| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus where a pressing state of a developing roller against a photoreceptor is kept balanced, a process cartridge attached to the image forming apparatus and a developing cartridge. <P>SOLUTION: In the process cartridge 13, a leaf spring 23 energizes the developing cartridge 16 backward, whereby the developing roller 33 comes into contact with the photoreceptor drum 18 in a pressing state. In the developing cartridge 16, four memory terminals 54 are arranged at a plurality of positions linearly symmetric with a line L passing through the center of a longitudinal direction (right-and-left direction) in a contact area between the photoreceptor drum 18 and the developing roller 33 and extending in an energizing direction by the leaf spring 23 as axis of symmetry. Thus, load applied to the respective memory terminals 54 from main body terminals 56 is uniformly dispersed in the right-and-left direction. Therefore, the pressing state of the developing roller 33 against the photoreceptor drum 18 is kept balanced without getting unbalanced. <P>COPYRIGHT: (C)2009,JPO&INPIT |
