Document-skew detection with photosensors
US5021676A · kind A · utility
21Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1989 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | Oct 10, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J15/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed are Power Encoder means for imprinting MICR characters on checks, with optical check-sensing means disposed along a check-transport path, including optical skew-sensor means including a pair of area-photo-sensor means, one on each side of the check whereby the differential output thereof indicates "degree of skew".
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.