Electrical contact to process cartridge, developer cartridge or image forming apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorNaoya Kamimura
Life of this patent
Estimating the term…
Abstract
The pressed area mounted on the developer cartridge case is pressed towards a developer cartridge pressing direction. The developer roller and the photosensitive drum are in contact at a contact position. Electric potential is supplied to the developer cartridge when the electrical connection protrusion connected electrically to the developer roller rotation drive axis and the electrical connection part mounted on the outside of the developer cartridge are pushed together in the electrical connection pressing direction. Here, the electrical connection pressing direction is semi-orthogonal to the pressing action line that connects the pressing position and the contact position. Furthermore, the electrical connection protrusion crosses the pressing action line.
Claims41
An image forming device comprising:
- a developer cartridge that includes a developer carrier configured to carry a developer, a developer cartridge case configured to house the developer carrier, and a conductive member mounted on the developer cartridge case and electrically connected to said developer carrier;
- a developer cartridge mounting frame including an image carrier configured to form an image on a recording medium using the developer carried on the developer carrier by contacting the developer carrier at a designated contact position, wherein the developer cartridge is configured to be installed in and removed from the developer cartridge mounting frame;
- an urging member configured to urge in a pressing direction a portion of the developer cartridge case at a designated pressing position, and wherein in response to the urging member urging the portion of the developer cartridge case, the developer carrier is pressed against the image forming carrier at the contact position;
- and
- an electrical connection member configured to allow the conductive member to receive electric potential when contacting the electrical connection member in a direction perpendicular to a line that connects the contacting position and the pressing position.
A process cartridge configured to be installed in and removed from a frame of an image forming device, the process cartridge comprising:
- a developer cartridge that includes a developer carrier configured to carry a developer, a developer cartridge case configured to house the developer carrier and the developer, and a conductive member provided on the developer cartridge case, the conductive member being electrically connected to the developer carrier, the developer cartridge case including a portion urged in a pressing direction by an urging element at a designated pressing position;
- and
- a process cartridge frame that holds an image carrier to which the developer is carried by contacting the developer carrier at a designated contact position, the developer cartridge being configured to be installed in and removed from the process cartridge frame;
- wherein the conductive member is configured to be pressed by an electrical connection member in a direction perpendicular to a line that connects the pressing position and the contacting position.
A developer cartridge for use in an image forming device including an image carrier configured to be supported in a developer cartridge mounting frame, which is configured to be supported inside the image forming device, the developer cartridge being configured to be installed in and removed from the developer cartridge mounting frame, the developer cartridge comprising:
- a developer carrier configured to carry the developer;
- a developer cartridge case configured to house the developer carrier;
- a conductive member mounted on the developer cartridge case and electrically connected to the developer carrier;
- wherein the developer cartridge case is configured to allow the developer carrier to be pressed, at a designated pressing position, against the image carrier;
- and
- the conductive member is configured to be supplied with electric potential while being pressed by an electrical connection member in a direction perpendicular to a line that connects a contacting position where the developer carrier and the image carrier contact each other, and the designated pressing position.
Dependencies are inferred from the claim text.