Method and apparatus of applying a solution of a predetermined viscosity to photosensitive material to form a protective coating thereon
US5984539A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Nov 6, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D15/025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a method and apparatus of applying a solution of a predetermined viscosity to photosensitive material to form a protective coating on the photosensitive material. The method and apparatus can be used in a photographic processing device, and the apparatus can be built into an existing or new photographic processor or added on as an accessory. The method and apparatus is utilized to apply a viscous solution to at least one surface of processed photosensitize materials prior to drying in a manner that allows the solution to be uniformly applied to the at least one surface at a specific layer thickness. The viscous solution after drying functions as a protective coating which can protect the processed photosensitize material against scratches and moisture. The apparatus includes a control mechanism which controls the thickness, uniformity and laydown amount of the applied viscous solution so as to insure that a uniform coating that provides protection to the entire surface of the processed photosensitize material is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.