Tapered pressure pad to prevent film scratching
US4203655A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1979 |
| Grant date | May 20, 1980 |
| Priority date | — |
| Expiry date | Jan 2, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/265
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Method and fluid applicator apparatus usable in a photographic film cassette and including a pressure pad having a film engaging surface for slidably supporting successive incremental portions of a strip of photographic film in a given plane as the film strip progressively advances in a given direction across a nozzle opening through which processing fluid is deposited on the film's emulsion surface having a particle engaging surface depending from the film engaging surface and facing in a direction opposite to the direction to divert particles impinging thereagainst in a manner and direction so that they are prevented from being caught by the particle engaging surface of the pressure pad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.