Paper tension adjusting device and method for a printer
US5018888A · kind A · utility
4Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1989 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | Sep 11, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J15/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A paper tension adjusting device in which one of the tractors with feeding pins changing feeding apertures in the paper is movable widthwise to adjust widthwise paper tension. The desired tension is determined from paper thickness which is in turn determined from the hammer flight time. Lengthwise tension is adjusted by adjusting paper clampers separated from the tractors. The tension is both widthwise and lengthwise directions is determined by optically sensing the positions of the feeding pin with respect to the aperture in which that pin is engaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.