Image forming apparatus, process cartridge, and electrode member
AssigneeCanon Kabushiki Kaisha
InventorRyoji Kusudo
Life of this patent
Estimating the term…
Abstract
An electrode member used for supplying power from an image forming apparatus body to a developing roller when a process cartridge detachably attachable to the apparatus body is attached to the apparatus body includes a conductive substrate, a hole provided in the substrate, an end of the hole being larger than a width of the hole, an elastic portion bent and raised along the hole, an electrode being able to contact the elastic portion, a rib provided opposite and along the end of the hole, an engagement hole for mounting the electrode member to a bearing of the developing roller, and a contact portion making contact with an inner surface of the developing roller, when the electrode member is mounted to the bearing.
Claims9
An electrode member used for supplying power from an image forming apparatus body to a developing roller, when a process cartridge detachably attachable to said apparatus body is attached to said apparatus body, comprising:
- a conductive substrate;
- a hole provided in said substrate, an end of said hole being larger than a width of said hole;
- an elastic portion bent and raised along said hole, an electrode being able to contact said elastic portion;
- a rib provided opposite and along the end of said hole;
- an engagement hole for mounting said electrode member to a bearing of said developing roller;
- and
- a contact portion making contact with an inner surface of said developing roller, when said electrode member is mounted to the bearing.
A process cartridge detachably attachable to an image forming apparatus body, comprising:
- an electrophotographic photosensitive member;
- a developing roller that develops a latent image formed on said electrophotographic photosensitive member;
- and
- an electrode member used for supplying power from said apparatus body to said developing roller, when said process cartridge is attached to said apparatus body,
- wherein said electrode member comprises:
- a conductive substrate;
- a hole provided in said substrate, an end of said hole being larger than a width of said hole;
- an elastic portion bent and raised along said hole, an electrode provided on a cartridge frame being in contact with said elastic portion;
- a rib provided opposite and along the end of said hole;
- an engagement hole for mounting said electrode member to a bearing of said developing roller;
- and
- a contact portion making contact with an inner surface of said developing roller.
An image forming apparatus to which a process cartridge is detachably attachable, and that forms an image on a recording medium, comprising:
- (i) an attachment portion for detachably attaching said process cartridge comprising:
- an electrophotographic photosensitive member;
- a developing roller that develops a latent image formed on said electrophotographic photosensitive member;
- and
- an electrode member used for supplying power from an image forming apparatus body to said developing roller, when said process cartridge is attached to said apparatus body,
- wherein said electrode member comprises:
- a conductive substrate;
- a hole provided in said substrate, an end of said hole being larger than a width of said hole;
- an elastic portion bent and raised along said hole, an electrode provided on a cartridge frame being in contact with said elastic portion;
- a rib provided opposite and along the end of said hole;
- an engagement hole for mounting said electrode member to a bearing of said developing roller;
- and
- a contact portion making contact with an inner surface of said developing roller;
- and
- (ii) conveying means that conveys said recording medium.
Dependencies are inferred from the claim text.