover 140.

[0056] like Figure 1 and Figure 2 As shown, the conductive side end cover 240 is disposed on the outer side of the conductive side bearing, and the driving side end cover 230 is disposed on the outer side of the developing protective cover 140. When viewed along the length direction of the process cartridge, the driving side end cover 230 and the developing protective cover 140 at least partially overlap. The driving side end cover 230 and the conductive side end cover 240 cover at least a portion of the end of the drum frame 210 and the developing frame 110, respectively. The driving side end cover 230 is fixedly connected to the end of the drum frame 210. The driving side end cover 230 is provided with a first through hole and a second through hole. When the driving side end cover 230 is installed at the end of the developing frame 110 and the drum frame 210, a portion of the photosensitive coupling 310 is exposed through the first through hole, and a portion of the developing coupling 320 is exposed through the second through hole, so that the coupling engages with the driving head of the electronic imaging device to receive the driving force.

[0057] like Figure 3 As shown, during the development process of the electronic imaging device, the developing roller 130 and the photosensitive drum 220 need to be in close contact. When the electronic imaging device is not performing the development work, the developing roller 130 and the photosensitive drum 220 need to be separated by a certain distance to avoid the developing roller 130 and the photosensitive drum 220 being in contact for a long time, which may cause the photosensitive drum 220 to be contaminated by excess developer (carbon powder) attached to the developing roller 130, or the developing roller 130 to be deformed or the photosensitive drum 220 to be worn.

[0058] 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 130 and the photosensitive drum 220 can be in contact when the electronic imaging device is working and separated when not working. When the process cartridge is installed in the electronic imaging device, the drum unit 200 is pressed by the pressing mechanism 920 in the electronic imaging device, and the drum unit 200 is immovable. The developing unit 100 is configured to be able to move between a first position and a second position relative to the drum unit 200. When the developing unit 100 is in the first position, the developing roller 130 is in contact with the photosensitive drum 220; when the developing unit 100 is in the second position, the developing roller 130 is separated from the photosensitive drum 220. In this embodiment, the movement mode of the developing unit 100 is to swing with the axis of the developing coupling 320 as the rotation center, that is, when the developing unit 100 is located in the first position, the lower end of the developing unit 100 is close to the lower end of the drum unit 200, so that the developing roller 130 can contact the photosensitive drum 220. At this time, the upper end of the developing unit 100 is located away from the drum unit 200; when the developing unit 100 moves from the first position to the second position, the lower end of the developing unit 100 swings in the direction away from the drum unit 200, driving the developing roller 130 to separate from the photosensitive drum 220. At this time, the upper end of the developing unit 100 swings in the direction close to the drum unit 200.

[0059] like Figure 3As shown, the processing box of this embodiment also includes a holding mechanism for keeping the developing unit 100 in the first position or the second position, that is, keeping the developing roller 130 in contact with or separated from the photosensitive drum 220. The holding mechanism is arranged on the driving side end cover 230, and the developing protective cover 140 is provided with a protrusion 141 that matches the holding mechanism, so that the developing unit 100 is kept in the first position or the second position. Specifically, the driving side end cover 230 is provided with a receiving portion, which is a through groove structure and extends roughly along the second direction. The opening of the receiving portion is arranged at one end of the B2 direction, and the holding mechanism is installed in the receiving portion. The holding mechanism includes a sleeve 510, a third elastic member 520 and abutment member 530. The sleeve 510 is fixedly installed in the accommodating portion of the drive side end cover 230. The sleeve 510 is hollow inside and has an opening at one end in the B2 direction (i.e., the opening toward the end of the developer cover 140). The third elastic member 520 and the abutment member 530 are installed in the sleeve 510. The abutment member 530 is located on the side of the sleeve 510 close to its opening (i.e., the side in the B2 direction). The third elastic member 520 is limited between the abutment member 530 and the sleeve. The abutment 530 is formed between the inner bottom wall (inner wall in the B1 direction) of the sleeve 510, and the force of the third elastic member 520 causes at least a portion of the abutment 530 to protrude outside the opening of the sleeve 510, and the abutment 530 abuts against the protrusion 141 on the developer protection cover 140. The protrusion 141 is arranged on the side of the developer protection cover 140 facing the B1 direction, and the protrusion 141 is approximately located in the middle of the developer protection cover 140 in the third direction, that is, the protrusion 141 is arranged close to the rotation center of the developer unit 100 in the third direction. The abutment 530 is preferably a spherical member, the surface of the spherical member abuts against the protrusion 141 and is pressed against the protrusion 141 under the force of the third elastic member 520, so that the developer unit 100 is maintained in the first position or the second position.

