Calibration to compensate for print bar skew angle
US12358286B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | May 20, 2021 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Sep 7, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2203/01
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A pagewide array (PWA) print bar of a printing device prints a calibration pattern on a print medium. The print bar is nominally perpendicular to a media advancement direction in which the print medium advances relative to the PWA print bar during printing. An image of the printed calibration pattern is optically scanned, and a skew angle by which the PWA print bar deviates from true perpendicular to the media advancement direction is calculated based on the optically scanned image. The printing device is calibrated to compensate for the calculated skew angle during subsequent printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.