Service life informing device for charged member, informing method thereof, process cartridge and image forming apparatus
US5835818A · kind A · utility
43Cited by
14References
85Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Dec 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A life informing device for a charge body includes a body to be charged, and a charging member for charging the charge body. The charging member is adapted to receive an oscillating voltage and to be in contact with the charge body during the charging operation. Also provided is an informing device for visually or acoustically informing the user whether the charge body reaches the end of the life time thereof, based on an accumulated time of the application time during which the oscillating voltage is applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.