Processing box with counting gear

Abstract

A processing box with a counting gear includes a housing, a gear end cover, a counting gear assembly, and a driving gear. The counting gear assembly includes: a gear bracket rotatably mounted on the housing end wall; a counting gear rotatably mounted on the gear bracket, the counting gear being movable outward or inward along its own axial direction; a counting gear that drives the counting gear to move between an engaged position and a disengaged position when the gear bracket rotates; a limiting slider movably mounted on the housing end wall, the top of which is exposed from the gear end cover when the limiting slider moves upward; a separating block rotatably mounted on the limiting slider, the separating block having a limiting protrusion; a bracket reset spring for moving the gear bracket from the disengaged position to the engaged position; a slider reset spring for moving the limiting slider upward; a block reset spring for moving the separating block toward the limited position; and a compression spring for axially urging the counting gear toward the housing end wall. The present invention can automatically reset the counting gear.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic imaging photography, and in particular relates to a processing box with a counting gear assembly used in an image forming device. Background Art

[0002] Image forming devices such as laser printers and copiers typically have an image processing unit and a developing unit. The developing unit uses a developer such as toner provided by the developing unit to develop the electrostatic latent image formed on the image processing unit, thereby forming a visible image on a medium such as paper. The developing unit includes a processing cartridge, which is a cartridge that can be removably installed in the main body of the image forming device. The processing cartridge includes a powder hopper that holds the developer. To facilitate users in determining the service life of the processing cartridge, some processing cartridges are provided with a counting gear that can cooperate with a detection mechanism on the image forming device. When the processing cartridge is installed and used, the image forming device resets the preset life value within the image forming device by identifying the counting gear on the processing cartridge. When the number of pages printed by the processing cartridge reaches the preset life value, it is considered that the developer in the processing cartridge has been consumed, and the processing cartridge needs to be replaced before printing can continue.

[0003] However, some large-capacity process cartridges contain more developer than a standard process cartridge. Since the preset lifespan of an image forming device is typically set based on the capacity of a standard process cartridge and cannot be modified, the image forming device indicates that the developer has been depleted after the number of printed pages reaches the preset lifespan, rendering the process cartridge inoperable. This results in the developer in the large-capacity process cartridge not being fully utilized, resulting in waste. Furthermore, for some refillable process cartridges, the counting gear cannot be reset, so even if the developer is refilled, the process cartridge cannot be reused, increasing user costs. Summary of the Invention

[0004] The object of the present invention is to provide a processing box in which a counting gear can be automatically reset.

[0005] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0006] The processing box with a counting gear comprises a shell, a gear end cover arranged on the outside of one end of the shell, a counting gear assembly covered by the gear end cover, and a driving gear; the counting gear assembly comprises: a gear bracket rotatable around a first axis on the end wall of the shell; a counting gear with a full tooth structure rotatable around a second axis on the gear bracket, and the counting gear can move outward or inward along its own axial direction; when the gear bracket rotates, it drives the counting gear to move between a meshing position and a disengagement position, and in the meshing position, the counting gear and the driving gear are meshed, and in the disengagement position, the counting gear and the driving gear are separated; the counting gear is movably arranged on the shell A limiting slider on the end wall of the body, the top of which can be exposed from the gear end cover when the limiting slider moves upward; a separation block rotatably arranged on the limiting slider, the separation block having a limiting convex portion, the separation block can be rotated between an initial position and a limiting position, and when in the limiting position, the limiting convex portion limits the rotation of the counting gear and separates the counting gear and the driving gear; a bracket return spring that moves the gear bracket from the separation position to the meshing position; a slider return spring that moves the limiting slider upward; a block return spring that moves the separation block to the limiting position; and a compression spring that causes the counting gear to approach the end wall of the housing along its own axial direction.

[0007] In some embodiments, a first assembly column protruding outward is provided on the end wall of the shell, the gear bracket is sleeved on the first assembly column, and the axis of the first assembly column is the first axis; a second assembly column parallel to the first assembly column is provided on the gear bracket, the counting gear is sleeved on the second assembly column, and the axis of the second assembly column is the second axis.

