Developing box

Abstract

The utility model relates to a developing box which comprises a developing shell, a developing roller and a chip bracket for mounting a chip, and the developing shell is provided with a cavity for accommodating a developing agent. The developing housing has a front end and a rear end in a mounting direction of the developing cartridge. The developing roller is rotatably mounted on the developing housing. The developing shell is provided with a first end and a second end in the axial direction of the developing roller. The chip support is arranged at the first end of the developing shell. The developing box further comprises an elastic forced pushing piece, the elastic forced pushing piece is installed on the bottom face of the developing shell, and the elastic forced pushing piece is closer to the rear end of the developing shell relative to the front end of the developing shell. After the developing box is installed on the drum box, the elastic pushing piece can make contact with the drum box shell so as to force the rear end of the developing shell to move in the direction away from the drum box shell. The chip support of the developing box is simple in structure, the matching of a drum box and imaging equipment cannot be changed when the developing box moves, and good printing quality can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a developing box for laser imaging equipment. BACKGROUND

[0002] The processing box is an essential printing consumable in the laser imaging equipment. The processing box usually includes a developing unit and a photosensitive unit. The developing unit has a developing roller, and the photosensitive unit has a photosensitive drum. When the processing box is working, the developer on the developing roller is transferred from the developing roller to the photosensitive drum under the action of electric charge.

[0003] Chinese patent document CN113110002A discloses a developing box. One end of the developing box has a chip support. The chip support is movable relative to the housing of the developing box between a first position and a second position. Since the developing box is installed into the imaging equipment, the chip support needs to avoid or bypass the protruding structure in the imaging equipment. The chip support can pass over the protruding structure when it is in the first position. When the developing box is installed into the imaging equipment, the electrical contact surface of the chip installed on the chip support in the developing box needs to be in contact with the electrical contact in the imaging equipment. The chip support needs to be moved to the second position by the support structure in the imaging equipment, so that the electrical contact surface of the chip is in contact with the electrical contact in the imaging equipment. This chip support structure is complex and difficult to manufacture.

[0004] Chinese patent document CN118169988A discloses a developing box. The developing box includes a movable piece as a force receiving part. When the developing box is installed into the imaging equipment, the force receiving part can be in abutment with the support part in the imaging equipment, so that the force receiving part drives the whole developing box to move in the direction of making the electrical contact surface in contact with the electrical contact in the imaging equipment. In this technical solution, the movable piece drives the whole developing box to move by abutting against the support part inside the imaging equipment. Since the developing box is installed into the drum box, the developing box may drive the drum box to move when it moves. The movement of the drum box will cause the photosensitive drum to move, and the gap between the photosensitive drum and the transfer roller will become larger, thereby affecting the transfer of the developer. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a developing box. The developing box of the utility model is simpler in structure while meeting the printing quality.

[0006] To achieve the above object, the developing cartridge comprises a developing housing, a developing roller and a chip support for mounting a chip, the developing housing has a cavity for containing a developing agent. Along the mounting direction of the developing cartridge, the developing housing has a front end and a rear end. The developing roller is rotatably mounted on the developing housing. Along the axial direction of the developing roller, the developing housing has a first end and a second end. The chip support is arranged at the first end of the developing housing and is fixed relative to the developing housing. The developing cartridge further comprises an elastic pushing member, the elastic pushing member is mounted on the bottom surface of the developing housing and is closer to the rear end of the developing housing relative to the front end of the developing housing. When the developing cartridge is mounted to a drum cartridge, the elastic pushing member can contact the drum cartridge housing to force the rear end of the developing housing to move away from the drum cartridge housing. The developing cartridge can be detachably mounted into the drum cartridge, and the drum cartridge comprises a drum cartridge housing and a photosensitive drum rotatably mounted on the drum cartridge housing.

[0007] When the developing cartridge is mounted, the rear end of the developing cartridge can rotate and move around the roller shaft of the developing roller to avoid or pass over the protruding structure in the image forming device, and the developing cartridge can return to the initial position under the action of the elastic pushing member to contact the electrical contact in the image forming device. The chip support structure of the developing cartridge is simple, and the cooperation between the drum cartridge and the image forming device is not changed when the developing cartridge moves, so that good printing quality can be ensured.

