Processing box

Abstract

The utility model discloses a processing box, which comprises a frame, a driving mechanism, a driving mechanism and a driving mechanism, wherein the frame is provided with a developing agent accommodating chamber capable of accommodating developing agents; a developing roller; a powder feeding roller; the connecting piece is arranged at the first end of the frame in the first direction, and the connecting piece can receive driving force from the imaging equipment so as to drive the developing roller and the powder feeding roller to rotate; the first gear and the second gear are connected to the two ends of the developing roller respectively, the third gear is connected to one end of the powder feeding roller, in the first direction, the first gear is located at the first end of the frame, the second gear and the third gear are located at the second end of the frame, and in the second direction, the first gear is located at the first end of the frame. The first gear can receive the driving force of the linkage piece to rotate, and the second gear is operably connected to the third gear and can transmit the driving force to the third gear.

Description

Technical Field

[0001] The utility model relates to an imaging device, in particular to a processing box which can be detachably installed in the imaging device. Background Art

[0002] The prior art discloses a processing cartridge, which can be detachably installed in an imaging device, wherein the processing cartridge includes a first frame for accommodating developer and a second frame for accommodating waste developer, a developing roller, a powder feeding roller and a stirring frame rotatably supported on the first frame, and a photosensitive drum rotatably supported on the second frame, wherein the stirring frame is arranged in a developer accommodating chamber of the first frame and can be used to stir the developer in the developer accommodating chamber so that the developer is transported to the developing roller via the powder feeding roller, and the developing roller can transport the developer carried thereon to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum; the processing cartridge also includes a coupling for driving the above-mentioned developing roller, powder feeding roller and stirring frame to rotate, and the coupling The device can be coupled with the drive head in the imaging device and can receive driving force to drive the developing roller, the powder feeding roller and the stirring frame to rotate. Specifically, the coupling can be operably connected to one end of the powder feeding roller in the length direction. The processing box also includes a powder feeding roller gear connected to the other end of the powder feeding roller in the length direction, a developing roller gear connected to the developing roller, and a stirring frame gear connected to the stirring frame. The powder feeding roller gear, the developing roller gear and the stirring frame gear are located at the same end of the processing box, and the coupling is located at the other end of the processing box. The driving force of the coupling can be transmitted to the developing roller gear and the transmission gear meshing with the stirring frame gear respectively through the powder feeding roller and the powder feeding roller gear, thereby driving the developing roller and the stirring frame to rotate respectively. Utility Model Content

[0003] The utility model provides a processing box and provides multiple new driving modes, which are mainly achieved through the following methods:

[0004] A process cartridge is installable in an image forming apparatus along a first direction, the process cartridge comprising:

[0005] a frame having a developer accommodating chamber for accommodating developer, wherein the frame has a first end and a second end opposite to each other in the first direction;

[0006] a developing roller rotatably supported on the frame and rotatable about an axis extending in the first direction; a powder feeding roller rotatably supported on the frame, wherein when the process cartridge is installed in the image forming apparatus, the developing roller and the powder feeding roller are arranged above the developer accommodating chamber in a second direction intersecting the first direction;

[0007] a coupling member disposed at the first end of the frame in the first direction, the coupling member being capable of receiving a driving force from the imaging device to drive the developing roller and the powder feeding roller to rotate;

[0008] The processing box also includes a first gear and a second gear respectively connected to the two ends of the developing roller and a third gear connected to one end of the powder feeding roller, wherein, in the first direction, the first gear is located at the first end of the frame, the second gear and the third gear are located at the second end of the frame, the first gear can receive the driving force of the connecting member to rotate, and the second gear can be operably connected to the third gear and can transmit the driving force to the third gear.

[0009] Furthermore, the coupling member includes a coaxially arranged coupling protrusion and a coupling tooth, the coupling protrusion can be coupled to the driving head of the imaging device to receive a driving force, and the coupling tooth can rotate in response to the rotation of the coupling protrusion.

[0010] Furthermore, the coupling protrusion and the coupling tooth are integrally formed.