[0060] In some other embodiments, the sleeve 510 may not be provided, and the third elastic member 520 and the abutting member 530 may be directly installed in the accommodating portion.

[0061] like Figure 3 and Figure 4As shown, before the process cartridge is installed in the electronic imaging device, in order to avoid the developer roller 130 and the photosensitive drum 220 from being in contact for a long time, the developer unit 100 is set to be in the second position, and the developer roller 130 is separated from the photosensitive drum 220, that is, a force is applied to make the lower end of the developer unit 100 move in a direction away from the photosensitive drum 220 (direction B2). During the movement, the protrusion 141 pushes the abutment member 530 to overcome the force of the third elastic member 520 and retract in the direction B1, and the protrusion 141 The protrusion 141 moves downward over the abutment 530, that is, the position of the protrusion 141 in the third direction is lowered. After the protrusion 141 passes over the abutment 530, the abutment 530 extends again in the B2 direction under the action of the third elastic member 520, and abuts against the upper side of the protrusion 141 (the side in the C1 direction), so that the developing unit 100 is maintained in the second position after the external force is removed due to the cooperation of the retaining mechanism and the protrusion 141, and the developing roller 130 and the photosensitive drum 220 remain in a separated state.

[0062] like Figure 3 and Figure 4 As shown, when the electronic imaging device performs the developing operation, the developing roller 130 and the photosensitive drum 220 need to be in close contact, and the force of the electronic imaging device causes the developing unit 100 to move from the second position to the first position relative to the drum unit 200, that is, the lower end of the developing unit 100 moves toward the direction close to the photosensitive drum (moves along the B1 direction), and at the same time, the protrusion 141 moves upward to push the abutment 530 to retract in the B1 direction and pass over the abutment 530. After the protrusion 141 passes over the abutment 530, the abutment 530 extends out in the B2 direction again under the action of the third elastic member 520, and abuts against the lower side of the protrusion 141 (the C2 direction side), so that the developing unit 100 remains in the first position and the developing roller 130 and the photosensitive drum 220 remain in contact.

[0063] like Figure 2As shown, in this embodiment, the processing box also includes a fourth elastic member 600, and the fourth elastic member 600 is connected between the developing frame 110 and the drum frame 210. The fourth elastic member 600 is arranged near the conductive end (the end in the A2 direction) of the processing box (the fourth elastic member 600 cooperates with the position where the force receiving member 400 is arranged below, and the two are preferably arranged at opposite ends, that is, the fourth elastic member 600 and the force receiving member 400 are respectively located at different ends in the length direction of the processing box). In the third direction, the fourth elastic member 600 is arranged near the upper end (the end in the C1 direction) of the processing box. The fourth elastic member 600 applies a force to the developing unit 100 to move from the second position to the first position. The force of the fourth elastic member 600 is smaller than the force of the third elastic member 520. In the absence of other external forces, the force of the fourth elastic member 600 alone is insufficient to rotate the protrusion 141 on the developing cover 140 over the abutment 530, that is, the developing unit 100 cannot move from the drum roller separation state to the drum roller contact state (that is, from the second position to the first position) by the force of the fourth elastic member 600, so the drum roller separation state is maintained (that is, the developing unit 100 remains in the second position).

