Positioning device for mounted film
US4575231A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1984 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Mar 9, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/6278
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device for positioning a film set to a mount in an image printing apparatus comprises several elements. A movable member moves the mount in a direction parallel to a light axis of an optical printing system. A film positioning member, made of a light permeable material, is secured to a casing at a position between the film set in the mount and a light source for setting a film reference position in the optical printing system. Thus, the film is intimately contacted by the film positioning member at the film reference position when the movable member is moved towards the film positioning member during an image printing operation of the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.