Developing box and processing box

Abstract

The utility model provides a developing cartridge and a processing cartridge, which comprise a cartridge body used for being combined with a drum assembly, the cartridge body comprises a shell, a developing part rotatably arranged on the shell, an end cover located at the longitudinal tail end of the shell and a driving force receiving part, and the driving force receiving part is used for receiving external driving force to directly or indirectly drive the developing part to rotate. The drum assembly comprises a drum shell and a photosensitive part rotatably arranged on the drum shell, when the box body is combined with the drum assembly, the photosensitive part is opposite to the developing part, and the end where the driving force receiving part is located is a driving end; the box body further comprises an acting part at least arranged at the driving end, and the acting part is used for abutting against the drum shell so that the box body can be positioned in the drum assembly. When observed in the left-right direction, the acting part is located in front of the rotation axis of the driving force receiving piece in the front-back direction, and at least part of the acting part is located above the rotation axis of the driving force receiving piece in the up-down direction. In the vertical direction, the part of the drum housing, which is abutted by the acting part, is located above the rotation axis of the photosensitive member.

Description

Technical Field

[0001] This utility model relates to the field of electronic imaging, and more particularly to a developing cartridge and a processing cartridge that can be detachably installed in an electronic imaging device. Background Technology

[0002] A developer cartridge for containing developer can be combined with a drum assembly to form a processing cartridge for supplying developer during development in an electro-imaging apparatus (hereinafter referred to as "the apparatus"). To ensure stable engagement between the developer cartridge and the drum assembly, the drum assembly typically has grooves along its length on both side walls for engagement with the developer cartridge, and the developer cartridge has a support portion that engages with these grooves. However, this type of drum assembly generally only accommodates one type of developer cartridge and cannot be adapted to multiple types. Therefore, to accommodate multiple developer cartridges, the prior art has implemented a universal design for the drum assembly, namely, increasing the size of the grooves so that the support portion on the developer cartridge can be accommodated regardless of its size.

[0003] However, when the size of the groove is increased, the smaller support part will not contact the groove, and the developing cartridge will move relative to the drum assembly. In this case, the end receiving the driving force will generate a large vibration due to the driving force. This vibration will make the developing cartridge move more easily, thereby increasing the distance between the developing element in the developing cartridge and the photosensitive element in the drum assembly, ultimately leading to reduced developing quality and defects such as blanks during developing. Utility Model Content

[0004] This utility model provides a developing cartridge and a processing cartridge to solve the above-mentioned technical problems. The specific solution is as follows:

[0005] A developing cartridge includes a housing for engagement with a drum assembly. The housing includes a shell, a developing element rotatably mounted on the shell, an end cap located at the longitudinal end of the shell, and a drive force receiver for receiving external drive force to directly or indirectly drive the developing element to rotate. The drum assembly includes a drum shell and a photosensitive element rotatably mounted on the drum shell. When the cartridge is engaged with the drum assembly, the photosensitive element is opposite to the developing element. The end where the drive force receiver is located is the drive end, and the end opposite the drive end in the left-right direction is the non-drive end. The cartridge also includes an action portion at least located at the drive end, which abuts against the drum shell to position the cartridge within the drum assembly. When viewed in the left-right direction, the action portion is located in front of the rotation axis of the drive force receiver in the front-back direction, and at least a portion of the action portion is located above the rotation axis of the drive force receiver in the up-down direction. In the up-down direction, the portion of the drum shell abutted by the action portion is located above the rotation axis of the photosensitive element.

[0006] The actuating portion includes at least one protrusion extending from the end cap or housing, and when the actuating portion includes multiple protrusions, each of the protrusions abuts against a different part of the drum housing.

[0007] The functional part includes a first protrusion, which has a first side surface, a connecting surface, and a second side surface. The connecting surface connects the first side surface and the second side surface. In the vertical direction, the first side surface is located above the second side surface. In the vertical direction, the first side surface and the second side surface gradually approach each other from back to front.

[0008] Both the first and second side surfaces are not parallel to the front-back direction.