[0011] Furthermore, the coupling teeth are in meshing engagement with the first gear.

[0012] Furthermore, the second gear is in meshing engagement with the third gear.

[0013] Furthermore, the processing box also includes a stirring frame and a fourth gear connected to one end of the stirring frame; the processing box also includes a first transfer gear and a second transfer gear connected between the second gear and the fourth gear, and the second gear can transmit the received driving force to the fourth gear through the first transfer gear and the second transfer gear in sequence.

[0014] Furthermore, a transfer gear is provided between the second gear and the third gear, and the second gear can transfer the received driving force to the third gear through the transfer gear, and the number of the transfer gears is an odd number.

[0015] Furthermore, the number of the transmission gear is 1.

[0016] Furthermore, the rotation speed of the surface of the powder feeding roller is less than or equal to the rotation speed of the surface of the developing roller.

[0017] Furthermore, the process cartridge further includes a guide protrusion capable of guiding the process cartridge for installation, wherein the guide protrusion is located at the first end of the frame in the first direction and is arranged adjacent to the coupling. Furthermore, the process cartridge further includes a gear cover arranged at the first end of the frame in the first direction, wherein the gear cover can cover at least a portion of the coupling, and the guide protrusion is configured to protrude outward from an outer surface of the gear cover.

[0018] Furthermore, in the first direction, the outwardly protruding end of the guide protrusion is flush with the outwardly protruding end of the coupling member or is further away from the second end of the frame than the outwardly protruding end of the coupling member. Furthermore, the process cartridge further includes a gear cover arranged at the first end of the frame in the first direction, the gear cover being capable of covering at least a portion of the coupling member, and in the first direction, a distance P between the outwardly protruding end of the coupling member and an outer surface of the gear cover is, wherein 2.5 mm < P < 5 mm.

[0019] Furthermore, 3mm<P<4mm.

[0020] The utility model provides a processing box, in which the connecting member is in contact and meshing with the first gear, and can directly drive the developing roller to rotate, reducing the transmission distance of the driving force from the connecting member to the developing roller, reducing the loss of driving force, ensuring the speed of the developing roller when in contact with the photosensitive drum, and helping to improve the printing quality of the processing box. In addition, the driving force output by the second gear (developing roller gear) can drive the powder feeding roller gear and the stirring frame gear, providing a new driving method. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the process cartridge being installed on the imaging device in Example 1 of the present utility model;

[0022] Figure 2 This is a schematic diagram of the process cartridge in Example 1 of the present utility model from a first angle;

[0023] Figure 3 This is an exploded schematic diagram of the process cartridge in Example 1 of the present utility model;

[0024] Figure 4 This is a schematic cross-sectional view of the process cartridge in Example 1 of the present utility model;

[0025] Figure 5 This is a schematic diagram of the developing unit in Example 1 of the present utility model;

[0026] Figure 6 This is an exploded schematic diagram of the developing unit in Example 1 of the present utility model;

[0027] Figure 7 This is a schematic diagram of the gear train at a first angle in Example 1 of the present utility model;

[0028] Figure 8 This is a second angle diagram of the gear train in Example 1 of the present utility model;

[0029] Figure 9 This is a schematic diagram of the processing box in Example 1 of the present utility model from a second angle;

[0030] Figure 10 Schematic diagram of the coupling protrusion of the process cartridge in Example 1 of the present utility model;

[0031] Figure 11 This is a schematic diagram of the gear train of Example 2 of the present utility model. DETAILED DESCRIPTION