[0064] like Figure 1 and Figure 2 As shown, in this embodiment, the processing box also includes a force receiving member 400, which cooperates with the separation control mechanism 910 in the electronic imaging device to achieve separation of the developing roller 130 from the photosensitive drum 220 when no development work is performed. The force receiving member 400 is fixedly arranged on the developing unit 100, and is used for receiving the force of the separation control mechanism 910 to drive the developing unit 100 to move; in this embodiment, the force receiving member 400 is only arranged at one end of the processing box in the length direction. Preferably, the force receiving member 400 is arranged at the driving end (the end in the A1 direction) of the processing box. Specifically, the force receiving member 400 is fixedly arranged on the developing cover 140, and the force receiving member 400 is located at the lower end (the end in the C2 direction) of the developing cover 140, and the force receiving member 400 at least partially always protrudes from the lower surface of the processing box. The force receiving member 400 can be a block-shaped member or a rod-shaped member. The surface of the force receiving member 400 on the B1 side is the separation force receiving surface 410, and the surface of the force receiving member 400 on the B2 side is the contact force receiving surface 420. Both the separation force receiving surface 410 and the contact force receiving surface 420 protrude at least partially from the lower surface of the processing box. The force receiving member 400 and the developer protective cover 140 may be an integrally formed structure or a separate structure, and may be fixed to the developer protective cover 140 by bonding, snapping, or gluing.

[0065] The processing box of this embodiment has a force receiving member 400 only at one end. The driving end receives the force of the separation control mechanism 910, and the conductive end does not receive the force of the separation control mechanism 910. The force receiving member is fixed without complex movement / linkage, and the structure is simpler.

[0066] Alternatively, the force receiving member 400 may also be disposed only at the conductive end of the process cartridge, and in this case the fourth elastic member 600 is disposed close to the driving end of the process cartridge.

[0067] like Figure 5 As shown, in the process of loading the process box into the electronic imaging device, the process box is first placed on the tray component 930 of the electronic imaging device, and then the tray component 930 is pushed to move the process box into the electronic imaging device. When the process box moves with the tray component 930, it moves relative to the separation control mechanism 910 along the B2 direction. Since the force receiving member 400 is fixedly arranged on the developer cover 140 and protrudes from the lower surface of the process box, when the process box moves with the tray component 930, there is interference between the force receiving member 400 and the separation control mechanism 910. Based on this, the process box is also provided with a lifting mechanism for abutting against the tray component 930, specifically, it can be abutted against the abutting portion 931 of the tray component 930, so that one end of the process box provided with the force receiving member 400 is at least partially lifted up (lifted along the C1 direction), thereby avoiding the separation control mechanism 910 and preventing the two from interfering.

[0068] like Figure 5 As shown, in this embodiment, the lifting mechanism abuts against the abutment portion 931 of the tray component 930, so that the processing box is in a position where the force receiving member 400 cannot receive the force of the separation control mechanism 910. Specifically, the lifting mechanism is a first elastic member 710, which is installed on the driving side end cover 230. The elastic expansion direction of the first elastic member 710 is along the third direction. The first elastic member 710 is preferably a compression spring, one end of the spring is fixed at the upper end (the end in the C1 direction) of the driving side end cover 230, and the other end extends downward and is suspended. In the second direction, the first elastic member 710 is arranged close to the end in the B2 direction of the processing box. When the processing box is installed in the tray component 930, when the other end of the first elastic member 710 (the suspended end) abuts against the abutment portion 931, the first elastic member 710 is compressed to a certain extent, and the action force (elastic force) of the first elastic member 710 reacts to the processing box, causing the processing box to at least partially (a part of the driving end) be lifted up, and the force receiving member 400 also moves upward to a position where it cannot receive the action force of the separation control mechanism 910, that is, the force receiving member 400 and the separation control mechanism 910 have no overlapping part in the third direction (height direction), and when the processing box moves with the tray component 930, the force receiving member 400 will not interfere with the separation control mechanism 910.

