Process cartridge

Abstract

Disclosed in the present invention is a process cartridge, comprising: a photoconductor drum, wherein an electrostatic latent image can be formed on the photoconductor drum; a developer accommodating chamber for accommodating a developer therein; a rotatable developer roller, wherein the axial direction of the developer roller extends in the length direction, and the developer roller is configured to transfer the developer to the photoconductor drum to develop the electrostatic latent image on the photoconductor drum; a rotatable toner supply roller, wherein the axial direction of the toner supply roller extends in the length direction, and the toner supply roller is in contact with the developer roller to supply the developer to the developer roller; a developing chamber, wherein the developer roller is located in the developing chamber, and when the process cartridge is mounted to an electronic imaging device, the developing chamber is located above the developer accommodating chamber; and a developing coupling which receives a driving force to enable the developer roller and the toner supply roller to rotate, and when the developer roller and the toner supply roller are driven to rotate, the peripheral speed of the surface of the toner supply roller is smaller than or equal to the peripheral speed of the surface of the developer roller. The solution ensures stable driving of the developer roller, the toner supply roller, etc., in a developing unit.

Description

A processing box Technical Field

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

[0002] Electronic imaging devices form images on recording materials using electrophotographic imaging. These devices include electrophotographic copiers, electrophotographic printers (such as LED printers and laser beam printers), and fax machines. Typically, these devices have a removable process cartridge, which includes a photosensitive unit and a developing unit. The photosensitive unit includes a rotatable photosensitive drum and charging roller, while the developing unit includes a rotatable developing roller and a powder feed roller.

[0003] The process cartridge is configured to receive driving force from the electronic imaging device and transmit the power to components on the process cartridge via drive components such as gears, thereby driving the process cartridge. The drive components of the process cartridge in the prior art are not properly configured, and the driving force transmission is not stable.

[0004] In addition, in the prior art, a developer supplying member is provided in the developer accommodating chamber to supply developer to the developer chamber, so that the developer is effectively supplied to the developer roller at the upper part of the developer chamber. However, the supply efficiency of the existing developer supplying member is not high, and a large amount of developer remains in the developer accommodating chamber. Summary of the Invention

[0005] According to one aspect of the present invention, there is provided a process cartridge that is detachably mounted in an electronic imaging device, the process cartridge having a drive end and a non-drive end in a length direction, the process cartridge comprising:

[0006] a photosensitive drum on which an electrostatic latent image can be formed;

[0007] a developer containing chamber, containing developer therein;

[0008] a rotatable developing roller, wherein the axial direction of the developing roller extends along the length direction, and the developing roller is configured to transport developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum;

[0009] a rotatable powder feeding roller, wherein the axial direction of the powder feeding roller extends along the length direction, and the powder feeding roller contacts the developing roller to supply the developer to the developing roller;

[0010] a developing chamber, wherein the developing roller is located in the developing chamber, and when the process cartridge is mounted on the electronic imaging device, the developing chamber is located above the developer containing chamber;

[0011] A developing coupling receives a driving force to rotate the developing roller and the powder feeding roller;

[0012] When the developing roller and the powder feeding roller are driven to rotate, the circumferential speed of the surface of the powder feeding roller is less than or equal to the circumferential speed of the surface of the developing roller.

[0013] In some embodiments, the developing coupling is provided at the driving end of the developing roller or the powder feeding roller;

[0014] The non-driving end of the developing roller is provided with a developing gear;

[0015] The non-driving end of the powder feeding roller is provided with a powder feeding gear;

[0016] The developing gear is engaged with the powder feeding gear to transmit the driving force from the developing roller to the powder feeding roller or from the powder feeding roller to the developing roller.

[0017] In some embodiments, the number of teeth of the powder feeding gear is greater than the number of teeth of the developing gear.

[0018] In some embodiments, the diameter of the developing roller is larger than the diameter of the powder feeding roller.

[0019] According to one aspect of the present invention, there is provided a process cartridge that is detachably mounted in an electronic imaging device, the process cartridge having a drive end and a non-drive end in a length direction, the process cartridge comprising:

[0020] a photosensitive drum on which an electrostatic latent image can be formed;

[0021] a developer containing chamber, containing developer therein;

[0022] a rotatable developing roller, wherein the axial direction of the developing roller extends along the length direction, and the developing roller is configured to transport developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum;

[0023] a rotatable powder feeding roller, wherein the axial direction of the powder feeding roller extends along the length direction, and the powder feeding roller contacts the developing roller to supply the developer to the developing roller;

[0024] a developing chamber, wherein the developing roller is located in the developing chamber, and when the process cartridge is mounted on the electronic imaging device, the developing chamber is located above the developer containing chamber;

[0025] A developing coupling is provided at the driving end of the powder feeding roller and receives driving force to drive the powder feeding roller to rotate;

[0026] A powder feeding gear is provided at the non-driving end of the powder feeding roller;

[0027] a first transmission wheel, meshing with the powder feeding gear to receive driving force;

[0028] a second transmission wheel, fixedly arranged at the end of the developing roller;

[0029] A transmission belt is connected to the first transmission wheel and the second transmission wheel to transmit the driving force from the powder feeding roller to the developing roller.

[0030] According to one aspect of the present invention, there is provided a process cartridge that is detachably mounted in an electronic imaging device, the process cartridge having a drive end and a non-drive end in a length direction, the process cartridge comprising:

[0031] a photosensitive drum on which an electrostatic latent image can be formed;

[0032] a developer containing chamber, containing developer therein;

[0033] a rotatable developing roller, wherein the axial direction of the developing roller extends along the length direction, and the developing roller is configured to transport developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum;

[0034] a rotatable powder feeding roller, wherein the axial direction of the powder feeding roller extends along the length direction, and the powder feeding roller contacts the developing roller to supply the developer to the developing roller;

[0035] a developing chamber, wherein the developing roller is located in the developing chamber, and when the process cartridge is mounted on the electronic imaging device, the developing chamber is located above the developer containing chamber;

[0036] A developing coupling is provided at the driving end of the developing roller and receives a driving force to drive the developing roller to rotate;

[0037] a developing gear, disposed at a non-driving end of the developing roller;

[0038] a first transmission wheel meshing with the developing gear to receive a driving force;

[0039] a second transmission wheel, fixedly arranged at the end of the powder feeding roller;

[0040] A transmission belt is connected to the first transmission wheel and the second transmission wheel to transmit the driving force from the developing roller to the powder feeding roller.

[0041] In some embodiments, a pressing wheel is further included to press the transmission belt to tighten the transmission belt.

[0042] In some embodiments, the first transmission wheel includes a gear portion and a mounting portion, the gear portion is engaged with the powder feeding gear or the developing gear, and the mounting portion is used to mount the transmission belt.

[0043] In some embodiments, a developer supply member is provided in the developer receiving chamber, and a stirring gear is provided at a non-driving end of the developer supply member;

[0044] The stirring gear is directly or indirectly engaged with the first transmission wheel to receive driving force.

[0045] In some embodiments, at least one intermediate transmission gear is further included, which is arranged between the first transmission wheel and the stirring gear.

[0046] According to one aspect of the present invention, there is provided a process cartridge that is detachably mounted in an electronic imaging device, the process cartridge having a drive end and a non-drive end in a length direction, the process cartridge comprising:

[0047] a photosensitive drum on which an electrostatic latent image can be formed;

[0048] a developer containing chamber, containing developer therein;

[0049] a rotatable developing roller, wherein the axial direction of the developing roller extends along the length direction, and the developing roller is configured to transport developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum;

[0050] a rotatable powder feeding roller, wherein the axial direction of the powder feeding roller extends along the length direction, and the powder feeding roller contacts the developing roller to supply the developer to the developing roller;

[0051] a developing chamber, wherein the developing roller is disposed in the developing chamber, and when the process cartridge is mounted on the electronic imaging device, the developing chamber is located above the developer containing chamber;

[0052] The developer supplying member acts on the developer accommodating chamber by air pressure to transport the developer in the developer accommodating chamber to the developing hopper.

[0053] In some embodiments, the developer supplying member includes an air pump configured to blow and suck air into the developer receiving chamber through a reciprocating motion of compression and expansion, thereby delivering the developer to the developing chamber.

[0054] In some embodiments, the air pump is an air bag.

[0055] In some embodiments, the air pump is an elastic airbag, which can be restored by its own elastic force after being compressed or stretched.

[0056] In some embodiments, the developer supplying member further includes a first rotating member, which converts a rotational driving force into a linear motion in its axial direction, thereby driving the air pump to move in a linear direction to achieve blowing or suction.

[0057] In some embodiments, the first rotating member and the air pump are configured to perform linear motion in a direction parallel to the axial direction of the developing roller.

[0058] In some embodiments, a force-bearing protrusion is provided on the first rotating member. When the first rotating member receives driving force to rotate, the force-bearing protrusion is acted upon by external force, causing the first rotating member to move linearly along its axial direction, and driving the air pump to move to achieve blowing or suction.

[0059] In some embodiments, a mating hole is further provided, and the force-bearing protrusion on the first rotating member has a spirally shaped inclined surface. When the force-bearing protrusion rotates to the mating hole, it can extend from the mating hole, and the air pump extends. When the force-bearing protrusion rotates away from the mating hole, it can retract from the mating hole under the action of the inclined surface, and the air pump compresses.

