Method of moving a document for stationarily exhibiting both sides thereof
US4052128A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1974 |
| Grant date | Oct 4, 1977 |
| Priority date | — |
| Expiry date | Nov 25, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/625
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A recorder, as for photographing original documents on microfiche, the documents selectively having information on one or both sides, which information is to be successively recorded at high speed. After initial transport by a feed belt, a first vacuum-retaining belt having document-present actuated controls moves the document to a photographing position. Thereafter this belt is reversed in direction and the document is taken from the first belt to a second vacuum-retaining belt by pneumatic force. Adhering to the second belt, the document is rotated 180.degree., side for side, and discharged again to the first belt. A second forward motion of the first belt returns the document to the photographing station, second side up. Further forward motion discharges the document. The images upon the fiche have the same orientation for both sides of the document for easy reading. Typically, one-sided documents are turned over, but are not photographed on the second (blank) side. An electronic logic system of the state counter type correlates the several steps of document handling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.