Image recording apparatus in which a plurality of images of different colors are printed in registration
US6408156B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Aug 16, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0161
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image recording apparatus includes a plurality of print engine aligned in a advance direction in which a transporting member transports a recording medium. A first one of the plurality of image-forming sections records a first detection pattern on the transporting member and a second one of the plurality of image-forming sections records a second detection pattern on the first detection pattern. A color shift detecting section detects the amount of color shift between the first and second ones of the print engines by measuring an intensity of light reflected by the first and second detection patterns. Based on the amount of color shift, a correcting section corrects a position of the image recorded on the recording medium. The detection pattern may be of different configurations, depending on the direction in which color shift occurs, i.e., traverse, advance, and oblique directions. The detection pattern includes a plurality of blocks aligned in a row, each of the plurality of blocks having at least one stripe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.