To effectively restrain the variation component of the pressuring energizing force of a developing cartridge against an image carrier cartridge, thereby obtaining a high-quality image free from image irregularities.
The process cartridge is equipped with: the image carrier cartridge 11 formed as one unit including at least an image carrier 1 and positioned and supported to an image forming apparatus body 18; and the developing cartridge 12 formed as one unit including at least a developing unit 2 and pressured and energized against the image carrier cartridge 11 in a state where it is positioned to the image carrier cartridge 11. A toner supply unit 4 is included at least in either the image carrier cartridge 11 or the developing cartridge 12, and at least a part 4b of the toner supply unit 4 is supported to the image forming apparatus body 18.
| JPH0619237A | 1994-01-28 | |||
| JP2003208074A | 2003-07-25 | |||
| JP2000035736A | 2000-02-02 | |||
| JP2001034145A | 2001-02-09 | |||
| JPH10186851A | 1998-07-14 |
Tomohiro Nakamura
Katsuo Naruse