Correction method, apparatus, data carrier or system for correcting for unintended spatial variation in lightness across a physical image produced by a xerographic process
US8208824B2 · kind B2 · utility
0Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2006 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Mar 16, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0429
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A correction method for correcting unintended spatial variation in lightness across a physical image produced by a xerographic process, the method comprising producing a test image using the xerographic process, measuring a difference between actual lightness and intended lightness across at least part of the test image, and varying the light source level used subsequently in the xerographic process to correct for the measured unintended difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.