Patent ID: 8744300

Claim:
An image forming apparatus, comprising: a main body defining an overall external appearance of the image forming apparatus; one or more developing unit assemblies detachably received in the main body, each of the one or more developing unit assemblies including a photoconductor, a charging device and a developer supply unit, the charging device being arranged adjacent the photoconductor and being configured to charge the photoconductor to an electrical potential, the developer supply unit being configured to supply developer to the photoconductor; a plurality of terminals provided on a support surface within the main body, the plurality of terminals being arranged to be electrically connected to a plurality of electrical contacts of each of the one or more developing unit assemblies received in the main body; and a surface distance extension part having a surface that surrounds at least a portion of any one of the plurality of terminals so as to extend a surface distance between at least two adjacent ones of the plurality of terminals, wherein the surface distance extension part is formed integrally with the support surface, the surface distance extension part and the support surface being formed of the same material.