Image forming apparatus which corrects the image forming factors in response to density sensing means and duration of inactive state
US5057867A · kind A · utility
18Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1989 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Oct 4, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00084
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic copier, facsimile machine, laser printer or similar image forming apparatus having a photoconductive element. The apparatus corrects a bias voltage for development, amount of charge, amount of exposure or similar image forming factor on the basis of an inactive state of the photoconductive element. When the duration of the inactive state is short and does not need a correction of the image forming factor, an image forming procedure is executed immediately. When the inactive state has lasted a long time, the image forming factor is corrected before the start of an image forming procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.