[0060] In some embodiments, the developer supply member further includes a power receiving member for receiving a driving force and driving the first rotating member to rotate;

[0061] The power receiving member is coaxially arranged with the air pump and the first rotating member. The first rotating member moves synchronously with the power receiving member in the rotational direction and can slide relative to the power receiving member in the axial direction.

[0062] In some embodiments, a developing coupling is further included, which is used to receive driving force from the electronic imaging device to drive the powder feeding roller and the developing roller to rotate, and the power receiving member is configured to obtain driving force directly or indirectly from the developing coupling.

[0063] In some embodiments, the power receiving member is a cylindrical structure, and the first rotating member is disposed inside the power receiving member;

[0064] A first guide portion is provided on the inner wall of the power receiving member, and a second guide portion is provided on the first rotating member. The first rotating member reciprocates axially in the power receiving member through the cooperation of the first and second guide portions.

[0065] In some embodiments, a powder supply channel is provided in the developer containing chamber, and the channel is connected to the air pump so as to transport the developer to the developing chamber through the air pressure of the air pump.

[0066] In some embodiments, the powder supply channel connects the air pump and the developing chamber, and a powder supply hole is provided on the powder supply channel. When the air pump inhales air, the developer enters the powder supply channel from the powder supply hole. When the air pump blows air, the developer in the powder supply channel is blown out to the developing chamber.

[0067] In some embodiments, the powder supply channel includes a first channel and a second channel, the first channel is provided at the bottom of the developer receiving chamber, one end of the first channel is connected to the air pump, the first channel is provided with the powder supply hole, and the second channel connects the developing chamber and the first channel and is used to guide the developer to be transported to the developing chamber;

[0068] The first passage is provided in a direction parallel to the axial direction of the developing roller, and the second passage is provided in a direction intersecting the axial direction of the developing roller.

[0069] According to one aspect of the present invention, there is provided a process cartridge that is detachably mounted in an electronic imaging device, the process cartridge having a drive end and a non-drive end in a length direction, the process cartridge comprising:

[0070] a photosensitive drum on which an electrostatic latent image can be formed;

[0071] a developer containing chamber, containing developer therein;

[0072] a rotatable developing roller, wherein the axial direction of the developing roller extends along the length direction, and the developing roller is configured to transport developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum;

[0073] a rotatable powder feeding roller, wherein the axial direction of the powder feeding roller extends along the length direction, and the powder feeding roller contacts the developing roller to supply the developer to the developing roller;

[0074] a developing chamber, wherein the developing roller is disposed in the developing chamber, and when the process cartridge is mounted on the electronic imaging device, the developing chamber is located above the developer containing chamber;

[0075] The developer supply member is used to transport the developer in the developer accommodating chamber to the developing hopper. The developer supply member includes a stirring frame, and the stirring frame is provided to be able to reciprocate in the height direction of the process cartridge.

[0076] In some embodiments, the developer supply member further includes a second rotating member, which can act on the stirring frame when rotating, so that the stirring frame is displaced in a height direction of the process cartridge.

[0077] In some embodiments, the second rotating member includes:

[0078] a rotating rod rotatably disposed in the developer accommodating chamber; and

[0079] An action protrusion is fixedly arranged on the rotating rod to rotate with the rotating rod. When the rotating rod rotates, the action protrusion can act on the stirring frame to cause the stirring frame to be displaced in the height direction of the processing box.

[0080] In some embodiments, the developer supplying member further includes an elastic member connected to the stirring frame, and configured to reset the stirring frame when the stirring frame is separated from the actuating protrusion.

[0081] In some embodiments, the second rotating member is disposed above the stirring frame;

[0082] When the action protrusion rotates to abut against the stirring frame, it presses the stirring frame to move downward, and the elastic member is deformed. When the action protrusion rotates to separate from the stirring frame, the stirring frame is reset upward under the action of the elastic member's deformation recovery.

[0083] In some embodiments, the stirring frame includes a rod and a blade fixed to the rod;

[0084] Guide holes are respectively provided on both side walls of the developer accommodating chamber. The guide holes extend in the height direction of the process box, and both ends of the rod body are movably arranged in the guide holes.

[0085] In some embodiments, a stirring gear is further included, configured to receive a rotational driving force and drive the second rotating member to rotate.

[0086] In some embodiments, the developing chamber and the developer receiving chamber are separated by a partition wall;

[0087] The partition wall is located between the powder feeding roller and the developing roller, so that a portion of the powder feeding roller is located in the developer accommodating chamber and another portion is located in the developing chamber to contact the developing roller.

[0088] The beneficial effects of the present invention are as follows: the present solution ensures that the developing roller, powder feeding roller, etc. in the developing unit can be driven stably; in addition, it also provides a developer supply component with a simpler structure and higher powder feeding efficiency, thereby improving the circulation efficiency of the developer and reducing developer residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] FIG1 is a cross-sectional view of a process cartridge according to a first embodiment of the present invention;

[0090] FIG2 is a schematic diagram of the overall structure of the process cartridge according to the first embodiment of the present invention;

[0091] FIG3 is a schematic structural diagram of a developing unit according to a first embodiment of the present invention;

[0092] FIG4 is a schematic diagram of a partial structure of a driving end of a developing unit according to a first embodiment of the present invention;

[0093] 5 is a schematic diagram of the exploded structure of the driving end of the developing unit according to the first embodiment of the present invention;

[0094] 6 is a schematic diagram of inputting a developing driving force to the developing roller shaft according to the first embodiment of the present invention;

[0095] 7 is a schematic diagram of a gear train of a driving assembly of a developing unit according to a first embodiment of the present invention;

[0096] 8 is a schematic diagram of a gear train of a driving assembly of another embodiment of the developing unit according to Example 1 of the present invention;

[0097] 9 is a schematic structural diagram of the driving end of the process cartridge according to the second embodiment of the present invention;

[0098] 10 is a schematic structural diagram of the non-driving end of the process cartridge according to the second embodiment of the present invention;

[0099] 11 is a schematic structural diagram of the driving end of the process cartridge according to the third embodiment of the present invention;

[0100] 12 is a schematic structural diagram of the non-driving end of the process cartridge according to the third embodiment of the present invention;

[0101] 13 is a schematic structural diagram of the driving end of the process cartridge according to the fourth embodiment of the present invention;

[0102] 14 is a schematic structural diagram of the non-driving end of the process cartridge according to the fourth embodiment of the present invention;

[0103] Figure 15 is a schematic structural diagram of a process cartridge of the prior art;

[0104] FIG16 is a schematic structural diagram of a process cartridge of the prior art from another perspective;

[0105] 17 is a schematic structural diagram of a process cartridge according to a fifth embodiment of the present invention;

[0106] 18 is a schematic structural diagram of the process cartridge at the non-driving end of Example 5 of the present invention, with structures such as the developing end cover omitted;

[0107] 19 is an exploded schematic diagram of the process cartridge at the non-driving end of Example 5 of the present invention, with structures such as the developing end cover omitted;

[0108] Figure 20 is a schematic structural diagram of a developing end cover according to a fifth embodiment of the present invention;

[0109] 21 is a schematic structural diagram of a process cartridge according to a sixth embodiment of the present invention;

[0110] FIG22 is a schematic structural diagram of the process cartridge according to the sixth embodiment of the present invention from another perspective, with the developing end cover and other structures omitted;

[0111] 23 is a schematic structural diagram of a process cartridge according to a seventh embodiment of the present invention;

[0112] FIG24 is a schematic structural diagram of a developing frame, a developing roller, and a powder feeding roller according to a seventh embodiment of the present invention, viewed from the non-driving end toward the driving end;

[0113] Figure 25 is a cross-sectional view of the developing frame, developing roller and powder feeding roller of embodiment seven of the present invention. DETAILED DESCRIPTION

[0114] The present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only some, not all, of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0115] It should be noted that the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0116] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "fixed," and the like should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0117] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0118] In the above description, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 present invention. 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0119] Electrophotographic imaging devices use, for example, an electrophotographic imaging process to form an image on a recording material. Examples of such devices include electrophotographic copiers, electrophotographic printers (such as LED printers and laser printers), and electrophotographic printer-type fax machines. A process cartridge 70 is removably mounted in the main assembly of the electrophotographic imaging device. The process cartridge 70 includes, for example, a photosensitive drum 1 and a developing roller 25 for developing the electrostatic latent image formed on the photosensitive drum 1. The main assembly of the electrophotographic imaging device includes a drum drive and a developing drive.

[0120] Example 1

[0121] As shown in Figures 1-3, the process cartridge 70 provided in this embodiment includes a drum unit 26 as a first unit and a developer unit 4 as a second unit. The process cartridge 70 is generally rectangular, with the developer unit 4 and drum unit 26 positioned opposite each other across the width of the process cartridge 70. One end of the process cartridge 70 in the longitudinal direction is a drive end 111, and the other end is a non-drive end 112. The drum unit 26 includes a drum frame 27, a photosensitive drum 1, a charging roller 2, and a cleaning member 6. The developer unit 4 includes a developer frame 31, a developer roller 25, a powder feed roller 34, and a developer supply member 36.