[0069] Optionally, the first elastic member 710 may also be other elastic members such as elastic rubber, elastic sponge, spring sheet, etc., as long as it can be extended and retracted along the third direction or has an extension component in the third direction when it abuts against the abutting portion 931. The first elastic member 710 may also be disposed at other positions of the process box, abutting against other positions of the tray member 930 except the abutting portion 931, as long as the process box can be at least partially lifted up, so that the force receiving member 400 does not interfere with the sub-control mechanism 910.

[0070] Optionally, when the force receiving member 400 is only arranged at the conductive end (the end in the A2 direction), the lifting mechanism (the first elastic member 710) can also be correspondingly arranged at the conductive end of the processing box, such as the first elastic member 710 is installed on the conductive side end cover 240, and abuts against the structure on the A2 side of the tray component 930.

[0071] like Figure 5 As shown, when the processing box is loaded into the tray component 930 and moves into place with the tray component 930, the front door of the electronic imaging device is closed, and the pressing mechanism 920 in the electronic imaging device moves downward (moves along the C2 direction) and presses the upper surface of the processing box (specifically, it can be pressing the upper surface of the drive side end cover 230 and the conductive side end cover 240). The processing box is subjected to the pressing force of the pressing mechanism 920 of the electronic imaging device to overcome the force of the first elastic member 710 and moves downward (the first elastic member 710 is further compressed and deformed), and the force receiving member 400 moves downward to a position where it can receive the force of the separation control mechanism 910, that is, at this time, the force receiving member 400 and the separation control mechanism 910 have an overlapping portion in the third direction (height direction).

[0072] When the processing box needs to be taken out, the front door of the electronic imaging device is opened, and the pressing mechanism 920 moves upward. The pressing force on the processing box disappears, and the elastic deformation of the first elastic member 710 is restored, and a force in the direction of C1 (upward force) is exerted on the processing box. The driving end position of the processing box is lifted, and the force receiving member 400 also rises to a position where it cannot receive the force of the separation control mechanism 910. Thereafter, the tray component 930 is pulled out, and the force receiving member 400 will not interfere with the separation control mechanism 910.

[0073] like Figures 1 to 5 As shown, after the processing box is installed in the electronic imaging device or the previous developing process is completed, a preparation action will be performed, the electronic imaging device issues a command, the photosensitive drive head and the developing drive head of the electronic imaging device output a driving force, and control the separation control mechanism 910 to move in the direction B2, and after contacting the separation force receiving surface 410 of the force receiving member 400, a separation force in the direction B2 is applied to it, and the separation force also acts on the entire developing unit 100, driving the developing unit 100 to rotate counterclockwise (with Figure 3, counterclockwise from the angle of rotation), the developing roller 130 is separated from the photosensitive drum 220. At the same time, the protrusion 141 on the developing cover 140 pushes the abutment 530 during the counterclockwise rotation to overcome the force of the third elastic member 520 and retracts in the direction B1. The protrusion 141 moves downward over the abutment 530. After the protrusion 141 passes over, the abutment 530 extends again in the direction B2 under the force of the third elastic member 520 and abuts against the upper side of the protrusion 141, so that the developing unit 100 remains in the second position, the developing roller 130 is separated from the photosensitive drum 220, and at the same time, the developing drive head stops rotating. After the preparation action is completed, the photosensitive drive head also stops rotating. When the electronic imaging device does not need to perform the development work (commonly known as "printing"), it maintains the state of the preparation action being completed.