[0008] In an embodiment, the elastic pushing member comprises a moving block and an elastic member, the elastic member is arranged between the developing housing and the moving block, and one end of the moving block can contact the drum cartridge housing when the developing cartridge is mounted to the drum cartridge. The reciprocating movement of the moving block provides space for the chip support to pass over the protruding structure of the image forming device, and ensures that the electrical contact surface of the chip can be in good contact with the electrical contact in the image forming device after the developing cartridge is mounted.

[0009] In an embodiment, the moving block has a limiting hook, the developing housing is provided with a sliding groove, and the limiting hook is located in the sliding groove to limit the movement range of the moving block.

[0010] In an embodiment, along the axial direction of the developing roller, the elastic pushing member is located at the middle position of the developing housing. The elastic pushing member is located at the middle of the developing housing, which can ensure that the developing housing rotates and moves as a whole without tilting.

[0011] In an embodiment, the elastic pushing member is two, and along the axial direction of the developing roller, the elastic pushing members are respectively located at the first end and the second end of the developing housing. The two elastic pushing members and the two ends of the developing housing can ensure that the developing housing rotates and moves as a whole without tilting. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1It is a perspective view of the developing box and drum box according to an embodiment of the utility model.

[0013] Figure 2 It is Figure 1 It is a perspective view of the developing box.

[0014] Figure 3 It is Figure 2 It is an exploded view of the developing box.

[0015] Figure 4 It is Figure 2 It is a partial enlarged view of the developing box.

[0016] Figure 5 And Figure 6 It is a schematic view of the position relationship between the partial structure in the imaging device and the chip support. DETAILED DESCRIPTION

[0017] The structure of the developing box and other aspects of the utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings.

[0018] As shown in Figure 1 And Figure 2 The developing box 1 of the utility model can be detachably installed into the drum box 2, and then can be detachably installed into the imaging device together with the drum box 2. The developing box 1 comprises a developing housing 11 and a developing roller 12 rotatably installed on the developing housing 11. Along the installation direction X of the developing box 1, the developing housing 11 has a front end 111 and a rear end 112, and along the axial direction Y of the developing roller 12, the developing housing 11 has a first end 113 and a second end 114. The drum box 2 comprises a drum box housing 21 and a photosensitive drum 22 rotatably installed on the drum box housing 21. The drum box housing 21 has a cavity 23 for accommodating the developing box.

[0019] As shown in Figure 3 And Figure 4 In a specific embodiment, the developing housing 11 comprises an upper housing 115 and a lower housing 116, the upper housing 115 and the lower housing 116 are welded together to form the developing housing 11, and the developing housing 11 has a cavity 117 for accommodating the developing agent. The developing box 1 further comprises an end cover 13 detachably installed at the first end 113 of the housing 11.

[0020] The developing box 1 of the utility model comprises a chip support 14, which is used for installing a chip (not shown), and the chip stores relevant information such as the developing box model. In an embodiment, the chip support 14 is fixedly installed on the end cover 13. The chip support 14 is fixed relative to the developing housing 11.

[0021] The developing box 1 further comprises an elastic pushing piece 16. The elastic pushing piece 16 is installed at the bottom 118 of the developing shell 11 and is closer to the rear end 112 of the developing shell 11 relative to the front end 111 of the developing shell 11. When the developing box 1 is installed to the drum box 2, the elastic pushing piece 16 can abut against the drum box shell 21 to force the rear end 112 of the developing box shell 11 to move away from the drum box shell 21. In an embodiment, along the axial direction Y of the developing roller 12, the elastic pushing piece 16 is located at the middle position of the developing shell 11. In another embodiment, the elastic pushing piece 16 is two, and the elastic pushing piece 16 is respectively located at or close to the first end 113 and the second end 114 of the developing shell 11.

[0022] In a specific embodiment, the elastic pushing piece 16 further comprises a moving block 161 and an elastic piece 162. The lower shell 116 of the developing shell 11 is provided with a cavity 116a for accommodating and reciprocating the moving block. The elastic piece 162 is arranged between the moving block 161 and the developing shell 11 to provide the moving block 161 with an elastic force. In a specific embodiment, the elastic piece 162 is a compression spring, one end of the elastic piece 162 abuts against the moving block 161, and the other end abuts against a local position of the upper shell 115. When the developing box 1 is installed to the drum box 2, the lower end of the moving block 161 can abut against the bottom wall of the drum box shell 21.

