Cartridge and image forming device

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The cartridge design with a movable portion and holding mechanism addresses the challenge of driving force management in image forming devices, enhancing operational stability and efficiency by precisely controlling the developing member's operation.

HK40134626APending Publication Date: 2026-07-10CANON KK

Patent Information

Authority / Receiving Office: HK · HK
Patent Type: Applications
Current Assignee / Owner: CANON KK
Filing Date: 2023-06-15
Publication Date: 2026-07-10

AI Technical Summary

Technical Problem

Existing image forming devices face challenges in efficiently managing the transmission and interruption of driving force to developing members within cartridges, leading to potential misalignment and operational inefficiencies.

Method used

A cartridge design incorporating a moving portion that can switch between driving force transmission and interruption positions, along with a holding mechanism to stabilize the moving portion in the interruption position, ensuring precise control over the developing member's operation.

Benefits of technology

Enhances operational stability and efficiency by precisely managing the driving force transmission to the developing member, reducing misalignment and improving overall device performance.

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Abstract

[Task] Further development of conventional technology.[Solution] A cartridge is provided, including: a photosensitive member 4; a developing member 6 for depositing toner onto the photosensitive member 4; a coupling member 74 capable of receiving a driving force for rotating the developing member 6; a movable portion 510 capable of moving between a driving force transmission position for allowing transmission of the driving force from the coupling member 74 to the developing member 6 and a driving force interruption position for interrupting transmission of the driving force from the coupling member to the developing member 6; a holding portion for holding the movable portion in the driving force interruption position when the movable portion is in the driving force interruption position, wherein the movable portion 510 is capable of occupying the driving force transmission position and the driving force interruption position in a state in which the developing member 6 is in a position in which toner can be deposited on the photosensitive member 6.

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Description

Abstract [Problem] To further develop the prior art. [Solution] Provided is a cartridge comprising: a photoreceptor 4; a developing member 6 that causes toner to adhere to the photoreceptor 4; a coupling member 74 capable of receiving a driving force for rotationally driving the developing member 6; a moving portion 510 movable between a driving force transmission position where transmission of the driving force from the coupling member 74 to the developing member 6 is allowed and a driving force interruption position where transmission of the driving force from the coupling member 74 to the developing member 6 is interrupted; and a holding portion that holds the moving portion 510 in the driving force interruption position when the moving portion 510 is in the driving force interruption position. In a state in which the developing member 6 is in such a position that it is possible to cause the toner to adhere to the photoreceptor 4, the moving portion 510 can be positioned in the driving force transmission position or the driving force interruption position.

Claims

1. A box, comprising: Photosensitive components; A developing member for depositing toner onto the photosensitive member; A connecting member capable of receiving a driving force for rotating the developing member; The movable portion is movable between a drive force transmission position and a drive force interruption position, the drive force transmission position being used to allow drive force transmission from the connecting member to the developing member, and the drive force interruption position being used to interrupt drive force transmission from the connecting member to the developing member. The retaining portion is used to hold the movable portion in the drive force interruption position when the movable portion is in the drive force interruption position. When the developing member is in a position where the toner can be deposited on the photosensitive member, the movable part can occupy the driving force transmission position and the driving force interruption position.