[0074] like Figures 1 to 5 As shown, when the electronic imaging device needs to perform a developing operation, the electronic imaging device issues a command to control the separation control unit to move in the direction B1, abut against the contact force receiving surface 420 of the force receiving member 400, and apply a contact force in the direction B1 to the developing unit 100, and the contact force acts on the developing unit 100, driving the developing unit 100 to rotate clockwise (in the direction of Figure 3 At the same time, the projection 141 on the developing cover 140 pushes the abutment 530 during the clockwise rotation to overcome the force of the third elastic member 520 and then retracts in the direction of B1. After the projection 141 moves upward over the abutment 530, the abutment 530 extends out in the direction of B2 again under the force of the third elastic member 520 and abuts against the lower side of the projection 141, so that the developing unit 100 remains in the first position, the developing roller 130 remains in contact with the photosensitive drum 220, and at the same time, the photosensitive drive head and the developing drive head of the electronic imaging device begin to rotate, and transmit the driving force to the photosensitive coupling 310 and the developing coupling 320, thereby driving the photosensitive drum 220 and the developing roller 130 to rotate for developing work.

[0075] When a color image needs to be developed, the four color processing cartridges are all in a state of drum-roller contact for developing. When a black image is developed alone, only the black processing cartridge is in a state of drum-roller contact, and the other three color processing cartridges are in a state of drum-roller separation, that is, the developing unit 100 of the color processing cartridge is kept in the second position and the developing coupling 320 is not driven, while the photosensitive drums 220 of the four color processing cartridges are still driven by the photosensitive drive head and rotated, so that no large friction is generated with the transfer belt, so that the transfer belt can rotate smoothly, and then the developing work can be carried out smoothly.

[0076] The processing box of this embodiment is only provided with a force receiving member 400 at one end in the length direction, and the force receiving member 400 is set to be fixed and immovable, and a lifting mechanism is provided to cooperate with the tray component 930 to lift the processing box at least partially, so that the fixed force receiving member 400 can avoid the separation control mechanism 910 during installation to prevent interference between the two. Compared with the prior art, the processing box of this embodiment has fewer parts, less linkage between the parts, simple structure, reduced manufacturing difficulty and reduced cost.

[0077] Embodiment 2

[0078] This embodiment provides another processing box, which is different from the first embodiment in that the structure of the lifting mechanism is different.

[0079] like Figure 6 and Figure 7 As shown, in this embodiment, the lifting mechanism includes a second elastic member 720 and a sliding member 730. The sliding member 730 is slidably disposed on the driving side end cover 230. The second elastic member 720 is limited between the driving side end cover 230 and the sliding member 730. Specifically, the elastic expansion and contraction direction of the second elastic member 720 is along the second direction (width direction), and the moving direction of the sliding member 730 is also along the second direction. One end of the second elastic member 720 is connected to the driving side end cover 230, and the other end is connected to the B1 direction end of the sliding member 730. When the sliding member 730 slides along the B1 direction, the second elastic member 720 is compressed. The second elastic member 720 is preferably a compression spring, and can also be elastic rubber, elastic sponge, spring sheet, etc. The driving side end cover 230 and the sliding member 730 are both provided with mounting protrusions that facilitate the connection of the second elastic member 720.

[0080] like Figure 7 and Figure 8 As shown, the sliding member 730 is provided with a slide groove 731, which extends along the second direction (width direction), and the driving side end cover 230 is provided with a guide column 231. During assembly, the guide column 231 passes through the slide groove 731 to slide the sliding member 730 on the driving side end cover 230. The sliding range of the sliding member 730 in the second direction is determined by the length of the slide groove 731. After at least a part of the guide column 231 passes through the slide groove 731, it extends outward and abuts against the outer side surface (the side in the A1 direction) of the sliding member 730 to prevent the sliding member 730 from falling off. Optionally, the guide column 231 can also be provided on the sliding member 730, and the slide groove 731 that slidably cooperates with the guide column can be provided on the driving side end cover 230.

