Test pattern printing method, information processing apparatus and printing apparatus
US6450606B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/393
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a color deviation correction process, a printing apparatus prints a test pattern that allows highly accurate visual detection of a color deviation caused by output characteristic variations of individual print heads in the printing apparatus. More specifically, when patches of a test pattern are printed by mixing three colors, cyan, magenta, and yellow, the gradation value of each of the patch forming colors is changed in a gradation region close to a gradation value at which the saturation difference becomes maximum between a patch printed by the print heads having a central output characteristic with no deviation and a patch printed by deviating the gradation value of each color from the central output characteristic by a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.