Developing cartridge

Abstract

The developing box provided by the utility model comprises a developing shell, a developing roller and a driving end cover, wherein a developing agent is accommodated in the developing shell; the developing roller is rotatably arranged in the developing shell; the driving end cover is connected with the developing shell; the developing box further comprises a counting assembly, the counting assembly comprises a counting gear with a first position and a second position, when the counting gear is located at the first position, counting of the counting assembly is completed, and when the counting gear is located at the second position, the counting gear is reset; the counting gear comprises a counting gear main body, a supporting disc and a poke part arranged on the supporting disc, the driving end cover further comprises a containing part, the poke part is poked to enable the counting gear to move from a first position to a second position, and the containing part is arranged to be formed by sinking towards the radial center in the radial direction of the counting gear. The poke part is positioned in the accommodating part; therefore, when the poke part is poked, the poke part cannot interfere with other parts of the developing box, and the difficulty of poke the poke part is reduced.

Description

Developing box Technical Field

[0001] This utility model relates to the field of electrophotographic imaging technology, and in particular to a processing box that can be detachably installed on an imaging device. Background Technology

[0002] A developing cartridge is a printing consumable that can be detachably installed into an imaging device. The developing cartridge includes a counting component that works in conjunction with the imaging device. Through this interaction, the imaging device can detect information such as the lifespan and condition of the developing cartridge. The counting component includes a movable part; moving this movable part resets the counting component after it has finished counting, allowing it to count again. However, during the reset process, moving the movable part is subject to many restrictions. In other words, it is prone to interference with other components of the developing cartridge, making the movement of the movable part more difficult and increasing the complexity of the counting component reset process. Summary of the Invention

[0003] The developing cartridge provided by this utility model can solve at least one of the above-mentioned technical problems, and the specific technical solution is as follows:

[0004] A developing cartridge, detachably mounted to an imaging device equipped with a trigger lever, the developing cartridge comprising:

[0005] The developer housing contains the developer.

[0006] The developing roller is rotatably disposed in the developing housing. The developing roller is used to transport the developer to the outside of the developing cartridge. The developing roller rotates about a first rotation axis, and the direction parallel to the first rotation axis is the first direction.

[0007] The drive end cap connects to the developing housing;

[0008] A driving force receiver for receiving driving force from an imaging device, and at least a portion of which is exposed through a driving end cap;

[0009] The counting component includes a counting gear having a first position and a second position. When the counting gear is in the first position, the counting component completes counting. When the counting gear is in the second position, the counting gear resets. The counting gear is driven by a driving force and rotates about a second rotation axis in a rotation direction. The first rotation axis and the second rotation axis are parallel to each other. The counting gear includes a counting gear body and a support disk arranged in the first direction.

[0010] The drive end cover also includes a receiving portion, and the counting gear also includes a movable portion disposed on the support plate. Moving the movable portion allows the counting gear to move from a first position to a second position. Along the radial direction of the counting gear, the receiving portion is configured to be recessed toward the radial center, and the movable portion is located in the receiving portion.

[0011] The drive end cover also includes a notch portion. Along a first direction, the notch portion and the receiving portion are arranged along the first direction. When the counting gear is in the first position, the movable portion is exposed through the notch portion.

[0012] The developing cartridge further includes a driving force transmission assembly, which includes a first driving force transmitter, a second driving force transmitter, and a fourth driving force transmitter. At least one of the first and second driving force transmitters is coaxially arranged with the driving force receiver. The fourth driving force transmitter is used to receive driving force directly or indirectly from the first or second driving force transmitter.

[0013] The counting gear also includes a driving force receiving part disposed on the counting gear body. The driving force receiving part is used to receive driving force from the fourth driving force transmitting member. The movable part and the driving force receiving part are arranged along the first direction, and the movable part and the fourth driving force transmitting member are staggered along the first direction.

[0014] The counting gear also includes a tooth-deficient portion disposed along the rotation direction in the main body of the counting gear. The driving force receiving portion and the tooth-deficient portion are arranged along the rotation direction. The tooth-deficient portion is used to cut off the transmission of driving force of the counting gear. Along the rotation direction of the counting gear, the movable range of the movable portion is greater than or equal to the extension range of the tooth-deficient portion.

[0015] The counting gear also includes a pushing part and a receiving plate disposed on the support plate. Both the pushing part and the receiving plate protrude from the support plate along the second rotation axis in a direction away from the main body of the counting gear. Furthermore, the receiving plate and the pushing part are arranged along the radial direction of the counting gear.

