Image forming apparatus having weighting material in image bearing member and process cartridge usable with same
US5430526A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1994 |
| Grant date | Jul 4, 1995 |
| Priority date | — |
| Expiry date | Mar 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a rotatable image bearing member including an image bearing layer and a base member for supporting the image bearing layer; a charging member contactable to the image bearing member for electrically charging the image bearing member; a voltage applying device for applying an oscillating voltage to the charging member; a weighting material inside the base member; and an elastic material between the base member and the weighting material. The elastic material has a hardness not more than 70 degrees (JIS-A), a thickness of 1-5 mm and an outer diameter larger by 40-400 microns than an inner diameter of the base member before it is press-fitted into the base member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.