[0023] The moving block 161 has a pair of limiting hooks 161a, and the lower shell 116 of the developing shell 11 is provided with a sliding groove 116b. When the moving block 161 is placed in the cavity 116a, the limiting hooks 161a are located in the sliding groove 116b and can move along the sliding groove 116b. The sliding groove 116b can limit the movement range of the moving block 161.

[0024] When the developing box 1 is detachably installed in the cavity 23 of the drum box 2, the moving block 161 of the elastic pushing piece 16 abuts against the bottom wall of the drum box shell 21. The developing box 1 and the drum box 2 are detachably installed into the image forming device together. The inner wall 3 of the image forming device has a protruding structure 31, and when the developing box 1 enters the image forming device along the installation direction X, the chip support 14 of the developing box 1 will be blocked by the protruding structure 31, as shown in Figure 5When the user continues to push the developing cartridge 1, the inner wall 3 will apply a pushing force to the developing cartridge 1, forcing the rear end 112 of the developing shell 11 to move towards the direction of the drum cartridge shell 21, that is, the rear end 112 of the developing shell 11 rotates and moves around the roller shaft of the developing roller 12, and the gap between the developing shell 11 and the drum cartridge shell 21 becomes smaller. When the developing shell 11 is forced to move, the moving block 161 moves towards the direction of the developing shell 11, and the elastic member 162 is compressed and shrunk. When the chip support 14 passes the protruding structure 31, the protruding structure 31 no longer applies a pushing force to the developing cartridge 1, and the elastic pushing member 16 applies an elastic pushing force to the developing shell 11, and the rear end 112 of the developing shell 11 moves away from the drum cartridge shell 21, so that the chip electric contact surface on the chip support 14 can be in contact with the electric contact 32 in the image forming device, as shown in Figure 6

[0025] When the developing cartridge is installed, the rear end 112 of the developing cartridge 1 can rotate and move around the roller shaft of the developing roller 12 to avoid or pass the protruding structure 31 in the image forming device, and the developing cartridge 1 can return to the initial position under the action of the elastic pushing member 16 to be in contact with the electric contact 32 in the image forming device. The chip support structure of the developing cartridge of the utility model is simple, and the developing cartridge will not change the cooperation between the drum cartridge and the image forming device when moving, so that the good printing quality can be ensured.

[0026] The above-mentioned embodiments are only used for illustrating the concept and scope of the utility model, and are not used for limiting the protection scope of the utility model. The modifications, equivalent replacements and other ways of improvement made by the above-mentioned embodiments for the person skilled in the art are also within the concept of the utility model. The protection scope and concept of the utility model are specifically defined by the claims.​

Claims

1. A developing cartridge detachably mountable to a drum cartridge, the drum cartridge including a drum cartridge housing and a photosensitive drum rotatably mounted to the drum cartridge housing, the developing cartridge comprising a developing housing having a cavity for accommodating a developer; the developing housing having a front end and a rear end in a mounting direction of the developing cartridge; a developing roller rotatably mounted to the developing housing; and a chip holder for mounting a chip, the developing housing having a first end and a second end in an axial direction of the developing roller, the chip holder being disposed at the first end of the developing housing and fixed relative to the developing housing; characterized in that the developing cartridge further comprises elastic urging members mounted to a bottom surface of the developing housing, the elastic urging members being closer to the rear end of the developing housing than to the front end of the developing housing; when the developing cartridge is mounted to the drum cartridge, the elastic urging members are capable of contacting the drum cartridge housing to urge the rear end of the developing housing to move away from the drum cartridge housing. the elastic urging members include moving blocks and elastic members, the elastic members being disposed between the developing housing and the moving blocks; 2. The process cartridge according to claim 1, wherein when the developing cartridge is mounted to the drum cartridge, one end of the moving blocks is capable of contacting the drum cartridge housing. the moving blocks have limit hooks, the developing housing is provided with grooves, and the limit hooks are located in the grooves to limit the moving range of the moving blocks.

3. The process cartridge of claim 2 wherein, in the axial direction of the developing roller, the elastic urging members are located at a middle position of the developing housing.

4. The process cartridge of claim 1, wherein, there are two elastic urging members, and in the axial direction of the developing roller, the elastic urging members are respectively located at the first end and the second end of the developing housing.

5. The process cartridge of claim 1, wherein, ​

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