[0122] As shown in Figures 1-2, the photosensitive drum 1 is rotatably mounted to the drum frame 27 of the drum unit 26 via a front drum bearing 10 and a rear drum bearing 11. The photosensitive drum 1 is provided with a drum coupling 16 and a flange 19 at its ends. The drum coupling 16 is located at the drive end 111, and the flange 19 is located at the non-drive end 112. The front drum bearing 10 and the rear drum bearing 11 are respectively provided at both ends of the drum frame 27, with the rear drum bearing 11 being provided at the drive end 111 of the drum frame 27 and the front drum bearing 10 being provided at the non-drive end 112 of the drum frame 27. The front drum bearings 10 and the rear drum bearings 11 are provided to rotatably support the photosensitive drum 1. The rear drum bearing 11 supports the drum coupling 16 coupled to the photosensitive drum 1, and the front drum bearing 10 supports the flange 19. The drum coupling 16 is used to engage with a drum drive member in the main assembly to transmit a rotational driving force (a first rotational driving force) from the electronic imaging device to the photosensitive drum 1. The axial direction of the photosensitive drum 1 extends along the length of the process cartridge 70. In the height direction, the photosensitive drum 1 is located at the upper end of the drum unit 26. When the process cartridge 70 is installed in the electronic imaging device, the photosensitive drum 1 is located at the end of the drum unit 26 opposite to the gravity direction G (ie, the upper end).

[0123] As shown in Figure 1, a charging roller 2 and a cleaning member 6 are arranged on the circumferential surface of a photosensitive drum 1. The cleaning member 6 is composed of an elastic member formed using a rubber blade and a cleaning support member 8. The free end of the elastic member, which is arranged to contact the photosensitive drum 1, is oriented opposite to the direction of rotation of the photosensitive drum 1. Furthermore, the residual developer removed from the surface of the photosensitive drum 1 by the cleaning member 6 falls into a removed developer chamber 27a (also called a waste toner bin). Furthermore, a receiver plate 29, which prevents the removed developer in the removed developer chamber 27a from leaking, contacts the photosensitive drum 1.

[0124] The electronic imaging device transmits driving force to the drum unit 26, so that the photosensitive drum 1 is rotationally driven according to the imaging operation. The charging roller 2 is rotatably mounted to the drum unit 26 via the charging roller bearing 28 and is urged against the photosensitive drum 1 by the charging roller urging member 46, thereby rotating due to the rotation of the photosensitive drum 1.

[0125] As shown in Figures 1-3, the developer unit 4 includes a developing roller 25 that rotates in contact with the photosensitive drum 1 and a developing frame 31 for supporting the developing roller 25. The developing frame 31 encloses a developing chamber 31b and a developer storage chamber 31c (also known as a powder hopper). The developing chamber 31b and the developer storage chamber 31c are arranged adjacent to each other in the height direction of the process cartridge. The developing chamber 31b and the developer storage chamber 31c are interconnected, with the developing chamber 31b located above the developer storage chamber 31c in the height direction. The developing roller 25 is disposed in the developing chamber 31b. When the process cartridge is installed in the electronic imaging device, the developer storage chamber 31c, which stores developer, is located below the developing chamber 31b relative to the direction of gravity G. These chambers are separated by a partition wall 31d. The developer storage chamber 31c is located below the developing roller 25 and the powder feed roller 34 relative to the direction of gravity G. Furthermore, the partition wall 31d is provided with an opening 31e through which the developer passes when the developer is supplied from the developer accommodating chamber 31c to the developing chamber 31b. The axial direction of the developing roller 25 extends along the longitudinal direction of the process cartridge (i.e., the axial direction of the developing roller 25 is parallel to the axial direction of the photosensitive drum 1), and both ends of the developing roller 25 are rotatably supported by the developing frame 31 via the front developing bearing 12 and the rear developing bearing 13, which are respectively provided at both ends of the developing frame 31.

[0126] As shown in FIG. 1 , a powder feeding roller 34 and a developing blade 35 are provided on the circumferential surface of the developing roller 25 . The powder feeding roller 34 can rotate in contact with the developing roller 25 , and the developing blade 35 is used to control the thickness of the developer layer on the developing roller 25 .

[0127] As shown in Figure 1, the powder feed roller 34 is composed of a metal powder feed roller shaft 34j and a sponge portion 34a. The sponge portion 34a is an elastic portion that covers the outer circumference of the shaft, with the shaft end exposed. The powder feed roller 34 is arranged so that the sponge portion 34a contacts the developing roller 25 with a predetermined penetration distance. Furthermore, a leakage prevention plate 33 is provided as a developer (component) contact plate that contacts the developing roller 25 to prevent developer from leaking out of the developing frame 31.

[0128] As shown in Figure 1, a developer supply member 36 (stirring rack) is provided in the developer accommodating chamber 31c. The developer supply member 36 is a supply component for supplying developer to the developing chamber 31b through the opening 31e while stirring the developer contained in the developer accommodating chamber 31c. The developer accommodating chamber 31c is positioned downward relative to the direction of gravity G, and therefore, the developer supply member 36 is positioned below the developing chamber 31b relative to the direction of gravity. In other words, the developing chamber 70 in this embodiment has a developer upward pumping configuration in which the developer supply member 36 supplies developer from the developer accommodating chamber 31c to the developing chamber 31b against gravity. The developer accommodating chamber 31c is positioned at the bottom relative to the direction of gravity G, and the developing chamber 31b is positioned above the developer accommodating chamber 31c relative to the direction of gravity G.

[0129] As shown in Figures 1-3, the developing unit 4 is rotatably mounted to the drum unit 26. The front support pin 14 and the rear support pin 15 engage with the hanging hole 12a of the front developing bearing 12 and the hanging hole 13a of the rear developing bearing 13, respectively. The front support pin 14 and the rear support pin 15 are press-fitted into the drum frame 27. As a result, the developing unit 4 is rotatably supported by the drum frame 27 and can swing / rotate relative to the drum unit 26 between an operating position and a separated position. In the operating position, the developing roller 25 contacts the photosensitive drum 1 and can perform a developing operation. In the separated position, the developing roller 25 and the photosensitive drum 1 are separated and cannot perform a developing operation. The front support pin 14 and the rear support pin 15 serve as a rotation axis.

[0130] As shown in FIG3 , the developing unit 4 is configured so that during image formation of the process cartridge 70, an urging spring 32 provided at the end of the developing frame 31 can be pressed against the drum unit 26. By these urging springs 32, an urging force for causing the developing roller 25 to contact the photosensitive drum 1 is generated, with the hanging hole 12 a of the front developing bearing 12 and the hanging hole 13 a of the rear developing bearing 13 serving as a rotation center.

[0131] As shown in Figures 4-5, the developing unit 4 also includes a drive assembly, which includes a driving force receiving portion (arranged at the driving end 111) supported by the rear developing bearing 13, and the driving force receiving portion is used to engage with the developing drive member of the main assembly to transmit the rotational driving force (second rotational driving force) from the electronic imaging device to the developing roller 25. The developing roller shaft 25j of the developing roller 25 and the powder feeding roller shaft 34j of the powder feeding roller 34 are rotatably engaged with the inner peripheral surface of the rear developing bearing 13. Here, the support structure in one longitudinal end side of the developing roller 25 and the powder feeding roller 34 is described, but similarly, in the other longitudinal end (non-driving end 112), the developing roller shaft 25j and the powder feeding roller shaft 34j are rotatably engaged with the inner peripheral surface of the front developing bearing 12. In this embodiment, a developing coupling 20 is used as a driving force receiving portion, that is, the developing coupling 20 is arranged at the driving end 111 and receives the driving force of the electronic imaging device.

[0132] As shown in Figure 5, the developing coupling 20 includes a driven side coupling portion 21 as a driven portion, an intermediate coupling portion 22 as an intermediate portion, and a driving side coupling portion 23 as a drive receiving portion. The driven side coupling portion 21 is fixed and mounted to the driving end 111 of the developing roller 25. As a fixing method, there is a method of connecting by a spring pin or a parallel pin. The driving side coupling portion 23 (first drive receiving portion) is used to receive a driving force from the electronic imaging device. In addition, in this embodiment, the H direction and the I direction are in a substantially perpendicular relationship. The shaft portion 23d of the driving side coupling portion 23 can be rotatably retained in the hole 41d of the retaining portion 41, wherein the retaining portion 41 is capable of moving along the groove 43a of the developing end cover 43 in a direction intersecting the axial direction of the developing roller 25. In addition, the driving side coupling portion 23 is formed as a whole with three protruding members 23c1, 23c2 and 23c3, and the three protruding members 23c1, 23c2 and 23c3 can be engaged with the developing driving member in the main component. The developing coupling 20 transmits the rotational driving force from the electronic imaging device to the developing roller 25 and allows deviation between the axis of the developing driving member in the electronic imaging device and the axis of the developing roller 25 (ie, the two may be coaxial or non-coaxial).

[0133] As shown in Figure 5 , the driven-side engaging portion 21 is integrally formed with a rib 21a. The intermediate engaging portion 22 is provided with a groove 22a, and the rib 21a and the groove 22a engage with each other, allowing the rib 21a to move in the direction of arrow H in Figure 16 . The driving-side engaging portion 23 is integrally formed with a rib 23b. The intermediate engaging portion 22 is provided with a groove 22b, and the rib 23b and the groove 22b engage with each other, allowing movement in the direction of arrow I in Figure 5 . In this embodiment, the H direction and the I direction are substantially perpendicular. The intermediate engaging portion 22 engages with the driven-side engaging portion 21 and the driving-side engaging portion 23, forming an intermediate portion for transmitting the driving force input to the driving-side engaging portion 23 to the driven-side engaging portion 21. The intermediate engaging portion 22 is capable of moving in a direction intersecting the axial direction of the developing roller 25 while maintaining engagement with each of the driven-side engaging portion 21 and the driving-side engaging portion 23.

