Automatic document feeder
US5280899A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1993 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Jan 7, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H9/106
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a primary paper feeding device, a document is conveyed from a document stock section to a pair of registration rollers by a first conveying device. The document conveyed to the registration rollers is further conveyed forward in a downstream direction by the registration rollers. When the lead (downstream) edge of the document arrives at a predetermined first reference position downstream of the registration rollers, document conveying by the registration rollers terminates. In this way, the document is conveyed such that the trailing edge thereof does not pass through the registration rollers. Thereafter, when a document change signal occurs, the registration rollers again are driven so that the document advances toward a position for document reading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.