Device for sensing sheet transport condition
US4641272A · kind A · utility
10Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1984 |
| Grant date | Feb 3, 1987 |
| Priority date | — |
| Expiry date | Mar 28, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H7/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In an electrophotographic copier, while a document is transported toward a predetermined position on a glass platen, its lateral dislocation and skew with respect to a document transport path as well as an amount of the dislocation and a direction of the skew are commonly sensed by a single sensor. The single sensor is positioned adjacent to one of laterally opposite ends of the transport path and has sensing surface of a predetermined area. While the document moves past the sensing surface of the sensor, the sensor generates a signal which corresponds to an area of the sensing surface which is occupied by the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.