[0134] As shown in Figure 6, the drive assembly also includes a developing gear 39 and a powder feeding gear 38. The end of the developing roller shaft 25j of the developing roller 25 is provided with the developing gear 39 as the upstream transmission member (first driving force transmission unit). The end of the powder feeding roller shaft 34j of the powder feeding roller 34 is provided with the powder feeding gear 38, which is the downstream transmission member (second driving force transmission unit). The developing gear 39 is configured to be able to directly mesh with the powder feeding gear 38. In this embodiment, the gear train such as the developing gear 39 and the powder feeding gear 38 is arranged on the side (non-driving end 112) opposite to the driving force input part (developing coupling 20) of the developing unit 4 with respect to the axial direction. Optionally, the gear train and the driving force input part can also be arranged on the same side. In this embodiment, the rotation directions of the developing roller 25 and the powder feeding roller 34 are opposite to each other, and therefore, there is no need to provide an idler gear between the powder feeding gear 38 and the developing gear 39, thereby reducing the number of components. The first driving force transmission portion and the second driving force transmission portion are engaged with each other to transmit the driving force input to the shaft of the developing roller 25 from the developing gear 39 to the powder feeding roller 34 via the powder feeding gear 38 .

[0135] Optionally, the developing coupling 20 (driving force receiving portion) can also be arranged at the end of the powder feeding roller 34, that is, the driven side coupling portion 21 is fixed and mounted to the driving end 111 of the powder feeding roller 34, then the powder feeding gear 38 arranged at the non-driving end 112 of the powder feeding roller 34 serves as an upstream transmission component (second driving force transmission portion), and the developing gear 39 arranged at the non-driving end 112 of the developing roller 25 serves as a downstream transmission component (first driving force transmission portion) and is driven by the powder feeding roller 34 (directly driven by the powder feeding gear 38 or indirectly driven by the idle gear).

[0136] As shown in Figure 7, the drive assembly further includes a first transmission wheel 80, a second transmission wheel 81, and a stirring gear 82. These first transmission wheel 80, the second transmission wheel 81, and the stirring gear 82 engage in sequence on the downstream side of the developing gear 39 to transmit drive to the developer supply member 36. The first transmission wheel 80 and the second transmission wheel 81 are rotatably supported by the front developing bearing 12, and the stirring gear 82 is connected to the non-driven end of the developer supply member 36 via unillustrated connecting components (such as snap-fit ​​components and engaging portions). The stirring gear 82 is rotatably supported by the developing frame 31. The driving force input to the shaft of the developing roller 25 is transmitted in the order of the developing gear 39, the powder feeding gear 38, the first transmission wheel 80, the second transmission wheel 81, and the stirring gear 82, and is ultimately transmitted to the developer supply member 36.

[0137] In some possible implementations, the developing gear 39 and the powder feeding gear 38 can also be replaced by a transmission belt, one end of the transmission belt is sleeved on the developing roller 25, and the other end is sleeved on the powder feeding roller 34. As long as the driving force between the developing gear 39 and the powder feeding gear 38 can be transmitted, the specific implementation method is not limited.

[0138] In this embodiment, the development roller 25 and the powder feed roller 34 rotate in opposite directions, and the peripheral speed of the powder feed roller 34 is set to be equal to or less than the peripheral speed of the development roller 25. Specifically, the diameter of the development roller 25 can be set relatively large. In this embodiment, the diameter of the development roller 25 is set to 13.3 mm and the diameter of the powder feed roller 34 is set to 12 mm, resulting in a diameter ratio of approximately 1.11, making the peripheral speed of the powder feed roller 34 less than that of the development roller 25. Alternatively, the diameter of the development roller 25 need not be larger than that of the powder feed roller 34, and a desired peripheral speed difference can be determined by a gear ratio. Specifically, regarding the number of teeth of the powder feeding gear 38 and the developing gear 39 that are directly connected to each other, the number of teeth of the powder feeding gear 38 can be set to be greater than the number of teeth of the developing gear 39. For example, the number of teeth of the powder feeding gear 38 (second driving force transmission part) is set to 26 teeth, and the number of teeth of the developing gear 39 (first driving force transmission part) is set to 18 teeth, so that the gear ratio between them is approximately 1.44.

[0139] In this embodiment, the surface speed of the powder feed roller 34 is set to approximately 304 mm / s and the surface speed of the developing roller 25 is set to approximately 487 mm / s by the above-mentioned diameter ratio and / or gear ratio, so that the peripheral speed ratio therebetween is approximately 1.60. Incidentally, the surface speed referred to here is the speed of the portion of the surface other than the contact portion between the developing roller 25 and the powder feed roller 34, and this also applies similarly to the peripheral speed ratio.

[0140] In some possible embodiments, the developing roller 25 and the powder feeding roller 34 may also rotate in the same direction. As shown in FIG8 , a gap G exists between the powder feeding gear 38 and the developing gear 39, preventing them from directly meshing. Specifically, the developing gear 39 directly meshes with the first transmission wheel 80, which then meshes with the powder feeding gear 38 to transmit the driving force to the powder feeding gear 38. This allows the developing roller 25 and the powder feeding roller 34 to rotate in the same direction, thereby reducing surface friction between the developing roller 25 and the powder feeding roller 34 and improving print quality.

[0141] In other embodiments, a transmission gear (not shown) may be added between the developing roller 25 and the powder feeding roller 34. The transmission is not limited to the first transmission wheel 80. As long as the rotation directions of the developing roller 25 and the powder feeding roller 34 are the same, the specific gear setting method is not limited.

[0142] Example 2

[0143] As shown in FIG9 , this embodiment provides another processing box, which is different from the first embodiment in that the structure of the driving assembly is different.

[0144] As shown in Figures 9 and 10, the drive assembly includes a developing coupling 20, a first transmission pulley 80a, a second transmission pulley 81a, a transmission belt 83, a pressing pulley 84, a powder feeding gear 38, a stirring gear 82, and an intermediate transmission gear 30. The developing coupling 20 is disposed at the driving end 111 of the developing frame 31 and is used to receive driving force from the electronic imaging device. The developing coupling 20 is fixedly mounted on one end of the powder feeding roller 34 near the driving end 111 to transmit driving force to the powder feeding roller 34.

[0145] As shown in Figure 10, the first transmission wheel 80a, the second transmission wheel 81a, the transmission belt 83, the pressing wheel 84, the powder feeding gear 38, the stirring gear 82, and the intermediate transmission gear 30 are arranged at the non-driven end 112 of the developing frame 31. The powder feeding gear 38 is fixed to the end of the powder feeding roller 34 near the non-driven end 112 and rotates with the powder feeding roller 34. The first transmission wheel 80a has a gear portion and a mounting portion for mounting the transmission belt 83. The gear portion of the first transmission wheel 80a meshes with the powder feeding gear 38 to receive driving force, and the mounting portion of the first transmission wheel 80a is mounted with the transmission belt 83 and is connected to the second transmission wheel 81a via the transmission belt 83. The gear portion and the mounting portion of the first transmission wheel 80a are coaxially arranged, with the gear portion being closer to the driving end 111 than the mounting portion. The second transmission wheel 81a is fixed to the end of the developing roller 25 near the non-driven end 112. It receives the driving force of the first transmission wheel 80a through the transmission belt 83 and drives the developing roller 25 to rotate. The pressing wheel 84 is disposed between the first transmission wheel 80 a and the second transmission wheel 81 a and is used to press the transmission belt 83 to tighten the transmission belt 83 , thereby making the transmission of driving force more stable and durable.

[0146] Optionally, the developing coupling 20 can also be set at the driving end 111 of the developing roller 25 to transmit the driving force to the developing roller 25. The non-driving end 111 of the developing roller 25 is provided with a developing gear, the first transmission wheel is engaged with the developing gear to receive the driving force, and the second transmission wheel is fixedly set at the non-driving end 112 of the powder feeding roller 34, receives the driving force of the first transmission wheel through the transmission belt and drives the powder feeding roller 34 to rotate.

[0147] As shown in Figure 10, the stirring gear 82 is fixedly mounted on one end of the developer supply member near the non-driven end 112 and is used to drive the developer supply member in rotation. At least one intermediate transmission gear 30 is provided, and in this embodiment, only one is provided. The gear portion of the first transmission wheel 80a, the intermediate transmission gear 30, and the stirring gear 82 mesh in sequence, thereby driving the developer supply member in rotation. The intermediate transmission gear 30 is a two-stage gear, with its large-diameter gear 301 meshing with the gear portion of the first transmission wheel 80a and its small-diameter gear 302 meshing with the stirring gear 82.

[0148] In other embodiments, the first transmission wheel 80a can also obtain driving force from other gears or structures other than the powder feeding gear 38; one or more of the gears or transmission wheels of the drive assembly can also be set at the driving end 111 instead of the non-driving end 112; the stirring gear 82 can obtain driving force from other gears or structures other than the first transmission wheel 80a.

[0149] 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 here.

