Printing plate registration
US8146498B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | May 20, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C1/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for determining a position of a mechanical edge of a reference edge of a sheet of recording media relative to a first edge of a drum slot in a cylindrical surface of an imaging drum, the method includes: mounting the sheet of recording media on the imaging drum in an orientation wherein the reference edge extends along the cylindrical surface of the imaging drum in a substantially axial direction and wherein the reference edge extends over the first edge of the drum slot; establishing at least one acute apex diffuse light source in the slot; capturing at least one digital camera image of the reference edge and the at least one acute apex diffuse light source; and determining from the at least one digital camera image a location of at least one point on the mechanical edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.