Patent ID: 7689139

Claim:
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.