[0009] The first side is parallel to the front-back direction, while the second side is not parallel to the front-back direction.

[0010] The functional part also includes a second protrusion, which is located above the first protrusion in the vertical direction.

[0011] The developing cartridge also includes a protective cover detachably attached to the cartridge body, the protective cover being used to protect the developing element; the protective cover is provided with a clearance portion, the clearance portion being used to avoid the action portion.

[0012] The processing cartridge includes a drum assembly and a developing cartridge as described above. The drum assembly also includes a receiving portion located within the drum housing, and the cartridge body is received by the receiving portion.

[0013] The drum housing includes a top plate having a first layer and a second layer, the first layer and the second layer extending in the left-right direction, and in the up-down direction, the top plate being above the photosensitive element and the first layer being above the second layer; a partition plate is provided between the first layer and the second layer in the left-right direction, the partition plate intersecting the top plate; a first side of the first protrusion is used to abut against the second layer below the second layer, so that the housing is positioned in the drum assembly.

[0014] The second layer is not parallel to the front-to-back direction; the distance between the second layer and the straight line (L3) in the vertical direction gradually decreases from front to back, and the straight line (L3) passes through the rotation axis of the photosensitive element in a direction parallel to the front-to-back direction.

[0015] This invention provides an action part that engages with the drum assembly at the drive end of the developing cartridge / cartridge. This action part abuts against the second layer plate of the drum assembly. In addition to preventing the developing cartridge / cartridge from moving due to the universality of the drum assembly and the vibration of the driving force, thus avoiding defects such as blank printing and improving developing quality and user experience, it can also prevent the drum assembly from being squeezed, deformed or broken, thereby enhancing the service life of the drum assembly. Attached Figure Description

[0016] Figure 1 This is a perspective view of the developing cartridge involved in this utility model.

[0017] Figure 2 This is a perspective view of the end cap of the developing cartridge involved in this utility model.

[0018] Figure 3 This is a perspective view of the drum assembly involved in this utility model.

[0019] Figure 4 The above utility model is a schematic diagram viewed from left to right when the end cap and drum assembly are not combined. Detailed Implementation

[0020] Figure 1 This is a perspective view of the developing cartridge involved in this utility model; Figure 2 This is a perspective view of the end cap of the developing cartridge involved in this utility model; Figure 3 This is a perspective view of the drum assembly involved in this utility model; Figure 4 The above utility model is a schematic diagram viewed from left to right when the end cap and drum assembly are not combined.

[0021] To make the description more accurate, the various orientations of the processing cartridge involved in this utility model are first defined based on the orientation of the developing cartridge. Figure 1 Based on the shown state, the length / vertical / axial direction of the developing cartridge 1 is defined as the left-right direction, the width / lateral direction of the developing cartridge 1 is defined as the front-back direction, and the height / vertical direction of the developing cartridge 100 is defined as the up-down direction.

[0022] like Figure 1 As shown, the developing cartridge 100 includes a cartridge body 1, which includes a housing 10, a developing element (not shown) rotatably mounted on the housing 10, and a driving force receiving element 4. The housing 10 can be used to contain the developer. The developing element is connected to an external photosensitive element 91 (e.g., Figure 2 (As shown) opposite, and supplies developer contained in housing 10 to photosensitive element 91; drive force receiving element 4 is used to receive drive force from the outside and transmit the drive force directly or indirectly to developing element to drive developing element to rotate about its rotation axis L1, drive force receiving element 4 has rotation axis L4, the rotation axis L1 and rotation axis L4 are parallel to the left and right directions.

[0023] In some embodiments, the housing 1 further includes a counting component 3 disposed at its longitudinal end, at least a portion of which is used to interact with a lever in the device to enable the device to identify the housing 1; the counting component 3 may be located at the same longitudinal end as the driving force receiver 4, or the counting component 3 and the driving force receiver 4 may be located at two separate longitudinal ends of the housing 1.

