Charging apparatus and image forming apparatus
US5799233A · kind A · utility
7Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Sep 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/022
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A charging apparatus includes a charging member contactable or proximatable to a member to be charged, the charging member being capable of being supplied with a voltage; wherein the charging member has a magnetic particle layer, and a magnetic force generator with a gap for generating magnetic force in the magnetic particles, the magnetic particle layer and magnetic force generator forming a magnetic circuit; and wherein the magnetic particle has a particle size of no less than 10 .mu.m and no more than 100 .mu.m, and the maximum magnetic flux density in the gap ranges 1,000.times.10.sup.-4 T-10,000.times.10.sup.-4 T.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.