Color image forming apparatus
US7636533B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2007 |
| Grant date | Dec 22, 2009 |
| Priority date | — |
| Expiry date | Dec 13, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0161
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color image forming apparatus including: a plurality of drum-type photoconductors for forming an image in a different color on each peripheral surface and the photoconductors having at least two different diameters; a plurality of driving sections for driving each photoconductor at a driving speed in accordance with the diameter so that each photoconductor rotates at a predetermined peripheral speed; a correction signal output section for outputting a speed correction signal to correct a periodic pitch fluctuation included in each formed image; and a drive control section for controlling the driving section to correct the driving speed of each photoconductor by the speed correction signal, wherein the speed correction signal is a signal having the same cycle as a rotational cycle of each photoconductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.