Image forming apparatus with contacts for memory chips
An image forming apparatus is provided. The image forming apparatus includes: plural photosensitive members aligned in a first direction; plural developing units for the photosensitive members, respectively, each of the developing units including a developer supplier, and a housing which holds the developer supplier; a translation member which moves the developing units between a contact position in which the developer suppliers contact the photosensitive members and a separated position in which the developer suppliers are separated from the photosensitive members by a linear reciprocating movement in the first direction; plural memory chips provided on the housings of the developing units, respectively; plural contacts provided on the translation member, 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.
1. 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.
2. The image forming apparatus according to claim 1 ,
wherein the translation member includes a space for accommodating the wiring.
3. The image forming apparatus according to claim 1 ,
wherein a plurality of contacts are provided for each of the memory chips, and
wherein a plurality of wirings are electrically connected to each of the memory chips via the plurality of contacts.
4. The image forming apparatus according to claim 1 ,
wherein each of the contacts provided on the translation member protrudes in the second direction from the translation member.
5. The image forming apparatus according to claim 1 ,
wherein the wiring is provided on a first side of the translation member, which is opposite to a second side opposing the developing units.
6. The image forming apparatus according to claim 1 ,
wherein each of the memory chips stores information on the corresponding developing unit.
7. 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 a plurality of contacts are provided for each of the memory chips,
wherein a plurality of wirings are electrically connected to each of the memory chips via the plurality of contacts,
wherein two contacts are provided for each of the memory chips, and
wherein a wiring for signal transmission and reception is electrically connected to each of the memory chips via one of the two contacts, and a wiring for ground connection is electrically connected to the memory chip via the other one of the two contacts.
8. 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 wiring is provided on a first side of the translation member, which is opposite to a second side opposing the developing units,
wherein the translation member is formed with a plurality of holes, and
wherein each of the contacts provided on the translation member protrudes to the second side from the first side through the corresponding hole.