Cartridge and drum unit for electrophotographic image forming apparatus

Abstract

A cartridge mountable to a printer, said printer including a coupling guide contactable to a coupling of the cartridge to guide the coupling member. A case of the cartridge is provided with a hole for exposing a free end portion of the coupling to an outside of the cartridge, and a retracted portion provided in downstream of the hole with respect to the mounting direction of the cartridge. When the cartridge is mounted to a main assembly of the printer, the coupling guide enters the retracted portion from which the coupling member has retracted.

1 . A cartridge mountable to a main assembly of an electrophotographic image forming apparatus, said coupling member comprising a pivotable coupling member, wherein the main assembly including a rotatable engaging portion for engaging with said coupling member, and a coupling guide, positioned downstream of a rotational axis of the engaging portion with respect to a mounting direction of said cartridge, for being contacted by said coupling member pivoted relative to the rotational axis of the engaging portion to guide said coupling member to be parallel with the rotational axis of the engaging portion, said cartridge being mountable to the main assembly in the mounting direction substantially perpendicular to the rotational axis of the engaging portion, said cartridge comprising:
 a frame;   a rotatable member for carrying a developer; and   a rotatable force receiving member for receiving a rotational force to be transmitted to said rotatable member;   said coupling member including a free end portion having a receiving portion for receiving the rotational force from the engaging portion and a connecting portion having a transmitting portion for transmitting the rotational force received by said receiving portion to said force receiving member,   said frame including,   a hole portion for exposing said free end portion to an outside of said frame, and   a receiving portion, provided in a downstream of said hole portion with respect to the mounting direction, for receiving said coupling member when said coupling member is inclined toward a downstream side with respect to the mounting direction and for receiving said coupling guide in place of said coupling member with engagement of said coupling member with the engaging portion.   
     
     
         2 .- 188 . (canceled)