Image forming apparatus and density adjusting method
US8948631B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 2011 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Oct 28, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00059
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus has a memory, an image forming unit, an intermediate transfer member, a density detector, a background density measurer, a test patch controlling unit and a density correcting unit. The density detector detects the density of the intermediate transfer member. The background density measurer stores background density, in the memory in correspondence with position information on the intermediate transfer member at a predetermined timing before a calibration for adjusting image formation density. The test patch controlling unit causes the image forming unit to form a test patch, on the intermediate transfer member while the intermediate transfer member is driven at a predetermined speed. The density correcting unit executes the calibration to adjust image formation density according to a difference between the background density stored in the memory when executing the calibration and corresponding to the position and density of the test patch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.