Charging device, image forming apparatus and process cartridge detachably mountable to image forming apparatus
US5440374A · kind A · utility
8Cited by
4References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1994 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Sep 26, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0216
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A charging device includes a movable member to be charged; a charging member contactable to the member to be charged to electrically charge the member to be charged, a voltage application means of applying an oscillating voltage between the charging member and the member to be charged; wherein Wc/Wd<1.0 is satisfied, where Wc is a weight of the charging member, and Wd is a weight of the member to be charged; and wherein Vp>f/100 (mm/sec), where Vp (mm/sec) is a moving speed of the member to be charged, and f (Hz) is a frequency of the oscillating voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.