[0081] Further, such as Figure 7 and Figure 8As shown, a hook portion 733 is further provided on the inner side (the side in the A2 direction) of the sliding member 730, and a through groove 232 is provided on the driving end cover 230 for the hook portion 733 to pass through. The through groove 232 can limit the sliding member 730 in the third direction, and the part (hook-shaped part) of the hook portion 733 that passes through the through groove 232 can also abut against the inner side surface of the driving side end cover 230, and can also play an anti-slip effect.

[0082] like Figure 8 and Fig. 9 As shown, the sliding member 730 has a sloped portion 732 abutting against the abutting portion 931, and the sloped portion 732 has a first end 732a and a second end 732b, and the first end 732a is closer to the force receiving member 400 than the second end 732b; that is, in the second direction, the first end 732a is one end of the sloped portion 732 in the B1 direction, and the second end 732b is one end of the sloped portion 732 in the B2 direction; in the third direction, the first end 732a is the lowest end of the sloped portion 732 in the C2 direction, and the second end 732b is the highest end of the sloped portion 732 in the C1 direction, that is, the extension direction of the sloped portion 732 extends from one side of the B1 and C2 directions to one side of the B2 and C1 directions (that is, extends backward and upward).

[0083] like Fig. 9 As shown, the force exerted by the second elastic member 720 on the sliding member 730 is always in the direction of B2, so that the sliding member 730 is maintained at a position close to the rear end (B2 direction end) of the processing box when no external force is applied. When the processing box is installed in the tray component 930, the abutment portion 931 of the tray component 930 abuts against the first end 732a of the inclined portion 732 or a position close to the first end 732a. At this time, the driving end of the processing box is at least partially lifted up, so that the force receiving member 400 is located on the upper side of the separation control mechanism 910 in the third direction, that is, the force receiving member 400 and the separation control mechanism 910 have no overlapping part in the third direction (height direction). When the tray component 930 moves with the processing box, the force receiving member 400 will not interfere with the separation control mechanism 910.

[0084] like Fig.10As shown, after the tray component 930 and the processing box are moved into place, the front door of the electronic imaging device is closed, and the pressing mechanism 920 in the electronic imaging device moves downward and presses the upper surface of the processing box (specifically, it can be pressing the upper surface of the driving side end cover 230 and the conductive side end cover 240). When the processing box is pressed by the pressing force of the pressing mechanism 920 of the electronic imaging device, the pushing force of the abutment part 931 on the inclined surface 732 overcomes the action force of the second elastic member 720, so that the sliding member 730 moves in the direction of B1, and the abutment part 931 slides relatively from the first end 732a to the second end 732b along the inclined surface 732, and the driving end of the processing box moves downward, driving the force receiving member 400 to move to a position where it can receive the action force of the separation control mechanism 910, that is, at this time, the force receiving member 400 and the separation control mechanism 910 have an overlapping part in the third direction (height direction).

[0085] When the processing box needs to be taken out, the front door of the electronic imaging device is opened, and the pressing mechanism 920 moves upward. The pressing force on the processing box disappears, and the sliding member 730 moves in the B2 direction under the action of the second elastic member 720. The abutment portion 931 slides relatively from the second end 732b to the first end 732a along the inclined portion 732. At the same time, the driving end position of the processing box is lifted, and the force receiving member 400 also rises to a position where it cannot receive the force of the separation control mechanism 910. After that, the tray component 930 is pulled out, and the force receiving member 400 will not interfere with the separation control mechanism 910.

[0086] The other structures and operating modes of the processing box of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0087] 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 a tray assembly of an electronic imaging device, the electronic imaging device comprising a separation control mechanism, characterized in that: The processing box comprises: A drum unit rotatably supports a photosensitive drum; A developing unit rotatably supports a developing roller; A force receiving member, fixedly disposed on the developing unit, for receiving the force of the separation control mechanism to drive the developing unit to move relative to the drum unit; The lifting mechanism is arranged on the processing box and can abut against the tray component to place the processing box in a position where the force receiving member cannot receive the force of the separation control mechanism.

