Photographic film carrier
US4922289A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1989 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Apr 3, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D15/003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic film carrier holds a photographic film firm and flat to place picture frames of the photographic film at a position of a photographic apparatus where each picture frame is projected for exposure or inspection. The film carrier is formed with a framing mask opening for holding a picture frame of the photographic film firm and flat in the framing mask opening and is provided with motor driven film transporting rollers for transporting the photographic film. A marking device is disposed downstream of the framing mask opening for forming, in one side margin of the photographic film, a perforation as a cut-mark along which the photographic film is to be cut transversely. A detector is mounted on the film carrier for detecting a transported length of the photographic film including a predetermined number of picture frames. The marking device is actuated by a controller to form a cut-mark when the detector detects a predetermined length of the photographic film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.