Cartridge, and electrophotographic image forming apparatus...

G - Physics – 03 – G

Patent

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Details

G03G 15/08 (2006.01) G03G 21/18 (2006.01)

Patent

CA 2725120

A cartridge for use with a main assembly of an electrophotographic image forming apparatus, the main assembly including a driving shaft having a rotational force applying portion, wherein the cartridge is dismountable from the main assembly in a direction substantially perpendicular to an axial direction of the driving shaft, the cartridge including i) a developing roller that is rotatable about an axis thereof; and ii) a coupling member (150) engageable with the rotational force applying portion (180) to receive a rotational force for rotating the developing roller, the coupling member being capable of taking a rotational force transmitting angular position (fig.18b) for transmitting the rotational force for rotating the developing roller and a disengaging angular position (fig.18a) in which the coupling member is inclined away from the rotational force transmitting angular position, wherein when the cartridge is dismounted from the main assembly, the coupling member moves from the rotational force transmitting angular position to the disengaging angular position.

La présente invention concerne une cartouche destinée à être utilisée avec un ensemble principal formant appareil électrophotographique de formation d'images, ledit ensemble principal comprenant un arbre d'entraînement ayant une partie appliquant une force rotative, la cartouche pouvant être extraite de l'ensemble principal dans une direction sensiblement perpendiculaire à la direction axiale de l'arbre d'entraînement, la cartouche comprenant i) un rouleau de développement pouvant tourner sur son axe; et ii) un organe d'accouplement (150) pouvant se mettre en prise avec la partie appliquant la force rotative (180) pour recevoir une force rotative permettant de faire tourner le rouleau de développement, l'organe d'accouplement pouvant adopter une position angulaire de transmission de la force rotative (fig.18b) pour transmettre la force rotative permettant de faire tourner le rouleau de développement et une position angulaire de dégagement (fig.18a) dans laquelle l'organe d'accouplement est incliné à l'écart de la position angulaire de transmission de la force rotative. Dans ce système, lorsque la cartouche est extraite de l'ensemble principal, l'organe d'accouplement passe de la position angulaire de transmission de la force rotative à la position angulaire de dégagement.

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