[0016] The drive end cover is also provided with an abutting part for abutting the abutting plate. Along the rotation direction of the counting gear, the counting gear is held in the first position by the mutual abutting between the abutting plate and the abutting part.

[0017] The abutting plate is provided with a guide surface that is inclined relative to the second rotation axis, and the abutting part is provided with a guided surface that is inclined relative to the second rotation axis. Along the rotation direction of the counting gear, the guide surface is used to guide the guided surface / abutting part.

[0018] The abutting plate and the pushing part are connected along the radial direction of the counting gear.

[0019] The guiding surface and the guided surface are parallel to each other.

[0020] Compared with the prior art, the developing cartridge provided by this utility model has a movable part for the counting gear. Moving the movable part can move the counting gear from the first position to the second position. The drive end cover is provided with a notch. When the counting component finishes counting, or when the counting gear is in the first position, the movable part is exposed through the notch. With this setting, when resetting the counting gear, the movable part can be moved directly without disassembling the components in the developing cartridge. This allows the counting gear to be reset quickly and easily. Attached Figure Description

[0021] Figure 1 is a perspective view of the developing cartridge involved in this utility model.

[0022] Figure 2 is an exploded view of some components of the drive end of the developing cartridge involved in this utility model.

[0023] Figure 3 is a perspective view of the counting gear of the developing cartridge involved in this utility model.

[0024] Figure 4 is a perspective view of the drive end cover involved in this utility model.

[0025] Figure 5A is a perspective view of the driving end of the developing cartridge when the counting gear is in the first position.

[0026] Figure 5B is a schematic diagram of the counting gear of the developing cartridge of this utility model when it is in the first position and the counting gear abuts against the abutting part.

[0027] Figure 6 is a perspective view of the drive end of the developing cartridge of the present invention when the counting gear is in the second position. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0029] The developing cartridge 100 is a printing consumable that can be detachably installed on an imaging device. As shown in Figure 1, the developing cartridge 100 includes a developing housing 1 and a developing roller 2 rotatably disposed in the developing housing 1. The developing roller 2 rotates about a first rotation axis L2. The developing roller 2 is used to transport the developer contained in the developing housing 1 to the outside of the developing cartridge 100. For example, the developing roller 2 transports the developer to a photosensitive drum arranged opposite to it, so that the electrostatic latent image formed on the photosensitive drum is developed. The developing cartridge 100 also includes a driving force receiving member 3 for receiving driving force from the imaging device. The driving force is used to directly or indirectly drive the developing roller 2 to rotate. The direction parallel to the first rotation axis L2 is the first direction.

[0030] The developing cartridge 100 also includes a powder feeding roller 6 (as shown in Figure 2) and a stirring member (not shown) rotatably disposed in the developing housing 1. The powder feeding roller 6 and the stirring member also rotate under the driving force. The stirring member is used to stir the developer and deliver the developer to the powder feeding roller. The powder feeding roller 6 is used to deliver the developer to the developing roller 2.

[0031] As shown in Figure 2, the developing cartridge 100 also includes a counting component 4, which is used to cooperate with a trigger rod provided in the imaging device, so that the imaging device can detect the developing cartridge 100. For example, the imaging device can know whether the developing cartridge 100 is brand new, and the imaging device can also know the number of images that can be captured in the developing cartridge 100.

[0032] As shown in Figures 2 and 3, the counting assembly 4 includes a counting gear 41, a forced pusher 42, a counting element 43, and a first elastic element 44. The counting gear 41 can be driven by a driving force from the driving force receiving element 3 and rotates along the rotation direction r about a second rotation axis L41. The first rotation axis L2 is parallel to the second rotation axis L41. The counting gear 41 includes a counting gear body 41a, a support disk 41b, and a forced pusher 41e disposed on the support disk 41b. The counting gear body 41a and the support disk 41b are arranged along a first direction. The forced pusher 41e... 1e protrudes from the support plate 41b in a direction away from the counting gear body 41a. Further, the pushing part 41e extends along the rotation direction r. One end of the forced pusher 42 is driven by the counting gear 41 / support plate 41b, and the other end is connected to the counting member 43. During the rotation of the counting gear 41, the pushing part 41e abuts against the forced pusher 42, forcing the forced pusher 42 to move in a direction intersecting with the first direction, thereby causing the counting member 43 to also move in a direction intersecting with the first direction, so that the counting member 43 can trigger the trigger rod.

