Proofing machine
US4721383A · kind A · utility
3Cited by
14References
8Claims
0Family size
Inventor
Key dates
| Filing date | Jan 21, 1987 |
| Grant date | Jan 26, 1988 |
| Priority date | — |
| Expiry date | Jan 21, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is disclosed in accordance with this invention a proofing machine in which the means for exposing the proof paper comprises a light carriage adapted to be moved by the operator to an open position for loading proof paper and negatives and a closed position where the exposure is initiated and thereafter automatically terminated at the end of the exposure cycle and there is provided means for exposing a plurality of proofs of the same size simultaneously as well as to accommodate proofs of different size comprising a plurality of separate and selectively usable vacuum systems and systems of locator pins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.