Skew sensor calibration
US10343433B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2015 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Oct 30, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J13/03
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A skew sensor calibration unit including a scanner providing a scanned image of a sheet as the sheet is conveyed along a transport path, the scanned image including a leading edge of the sheet and a skew detection pattern printed thereon by a printhead. A calibration module measures a top skew of the sheet based on position signals from a plurality of skew sensors indicating a position of a leading edge of a sheet as the sheet is conveyed along the transport path, measure an image skew of the sheet relative to the printhead based on the scanned image, and generates a calibration factor that when applied to the measured top skew provides a calibrated top skew that matches the image skew.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.