Printzone media sensor for inkjet printer
US6467900B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Feb 14, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J11/0095
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An inkjet printer having a printhead closely adjacent a platen and a printzone therebetween has first and second juxtaposed counter-rotating feed rolls for transferring recording media from a first location where a media leading edge is located in an entrance nip between the first and second rolls and a second location where a media trailing edge is located in an exit nip between the first and second rolls. Printer control avoids printing to a media free printzone by sensing for the presence of a sheet of recording media within a nip between the primary and secondary feed rolls and selectively enabling and disabling the printer in accordance with the sensed media presence. The transverse dimension of a sheet of recording media may be estimated by multiple sensors and printer carriage travel limited to less than the estimated dimension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.