Image formation apparatus and method of alternating developing units
US6718151B2 · kind B2 · utility
4Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 2002 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Jun 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0106
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image formation apparatus has photo conductor drums, and upstream developing rollers and downstream developing rollers that are brought into contact with respective photo conductor drums based on a changeover. The developing rollers develop latent images into visual images. A time required to change over a developing unit from one developing unit to the other developing unit is set as follows. A changeover time T2 from the downstream developing rollers to the upstream developing rollers respectively is set shorter than a changeover time T1 from the upstream developing rollers to the downstream developing rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.