Flyer determination and elimination for side edge electronic registration
US6511239B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2000 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Mar 22, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00586
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention generally relates to a printing apparatus including a marking device, the marking device being capable of placing an image on a sheet fed therein, and outputting the sheet; a feed path, by which sheets are fed from a sheet supply to the marking device; a duplex path, by which sheets output from the marking device are re-fed to the marking device; a first sensor, outputting a first position signal relating to a location of a side edge as each sheet passes through the feed path; a second sensor, outputting a second position signal relating to a location of a side edge as each sheet passes through the duplex path; and an image placement controller associated with the marking device, the image placement controller retaining first position signals for a plurality of sheets passing through the feed path and second position signals for a plurality of sheets passing through the duplex path, and calculating new average paper positions for each sheet in response to at least one of the first position signals and the second position signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.