Detecting stretch or shrink in print media
US8721030B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2012 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Jul 11, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2029/3935
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A print media in a printing system includes multiple test patterns with each test pattern having one or more marks. Each test pattern can have a different number of marks. A method for detecting size variations in the print media while the print media is moving through the printing system includes scanning the test patterns as the print media is moving in a transport direction to produce test pattern signals, with each signal representing a respective test pattern, and analyzing the measured test pattern signals to determine whether a size variation has occurred in the print media. One or more compensation values can be determined based on the size variation. If a size variation is detected, the operation or setting of one or more components in the printing system can be adjusted based on the one or more compensation values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.