Method for achieving accurate page margins on a media and duplex imaging apparatus thereof
US7483668B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2006 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Jul 21, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04758
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for achieving accurate page margins on a media and a duplex imaging apparatus thereof. The method comprises: detecting a leading edge position by an edge sensor and a first left-to-right position of the media by an alignment sensor in a first imaging path; imaging a first side of the media in a print zone of the duplex imaging apparatus; removing the media from the print zone and disposing the media in a second imaging path; detecting a leading edge position by the edge sensor and a second left-to-right position of the media by the alignment sensor; determining a carrier reset distance by calculating a difference between first and second left-to-right positions, and shifting a print image by a distance substantially equal to the carrier reset distance thereby achieving accurate page margins for imaging a second side of the media with the print image. In another embodiment, the first left-to-right position can be determined by feeding the media into a preset first left-to-right position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.