Device for detachable attachment of a print original to a cylinder
US4174176A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1977 |
| Grant date | Nov 13, 1979 |
| Priority date | — |
| Expiry date | Oct 13, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F9/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In the non-mechanical printing art relating to equipment for reproducing a negative on a photoelectric data carrier, a mechanical device for readily detachably applying a negative to a cylinder in such a manner as to assure flush application of the negative to the cylinder and proper positioning of the negative. The negative is provided with a spring contact strip at the leading edge and a knob contact strip at the trailing edge. The film is wrapped around the cylinder such that springs on the spring contact strip are caused to snap over knobs on the knob contact strip causing a tight wrapping of the film about the cylinder. The spring contact strip and the knob contact strip are positioned in proper registry with the film by the use of round and square locating markers and corresponding holes on the films and the strips respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.