GB388774A - Improvements in and relating to colour-photography - Google Patents
Improvements in and relating to colour-photographyInfo
- Publication number
- GB388774A GB388774A GB15497/31A GB1549731A GB388774A GB 388774 A GB388774 A GB 388774A GB 15497/31 A GB15497/31 A GB 15497/31A GB 1549731 A GB1549731 A GB 1549731A GB 388774 A GB388774 A GB 388774A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emulsion
- coating
- pont
- layer
- dyed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/20—Subtractive colour processes using differently sensitised films, each coated on its own base, e.g. bipacks, tripacks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Filters (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
388,774. Colour photography. DU PONT FILM MANUFACTURING CORPORATION, (formerly DU PONT PATHE FILM MANUFACTURING CORPORATION), 35, West 45th Street, New York, U.S.A.) May 27, 1931, No. 15497. Convention date, June 20, 1930. [Class 98 (ii).] In a plate or film bi-pack having two adjacent sensitive layers, an integral non-dyed transparent water-permeable colloid layer or coating is provided on one or both of these adjacent layers in order to improve the image definition on the rear sensitive layer. Such coating 4<1> may for example be on the rear emulsion 5<1>, and the front emulsion 2<1> may be dyed with a filter dye. Alternatively this front emulsion may have a filter layer thereon, e.g. one in accordance with Specification 369,799.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US462471A US1900459A (en) | 1930-06-20 | 1930-06-20 | Multipack negative system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB388774A true GB388774A (en) | 1933-02-27 |
Family
ID=23836524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15497/31A Expired GB388774A (en) | 1930-06-20 | 1931-05-27 | Improvements in and relating to colour-photography |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1900459A (en) |
| GB (1) | GB388774A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL65456C (en) * | 1946-09-27 | |||
| BE476257A (en) * | 1946-09-27 |
-
1930
- 1930-06-20 US US462471A patent/US1900459A/en not_active Expired - Lifetime
-
1931
- 1931-05-27 GB GB15497/31A patent/GB388774A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1900459A (en) | 1933-03-07 |
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