Method and apparatus for continuous liquefaction of gelled photographic materials
US5191910A · kind A · utility
2Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1990 |
| Grant date | Mar 9, 1993 |
| Priority date | — |
| Expiry date | Nov 14, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus for continuously liquefying a gelled photographic material for coating on a substrate is disclosed. The material is advanced throughout the liquefaction apparatus and on to the substrate coating system as a substantially undisrupted mass. The technique is particularly useful for liquefying small amounts of material at a time, because system hold-up volume and waste is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.