[0024] Furthermore, along the longitudinal direction, the end where the driving force receiving element 4 is located is the driving end, and the end opposite to the driving end in the left-right direction is the non-driving end.

[0025] like Figure 1 and Figure 2 As shown, the housing 1 also includes an end cap 21 located at the longitudinal end of the housing 10. Specifically, the end cap 21 is located at the driving end, and at least a portion of the driving force receiver 4 is exposed through the end cap 21 so that the driving force receiver 4 receives the driving force provided by the device. In some embodiments, the end cap 21 includes an end cap body 210 and a through hole 211 provided in the end cap body 210, the through hole 211 being used to expose at least a portion of the driving force receiver 4.

[0026] In some embodiments, the end cap 21 further includes a support portion 212 extending from the end cap body 210, the support portion 212 being received by the notch 907 described below, and in some embodiments, the support portion 212 abuts against the notch 907.

[0027] In this embodiment, the housing 1 also includes a fixing part disposed therein, which is used to fix the housing 1 to the drum assembly 9, that is, to position the housing 1 in the drum assembly 9 to prevent the housing 1 from moving (e.g., shifting or jumping) relative to the drum assembly 9.

[0028] In some implementations, such as Figure 1 , Figure 2 and Figure 4 As shown, the housing 1 includes an action part 6 disposed therein. The action part 6 is one embodiment of the fixing part. Preferably, the action part 6 is at least disposed at the driving end. The action part 6 is used to interact with the drum housing 90. Further, the action part 6 is used to abut against the drum housing 90. In the vertical direction, the part of the drum housing 90 that is abutted by the action part 6 is located above the rotation axis L2 of the photosensitive element.

[0029] In some implementations, such as Figure 2 As shown, the actuating part 6 is disposed on the end cap 21. In some embodiments, the actuating part 6 may also be disposed on the housing 10. When the actuating part 6 is disposed on the end cap 21, specifically, the actuating part 6 is connected to the end cap body 210. The actuating part 6 and the end cap body 210 may be integrally formed or separately formed. The actuating part 6 includes at least one protrusion extending from the end cap 21 or the housing 10. When the actuating part 6 includes multiple protrusions, each of the protrusions abuts against a different part of the drum housing 90.

[0030] In this embodiment, the actuating part 6 includes at least a first protrusion 61 extending from the end cap body 210. Preferably, when viewed in the left-right direction, the first protrusion 61 is located in front of the rotation axis L4 of the driving force receiver 4 in the front-back direction, and above the rotation axis L4 of the driving force receiver 4 in the up-down direction. The first protrusion 61 is arranged to avoid the rotation axis L4 of the driving force receiver 4 as much as possible, which can reduce the impact of the vibration of the driving force receiver 4 during rotation on the first protrusion 61. In the front-back direction, the first protrusion 61 is located in front of the support part 212, and above the support part 212 in the up-down direction.

[0031] Furthermore, the first protrusion 61 interacts with the drum housing 90 to securely mount the housing 1 to the drum assembly 9. Along the rear-to-front direction, the size of the first protrusion 61 gradually decreases in the vertical direction. Specifically, the first protrusion 61 has a first side surface 611, a connecting surface 613, and a second side surface 612. The connecting surface 613 connects the first side surface 611 and the second side surface 612. Along the vertical direction, the first side surface 611 is located above the second side surface 612. In the vertical direction, the first side surface 611 and the second side surface 612... 12 gradually approaches from back to front. For example, the first side 611 and the second side 612 are inclined relative to the front-back direction. That is to say, the first side 611 and the second side 612 are not parallel to the front-back direction. On the one hand, they can guide the installation of the box body 1. On the other hand, when the box body 1 is installed, the first protrusion 61 and the drum shell 90 gradually press against each other, so that the box body 1 is positioned. When the box body 1 is installed to the drum assembly 9, the first protrusion 61 is used to abut against the drum shell 90 so that the box body 1 is fixedly installed to the drum assembly 9.

[0032] In some embodiments, the first side 611 may also be configured to be non-parallel to the front-back direction, while the second side 612 is parallel to the front-back direction.