[0150] Example 3

[0151] As shown in Figures 11 and 12, the main difference between this embodiment and Example 2 is that this embodiment does not provide a transmission wheel and a transmission belt 83, the developing coupling 20 only transmits the driving force to the powder feeding roller 34 and the developing roller 25, and the developer supply component is driven by the drum connecting member 16.

[0152] As shown in Figures 11 and 12, the drive assembly of the developing unit 4 of this embodiment specifically includes: a developing coupling 20, a powder feed gear 38, a developing gear 39, a stirring gear 82, and an intermediate transmission gear. The developing coupling 20 is disposed at the drive end 111 of the developing frame 31 to receive driving force from the electronic imaging device. The developing coupling 20 is fixedly mounted on the end of the powder feed roller 34 near the drive end 111 to transmit driving force to the powder feed roller 34. The powder feed gear 38, the developing gear 39, and the stirring gear 82 are respectively fixedly mounted on the powder feed roller 34, the developing roller 25, and the end of the developer supply member near the non-driving end 112. The developing gear 39 meshes with the powder feed gear 38, and the driving force is transmitted to the developing roller 25 through the developing coupling 20, the powder feed roller 34, the powder feed gear 38, and the developing gear 39 in sequence.

[0153] As shown in Figure 12, multiple intermediate transmission gears can be provided. In this embodiment, two are provided, including a second intermediate gear 85 and a third intermediate gear 86. The drum unit 26 is also provided with a photosensitive gear 44 and a first intermediate gear 42. The photosensitive gear 44 is fixedly mounted on the end of the photosensitive drum 1 near the non-driven end 112. The driving force is transmitted to the photosensitive gear 44 via the drum coupling 16 and the photosensitive drum 1. The first intermediate gear 42 is mounted on the non-driven end 112 of the drum frame 27. In some embodiments, if the location permits, the first intermediate gear 42 can also be mounted on the developer unit 4. The photosensitive gear 44, the first intermediate gear 42, the second intermediate gear 85, the third intermediate gear 86, and the stirring gear 82 are sequentially engaged, thereby driving the developer supply member to rotate.

[0154] It should be noted that, at the separation position where the photosensitive drum 1 and the developing roller 25 are separated, the first intermediate gear 42 of the drum unit 26 and the second intermediate gear 85 of the developing unit 4 are always in meshing engagement.

[0155] 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 here.

[0156] Example 4

[0157] As shown in Figures 13 and 14, the main difference between this embodiment and Example 3 is that the processing box of this embodiment adopts a single-drive scheme, the developing coupling 20 is eliminated, and only the drum connecting part 16 is provided. The developing roller 25 and other rotating components on the developing unit 4 are all driven by the drum connecting part 16.

[0158] As shown in Figure 14 , the drive assembly of the developer unit 4 in this embodiment specifically includes a powder feed gear 38, a developing gear 39, a stirring gear 82, and an intermediate transmission gear. The powder feed gear 38, developing gear 39, and stirring gear 82 are fixedly mounted to the powder feed roller 34, the developing roller 25, and the end of the developer supply member near the non-driven end 112, respectively. Multiple intermediate transmission gears may be provided; in this embodiment, three are provided: a second intermediate gear 85, a third intermediate gear 86, and a fourth intermediate gear 87.

[0159] As shown in Figure 14, the drum unit 26 is further provided with a photosensitive gear 44 and a first intermediate gear 42. The photosensitive gear 44 is fixedly mounted on the end of the photosensitive drum 1 near the non-driven end 112. The driving force is transmitted to the photosensitive gear 44 via the drum coupling 16 and the photosensitive drum 1. The first intermediate gear 42 is mounted on the non-driven end 112 of the drum frame 27. In some embodiments, if the location permits, the first intermediate gear 42 may also be mounted on the developing unit 4.

[0160] As shown in Figure 14 , the photosensitive gear 44, the first intermediate gear 42, the second intermediate gear 85, the third intermediate gear 86, and the stirring gear 82 are sequentially meshed, thereby driving the developer supply member to rotate. Simultaneously, the photosensitive gear 44, the first intermediate gear 42, the second intermediate gear 85, the third intermediate gear 86, the fourth intermediate gear 87, the developing gear 39, and the powder feed gear 38 are sequentially meshed, thereby driving the developing roller 25 and the powder feed roller 34 to rotate. In some embodiments, the third intermediate gear 86, the powder feed gear 38, and the developing gear 39 may also be meshed sequentially.

[0161] In some embodiments, the fourth intermediate gear 87 may not be provided, and the developing gear 39 directly engages with the photosensitive gear 44 to receive the driving force to drive the developing roller 25 and the powder feeding roller 34 to rotate.

[0162] In some embodiments, the first intermediate gear 42 and the second intermediate gear 85 may not be provided, and the driving force is transmitted to the developing unit 4 through the engagement of the developing gear 39 and the photosensitive gear 44, that is, the photosensitive gear 44, the developing gear 39 and the powder feeding gear 38 are engaged in sequence to drive the developing roller 25 and the powder feeding roller 34 to rotate; the photosensitive gear 44, the developing gear 39, the fourth intermediate gear 87, the third intermediate gear 86 and the stirring gear 82 are engaged in sequence to drive the developer supply component to rotate.

[0163] 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 here.

[0164] Example 5

[0165] During operation, the process cartridge needs to supply developer to the developing roller 25. This developer is supplied by the powder feed roller 34. Referring to Figures 1-2 , the process cartridge is provided with a developer storage chamber 31c. A developer supply member 36 (a stirring frame) is provided within the developer storage chamber 31c. The rotation of the developer supply member 36 drives the developer upward through an opening 31e in a partition wall 31d on the developing frame, and into the developing chamber 31b where the powder feed roller 34 and the developing roller 25 are located, thereby supplying the developer. Since the developer supply member 36 stirs the developer upward by rotation and enters the developing chamber 31b, and the position of the developer supply member 36 in the developer holding chamber 31c is fixed, the developer supply member 36 can only stir the developer located near it. When a lot of developer has been used, that is, there is not much left, the remaining developer is deposited at the bottom of the developer holding chamber 31c, and the developer supply member 36 cannot stir the developer at the bottom. Even if it can be stirred, the developer may not be able to rise to the height of the opening 31e under the stirring of the developer supply member 36. Therefore, it is difficult to send all the developer from the developer holding chamber 31c into the developing chamber 31b located above it by only stirring the developer supply member 36 at a specific position, resulting in the developer deposited at the bottom of the developer holding chamber 31c not being fully utilized.

[0166] This embodiment provides a process cartridge that is removably installed in an electronic imaging device. For ease of understanding, a three-dimensional coordinate system is established, as shown in Figure 17, with the length of the process cartridge as the X direction, the width of the process cartridge as the Y direction, and the height of the process cartridge as the Z direction, with the X, Y, and Z directions intersecting in pairs. This embodiment differs from the first embodiment in the structure of the developer supply member.

[0167] As shown in Figures 18 and 19, the developer supply assembly is used to transport the developer in the developer accommodating chamber 31c to the developing chamber 31b. The developer supply assembly includes an air pump 51, a first rotating member 52, and a power receiving member 53. The air pump 51 is used to transport the developer in the developer accommodating chamber 31c to the developing chamber 31b, enabling the powder feed roller 34 to supply the developer to the developing roller 25. Because the air pump 51 applies air pressure to the developer accommodating chamber 31c, it can exert force on the developer distributed throughout the developer accommodating chamber 31c. Compared to the conventional method of stirring the developer supply assembly 36 at a localized location, the air pump 51 can more effectively lift the developer deposited at the bottom of the developer accommodating chamber 31c and smoothly transport it into the developing chamber 31b located above the developer accommodating chamber 31c, thereby fully utilizing the developer.

[0168] In this embodiment, the air pump 51 blows and inhales the developer holding chamber 31c specifically through the reciprocating motion of compression and extension, thereby delivering the developer to the powder feeding roller 34. Preferably, the air pump 51 is an air bag, which is a soft structure that can perform reciprocating motion through compression and extension to achieve suction and blowing. Furthermore, the air pump 51 adopts an elastic air bag, which can automatically reset by its own elastic force after compression or extension. Specifically, since the elastic air bag is elastic, it can move and store force under the action of external force, and automatically reset when the external force disappears or weakens, thereby achieving reciprocating motion. In other embodiments, the air pump 51 can also adopt other structures and move in a non-reciprocating manner, such as achieving developer delivery by rotating blowing.

