Image forming apparatus having a positioning device for a developing unit

摘要: An image forming apparatus, and particularly an improved mounting arrangement for a developing unit of apparatus is provided. The includes axis supporting members which support the axes rollers on side plates with each including holes receive respective rollers. In preferred form, pair are provided, one in form round hole or circular hole, other elongated arcuate slot. disposed such that predetermined relationship provided between photoconductive member, e.g., drum, thereby ensuring desired gap despite variations may occur spacing (or along rollers).