2. The process cartridge according to claim 1, wherein: The force receiving member is only arranged at one end of the process box in the length direction.

3. The process cartridge according to claim 2, wherein: The lifting mechanism and the force receiving member are located at the same end of the process cartridge.

4. The process cartridge according to claim 1, wherein: The force receiving member at least partially protrudes all the way from the lower surface of the process box.

5. The process cartridge according to any one of claims 1 to 4, characterized in that: When the lifting mechanism abuts against the tray component, the force receiving member and the separation control mechanism have no overlapping portion in the height direction.

6. The process cartridge according to claim 5, wherein: The lifting mechanism is a first elastic member. When the first elastic member contacts the tray component, the force of the first elastic member causes the processing box to at least partially lift up.

7. The process cartridge according to claim 6, wherein: The processing box includes an end cover, and the first elastic member is installed on the end cover.

8. The process cartridge according to claim 6, wherein: The processing box is pressed by the pressing force of the pressing mechanism of the electronic imaging device to overcome the action force of the first elastic member and moves downward, driving the force receiving member to move to a position where it can receive the action force of the separation control mechanism, and the force receiving member and the separation control mechanism have an overlapping part in the height direction.

9. The process cartridge according to any one of claims 1 to 4, characterized in that: The lifting mechanism includes a second elastic member and a sliding member, the sliding member is slidably disposed on the process cartridge, the sliding member has an inclined portion abutting against the tray member, the inclined portion has a first end and a second end, the first end is closer to the force receiving member than the second end; The second elastic member is defined between the process cartridge and the slide member, and the second elastic member keeps the slide member at a position where the first end of the slope portion abuts against the tray member, so that the process cartridge is at least partially lifted.

10. The process cartridge according to claim 9, wherein: The processing box comprises an end cover, one of the end cover and the sliding member is provided with a slide groove, and the other is provided with a guide column slidably matched with the slide groove; the slide groove extends along the width direction of the processing box.

11. The process cartridge according to claim 9, wherein: When the processing box is subjected to the pressing force of the pressing mechanism of the electronic imaging device, the pushing force of the abutment part of the tray component on the inclined surface overcomes the force of the second elastic part, so that the sliding part moves, and the abutment part slides from the first end to the second end along the inclined surface, and the processing box moves downward, driving the power receiving part to move to a position where it can receive the force of the separation control mechanism.

12. The process cartridge according to claim 4, wherein: The developing unit includes a developing cover, and the force receiving member is disposed at a lower end of the developing cover.

13. The process cartridge according to any one of claims 1 to 4, 6 to 8, 10 to 12, characterized in that: The developing unit can receive the force of the separation control mechanism through the force receiving member so as to move relative to the drum unit between a first position and a second position. In the first position, the developing roller contacts the photosensitive drum, and in the second position, the developing roller is separated from the photosensitive drum.

14. The process cartridge according to claim 13, wherein: The invention also comprises a holding mechanism, wherein the holding mechanism is arranged on the drum unit, and the developing unit is provided with a protrusion matched with the holding mechanism, so that the developing unit is kept in the first position or the second position.

15. The process cartridge according to claim 14, wherein: The holding mechanism includes a third elastic member and a contact member, and the third elastic member is configured to cause the contact member to abut against an upper side or a lower side of the protrusion, thereby holding the developing unit at the second position or the first position.

16. The process cartridge according to claim 14 or 15, characterized in that: It also includes a fourth elastic member connected between the drum unit and the developing unit, the fourth elastic member exerts a force on the developing unit to move from the second position to the first position, and the force of the fourth elastic member is smaller than the force of the third elastic member.

17. The process cartridge according to claim 16, wherein: The fourth elastic member and the force receiving member are respectively located at different ends of the process cartridge in a length direction.

Images