Patent ID: 6898402
Filing Date: 2005-05-24
Classification: G03G

Abstract:
1. A developing unit of an electrophotographic image forming apparatus including a frame and a photoreceptive drum having a center shaft, comprising: at least one developing apparatus installed on the frame to access and be separated from the photoreceptive drum, and including: a developing roller developing an electrostatic latent image formed on the photoreceptive drum, and a gap maintenance member contacting the photoreceptive drum such that the developing roller accesses the photoreceptive drum in a non-contact state while maintaining a predetermined gap with the photoreceptive drum; and a guide portion formed on the frame to guide a movement of the at least one developing apparatus, the guide portion comprising: an inclined portion formed on a leading portion of the guide portion to face a center shaft of the photoreceptive drum so that the gap maintenance member contacts the photoreceptive drum while pressing the photoreceptive drum in a radial direction of the photoreceptive drum.