[0169] As shown in Figures 17 to 20, the first rotating member 52 converts the rotational driving force into linear motion in its axial direction (X direction), thereby driving the air pump 51 to move in this linear direction to achieve blowing or suction. Specifically, the first rotating member 52 is disposed at one end of the air pump 51, and the first rotating member 52 is disposed further away from the developer storage chamber 31c relative to the air pump 51. A force-bearing protrusion 521 is provided on the end surface of the first rotating member 52. When the first rotating member 52 receives the driving force and rotates, the force-bearing protrusion 521 is acted upon by an external force, causing the first rotating member 52 to move in the axial direction, thereby driving the air pump 51 to move to achieve blowing or suction. Specifically, the first rotating member 52 is arranged on the side wall of the developing frame 31 close to the non-driving end 112 of the processing box and facing the developing end cover 43 of the non-driving end 112. The developing end cover 43 is provided with a matching hole 43b. The force-bearing protrusion 521 on the first rotating member 52 has a spiral inclined surface. In the initial state, the force-bearing protrusion 521 of the first rotating member 52 extends from the matching hole 43b. When the force-bearing protrusion 521 rotates, the force-bearing protrusion 521 abuts against the inner wall of the developing end cover 43. Under the action of the inclined surface, the force-bearing protrusion 521 gradually leaves the matching hole 43b and retracts from the matching hole 43b, thereby compressing the air pump 51, and the air pump 51 blows air; when the force-bearing protrusion 521 continues to rotate to the matching hole 43b, the force-bearing protrusion 521 extends from the matching hole 43b under the elastic force of the air pump 51, and the air pump 51 inhales air. As the first rotating member 52 rotates continuously, the air pump 51 extends and retracts in the direction of the rotation axis of the first rotating member 52, performing a reciprocating motion to achieve blowing and inhaling. In other embodiments, the air pump 51 may be configured to blow air when the force-bearing protrusion 521 extends, and to inhale air when the force-bearing protrusion 521 retracts. That is, the corresponding relationship between the extension and contraction of the first rotating member 52 and the inhalation and blowing of the air pump 51 is reversed. In this case, the positional relationship between the air pump 51 and the first rotating member 52 relative to the developer holding chamber 31c is reversed, that is, the air pump 51 is positioned further away from the developer holding chamber 31c relative to the first rotating member 52.

[0170] In other embodiments, the air pump 51 may also adopt a non-elastic structure, such as a non-elastic airbag, or instead of an airbag, adopt a hard structure, such as a hard piston structure, to perform reciprocating motion to achieve blowing and suction. In this way, the air pump 51 will not automatically reset under its own elastic force, and an additional mechanism (such as the addition of an elastic part) is required to achieve the reset of the air pump 51 to perform reciprocating motion.

[0171] In this embodiment, the first rotating member 52 is provided to cooperate with the developing end cover 43 to convert the rotational motion into axial motion, thereby realizing the linear motion of the air pump 51. In other embodiments, the air pump 51 can also be driven to move in other ways to realize linear motion.

[0172] Furthermore, in this embodiment, the reciprocating direction of the first rotating member 52 and the air pump 51 is set to the X direction, that is, parallel to the axial direction of the developing roller 25. As shown in Figures 15 and 16, in the prior art, since the developer supply member 36 generates centrifugal force when rotating, the direction of the centrifugal force is perpendicular to the X direction, that is, the radial direction of the developing roller 25 and the powder feeding roller 34. The centrifugal force is transmitted to the front developing bearing 12 supporting the developing roller 25 through the developing frame 31 supporting the developer supply member 36, causing the developing roller 25 to vibrate in the radial direction. Since the developing roller 25 needs to contact the photosensitive drum 1 during operation (the outer circumferential surfaces of the developing roller 25 contact each other), the radial vibration of the developing roller 25 causes the distance between the developing roller 25 and the photosensitive drum 1 to change. In particular, when the dimensional tolerances of the sleeves 251 at both ends of the developing roller 25 are inconsistent, the contact interference between the developing roller 25 and the photosensitive drum 1 may be uneven, ultimately resulting in abnormalities such as uneven color density and whitening of the manuscript surface. In this embodiment, since the direction of the reciprocating motion of the first rotating member 52 and the air pump 51 is set to the X direction, that is, parallel to the axial direction of the developing roller 25, the force generated by this motion direction is roughly along the X direction, and it does not generate a force in the radial direction (that is, the direction perpendicular to the X direction) of the developing roller 25 and the powder feeding roller 34, or the radial force generated is relatively small, which has little impact on the contact and engagement of the developing roller 25 and the photosensitive drum 1 in the radial direction. It can solve the problem that the distance between the developing roller 25 and the photosensitive drum 1 changes and the contact interference between the developing roller 25 and the photosensitive drum 1 is uneven when the dimensional tolerances of the sheaths 251 at both ends of the developing roller 25 are inconsistent, thereby improving the development quality.

[0173] In this embodiment, the power source of the first rotating member 52 is the rotational driving force output by the electronic imaging device. Specifically, the first rotating member 52 is configured to directly or indirectly receive the driving force of the developing coupling through a power receiving member 53. The power receiving member 53 is coaxially arranged with the air pump 51 and the first rotating member 52. The first rotating member 52 is fixed to the power receiving member 53 in the rotational direction, that is, the two rotate in synchronization with each other. In the axial direction, the first rotating member 52 can slide relative to the power receiving member 53. Specifically, as shown in Figure 19, the power receiving member 53 is a cylindrical structure with a hollow interior. The air pump 51 and the first rotating member 52 are disposed within the power receiving member 53. The inner wall of the power receiving member 53 is provided with a first guide portion 531, which is specifically a strip-shaped groove along the axial direction. The first rotating member 52 is provided with a second guide portion 522, which is specifically a strip-shaped protrusion along the axial direction provided on the outer circumference of the first rotating member 52. The second guide portion 522 is embedded in the first guide portion 531 and can slide axially. The first rotating member 52 reciprocates axially within the power receiving member 53 through the cooperation of the first guide portion 531 and the second guide portion 522. In other embodiments, the protrusion and the groove can also be reversed, or a structure other than the protrusion and the groove can be used to achieve relative sliding. The outer wall of the power receiving member 53 is provided with a power receiving gear 532, which is used to directly or indirectly obtain driving force from the developing coupling. In this embodiment, the power receiving gear 532 is engaged with the second transmission wheel 81 to receive the driving force.

[0174] As shown in FIG17 , the developing unit 4 in this embodiment preferably further includes a powder supply passage 37 . The powder supply passage 37 is disposed within the developer accommodating chamber 31 c and is connected to the air pump 51 , thereby delivering developer to the powder feed roller 34 through the air pressure of the air pump 51 . Specifically, the powder supply passage 37 connects the air pump 51 and the developing chamber 31 b . The powder supply passage 37 is provided with a plurality of powder supply holes 373 . When the air pump 51 draws air, the developer enters the powder supply passage 37 through the powder supply holes 373 . When the air pump 51 blows air, the developer in the powder supply passage 37 is blown out into the developing chamber 31 b .

[0175] In this embodiment, the powder supply channel 37 includes a first channel 371 and a second channel 372. The first channel 371 is located at the bottom of the developer holding chamber 31c to facilitate the absorption of developer at the bottom of the developer holding chamber 31c, thereby ensuring that the developer at the bottom can also be fully utilized. One end of the first channel 371 is connected to the air pump 51. The first channel 371 is provided with a powder supply hole 373. When the air pump 51 draws air, the developer is drawn from the developer holding chamber 31c into the first channel 371 through the powder supply hole 373. In this embodiment, as shown in FIG19 , the powder supply channel 37 also includes a connecting tube 374, which is a flexible hose. The connection between the first channel 371 and the air pump 51 is achieved through the connecting tube 374, allowing the first channel 371 to be positioned as close to the bottom of the developer holding chamber 31c as possible. The second channel 372 connects the developing chamber 31b and the first channel 371. One end of the second channel 372 connects to the opening 31e in the partition wall 31d, and the other end connects to the first channel 371, thereby guiding the developer to the developing chamber 31b. Preferably, the first channel 371 is arranged parallel to the axial direction of the developing roller 25 so as to cover the entire length of the developer holding chamber 31c as much as possible. The second channel 372 is arranged perpendicular to the axial direction of the developing roller 25 so as to quickly deliver the developer to the developing chamber 31b over a short linear distance. One or more first channels 371 and two second channels 372 may be provided. In this embodiment, one first channel 371 and four second channels 372 are provided. In other embodiments, the first channel 371 and the second channel 372 may be curved or have other shapes rather than straight lines.

[0176] In this embodiment, an air pump 51 is provided to act on the developer holding chamber 31c by air pressure, so that a force can be applied to the developer distributed in various parts of the developer holding chamber 31c. Compared with the method of stirring the developer supply member 36 at a local position in the prior art, the air pump 51 can more effectively drive the developer deposited at the bottom of the developer holding chamber 31c to move, smoothly deliver the developer into the developing chamber 31b, and make full use of the developer.

[0177] 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 here.

[0178] Example 6

[0179] This embodiment provides another processing box, which is different from the fifth embodiment in that the structure of the developer supply component is different.

[0180] In this embodiment, as shown in Figures 21 and 22, the developer supply member includes a second rotating member 61, a stirring frame 62, and an elastic member 63. The second rotating member 61 is rotatably disposed, and the stirring frame 62 is movably disposed within the developer accommodating chamber 31c. When the second rotating member 61 rotates, it can act on the stirring frame 62, causing the stirring frame 62 to be displaced in the height direction of the process cartridge, thereby achieving stirring.

[0181] Specifically, as shown in Figures 21 and 22, the second rotating member 61 includes a rotating rod 611 and an actuating protrusion 612. The rotating rod 611 is rotatably disposed within the developer holding chamber 31c and is driven to rotate by the stirring gear 82. The actuating protrusion 612 is fixed to the rotating rod 611 so as to rotate with the rotating rod 611. When the rotating rod 611 rotates, the actuating protrusion 612 can act on the stirring frame 62, causing the stirring frame 62 to displace in the height direction (Z direction) of the process cartridge, thereby achieving stirring. The displacement in the height direction can include displacement in the height direction or displacement in a direction oblique to the height direction. As long as a partial displacement in the height direction is generated, so that the stirring frame 62 can move the developer upward into the developing chamber 31b, it is sufficient. In this embodiment, two groups of action protrusions 612 are provided, one at each end of the lengthwise direction (X-direction) of the rotating rod 611. Each group of action protrusions 612 includes two action protrusions 612, which are symmetrically arranged along the circumference of the rotating rod 611. In other embodiments, each group of action protrusions 612 may include one or more action protrusions 612. The action protrusions 612 may be provided in one or more groups. When two or more groups are provided, they may be evenly or unevenly arranged along the lengthwise direction of the rotating rod 611. In this embodiment, the action protrusions 612 are hook-shaped with a curved outer surface. In other embodiments, they may have other shapes, such as a cam-shaped outer surface with a continuously curved surface.

