Phototypesetter film feed device
US4046372A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1976 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Aug 4, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H20/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Film transport apparatus for phototypesetters. The apparatus includes upper and lower guide plates supporting pinch and drive rollers, respectively, between which a strip of film is frictionally fed. A pair of hold-down rollers are provided to press the upper guide plate against the lower guide plate to maintain the pinch and drive rollers properly positioned against each other, and also to help keep the apparatus locked together during operation. The upper guide plate is designed to be laterally slidable relative to the lower guide and further is provided with a pair of notches cut into its sides. Accordingly, to load film into the apparatus, it is only necessary to slide the upper guide plate until the hold-down rollers become aligned with the notches at which position the upper guide plate can be lifted up and away from the lower guide plate to separate the pinch and drive rollers for film loading. The apparatus can thereafter be reassembled by lowering the upper guide plate and sliding it back in the opposite direction until the hold-down rollers again engage the plate. Means are additionally provided to adjust the clearance between the upper and lower guide plates by adjusting…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.