[0008] In some embodiments, the gear bracket is provided with a counting gear movement guide portion protruding from the surface of the gear bracket, and the counting gear movement guide portion includes a first guide section and a second guide section, the axial height of the first guide section increases from front to back, and the axial height of the second guide section decreases from front to back; the inner side of the counting gear is provided with a support rib protruding in a direction parallel to the axis of the counting gear, the support rib is opposite to the gear bracket, and the end portion can contact the counting gear movement guide portion; when the counting gear rotates, the support rib moves along the first guide section and the second guide section in sequence, when the support rib moves along the first guide section, the counting gear moves axially outward, and when the support rib moves along the second guide section, the counting gear moves axially inward; when the separation block is in the initial position, the limiting protrusion does not contact the counting gear, and when the separation block is in the limiting position, the limiting protrusion extends behind the second guide section, blocks and limits the support rib, and causes the counting gear to leave the driving gear.

[0009] Furthermore, a third guide segment is provided between the first guide segment and the second guide segment. The axial height of the third guide segment remains unchanged and is the same as the height of the axial highest point of the first guide segment and the second guide segment.

[0010] In some embodiments, the compression spring is disposed between the gear end cover and the counting gear.

[0011] Furthermore, the counting gear movement guide portion is arranged on the periphery of the second assembly column.

[0012] Furthermore, the projection of the counting gear moving guide portion on the surface of the gear bracket is arc-shaped.

[0013] As can be seen from the above technical solution, the counting gear assembly of the present invention is configured by setting the counting gear on a rotatable gear bracket, and the gear bracket drives the counting gear to move between an engaged position and a disengaged position. In the engaged position, the counting gear rotates with the drive gear to detect the installation of the processing cartridge. In the disengaged position, the counting gear does not rotate with the drive gear and is limited by the separation block. After the recognition of the preset value of the processing cartridge life is completed once, the limit slider drives the separation block to automatically return to the initial position, and the counting gear automatically returns to the engaged position as the gear bracket rotates. After installation, it can be recognized by the detection mechanism of the image forming device again, and the preset life value can be reset, thereby continuing to use the remaining developer in the processing cartridge, or refilling the processing cartridge with developer and reusing it. The processing cartridge of the present invention does not require manual operation to reset the counting gear. It can be automatically reset by removing the processing cartridge and then inserting it again. It is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic structural diagram of a process cartridge according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic structural diagram of a process cartridge according to an embodiment of the present invention with the gear end cover removed;

[0017] Figure 3 This is a structural schematic diagram from another angle of the process cartridge according to an embodiment of the present invention after the gear end cover is removed;

[0018] Figure 4 Schematic diagram of the exploded structure of a processing cartridge counting gear assembly according to an embodiment of the present invention;

[0019] Figure 5 This is a structural diagram of a process cartridge according to an embodiment of the present invention, with the gear end cover, counting gear and first elastic member removed;

[0020] Figure 6 for Figure 5 A partial enlarged schematic diagram of part A;

[0021] Figure 7 This is a schematic structural diagram of a gear bracket according to an embodiment of the present invention;

[0022] Figure 8 This is a schematic structural diagram of a counting gear according to an embodiment of the present invention;

[0023] Figure 9 This is a structural diagram of a separation block according to an embodiment of the present invention;

[0024] Figure 10 This is a schematic structural diagram of the inner side of the end cover according to an embodiment of the present invention;

[0025] Figure 11 This is a schematic diagram of the separation rib being located closest to the shell end wall;

[0026] Figure 12 This is a schematic diagram of the separation rib being located farthest from the shell end wall;

[0027] Figure 13 This is a schematic diagram of the counting gear assembly before the process cartridge falls into the machine;

[0028] Figure 14 This is a schematic diagram of the status of the counting gear assembly when the printer top cover is closed after the process cartridge is dropped into the printer;

[0029] Figure 15 This is a schematic diagram of the counting gear moving outward along the axial direction;

[0030] Figure 16 This is a schematic diagram of the state when the counting gear and the driving gear are separated.

