Paper transportation control system
US4424964A · kind A · utility
9Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1981 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | Oct 16, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J13/0054
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The retard roll in a paper transport mechanism is rotated by the feed roll to transport manually supplied paper when a photodetector indicates that manually supplied paper is present, the retard roll is substantially stationary and serves its normal purpose of preventing more than one sheet at a time from being transported by the feed roll as it rotates in an opposite direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.