GB484411A - Improvements in the production of film blanks for imbibition printing - Google Patents
Improvements in the production of film blanks for imbibition printingInfo
- Publication number
- GB484411A GB484411A GB3004036A GB3004036A GB484411A GB 484411 A GB484411 A GB 484411A GB 3004036 A GB3004036 A GB 3004036A GB 3004036 A GB3004036 A GB 3004036A GB 484411 A GB484411 A GB 484411A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- hardening
- imbibition printing
- washed
- solution
- 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
- G03C7/22—Subtractive cinematographic processes; Materials therefor; Preparing or processing such materials
- G03C7/25—Dye-imbibition processes; Materials therefor; Preparing or processing such materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Abstract
484,411. Imbibition printing films. BROOKES, N. E. (Technicolor Motion Picture Corporation) Nov. 4, 1936, No. 30040. [Class 98 (ii)] Gelatin film blanks for imbibition printing are prepared by treating the blank in a solution of a hardening agent, the pH of the film and of the hardening bath being previously adjusted to produce a pH value corresponding to the isoelectric point of the gelatin during the hardening process. The film may be subsequently washed in a bath maintained at the isoelectric point. The process may be used for films for imbibition printing in colours, on which a sound track has been formed in developed silver. For example, the sound track is developed in a non-hardening metol developer, the film is washed in water at a pH of 7, fixed in neutral hypo solution and again washed in water at a pH of 7. It is then hardened in a solution of chrome alum of 50-52À5 gms. per litre having a pH value adjusted to 3À45 by addition of ammonia and again washed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3004036A GB484411A (en) | 1936-11-04 | 1936-11-04 | Improvements in the production of film blanks for imbibition printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3004036A GB484411A (en) | 1936-11-04 | 1936-11-04 | Improvements in the production of film blanks for imbibition printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB484411A true GB484411A (en) | 1938-05-04 |
Family
ID=10301294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3004036A Expired GB484411A (en) | 1936-11-04 | 1936-11-04 | Improvements in the production of film blanks for imbibition printing |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB484411A (en) |
-
1936
- 1936-11-04 GB GB3004036A patent/GB484411A/en not_active Expired
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