[0033] In some embodiments, the first side 611 may also be configured to be parallel to the front-back direction, and the second side 612 may be parallel to the front-back direction, or the second side 612 may not be parallel to the front-back direction.

[0034] In some embodiments, the actuating part 6 further includes a second protrusion 62 extending from the end cap body 210. In the vertical direction, the second protrusion 62 is located above the first protrusion 61. In the front-back direction, the foremost part of the second protrusion 62 is located behind the foremost part of the first protrusion 61. When viewed in the left-right direction, in the front-back direction, the second protrusion 62 is located in front of the rotation axis L4 of the driving force receiver 4. In the vertical direction, the second protrusion 62 is located above the rotation axis L4 of the driving force receiver 4. The second protrusion 62 is positioned to avoid the rotation axis L4 of the driving force receiver 4 as much as possible, which can reduce the impact of the vibration of the driving force receiver 4 during rotation on the second protrusion 62. In the front-back direction, the second protrusion 62 is located in front of the support part 212. In the vertical direction, the second protrusion 62 is located above the support part 212.

[0035] In some embodiments, the functional part 6 further includes a reinforcing member 614, which is used to prevent the first protrusion 61 from deforming in the left-right direction, so as to increase the strength of the first protrusion 61.

[0036] In some embodiments, in the vertical direction, a portion of the actuating part 6 may also be located below the support part 212.

[0037] like Figure 1 As shown, the developing cartridge 100 also includes a protective cover 80 detachably connected to the cartridge body 1. The protective cover 80 is used to protect components such as the developing unit. Before installing the developing cartridge 100, the protective cover 80 needs to be removed. In the front-rear direction, the protective cover 80 is located at the front of the cartridge body 1. In some embodiments, the protective cover 80 is provided with a clearance portion 801, which is used to avoid the action portion 6, so as to prevent the protective cover 80 from interfering with the action portion 6 and affecting the installation of the protective cover 80. In some embodiments, the clearance portion 801 is set as a through hole, and the action portion 6 is exposed; or, the clearance portion 801 is set as a groove that mates with the action portion 6, and the action portion 6 is covered.

[0038] like Figure 3 and Figure 4 As shown, the drum assembly 9 is detachably coupled to the cartridge 1. The drum assembly 9 includes a drum housing 90, a photosensitive element 91 rotatably disposed on the drum housing 90, and a receiving portion 900 located within the drum housing 90. The photosensitive element 91 is rotatable about its rotation axis L2, which is parallel to the left-right direction. When the developing cartridge 100 is removed from its protective cover 80 and installed into the drum assembly 9, the photosensitive element 91 faces the developing element and is used to carry the developer supplied by the developing element to develop the electrostatic latent image formed on its circumferential surface. The receiving portion 900 is used to receive the cartridge 1. Further, the drum assembly 9 / drum housing 90 includes a base plate 901 and first walls 902 opposite each other in the front-rear direction (e.g., ...). Figure 4As shown, the base plate 901, first wall 902, second wall 903, third wall 904, and fourth wall 905, which are opposite each other in the left-right direction, together form a receiving portion 900; the drum assembly 9 also includes a notch 907 located on the third wall 904 and fourth wall 905, the notch 907 for receiving at least a portion of the end cap 21; the drum assembly 9 / drum housing 90 also includes a top plate 906, which is located above the photosensitive element 91 in the vertical direction, and the top plate 906 is used to interact with at least a portion of the first protrusion 61 so that the housing 1 is stably installed in the drum assembly 9. After the housing 1 is installed into the drum assembly 9, the first protrusion 61 engages with the drum housing 90 above the notch 907.

[0039] Furthermore, the top plate 906 includes a first layer plate 9061 and a second layer plate 9062 extending in the left-right direction. In the vertical direction, the first layer plate 9061 is located above the second layer plate 9062. A partition plate 9063 is provided between the first layer plate 9061 and the second layer plate 9062 in the left-right direction. The partition plate 9063 intersects with the top plate 906. The partition plate 9063 can be used to improve the strength of the first layer plate 9061 and the second layer plate 9062 and prevent the first layer plate 9061 and the second layer plate 9062 from deforming or breaking.