[0033] As shown in Figures 2 and 4, the developing cartridge 100 further includes a drive end cover 11. The drive end cover 11 includes a drive end cover body 110, a first exposure hole 111, a second exposure hole 112, and a sub-cover 113. At least a portion of the driving force receiving member 3 is exposed through the first exposure hole 111, and a portion of the forced push member 42 is exposed through the second exposure hole 112 and connected to the counter member 43. The sub-cover 113 is used to protect the counter member 43. Specifically, when viewed along the first direction, a portion of the counter member 43 is covered by the sub-cover 113.

[0034] In some embodiments, the drive end cap 11 is detachably connected to the developing housing 1.

[0035] One end of the first elastic member 44 is connected to the forced push member 42, and the other end of the first elastic member 44 is connected to the drive end cover 11. The first elastic member 44 is used to limit the range of motion of the forced push member 42 and to force the forced push member 42 / counter member 43 to reset in a direction away from the trigger rod.

[0036] As shown in Figure 2, the developing cartridge 100 further includes a driving force transmission assembly 5 for transmitting driving force. The driving force transmission assembly 5 includes a first driving force transmission member 51, a second driving force transmission member 52, a developing roller driving gear 53, a powder feeding roller driving gear 54, a third driving force transmission member 55, and a fourth driving force transmission member 56. In some embodiments, at least one of the first driving force transmission member 51 and the second driving force transmission member 52 is coaxially arranged with the driving force receiving member 3.

[0037] The developing roller drive gear 53 is used to receive driving force from the first driving force transmitter 51 or the second driving force transmitter 52 to drive the developing roller 2 to rotate; the powder feeding roller drive gear 54 is used to receive driving force from the first driving force transmitter 51 or the second driving force transmitter 52 to drive the powder feeding roller to rotate; the third driving force transmitter 55 is used to receive driving force from the first driving force transmitter 51 or the second driving force transmitter 52, so that the driving force can be transmitted to the fourth driving force transmitter 56, the fourth driving force transmitter 56 is used to drive the stirring component to rotate, and can also transmit the driving force to the counting gear 41.

[0038] In some embodiments, only one of the first driving force transmission member 51 or the second driving force transmission member 52 is provided.

[0039] In some embodiments, the developing cartridge 100 may not have a third driving force transmission member 55 as an intermediate transmission member. That is, the fourth driving force transmission member 56 may directly receive driving force from the first driving force transmission member 51 or the second driving force transmission member 52.

[0040] In some embodiments, the developing cartridge 100 may also be provided with other intermediate transmission components for transmitting driving force, as long as the driving force can be transmitted to the component that requires the driving force.

[0041] As shown in Figures 2 and 3, the counting gear 41 further includes a driving force receiving part 41c and a tooth-deficient part 41d disposed on the counting gear body 41a along the rotation direction r. The driving force receiving part 41c and the tooth-deficient part 41d are arranged along the rotation direction r. The driving force receiving part 41c is used to receive driving force, so that the counting gear 41 is driven to rotate. The tooth-deficient part 41d is used to cut off the driving force transmitted to the counting gear 41, so that the counting gear 41 cannot be driven to rotate. In some specific embodiments, the driving force receiving part 41c is set as a gear. When the driving force receiving part 41c meshes with the fourth driving force transmitting member 56, the driving force is transmitted to the counting gear 41, and the counting gear 41 rotates along the rotation direction r. When the tooth-deficient part 41d is opposite to the fourth driving force transmitting member 56, the driving force cannot be transmitted to the counting gear 41.

[0042] As shown in Figures 5A, 5B, and 6, along the rotation direction r of the counting gear 41, the counting gear 41 has a first position and a second position. When the counting gear 41 is in the first position, the counting component 4 completes counting. When the counting gear 41 is in the second position, the counting gear 41 resets, and the counting component 4 can count again. The counting gear 41 also includes a contact plate 41f disposed on the support plate 41b. The contact plate 41f protrudes from the support plate 41b along the second rotation axis L41 in a direction away from the counting gear body 41a. The contact plate 41f is inclined relative to the second rotation axis L41. The drive end cover 11 is provided with an inclined guide surface 41f1; the drive end cover 11 is provided with an abutting part 114 for abutting against the abutting plate 41f. The abutting part 114 is provided on the inner side wall of the drive end cover 11 facing the developing roller 2. The abutting part 114 is provided with a guided surface 114a that is inclined relative to the second rotation axis L41. Along the rotation direction r of the counting gear 41, the abutting plate 41f and the abutting part 114 abut against each other, so that the counting gear 41 is held in the first position. The guide surface 41f1 is used to cooperate with the guided surface 114a, so that the abutting part 114 can more easily pass over the abutting plate 41f and abut against the abutting plate 41f.

