Circulating type of automatic document feeding apparatus and duplex copying apparatus provided with said apparatus
US4970543A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1988 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Jun 28, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00189
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A circulating type of automatic document feeding apparatus comprising a document hopper which is adapted to take out the top document from the hopper or take it out from the bottom to return in onto the topmost side, a first carrying means for carrying the document form the document hopper to a first exposure portion, a document presentation portion having the first exposure portion and the second exposure portion, a second carrying means which is equipped with an inside and outside inverting means for inverting the carrying direction of the document between the first exposure portion and the second exposure portion, and a third carrying means for returning the document to the document hopper from the second exposure portion. One face of the duplex document may be exposed in the first exposure portion to continuously expose the other face thereof in the second exposure portion, so that the copying operation of the duplex document may be effected at higher speeds and furthermore with considerably reduced operations on the part of the operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.