[0031] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with the accompanying drawings. When describing the embodiments of the present invention in detail, for the convenience of explanation, the drawings showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. It should be noted that the drawings are simplified and all use non-precise scales, which are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features; the terms "front", "back", "bottom", "upper", "lower", "front", "back", "left", "right", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two components; it can mean a wireless connection or a wired connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0034] Reference Figures 1 to 6The processing box of this embodiment includes a shell 1, a gear end cover 2 and a counting gear assembly. The shell 1 has a powder bin for containing developer, and a stirring frame (not shown) that can rotate around its own axis is provided in the powder bin. A gear end cover 2 is provided on the outside of one end of the shell 1, and the counting gear assembly is provided between the gear end cover 2 and the end wall of the shell 1, and is covered by the gear end cover 2. In addition to the counting gear, other gears are provided on the end wall of the shell 1, such as a stirring frame gear, an intermediate transmission gear, etc. These gears are engaged with each other to drive the corresponding rotating parts to rotate. For the sake of convenience, the gear that directly engages with the counting gear and drives the counting gear to rotate is defined as a driving gear. The driving gear can be a stirring frame gear or other transmission gear. The driving gear of this embodiment is a stirring frame gear 11, and the stirring frame gear 11 is provided at the end of the stirring frame.

[0035] The counting gear assembly of this embodiment includes: a counting gear 3, a gear bracket 4, a limiting slider 5, a slider return spring 6, a separation shift block 7, a shift block return spring 8, a bracket return spring 9 and a compression spring 10.

[0036] The counting gear 3 in this embodiment is a fully toothed gear, meaning that meshing teeth are evenly distributed along the circumferential outer edge of the counting gear 3, connected end to end. The counting gear 3 is mounted on the end wall of the housing 1 via a gear bracket 4. In this embodiment, a first assembly column 1a is provided on the end wall of the housing 1, projecting outward parallel to the axis of the stirring frame (the axis of the counting gear). The gear bracket 4 is mounted on the first assembly column 1a and is rotatable about the axis of the first assembly column 1a (the first axis). When the gear bracket 4 rotates, the counting gear 3 mounted on the gear bracket 4 moves with the gear bracket 4. Rotating about the first axis, the gear bracket 4 can drive the counting gear 3 to an engaged position or a disengaged position. The engaged position is where the counting gear 3 and the drive gear (the stirring frame gear 11 in this embodiment) are engaged and rotate synchronously with the drive gear. The disengaged position is where the counting gear 3 and the drive gear are disengaged and do not rotate with the drive gear.

[0037] A support return spring 9 is disposed between the gear support 4 and the end wall of the housing 1. This support return spring 9 is used to provide a force for the gear support 4 to move from the disengaged position to the engaged position, causing the gear support 4 to swing about the first axis from the disengaged position back to the engaged position. In this embodiment, the support return spring 9 is a torsion spring. In other embodiments, other types of elastic elements may be used, as long as they provide a force for returning the gear support 4.

[0038] like Figure 7 As shown, a second assembly column 4a is provided on the gear bracket 4. The second assembly column 4a is parallel to the first assembly column 1a. The counting gear 3 is sleeved on the second assembly column 4a and can rotate around the axis (second axis) of the second assembly column 4a.