[0043] In some embodiments, the abutting plate 41f and the pushing part 41e are arranged along the radial direction of the counting gear 41. In this way, when the abutting plate 41f abuts the abutting part 114, the pushing part 41e can also restrict the abutting part 114 along the radial direction of the counting gear 41, further preventing the abutting part 114 from disengaging from the abutting plate 41f, thereby making the counting gear 41 more stably maintained in the first position. In some preferred embodiments, the abutting plate 41f and the pushing part 41e are connected along the radial direction of the counting gear 41.

[0044] In some embodiments, the guiding surface 41f1 and the guided surface 114a are parallel to each other, which is beneficial for the guiding surface 41f1 to guide the abutment portion 114 / guided surface 114a.

[0045] The counting gear 41 is also provided with a connecting part 41h located on the counting gear body 41a. The counting assembly 4 also includes a second elastic member 45. One end of the second elastic member 45 is connected to the drive end cover 11, and the other end of the second elastic member 45 is connected to the connecting part 41h. The second elastic member 45 is used to force the counting gear 41 to rotate in the rotation direction r. Specifically, when the driving force receiving part 41c disengages from the fourth driving force transmitting member 56, or when the missing tooth part 41d is opposite to the fourth driving force transmitting member 56, under the elastic force of the second elastic member 45, the counting gear 41 can continue to rotate in the rotation direction r, ensuring that the abutting part 114 abuts against the abutted plate 41f, so that the counting gear 41 reaches the first position, and at the same time, it can reduce the angle that the counting gear 41 needs to rotate during the reset process.

[0046] The counting gear 41 also includes a movable part 41g disposed on the support disk 41b. Moving the movable part 41g can move the counting gear 41 from the first position to the second position. Along the first direction, the movable part 41g, the driving force receiving part 41c, and the connecting part 41h are arranged in sequence. Specifically, along the first direction, at least the movable part 41g and the fourth driving force transmission member 56 are staggered. That is to say, during the process of the driving force receiving part 41c receiving the driving force, at least the movable part 41g will not interfere with the driving force receiving part 41c, so that the driving force is stably transmitted.

[0047] The drive end cover 11 also includes a notch 115, a receiving portion 116, and an indicator 117. Along the first direction, the notch 115 and the receiving portion 116 are arranged adjacent to each other. A part of the counting gear 41 is exposed through the notch 115. Specifically, when the counting component 4 finishes counting, or when the counting gear 41 is in the first position, the movable portion 41g is exposed through the notch 115, which facilitates the movement of the movable portion 41g. Along the radial direction of the counting gear 41, the receiving portion 116 is configured to be recessed toward the radial center. The receiving portion 116 is used to accommodate the actuating element for actuating the movable portion 41g. In other words, the movable portion 41g is located in the receiving portion 116. This avoids interference between the actuating element and other components, thereby reducing the difficulty of actuating the movable portion 41g.

[0048] In some embodiments, along the rotation direction of the counting gear 41, the movable range of the movable part 41g is greater than or equal to the extension range of the toothed part 41d. With this arrangement, in the second position, the driving force receiving part 41c of the counting gear 41 can re-engage with the fourth driving force transmitting member 56.

[0049] In some embodiments, the actuating element may be a component disposed in the developing cartridge 100, a component disposed in the imaging device, or a component external to the developing cartridge 100 / imaging device, such as a user's hand.

[0050] The indicator 117 is disposed in the receiving portion 116 formed by the drive end cover 11 / drive end cover body 110. Specifically, the indicator 117 is disposed on the side wall 116a of the receiving portion 116. The indicator 117 is used to cooperate with the movable portion 41g to indicate that the counting gear 41 has reached the second position, that is, the counting component 4 / counting gear 41 has been reset. Specifically, at least a portion of the indicator 117 coincides with the movable portion 41g along the first direction. In some embodiments, the indicator 117 is configured to be recessed / protruded from the side wall 116a along a direction intersecting the first direction. In other embodiments, the indicator 117 may also be configured as a mark that can be clearly identified by the naked eye, such as a specific symbol, a specific text, and a different color.

