PURPOSE: To improve the attaching positional precision of an image carrier and a magnet and to enhance image quality by positioning the image carrier and the magnet by means of a common positioning member.
CONSTITUTION: A bearing member 26 is attached to pivotally support a photosensitive drum 9 and one end of a developing sleeve 12d, made of the slide resistance material of polyacetal, etc., and integrally molded with a drum bearing part 26a fitting into the photosensitive drum 9, a sleeve bearing part 26b fitting into the outside surface of the developing sleeve 12d, and a D-cup hole part 26c into which the end part of the D-cut magnet 12c is fitted. When the photosensitive drum 9 and the developing sleeve 12d or the magnet 12c, are positioned with one member, so that the photosensitive drum 9 and the magnet 12c can be precisely positioned. Thus, magnetic force on the surface of the photosensitive drum 9 can be kept constant, and a highly accurate image can be obtained.
| JP2005215450 | DEVELOPING DEVICE |
| JP4992565 | Image forming device and storage device |
| JP2015011229 | CARTRIDGE |
WATANABE KAZUFUMI
TSUDA TADAYUKI
KOBAYASHI KAZUNORI
SEKINE KAZUMI
SASAKO ETSUICHI
IKEMOTO ISAO