[0182] As shown in Figure 21, the elastic member 63 is used to reset the stirring frame 62 when it is separated from the action protrusion 612. In this embodiment, the second rotating member 61 is disposed above the stirring frame 62, and the elastic member 63 is connected between the stirring frame 62 and the rotating rod 611. The elastic member 63 can be a tension spring. When the action protrusion 612 rotates to abut against the stirring frame 62, the action protrusion 612 can press the stirring frame 62 downward under the action of the curved surface, and the elastic member 63 is stretched and deformed. When the action protrusion 612 rotates to separate from the stirring frame 62, the stirring frame 62 is reset upward under the action of the elastic member 63 to restore its deformation, and the stirring frame 62 reciprocates up and down, thereby stirring the developer to prevent the developer from clumping and transporting the developer in the developer accommodating chamber 31c to the developing chamber 31b. In other embodiments, the stirring frame 62 may be positioned above and the rotating rod 611 may be positioned below. When the actuating protrusion 612 rotates until it contacts the stirring frame 62, it pushes the stirring frame 62 upward. When the actuating protrusion 612 rotates until it is disengaged from the stirring frame 62, the stirring frame 62 returns downward under the action of the elastic member 63. The elastic member 63 may also be connected between the stirring frame 62 and the inner wall of the developer accommodating chamber 31 c.

[0183] In the prior art, since the stirring frame 62 is configured to perform rotary stirring, the blades 622 are typically configured to be relatively wide to prevent toner (developer) from being deposited at the bottom of the developer holding chamber 31c when a small amount of toner (developer) is present and cannot be stirred. However, this configuration increases the weight of the stirring frame 62, thereby requiring excessive torque, which ultimately results in poor stirring and feeding performance of the stirring frame 62. In this embodiment, the stirring frame 62 does not utilize rotary stirring, but rather an up-and-down stirring method. This allows the stirring frame 62 to better stir the toner at the bottom of the developer holding chamber 31c, and achieves a better stirring and feeding performance without increasing the width of the blades 622 of the stirring frame 62.

[0184] As shown in Figures 21 and 22, the stirring frame 62 includes a rod 621 and a blade 622 fixed to the rod 621. Guide holes 31f are respectively provided on the two side walls of the developer storage chamber 31c. The guide holes 31f extend in the height direction of the process cartridge. The ends of the rod 621 are movably disposed within the guide holes 31f, thereby guiding and limiting the movement direction of the rod 621. In other embodiments, the elastic member 63 may also be disposed between the ends of the rod 621 of the stirring frame 62 and the guide holes 31f, as long as the stirring frame 62 can be moved and then reset, thereby achieving up and down reciprocating movement.

[0185] In this embodiment, the stirring frame 62 is changed from rotating to moving in the height direction, so that even if the blades 622 of the stirring frame 62 are set to a narrower size, the developer at the bottom of the developer accommodating chamber 31c can be stirred, and the powder feeding effect is better.

[0186] 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 here.

[0187] Example 7

[0188] As shown in Figures 23 to 25, the difference between this embodiment and the aforementioned embodiment is that this embodiment does not improve the developer supply component in the prior art, but improves the arrangement of the powder feeding roller 34, the developer accommodating chamber 31c and the developing chamber 31b, so that the stirring frame 62 can more easily deliver the developer to the powder feeding roller 34.

[0189] In the prior art (see the relevant structures of Figures 1, 21, and 22), the powder feeding roller 34 is arranged in the developing chamber 31b, and the partition wall 31d in the developing frame 31 for separating the developer accommodating chamber 31c and the developing chamber 31b is arranged obliquely below the powder feeding roller 34. The developer enters the developing chamber 31b through the opening 13e in the partition wall 31d and thus contacts the powder feeding roller 34.

[0190] As shown in Figures 23 to 25 , in this embodiment, the partition wall 31d separating the developer chamber 31c from the developing chamber 31b is not positioned obliquely below the powder feed roller 34, but rather between the powder feed roller 34 and the developing roller 25. This allows the powder feed roller 34 to be positioned not entirely within the developing chamber 31b, but rather partially within the developer chamber 31c and partially within the developing chamber 31b. The side of the powder feed roller 34 within the developer chamber 31c is unobstructed, meaning it is closer to the developer chamber 31c than in the prior art, allowing it to more easily retrieve developer from the developer chamber 31c (see the small arrow below the powder feed roller 34 in Figure 23 ). The other side of the powder feed roller 34 within the developing chamber 31b remains in contact with the developing roller 25, feeding powder to the developing roller 25. The ratio of the area of ​​the powder feed roller 34 exposed to the developer chamber 31c and the developing chamber 31b, respectively, can be designed as desired by the placement of the partition wall 31d. In some embodiments, the powder feeding roller 34 can also be set to be located only in the developer holding chamber 31c, that is, the powder feeding roller 34 is entirely located in the developer holding chamber 31c, and the partition wall 31d can be set just between the powder feeding roller 34 and the developing roller 25, or it can be set on the developing roller 25. At this time, the powder feeding roller 34 is completely located in the developer holding chamber 31c, and the developing roller 25 is partially located in the developer holding chamber 31c and partially located in the developing chamber 31b.

[0191] As shown in Figure 24 , the partition wall 31d can be a barrier structure, either integrally formed with the developing frame 31 or separately secured to the developing frame 31 by gluing, welding, or snapping. The partition wall 31d has an opening 13e extending along the length of the process cartridge. The cylindrical portion of the powder feed roller 34, which contacts the developing roller 25 along its length, is positioned within the opening 13e to allow contact with the developing roller 25. A gap exists between the opening 13e and the powder feed roller 34, allowing the roller 34 to rotate and deliver powder normally. The barrier effect of the partition wall 31d prevents excess developer from entering the developing chamber 31b and leaking out.

[0192] The developer supply component of this embodiment can adopt the existing developer supply component (such as the stirring frame of embodiment 1), or can adopt the developer supply component of embodiment 5 or embodiment 6 or developer supply component of other structures to further improve the powder feeding effect.

[0193] The processing box of this embodiment sets one side of the powder feeding roller 34 in the developer holding chamber 31c, so that the powder feeding roller 34 is closer to the developer holding chamber 31c, which can more easily obtain the developer from the developer holding chamber 31c, thereby improving the powder feeding effect.

[0194] 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 here.

[0195] 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 fall within the scope of protection of the present invention.

Claims

1. A process cartridge detachably mounted in an electronic imaging device, the process cartridge having a drive end and a non-drive end in a longitudinal direction, the process cartridge comprising: a photosensitive drum on which an electrostatic latent image can be formed; a developer containing chamber, containing developer therein; a rotatable developing roller, wherein the axial direction of the developing roller extends along the length direction, and the developing roller is configured to transport developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum; a rotatable powder feeding roller, wherein the axial direction of the powder feeding roller extends along the length direction, and the powder feeding roller contacts the developing roller to supply the developer to the developing roller; a developing chamber, wherein the developing roller is located in the developing chamber, and when the process cartridge is mounted on the electronic imaging device, the developing chamber is located above the developer containing chamber; A developing coupling receives a driving force to rotate the developing roller and the powder feeding roller; It is characterized in that when the developing roller and the powder feeding roller are driven to rotate, the circumferential speed of the surface of the powder feeding roller is less than or equal to the circumferential speed of the surface of the developing roller.

2. The process cartridge according to claim 1, wherein The developing coupling is provided at the driving end of the developing roller or the powder feeding roller; The non-driving end of the developing roller is provided with a developing gear; The non-driving end of the powder feeding roller is provided with a powder feeding gear; The developing gear is engaged with the powder feeding gear to transmit the driving force from the developing roller to the powder feeding roller or from the powder feeding roller to the developing roller.

3. The process cartridge according to claim 2, wherein: The number of teeth of the powder feeding gear is greater than the number of teeth of the developing gear.

4. The process cartridge according to claim 1, wherein The diameter of the developing roller is greater than the diameter of the powder feeding roller.

5. A process cartridge detachably mounted in an electronic imaging device, the process cartridge having a drive end and a non-drive end in a longitudinal direction, the process cartridge comprising: a photosensitive drum on which an electrostatic latent image can be formed; a developer containing chamber, containing developer therein; a rotatable developing roller, wherein the axial direction of the developing roller extends along the length direction, and the developing roller is configured to transport developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum; a rotatable powder feeding roller, wherein the axial direction of the powder feeding roller extends along the length direction, and the powder feeding roller contacts the developing roller to supply the developer to the developing roller; a developing chamber, wherein the developing roller is located in the developing chamber, and when the process cartridge is mounted on the electronic imaging device, the developing chamber is located above the developer containing chamber; A developing coupling is provided at the driving end of the powder feeding roller and receives driving force to drive the powder feeding roller to rotate; A powder feeding gear is provided at the non-driving end of the powder feeding roller; It is characterized by further comprising: a first transmission wheel, meshing with the powder feeding gear to receive driving force; a second transmission wheel, fixedly arranged at the end of the developing roller; A transmission belt is connected to the first transmission wheel and the second transmission wheel to transmit the driving force from the powder feeding roller to the developing roller.

