Method and apparatus for sensing a register discrepancy in a multi-color printed item, and register control system and register marks
US6553906B1 · kind B1 · utility
7Cited by
11References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2000 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Nov 10, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41P2233/52
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for sensing a register discrepancy (r) in a multi-color printed item, the position of at least one register mark (1, 1′) that is associated with one color being sensed with respect to the position of at least one register mark (2, 2′) that is associated with at least one further color, and any density register discrepancy (r) using a measurement window being ascertained from discrepancies in the actual relative position (3) with respect to the reference relative position (4). The invention, furthermore, concerns an apparatus, a register control system, and register marks (1, 1′, 2, 2′).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.