Color image forming apparatus with polygonal mirror rotation phase control
US6184910A · kind A · utility
14Cited by
7References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1995 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Apr 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1219
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A color image forming apparatus capable of superposing toner images of respective colors in accurate register by preventing an exposing position from being displaced in the subscanning direction. The rotation phase of a polygonal mirror is controlled on the basis of the mark detection timing of a mark sensor. Hence, the exposing position in the subscanning direction is prevented from being displaced without regard to irregularities in the circumferential length and feed speed of an intermediate image transfer belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.