[0039] In this embodiment, the counting gear is detected and identified by cooperating with a detection mechanism on the image forming device during the counting gear's axial movement. The counting gear can also be identified by cooperating with the detection mechanism during axial outward movement. Specifically, this embodiment achieves axial movement of the counting gear by providing a counting gear movement guide on the gear support 4. The counting gear movement guide protrudes from the surface of the gear support 4. Its projection on the surface of the gear support 4 can be an arc or a circle. In this embodiment, the counting gear movement guide projects an arc on the surface of the gear support 4. The counting gear movement guide is disposed on the periphery of the second assembly post 4a. The counting gear movement guide includes at least a first guide section 4b and a second guide section 4c. The first guide section 4b is positioned in front of the second guide section 4c. The axial height of the first guide section 4b (the distance between the end face of the guide section in the axial direction of the counting gear and the surface of the gear support) increases from front to back, forming a guide slope that becomes increasingly higher. The axial height of the second guide section 4c decreases from front to back, forming a guide slope that becomes increasingly lower. The axial highest point of the first guide section 4b is the same as the axial highest point of the second guide section 4c. In this embodiment, the first guide segment 4b and the second guide segment 4c are connected by the third guide segment 4d. The axial height of the third guide segment 4d remains unchanged. The axial height of the third guide segment 4d is the same as the height of the axial highest point of the first guide segment 4b and the second guide segment 4c.

[0040] A compression spring 10 is provided between the counting gear 3 and the gear end cover 2 ( Figure 9 ), the function of the compression spring 10 is to press the counting gear 3 to the gear bracket 4. Figure 8 As shown, a support rib 3a protruding in a direction parallel to the axis of the counting gear is provided on the inner side of the counting gear 3 (the side of the counting gear opposite to the gear bracket 4). When the counting gear 3 is mounted on the gear bracket 4, the support rib 3a is opposite to the gear bracket 4, and the end portion is in contact with the moving guide portion of the counting gear. When the counting gear 3 rotates, it moves in sequence along the first guide segment 4b, the third guide segment 4d and the second guide segment 4c. Since the heights of the first guide segment 4b and the second guide segment 4c vary, when the support rib 3a moves along the first guide segment 4b, the counting gear 3 will move further and further away from the gear bracket 4 ( Figure 12 ), that is, moving outward along the axial direction. When it moves to the position farthest from the gear bracket 4, the counting gear 3 can cooperate with the detection mechanism of the image forming device such as the printer to realize the recognition of the counting gear, and then reset the preset life value of the image forming device. When the supporting rib 3a moves along the second guide section 4c, the counting gear 3 will get closer and closer to the gear bracket 4, that is, move inward along the axial direction and return to the initial position ( Figure 11 ).

[0041] A limit slider 5 is mounted on the end wall of the housing 1 so as to be movable up and down. When the limit slider 5 moves upward, its top portion is exposed outside the gear end cover 2, allowing the top portion of the limit slider 5 to contact the top cover of the image forming apparatus. When the top cover is closed, the top cover presses the limit slider 5 downward. A slider return spring 6 is disposed between the limit slider 5 and the end wall of the housing 1 to provide upward return force to the limit slider 5. In this embodiment, the limit slider 5 is T-shaped.

[0042] The separation block 7 is rotatably mounted on the limit slider 5. As the limit slider 5 moves up and down, it drives the separation block 7 with it. The separation block 7 can swing between an initial position and a limit position. When in the limit position, the separation block 7 moves the counting gear 3 (gear bracket 4) away from the drive gear 11. A block return spring 8 is interposed between the separation block 7 and the limit slider 5 to provide a force for returning the separation block 7 to the limit position.

[0043] like Figure 12 As shown, the separating block 7 has a stopper protrusion 7a. When the stopper slide 5 moves downward, the separating block 7 also moves downward, and the stopper protrusion 7a can extend behind the second guide section 4c of the gear bracket. If the counting gear 3 has not yet begun to rotate, the supporting rib 3a of the counting gear 3 is located behind the second guide section 4c. At this time, the stopper protrusion 7a of the downwardly moving separating block 7 is blocked by the supporting rib 3a, and the separating block 7 overcomes the force of the block return spring 8 and rotates to a predetermined position. After the counting gear 3 starts to rotate, the supporting rib 3a moves further and further away from the second guide section 4c. The limiting protrusion 7a is no longer blocked by the supporting rib 3a and rotates to the limiting position under the action of the shift block reset spring 8. At this time, after the limiting protrusion 7a extends to the second guide section 4c, it can limit the rotating supporting rib 3a, so that the supporting rib 3a (counting gear 3) cannot continue to rotate. Under the blocking action of the limiting protrusion 7a, the gear bracket 4 swings to the separation position, and the counting gear 3 and the driving gear are separated, so that the counting gear cannot rotate with the driving gear.