[0040] Furthermore, the second layer plate 9062 is inclined relative to the front-back direction, that is, the second layer plate 9062 is not parallel to the front-back direction, such as... Figure 4 As shown, a straight line L3 is drawn along a direction parallel to the front-back direction, passing through the rotation axis L2 of the photosensitive element 91. The distance between the second layer plate 9062 and this straight line in the vertical direction gradually decreases from front to back.

[0041] In this embodiment, the second layer plate 9062 interacts with the first side surface 611. That is, when the housing 1 is installed onto the drum assembly 9, the first side surface 611 abuts against the second layer plate 9062 from below to prevent the housing 1 from moving upwards. Simultaneously, the inclined second layer plate 9062 also limits the first protrusion 61 in the front-rear direction, restricting the housing 1 from moving backwards. In other words, the inclined second layer plate 9062 serves to position the housing 1. Compared to the first protrusion 61 abutting against the first layer plate 9061, in this embodiment, the first protrusion 61 abuts against the second layer plate 9062 from below, which avoids the first layer plate 9061 from deforming or breaking due to insufficient strength.

[0042] In some embodiments, the second layer plate 9062 is used to interact with the second side surface 612, that is, when the housing 1 is mounted to the drum assembly 9, the second side surface 612 abuts against the second layer plate 9062.

[0043] In some embodiments, when the housing 1 is installed onto the drum assembly 9, the second side 612 abuts against the second layer plate 9062, and the first side 611 contacts or abuts against the first layer plate 9061.

[0044] Furthermore, in some embodiments, when the housing 1 is installed onto the drum assembly 9, the second side 612 abuts against the second layer plate 9062 above the second layer plate 9062, and the first side 611 also abuts against the first layer plate 9061 below the first layer plate 9061; that is, when the housing 1 is installed onto the drum assembly 9, the first protrusion 61 is clamped by the first layer plate 9061 and the second layer plate 9062. In this way, the housing 1 can be better fixed to prevent the housing 1 from detaching from the drum assembly 9 when the support 212 and the notch 907 are not in contact in the vertical direction, thereby avoiding the defect of blank printing.

[0045] In some embodiments, the first protrusion 61 may also abut against the lower part of the first layer plate 9061.

[0046] In some embodiments, when the housing 1 is installed onto the drum assembly 9, the top plate 906 can also abut against the second protrusion 62 in the vertical direction to prevent the housing 1 from moving upward, thereby positioning the housing 1.

[0047] In some embodiments, when the housing 1 is installed onto the drum assembly 9, the top plate 906 can also abut against the second protrusion 62 in the front-rear direction to restrict the forward movement of the housing 1 in the front-rear direction, so as to prevent the housing 1 from moving forward too much and affecting the installation of the housing 1, and also to avoid damage to the housing 1 / drum housing 90 caused by excessive compression between the housing 1 and the drum housing 90 due to excessive forward movement of the housing 1.

[0048] The housing 1 and the drum assembly 9 are combined to form a processing box, which is detachably installed into office equipment such as printers or copiers.

[0049] The beneficial effects of the functional part 6 involved in this utility model are as follows:

[0050] 1. By increasing the size of the notch 907, the notch 907 can accommodate support parts 212 of different sizes, so as to realize the universality of the drum assembly 9. When the support part 212 cannot abut against the upper and lower side walls of the notch 907, the cartridge 1 can still be positioned by the abutment of the positioning part 6 against the top plate 906 to avoid defects such as blank printing, thereby improving the developing quality.

[0051] 2. The function part 6 can prevent the box body 1 from moving in the drum assembly 9 due to insufficient manufacturing precision of the notch 907 and the support part 212.

[0052] 3. The first protrusion 61 of the action part 6 is configured to abut against the second layer plate 9062 of the top plate 906, which can prevent the first layer plate 9061 from deforming or breaking, thereby enhancing the service life of the drum assembly 9.

