Patent ID: 7702251

Claim:
A unit detachably mountable to a main assembly of an electrophotographic image forming apparatus having a main assembly electrical contact, said unit comprising: a storing portion configured to store a developer; a memory element configured to store information relating to said unit; a contact member including a unit electrical contact electrically connectable to the main assembly electrical contact configured and positioned to transmit the information from said memory element to the main assembly of the electrophotographic image forming apparatus; and a supporting device configured and positioned to support said contact member, said supporting device including: a first regulating portion configured and positioned to regulate movement of said contact member in a widthwise direction, said first regulating portion being disposed with a gap between said first regulating portion and said contact member; a second regulating portion configured and positioned to regulate movement of said contact member in a thickness direction perpendicular to the widthwise direction, said second regulating portion being disposed with a gap between said second regulating portion and said contact member; and an opening configured and positioned to permit insertion of said contact member into said supporting device, wherein said opening opens in one direction which is a direction of height and which is perpendicular to the widthwise direction and to the thickness direction, wherein the main assembly electrical contact includes a spring movable by a predetermined stroke in the thickness direction of said contact member, and the gap of said second regulating portion W 1 , a length W 2 of said contact member in the thickness direction, and the stroke U satisfy, W 2< W 1, and ( W 1− W 2)< U.