[0032] like Figure 1-10 As shown, a processing box 100 in the present invention is shown. The processing box 100 can be installed in the imaging device 1 along a first direction (i.e., the length direction of the processing box), and the direction intersecting the first direction is a second direction; the processing box 100 includes a frame, the frame includes a first frame 101 for accommodating developer and a second frame 102 for accommodating waste developer, in the first direction, the frame has a first end and a second end separated from each other, and in the second direction, the frame has a third end and a fourth end separated from each other; the processing box 100 also includes a developing roller 111, a powder feeding roller 112 and a stirring frame 113 rotatably supported on the first frame 101, a developing roller 111, a powder feeding roller 112 and a stirring frame 113 rotatably supported on the second frame 102 The photodrum 114 and the charging roller 115 are arranged in the second direction, the developing roller 111 and the powder feeding roller 112 are arranged at the third end of the frame, and when the processing box 100 is installed in the imaging device 1, the developing roller 111 is arranged at a position closer to the third end of the frame than the developer holding chamber 101a in the second direction; wherein, the stirring frame 113 is arranged in the developer holding chamber 101a of the first frame 101, and is configured to supply the developer from the developer holding chamber 101a to the powder feeding roller 112, the powder feeding roller 112 can supply the developer to the developing roller 111, and the developing roller 111 can transport the developer carried thereon to the photosensitive drum 114 to develop the electrostatic latent image on the photosensitive drum 114.

[0033] The processing box 100 also includes a connecting member 120, a first gear 121, a second gear 122 and a third gear 123. In the first direction, the connecting member 120 and the first gear 121 are arranged at the first end of the frame, and the second gear 122 and the third gear 123 are arranged at the second end of the frame; wherein, the connecting member 120 includes a connecting protrusion 120a that can be coupled with the driving head in the imaging device and receive the rotational driving force output thereof, and a connecting tooth 120b integrally formed with the connecting protrusion 120a, and the rotation axes of the connecting protrusion 120a and the connecting tooth 120b are coaxially arranged. In some embodiments, the connecting protrusion 120a and the connecting tooth 120b can also be set separately, which is not a limitation. It is just that in this embodiment, the integrally formed connecting protrusion 120a and the connecting tooth 120b help to simplify the structure of the connecting member 120.

[0034] The processing cartridge 100 further includes a gear cover 131 arranged at a first end of the frame in the first direction. The gear cover 131 can cover at least a portion of the coupling member 120. The coupling member 120 can be exposed to the outside of the processing cartridge 100 through an avoidance opening (not shown) provided on the gear cover 131 to couple with a drive head of the imaging device to receive a driving force. A guide protrusion 132 is formed on the outer surface of the gear cover 131. The guide protrusion 132 is arranged adjacent to the coupling protrusion 120a. The guide protrusion 132 has a guide inclined surface 132a. When the processing cartridge 100 is installed to the imaging device along the installation direction, the guide protrusion 132 is passed through the processing cartridge 100. The guide bevel 132a contacts the imaging device and guides the coupling protrusion 120a of the process cartridge 100 to a position coupled with the drive head of the imaging device (i.e., the coaxial position of the two). That is, even if the process cartridge 100 deviates from the installation position due to accidental installation during the installation process of the process cartridge 100, the guide protrusion 132 can correctly guide the process cartridge 100 to the guide protrusion 132 in the correct installation direction 132a, thereby guiding the coupling of the coupling protrusion 120a with the drive head of the imaging device. Therefore, by providing the guide protrusion 132 with the guide bevel 132a, the coupling of the coupling protrusion 120a can be improved. Synthetic power; further, since the guide protrusion 132 has the function of guiding the installation of the processing cartridge 100, the guide protrusion 132 needs to contact the imaging device before the coupling protrusion 120a, otherwise the guide protrusion 132 will not play a guiding role, and the coupling protrusion 120a will contact the driving head of the imaging device before the processing cartridge 100, thereby causing interference when the processing cartridge 100 deviates from the installation direction. Therefore, the guide protrusion 132 of the processing cartridge 100 of the present invention is constructed so that the outward protruding end in the first direction is flush with or further than the outward protruding end of the coupling protrusion 120a. away from the second end of the frame (i.e., protruding further outward than the outward protruding end of the coupling protrusion 120a); further, the coupling amount of the coupling protrusion 120a and the driving head of the imaging device in the first direction needs to be sufficient to ensure the coupling stability of the two, but it should not be too large to avoid the processing box 100 being unable to be installed in place due to the interference between the coupling protrusion 120a and the driving head of the imaging device. Therefore, the distance between the outward protruding end of the coupling protrusion 120a in the first direction and the outer surface of the gear cover 131 is defined as P, where 2.5mm<P<5mm; more preferably, 3mm<P<4mm.

