Registration of duplex printed sheets in a sheet stacking device
US12344018B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2023 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Nov 24, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of printing and stacking sheets improves the relative alignment of images in a stack of printed sheet. The method includes feeding a sheet at least twice past a printhead assembly for printing an image on both sides of the sheet, wherein in the first and second passes the respective front and back images are aligned with respect to a first edge of the sheet by detecting a skew angle between the first and second edges and applying the skew angle to align the front and back images; and stacking the sheet, wherein the sheet is registered to a predetermined stacking reference direction by one of its edges, and wherein during the stacking, the sheet is registered by its first edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.