[0053] In addition, the functional part 6 can be set in other positions according to design requirements, as long as it can abut against the second layer plate 9062 and play the role of preventing the box 1 from moving in the drum assembly 9.

[0054] This invention provides an action part that engages with the drum assembly at the drive end of the developing cartridge / cartridge. This action part abuts against the second layer plate of the drum assembly. In addition to preventing the developing cartridge / cartridge from moving due to the universality of the drum assembly and the vibration of the driving force, thus avoiding defects such as blank printing and improving developing quality and user experience, it can also prevent the drum assembly from being squeezed, deformed or broken, thereby enhancing the service life of the drum assembly.

Claims

1. A developing cartridge, comprising a cartridge body for engagement with a drum assembly, the cartridge body including a housing, a developing element rotatably disposed on the housing, an end cap located at a longitudinal end of the housing, and a drive force receiver for receiving an external drive force to directly or indirectly drive the developing element to rotate, the drum assembly including a drum housing and a photosensitive element rotatably disposed on the drum housing, wherein when the cartridge body is engaged with the drum assembly, the photosensitive element is opposite to the developing element, characterized in that... The end where the driving force receiving device is located is the driving end, and the end opposite to the driving end in the left-right direction is the non-driving end. The housing also includes at least one functional part disposed at the drive end, the functional part being used to abut against the drum housing so that the housing is positioned in the drum assembly; When viewed in the left-right direction, the active part is located in front of the rotation axis of the driving force receiver in the front-back direction, and at least a portion of the active part is located above the rotation axis of the driving force receiver in the up-down direction. Along the vertical direction, the part of the drum housing that is abutted by the actuating part is located above the rotation axis of the photosensitive element.

2. The developing cartridge according to claim 1, characterized in that, The actuating portion includes at least one protrusion extending from the end cap or housing, and when the actuating portion includes multiple protrusions, each of the protrusions abuts against a different part of the drum housing.

3. The developing cartridge according to claim 2, characterized in that, The functional part includes a first protrusion, which has a first side surface, a connecting surface, and a second side surface. The connecting surface connects the first side surface and the second side surface. In the vertical direction, the first side surface is located above the second side surface. In the vertical direction, the first side surface and the second side surface gradually approach each other from back to front.

4. The developing cartridge according to claim 3, characterized in that, Both the first and second side surfaces are not parallel to the front-back direction.

5. The developing cartridge according to claim 3, characterized in that, The first side is parallel to the front-back direction, while the second side is not parallel to the front-back direction.

6. The developing cartridge according to claim 3, characterized in that, The functional part also includes a second protrusion, which is located above the first protrusion in the vertical direction.

7. The developing cartridge according to any one of claims 3-6, characterized in that, The developing cartridge also includes a protective cover detachably attached to the cartridge body, the protective cover being used to protect the developing element; The protective cover is provided with a clearance part, which is used to avoid the action part.

8. A processing box, characterized in that, The processing cartridge includes a drum assembly and a developing cartridge as claimed in any one of claims 3-7, wherein the drum assembly further includes a receiving portion located within the drum housing, and the cartridge is received by the receiving portion.

9. The processing box according to claim 8, characterized in that, The drum housing includes a top plate having a first layer and a second layer, the first layer and the second layer extending in the left-right direction, and in the up-down direction, the top plate is located above the photosensitive element, and the first layer is located above the second layer. A partition plate is provided between the first layer plate and the second layer plate in the left-right direction, and the partition plate intersects with the top plate; The first side of the first protrusion is used to abut against the second layer plate below the second layer plate so that the housing is positioned in the drum assembly.

10. The processing box according to claim 9, characterized in that, The second layer is not parallel to the front-to-back direction; The distance between the second layer plate and the straight line (L3) in the vertical direction gradually decreases from front to back, and the straight line (L3) passes through the rotation axis of the photosensitive element in a direction parallel to the front-back direction.

Images