Imaging print media
US6640716B1 · kind B1 · utility
2Cited by
11References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2002 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jul 30, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J11/42
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for imaging material. A section of a medium is photographed with a first camera having a first field of view. The medium is advanced along a feed direction and the section is photographed with a second camera having a second field of view. At least one of the first field of view and the second field of view is shifted from a nominal location by one or more reflective surfaces. An actual advance of the medium is compared with an intended advance of the medium and it is determined whether at least one of a media advance error and a dimensional change in the media exists in response to the comparing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.