[0044] The following describes the use of the process cartridge loader and the reset process of the counting gear in accordance with the present embodiment in conjunction with the accompanying drawings. In the following description, the image forming apparatus is described as a printer. Figures 13 to 16 This is a schematic diagram of the process from the counting gear starting to rotate to the completion of counting and separation and stopping of rotation.

[0045] like Figure 13As shown, when the process cartridge is installed in the printer and the cover is not closed, the limit slider 5 is moved upward by the slider return spring 6, and the top of the limit slider 5 protrudes outside the gear end cover (not shown). At this time, the separation block 7 also moves upward with the limit slider 5, and the limit protrusion 7a does not contact the counting gear 3. The gear bracket 4 is swung to the meshing position under the action of the bracket return spring 9, and the counting gear 3 and the stirring frame gear 11 (drive gear) are meshed. Before the counting gear 3 rotates, the support rib 3a is in the initial position, that is, behind the second guide section 4c. The counting gear 3 is also at the lowest point in the axial direction, that is, the position closest to the end wall of the housing 1 and the position closest to the gear bracket 4.

[0046] like Figure 14 As shown, when the printer cover 100 is closed, the printer cover 100 presses downward on the limit slider 5. The limit slider 5 moves downward under the action of the slider return spring 6, and the separation block 7 also moves downward. As the separation block 7 moves downward, it is blocked by the counting gear 3 (support rib 3a) that has not yet begun to rotate. The separation block 7 overcomes the force of the block return spring 8 and deflects upward by a certain angle, so as not to interfere with the rotation of the counting gear 3. At this time, the gear bracket 4 remains in the meshing position under the action of the bracket return spring 9, and the counting gear 3 and the stirring frame gear 11 remain meshed. When the printer starts working, the stirring frame gear 11 rotates due to the rotational drive force from the printer, driving the counting gear 3 to rotate together.

[0047] like Figure 15 As shown, when the counting gear 3 begins to rotate, the support rib 3a gradually moves away from the second guide section 4c as the counting gear 3 rotates, moving toward the first guide section 4b and then along the first guide section 4b. During this movement along the first guide section 4b, the counting gear 3 moves further and further away from the end wall of the housing 1 along its own axis. When it reaches the highest point of the first guide section 4b and continues to move along the third guide section 4d, the counting gear 3 can cooperate with the detection mechanism on the printer to achieve counting gear recognition. During this process, the printer top cover 100 is always pressed against the limit slider 5, and the limit slider 5 and the separation block 7 mounted thereon remain in a downward position. After the counting gear 3 rotates, the support rib 3a leaves the second guide section 4c. The separation block 7 is no longer blocked by the support rib 3a and rotates downward under the force of the block return spring 8. The limit protrusion 7a extends to the limit position, that is, extends behind the second guide section 4c.

[0048] like Figure 16As shown, after the process cartridge is installed and put into use, the printer top cover 100 is constantly pressed against the limit slider 5. The limit slider 5 and the separation block 7 disposed thereon remain in a downward position, and the limit protrusion 7a extends behind the second guide section 4c. After the counting gear 3 is detected by the printer detection mechanism, it continues to rotate along with the drive gear 11, and the support rib 3a moves onto the second guide section 4c and along the second guide section 4c. During this movement along the second guide section 4c, the counting gear 3 itself moves axially closer to the end wall of the housing. When it reaches the end of the second guide section 4c and leaves the second guide section 4c, the support rib 3a is blocked by the limit protrusion 7a. Under the blocking force of the limit protrusion 7a, the counting gear 3 (gear bracket 4) is pushed backward a certain distance by the limit protrusion 7a, causing the counting gear 3 to separate from the stirring frame gear 11, and thus the counting gear 3 cannot continue to rotate with the stirring frame gear 11.