[0035] The first gear 121 and the second gear 122 are respectively mounted at the two ends of the developing roller 111 in the length direction and can rotate together with the developing roller 111. The first gear 121 is in contact and meshing with the coupling tooth 120b and can receive the driving force transmitted by the coupling member 120, thereby driving and rotating together with the developing roller 111 and the second gear 122. That is, the driving force output by the coupling member 120 can be transmitted to the second gear 122 via the first gear 121 and the developing roller 111 in sequence. Optionally, the coupling tooth 120b may not be in direct contact and meshing with the first gear 121, and a tooth 120b may be provided between the coupling tooth 120b and the first gear 121. At least one transfer gear is provided to transfer the driving force on the connecting tooth 120b to the first gear 121. Therefore, the transfer method for the connecting tooth 120b to transfer the driving force to the first gear 121 is also not limited; the third gear 123 can receive the driving force from the second gear 122. In this embodiment, the third gear 123 and the second gear 122 are in contact and meshed to simplify the gear system structure of the processing box 100. Of course, optionally, at least one transfer gear can also be arranged between the third gear 123 and the second gear 122, as long as it is ensured that the third gear 123 can receive the driving force of the second gear 122.

[0036] Furthermore, the processing box 100 also includes a fourth gear 126 connected to the stirring frame 113. The fourth gear 126 is located at the second end of the frame in the first direction. In addition, in order to reduce the rotation speed of the stirring frame 113, the processing box 100 also includes a plurality of transfer gears arranged between the second gear 122 and the fourth gear 126 along the driving force transmission direction. In this embodiment, there are two transfer gears, namely a first transfer gear 124 and a second transfer gear 125 that are in contact and meshing with each other, wherein the first transfer gear 124 is in contact and meshing with the second gear 122, and the second transfer gear 125 is in contact and meshing with the fourth gear 126. In other words, the second gear 122 is simultaneously in contact and meshing with the third gear 126. The gear 123 is in contact and meshing with the first transfer gear 124. On the one hand, the driving force on the second gear 122 can be transmitted to the third gear 123 to drive the powder feeding roller 112 to rotate. On the other hand, the driving force on the second gear 122 can also be transmitted to the fourth gear 126 via the first transfer gear 124 and the second transfer gear 125 to drive the stirring frame 113 to rotate. Optionally, the first transfer gear 124 can also be in contact and meshing with the third gear 123, that is, the driving force on the second gear 122 can be transmitted to the fourth gear 126 via the third gear 123, the first transfer gear 124, and the second transfer gear 125. This arrangement can also achieve the above functions.

[0037] In general, in the processing box 100 of the present invention, the connecting member 120 is in contact and engaged with the first gear 121, and can directly drive the developing roller 111 to rotate, reducing the transmission distance of the driving force from the connecting member 120 to the developing roller 111, reducing the loss of driving force, and ensuring the speed of the developing roller 111 when in contact with the photosensitive drum 114, which helps to improve the printing quality of the processing box 100.

[0038] Example 2

[0039] like Figure 11 As shown, a processing box in Example 2 of the present invention will be introduced next. The parts that are the same as the processing box in the above-mentioned Example 1 will not be repeated in this embodiment. The difference is that, along the driving force transmission direction, an odd number of gears are provided between the second gear 222 and the third gear 223 to ensure that the rotation directions of the developing roller and the powder feeding roller are the same; preferably, the number of gears between the two is 1, namely the first transfer gear 227, which can reduce the number of gears in the gear train and simplify the gear train of the processing box to the greatest extent. The processing box also includes a second transfer gear engaged between the first transfer gear and the fourth gear, so that the fourth gear can receive the driving force from the second gear 222 for rotation through the first transfer gear 227 and the second transfer gear; optionally, to make the developing roller and the powder feeding roller have the same rotation direction, it is not limited to the third gear receiving the driving force from the second gear. The processing box can also be constructed so that the third gear receives the driving force from the connecting member before the second gear, and then the second gear receives the driving force from the third gear, which can also achieve the above function.

