Image forming apparatus with spectral data detection unit
US9031431B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 8, 2012 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Oct 31, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/5062
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus includes a unit configured to judge a border between two patch images among a plurality of patch images formed on the recording material, based on change in the amount of the light beam of at least one noticed wavelength detected by a detection unit; a unit configured to calculate a color value of a patch image from the amount of the light beam of each wavelength detected by the detection unit; and a control unit configured to control an accumulation period of charge for the photoelectric conversion at the detection unit. The control unit is further configured to make the accumulation period of the detection unit shorter when judging the border between the two patch images than when calculating the color value of each of the two patch images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.