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Developing cartridge, process cartridge, and electrophotographic image forming apparatus

A developing cartridge and developing roller technology, which is applied in the field of processing cartridges, can solve the problem of high requirements for the control device, and achieve the effect of simplifying the control device

Pending Publication Date: 2021-03-16
ZHUHAI TUOJIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a developing cartridge to solve the problem that the existing developing cartridge has high requirements on the control device of the electrophotographic imaging device, wherein only one longitudinal end of the developing cartridge can receive the separation force, for example, it can be a conductive part of the developing cartridge The end receives the separation force, the driving end does not receive the separation force, or the conductive end of the developing cartridge does not receive the separation force, and the driving end receives the separation force. At this time, the developing cartridge can always receive the driving force. Therefore, the control device in the electrophotographic imaging device It is no longer necessary to control the driving force output to stop working and start working constantly

Method used

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  • Developing cartridge, process cartridge, and electrophotographic image forming apparatus
  • Developing cartridge, process cartridge, and electrophotographic image forming apparatus
  • Developing cartridge, process cartridge, and electrophotographic image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] figure 1 It is a perspective view of the developing cartridge according to Embodiment 1 of the present invention viewed from the driving end; figure 2 It is a perspective view of the developer cartridge according to Embodiment 1 of the present invention viewed from the conductive end.

[0037] The developing cartridge 10 is detachably mounted to a drum frame (not shown) in a mounting direction A to form a process cartridge, which is then mounted to the electrophotographic image forming apparatus in substantially the same direction as A. The developing cartridge 10 includes a housing 20 and a developing roller 21 rotatably installed in the housing 20 , along the installation direction A, the developing roller 21 is located at one end of the housing 20 . As shown in the figure, one of the longitudinal ends 20a of the developing cartridge 10 is used to receive driving force from the electrophotographic image forming apparatus, and thus may be referred to as a driving end...

Embodiment 2

[0054] Figure 6 It is a perspective view of the developing cartridge according to the second embodiment of the present invention viewed from the conductive end.

[0055] In this embodiment, the counting assembly 25 is redesigned. As shown in the figure, the counting assembly 25 includes a driving member 252, a transmission gear 253 and a toggle member 254. The intermediate gear 26a, the transmission gear 253 meshes with the intermediate gear 26a and the driving member 252 respectively, and the driving member 252 is a rack as a whole, in which at least one protrusion for triggering the toggle member 254 and teeth meshing with the transmission gear 253 are provided teeth 2523, the protrusions are first protrusions 2521 and second protrusions 2522 arranged at intervals along the installation direction A, and the driving force received by the power receiving part 31 is transmitted to the driving part through the driving gear 26, the intermediate gear 26a and the transmission gear...

Embodiment 3

[0066] Figure 11 It is an exploded schematic diagram of some parts of the developer cartridge involved in the third embodiment of the present invention; Figure 12A It is a perspective view of the powder-discharging knife involved in Embodiment 3 of the present invention; Figure 12B It is a top view of the powder outlet knife involved in the third embodiment of the present invention; Figure 13 It is a schematic diagram of the position of the separation force receiver in the conductive end of the developing cartridge involved in the third embodiment of the present invention; Figure 14 It is a side view of the developing cartridge according to the third embodiment of the present invention viewed from the conductive end.

[0067] Such as Figure 11 As shown, the developing cartridge 10 also includes a powder outlet knife 28 installed in the housing 20 and in contact with the developing roller 21. The powder outlet knife 28 is used to adjust the thickness of the carbon powd...

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PUM

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Abstract

The present invention relates to a developing cartridge, a process cartridge having the same, and an electrophotographic image forming apparatus, the developing cartridge comprising a housing and a developing roller rotatably mounted in the housing, the developing cartridge having a driving end and a conductive end arranged opposite to each other at both longitudinal ends of the housing, wherein the driving end is provided with a power receiving part for receiving driving force from the outside to drive the developing roller to rotate, and the conductive end is used for receiving electric power from the outside to supply to the developing roller; the developing cartridge further comprises a separating force receiving part arranged at the driving end or the conductive end; when the developing cartridge works, the developing roller is in contact with the photosensitive drum positioned outside the developing cartridge; when the developing cartridge does not work, the separating force receiving part receives separating force from the outside, the developing roller and the photosensitive drum are separated from each other at the end where the separating force receiving part is located,and a control device in the image forming apparatus does not need to control whether a driving force output component corresponding to the developing box works or not according to the state of the developing box any more, therefore the control device in the image forming apparatus is simplified.

Description

technical field [0001] The invention relates to the field of electrophotographic imaging, in particular to a developing box detachably installed in an electrophotographic imaging device and a process box with the developing box. Background technique [0002] There is an existing process cartridge with a drum powder separation structure, that is, the process cartridge is divided into two parts, a detachably combined developing cartridge and a drum frame, wherein the developing cartridge contains the toner required for the process cartridge to work, and is rotatable The developing roller installed in the developing cartridge conveys the toner to the drum frame, and the photosensitive drum required for imaging is rotatably installed in the drum frame. When the developing cartridge is installed in the drum frame, the developing roller contacts the photosensitive drum, and Delivers toner to the surface of the photosensitive drum. [0003] When the process cartridge does not need...

Claims

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Application Information

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IPC IPC(8): G03G15/08G03G21/18
CPCG03G15/0896G03G21/186G03G21/1814G03G21/1867
Inventor 周欣刘学
Owner ZHUHAI TUOJIA TECH