Patent ID: 7986898

Claim:
An image forming apparatus comprising: a plurality of photosensitive members which are arranged in parallel with each other and aligned in a first direction; a plurality of developing units which are provided correspondingly to the photosensitive members, respectively, and which arranged in parallel with each other and aligned in the first direction, each of the developing units comprising, a developer supplier configured to supply developer to the corresponding photosensitive member, and a housing which holds the developer supplier; a translation member which opposes all the developing units from a side thereof in a second direction orthogonal to the first direction, and which moves the developing units between a contact position in which each of the developer suppliers contacts the corresponding photosensitive member and a separated position in which each of the developer suppliers is separated from the corresponding photosensitive member by a linear reciprocating movement of the translation member in the first direction; a plurality of memory chips provided on the housings of the developing units, respectively, at portions which oppose the translation member; a plurality of contacts provided on the translation member correspondingly to the plurality of memory chips, each of the contacts configured to contact the corresponding memory chips; and a wiring provided on the translation member and electrically connected to each of the contacts, wherein the contacts are disposed at positions opposing the corresponding memory chips, respectively, when the developing units are moved to the contact position.