Overlapped document detector
US4397460A · kind A · utility
12Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1981 |
| Grant date | Aug 9, 1983 |
| Priority date | — |
| Expiry date | Jul 6, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/1912
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An overlapped document detector for a document handling apparatus comprises an air knife in the primary document path to separate overlapped documents and forward them along separate ones of two secondary paths. Optical detectors focused on each secondary path, detects documents to detect an overlapped condition. A vacuum is created to maintain the documents in their respective secondary paths for detection purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.