6. A process cartridge detachably mounted in an electronic imaging device, the process cartridge having a drive end and a non-drive end in a longitudinal direction, the process cartridge comprising: a photosensitive drum on which an electrostatic latent image can be formed; a developer containing chamber, containing developer therein; a rotatable developing roller, wherein the axial direction of the developing roller extends along the length direction, and the developing roller is configured to transport developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum; a rotatable powder feeding roller, wherein the axial direction of the powder feeding roller extends along the length direction, and the powder feeding roller contacts the developing roller to supply the developer to the developing roller; a developing chamber, wherein the developing roller is located in the developing chamber, and when the process cartridge is mounted on the electronic imaging device, the developing chamber is located above the developer containing chamber; A developing coupling is provided at the driving end of the developing roller and receives driving force to drive the developing roller to rotate; a developing gear, disposed at a non-driving end of the developing roller; It is characterized by further comprising: a first transmission wheel meshing with the developing gear to receive a driving force; a second transmission wheel, fixedly arranged at the end of the powder feeding roller; A transmission belt is connected to the first transmission wheel and the second transmission wheel to transmit the driving force from the developing roller to the powder feeding roller.

7. The process cartridge according to claim 5 or 6, wherein: It also includes a pressing wheel for pressing the transmission belt to tighten the transmission belt.

8. The process cartridge according to claim 7, wherein: The first transmission wheel includes a gear portion and a mounting portion, the gear portion is engaged with the powder feeding gear or the developing gear, and the mounting portion is used to mount the transmission belt.

9. The process cartridge according to claim 8, wherein A developer supply member is provided in the developer accommodating chamber, and a stirring gear is provided at a non-driving end of the developer supply member; The stirring gear is directly or indirectly engaged with the first transmission wheel to receive driving force.

10. The process cartridge according to claim 9, wherein It also includes at least one intermediate transmission gear, which is arranged between the first transmission wheel and the stirring gear.

11. A process cartridge detachably mounted in an electronic imaging device, the process cartridge having a drive end and a non-drive end in a longitudinal direction, the process cartridge comprising: a photosensitive drum on which an electrostatic latent image can be formed; a developer containing chamber, containing developer therein; a rotatable developing roller, wherein the axial direction of the developing roller extends along the length direction, and the developing roller is configured to transport developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum; a rotatable powder feeding roller, wherein the axial direction of the powder feeding roller extends along the length direction, and the powder feeding roller contacts the developing roller to supply the developer to the developing roller; a developing chamber, wherein the developing roller is disposed in the developing chamber, and when the process cartridge is mounted on the electronic imaging device, the developing chamber is located above the developer containing chamber; It is characterized by further comprising: The developer supplying member acts on the developer accommodating chamber by air pressure to transport the developer in the developer accommodating chamber to the developing hopper.

12. The process cartridge according to claim 11, wherein The developer supplying member includes an air pump configured to blow and suck air to and from the developer accommodating chamber through a reciprocating motion of compression and expansion, thereby conveying the developer to the developing chamber.

13. The process cartridge according to claim 12, wherein: The air pump is an air bag.

14. The process cartridge according to claim 13, wherein The air pump is an elastic air bag, which can be reset by its own elastic force after being compressed or stretched.

15. The process cartridge according to claim 12, wherein: The developer supplying member further includes a first rotating member that converts a rotational driving force into a linear motion in an axial direction thereof, thereby driving the air pump to move in a linear direction to achieve air blowing or air suction.

16. The process cartridge according to claim 15, wherein The first rotating member and the air pump are configured to perform linear motion in a direction parallel to the axial direction of the developing roller.

17. The process cartridge according to claim 16, wherein: The first rotating member is provided with a force-bearing protrusion. When the first rotating member receives the driving force to rotate, the force-bearing protrusion is acted upon by an external force so that the first rotating member moves linearly along its axial direction and drives the air pump to move to achieve blowing or suction.

18. The process cartridge according to claim 17, wherein A matching hole is also provided, and the force-bearing protrusion on the first rotating part has a spiral-shaped inclined surface. When the force-bearing protrusion rotates to the matching hole, it can extend from the matching hole, and the air pump extends. When the force-bearing protrusion rotates away from the matching hole, it can retract from the matching hole under the action of the inclined surface, and the air pump compresses.

19. The process cartridge according to claim 18, wherein The developer supply member further includes a power receiving member for receiving a driving force and driving the first rotating member to rotate; The power receiving member is coaxially arranged with the air pump and the first rotating member. The first rotating member moves synchronously with the power receiving member in the rotational direction and can slide relative to the power receiving member in the axial direction.

20. The process cartridge according to claim 19, wherein It also includes a developing coupling, which is used to receive driving force from the electronic imaging device to drive the powder feeding roller and the developing roller to rotate, and the power receiving member is configured to directly or indirectly obtain driving force from the developing coupling.

21. The process cartridge according to claim 20, wherein The power receiving member is a cylindrical structure, and the first rotating member is arranged inside the power receiving member; A first guide portion is provided on the inner wall of the power receiving member, and a second guide portion is provided on the first rotating member. The first rotating member reciprocates axially in the power receiving member through the cooperation of the first and second guide portions.

22. The process cartridge according to any one of claims 12 to 21, wherein: A powder supply channel is provided in the developer accommodating chamber, and the channel is connected to the air pump so as to transport the developer to the developing chamber through the air pressure of the air pump.

23. The process cartridge according to claim 22, wherein: The powder supply channel connects the air pump and the developing chamber. A powder supply hole is provided on the powder supply channel. When the air pump inhales air, the developer enters the powder supply channel from the powder supply hole. When the air pump blows air, the developer in the powder supply channel is blown out to the developing chamber.

24. The process cartridge according to claim 23, wherein The powder supply channel includes a first channel and a second channel, the first channel is provided at the bottom of the developer receiving chamber, one end of the first channel is connected to the air pump, the first channel is provided with the powder supply hole, and the second channel connects the developing chamber and the first channel and is used to guide the developer to be transported to the developing chamber; The first passage is provided in a direction parallel to the axial direction of the developing roller, and the second passage is provided in a direction intersecting the axial direction of the developing roller.

25. A process cartridge detachably mounted in an electronic imaging device, the process cartridge having a drive end and a non-drive end in a longitudinal direction, the process cartridge comprising: a photosensitive drum on which an electrostatic latent image can be formed; a developer containing chamber, containing developer therein; a rotatable developing roller, wherein the axial direction of the developing roller extends along the length direction, and the developing roller is configured to transport developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum; a rotatable powder feeding roller, wherein the axial direction of the powder feeding roller extends along the length direction, and the powder feeding roller contacts the developing roller to supply the developer to the developing roller; a developing chamber, wherein the developing roller is disposed in the developing chamber, and when the process cartridge is mounted on the electronic imaging device, the developing chamber is located above the developer containing chamber; It is characterized by further comprising: The developer supply member is used to transport the developer in the developer accommodating chamber to the developing hopper. The developer supply member includes a stirring frame, and the stirring frame is provided to be able to reciprocate in the height direction of the process cartridge.

26. The process cartridge according to claim 25, wherein The developer supply member further includes a second rotating member, which is capable of acting on the stirring frame when the second rotating member rotates, so that the stirring frame is displaced in a height direction of the process cartridge.

27. The process cartridge according to claim 26, wherein: The second rotating member includes: a rotating rod rotatably disposed in the developer accommodating chamber; and An action protrusion is fixedly arranged on the rotating rod to rotate with the rotating rod. When the rotating rod rotates, the action protrusion can act on the stirring frame to cause the stirring frame to be displaced in the height direction of the processing box.

28. The process cartridge according to claim 27, wherein The developer supplying member further includes an elastic member connected to the stirring frame and configured to reset the stirring frame when the stirring frame is separated from the actuating protrusion.

29. The process cartridge according to claim 28, wherein The second rotating member is arranged above the stirring frame; When the action protrusion rotates to abut against the stirring frame, it presses the stirring frame to move downward, and the elastic member is deformed. When the action protrusion rotates to separate from the stirring frame, the stirring frame is reset upward under the action of the elastic member's deformation recovery.

30. The process cartridge according to any one of claims 25 to 29, wherein: The stirring frame includes a rod body and blades fixed on the rod body; Guide holes are respectively provided on both side walls of the developer accommodating chamber. The guide holes extend in the height direction of the process box, and both ends of the rod body are movably arranged in the guide holes.

31. The process cartridge according to any one of claims 26 to 29, wherein: The invention also includes a stirring gear for receiving a rotation driving force and driving the second rotating member to rotate.

32. A process cartridge according to any one of claims 1 to 6, 8 to 21, 23 to 29, characterized in that The developing chamber and the developer containing chamber are separated by a partition wall; The partition wall is located between the powder feeding roller and the developing roller, so that a portion of the powder feeding roller is located in the developer accommodating chamber and another portion is located in the developing chamber to contact the developing roller.

Images