[0040] Furthermore, the rotation speed of the powder feeding roller surface is less than or equal to the rotation speed of the developing roller surface; preferably, the rotation speed of the powder feeding roller surface is equal to the rotation speed of the developing roller surface, so as to ensure that the powder feeding roller can supply the developer to the developing roller to the maximum extent, and avoid printing quality problems caused by too little developer on the developing roller.

Claims

1. A process cartridge, installable in an image forming apparatus along a first direction, the process cartridge comprising: a frame having a developer accommodating chamber for accommodating developer, wherein the frame has a first end and a second end opposite to each other in the first direction; a developing roller rotatably supported on the frame and rotatable about an axis extending along the first direction; a powder feeding roller rotatably supported on the frame, wherein when the process cartridge is installed in the image forming apparatus, the developing roller and the powder feeding roller are arranged above the developer containing chamber in a second direction intersecting the first direction; a coupling member disposed at the first end of the frame in the first direction, the coupling member being capable of receiving a driving force from the imaging device to drive the developing roller and the powder feeding roller to rotate; It is characterized in that the processing box also includes a first gear and a second gear respectively connected to the two ends of the developing roller and a third gear connected to one end of the powder feeding roller, wherein, in the first direction, the first gear is located at the first end of the frame, the second gear and the third gear are located at the second end of the frame, the first gear can receive the driving force of the connecting member to rotate, and the second gear can be operably connected to the third gear and can transmit the driving force to the third gear.

2. The process cartridge according to claim 1, wherein The coupling member includes a coaxially arranged coupling protrusion and a coupling tooth, the coupling protrusion being coupleable with a driving head of the image forming apparatus to receive a driving force, and the coupling tooth being rotatable in response to rotation of the coupling protrusion.

3. The process cartridge according to claim 2, wherein: The coupling protrusion and the coupling tooth are integrally formed.

4. The process cartridge according to claim 3, wherein: The coupling teeth are in mesh with the first gear.

5. The process cartridge according to claim 1, wherein The second gear is kept in mesh with the third gear.

6. The process cartridge according to claim 1, wherein The processing box also includes a stirring frame and a fourth gear connected to one end of the stirring frame; the processing box also includes a first transfer gear and a second transfer gear connected between the second gear and the fourth gear, and the second gear can transmit the received driving force to the fourth gear through the first transfer gear and the second transfer gear in sequence.

7. The process cartridge according to claim 1, wherein A transmission gear is provided between the second gear and the third gear. The second gear can transmit the received driving force to the third gear through the transmission gear. The number of the transmission gears is an odd number.

8. The process cartridge according to claim 7, wherein: The number of the transmission gear is one.

9. The process cartridge according to claim 1, wherein The rotation speed of the surface of the powder feeding roller is less than or equal to the rotation speed of the surface of the developing roller.

10. The process cartridge according to claim 1, wherein The process cartridge further includes a guide protrusion for guiding the process cartridge for installation, wherein the guide protrusion is located at the first end of the frame in the first direction and is arranged adjacent to the coupling.

11. The process cartridge according to claim 10, wherein: The process cartridge further includes a gear cover disposed at the first end of the frame in the first direction, the gear cover may cover at least a portion of the coupling, and the guide protrusion is configured to protrude outward from an outer surface of the gear cover.

12. The process cartridge according to claim 10, wherein In the first direction, an outwardly protruding end of the guide protrusion is flush with an outwardly protruding end of the coupling member or is farther away from the second end of the frame than the outwardly protruding end of the coupling member.

13. The process cartridge according to claim 1, wherein The processing box also includes a gear cover arranged at the first end of the frame in the first direction, and the gear cover can cover at least a portion of the connecting member. In the first direction, the distance between the outward protruding end of the connecting member and the outer surface of the gear cover is P, wherein 2.5mm<P<5mm.

14. The process cartridge according to claim 13, wherein 3mm<P<4mm.

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