Method for monitoring registration of images printed by a printer
US6065400A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1998 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Oct 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S101/46
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The printer has at least two printing stations which cause images to be printed on a substrate. The printer is capable of registration adjustment. First and second patterns of spaced registration marks are printed onto the substrate by operation of the printing stations. The second pattern partially overlaps the first pattern to form a composite pattern of registration marks. The composite pattern is illuminated and the reflectivity thereof is examined at wavelengths complementary to the colors of the first and second patterns to obtain a reflectivity signature for the composite pattern. The reflectivity signature of the composite pattern (120) is compared with a predetermined signature to determine an adjustment factor for the printer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.