[0049] When the number of pages printed by the printer reaches the preset life value, indicating that the developer in the process cartridge has been consumed, the printer top cover 100 is opened. The printer top cover 100 no longer presses the limit slider 5. The limit bracket 5 drives the separation block 7 to reset upward under the action of the slider return spring 6. After the separation block 7 moves upward, the limit protrusion 7a no longer limits the counting gear 3. The gear bracket 4 returns to the meshing position under the action of the bracket return spring 9. The counting gear 3 moves together with the gear bracket 4, completing the reset of the counting gear 3. Take out the process cartridge and reinstall it, and return to Figure 13 In the state shown, you can continue to use the developer in the powder hopper without being restricted by the standard capacity.

[0050] If the number of pages printed by the printer reaches the preset life value again, indicating that the developer in the process cartridge has been consumed, the above process can be repeated until the developer in the process cartridge is completely consumed.

[0051] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A process cartridge with a counting gear, comprising a housing, a gear end cover disposed on the outside of one end of the housing, a counting gear assembly and a driving gear covered by the gear end cover; It is characterized in that The counting gear assembly comprises: a gear support rotatably disposed on the end wall of the housing about a first axis; a counting gear with a full tooth structure rotatably disposed on the gear bracket about a second axis, the counting gear being movable outward or inward along its own axis; the counting gear being driven to move between an engaged position and a disengaged position when the gear bracket rotates, wherein the counting gear is engaged with the drive gear in the engaged position and is disengaged from the drive gear in the disengaged position; A limit slider is movably arranged on the end wall of the housing, and the top of the limit slider is exposed from the gear end cover when the limit slider moves upward; A separation block is rotatably disposed on the limiting slider, the separation block having a limiting convex portion. The separation block can rotate between an initial position and a limiting position. When the process cartridge is installed in the printer and the cover is not closed, the separation block is at the initial position. When the separation block is at the limiting position, the limiting convex portion limits the rotation of the counting gear and separates the counting gear from the driving gear. a bracket return spring for moving the gear bracket from the disengaged position to the engaged position; A slider return spring for causing the limit slider to move upward; a shift block return spring for moving the separation shift block toward the limit position; a compression spring for causing the counting gear to move axially toward the end wall of the housing; The gear bracket is provided with a counting gear movement guide portion protruding from the surface of the gear bracket, and the counting gear movement guide portion includes a first guide section and a second guide section, the axial height of the first guide section increases from front to back, and the axial height of the second guide section decreases from front to back; The inner side of the counting gear is provided with a supporting rib protruding in a direction parallel to the axis of the counting gear, the supporting rib is opposite to the gear bracket, and the end portion can contact the moving guide portion of the counting gear; When the counting gear rotates, the supporting rib moves along the first guide section and the second guide section in sequence. When the supporting rib moves along the first guide section, the counting gear moves axially outward, and when the supporting rib moves along the second guide section, the counting gear moves axially inward. When the separation block is located at the initial position, the limiting protrusion does not contact the counting gear. When the separation block is located at the limiting position, the limiting protrusion extends behind the second guide section, blocks and limits the supporting ribs, and makes the counting gear leave the driving gear.

2. The process cartridge according to claim 1, wherein: A first assembly column protruding outward is provided on the end wall of the housing, the gear bracket is sleeved on the first assembly column, and the axis of the first assembly column is the first axis; The gear bracket is provided with a second assembly column parallel to the first assembly column, the counting gear is sleeved on the second assembly column, and the axis of the second assembly column is the second axis.

3. The process cartridge according to claim 1, wherein: A third guide segment is provided between the first guide segment and the second guide segment. The axial height of the third guide segment remains unchanged and is the same as the height of the axial highest point of the first guide segment and the second guide segment.

4. The process cartridge according to claim 2, wherein: The counting gear movement guide portion is arranged on the periphery of the second assembly column.

5. The process cartridge according to claim 1, wherein: The projection of the counting gear moving guide portion on the surface of the gear bracket is arc-shaped.

6. The process cartridge according to claim 1, wherein: The compression spring is arranged between the gear end cover and the counting gear.

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