[0051] [Beneficial Effects]

[0052] Compared with the prior art, the developing cartridge 100 provided by this utility model has the following beneficial effects:

[0053] Firstly, the counting gear 41 of the developing cartridge 100 is provided with a movable part 41g. Moving the movable part 41g can move the counting gear 41 from a first position to a second position. The drive end cover 11 is provided with a notch 115. When the counting component 4 finishes counting, or when the counting gear 41 is in the first position, the movable part 41g is exposed through the notch 115. With this arrangement, when resetting the counting gear 41, the movable part 41g can be moved directly without disassembling the components in the developing cartridge 100. This allows the counting gear 41 to be reset quickly and easily.

[0054] Secondly, the drive end cover 11 is also provided with a receiving portion 116 adjacent to the notch portion 115 along the first direction. Along the radial direction of the counting gear 41, the receiving portion 116 is configured to be recessed toward the radial center. With this configuration, when it is necessary to move the movable portion 41g, the moving member can enter the receiving portion 116 without interfering with other components of the developing cartridge 100, thus reducing the difficulty of moving the movable portion 41g.

Claims

1. A developing cartridge, detachably mounted to an imaging device equipped with a trigger lever, characterized in that, The developing cartridge includes: The developer housing contains the developer. A developing roller, rotatably disposed within a developing housing, is used to deliver developer to the outside of the developing cartridge. The developing roller rotates about a first rotation axis, the direction parallel to the first rotation axis being a first direction. A drive end cap is connected to the developing housing. A drive force receiver is used to receive drive force from the imaging device, and at least a portion of it is exposed through the drive end cap. A counting assembly includes a counting gear having a first position and a second position. When the counting gear is in the first position, the counting assembly completes counting; when the counting gear is in the second position, the counting gear resets. The counting gear is driven by a drive force and rotates about a second rotation axis in a rotational direction. The first rotation axis and the second rotation axis are parallel to each other. The counting gear includes a counting gear body and a support disk arranged along the first direction. The drive end cap also includes a receiving portion. The counting gear also includes a movable portion disposed on the support disk. Mobilizing the movable portion allows the counting gear to move from the first position to the second position. Along the radial direction of the counting gear, the receiving portion is configured to be recessed toward the radial center, and the movable portion is located within the receiving portion.

2. The developing cartridge according to claim 1, characterized in that, The drive end cover also includes a notch portion. Along a first direction, the notch portion and the receiving portion are arranged along the first direction. When the counting gear is in the first position, the movable portion is exposed through the notch portion.

3. The developing cartridge according to claim 2, characterized in that, The developing cartridge further includes a driving force transmission assembly, which includes a first driving force transmitter, a second driving force transmitter, and a fourth driving force transmitter. At least one of the first and second driving force transmitters is coaxially arranged with the driving force receiver. The fourth driving force transmitter is used to receive driving force directly or indirectly from the first or second driving force transmitter. The counting gear further includes a driving force receiving part disposed on the counting gear body, which is used to receive driving force from the fourth driving force transmitter. The movable part and the driving force receiving part are arranged along a first direction, and the movable part and the fourth driving force transmitter are staggered along the first direction.

4. The developing cartridge according to claim 3, characterized in that, The counting gear also includes a tooth-deficient portion disposed along the rotation direction in the main body of the counting gear. The driving force receiving portion and the tooth-deficient portion are arranged along the rotation direction. The tooth-deficient portion is used to cut off the transmission of driving force of the counting gear. Along the rotation direction of the counting gear, the movable range of the movable portion is greater than or equal to the extension range of the tooth-deficient portion.

5. The developing cartridge according to claim 2, characterized in that, The counting gear also includes a pushing part and a contact plate disposed on the support plate. Both the pushing part and the contact plate protrude from the support plate along the second rotation axis in a direction away from the main body of the counting gear. Furthermore, the contact plate and the pushing part are arranged along the radial direction of the counting gear. The drive end cover is also provided with a contact part for contacting the contact plate. Along the rotation direction of the counting gear, the counting gear is held in the first position by the mutual contact between the contact plate and the contact part.

6. The developing cartridge according to claim 5, characterized in that, The abutting plate is provided with a guide surface that is inclined relative to the second rotation axis, and the abutting part is provided with a guided surface that is inclined relative to the second rotation axis. Along the rotation direction of the counting gear, the guide surface is used to guide the guided surface / abutting part.

7. The developing cartridge according to claim 5, characterized in that, The abutting plate and the pushing part are connected along the radial direction of the counting gear.

8. The developing cartridge according to claim 6, characterized in that, The guiding surface and the guided surface are parallel to each other.

Images