System and method for equalizing multiple moving web velocity measurements in a double reflex printing registration system
US8346503B2 · kind B2 · utility
5Cited by
17References
17Claims
0Family size
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Key dates
| Filing date | Sep 11, 2009 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Aug 11, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0158
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method enables linear web velocities generated with reference to angular velocity signals generated by encoders at different rollers in a double reflex printing registration system to be equalized. The method includes identifying a low frequency component of a first linear velocity of a moving web, identifying a high frequency component of a second linear velocity of the moving web, and computing a linear velocity for the moving web at a roller in a print zone with reference to the identified high frequency component of the second linear velocity and the identified low frequency component of the first linear velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.