GB158021A - Improvements in and relating to processes of dye transfer printing from photographicnegatives - Google Patents
Improvements in and relating to processes of dye transfer printing from photographicnegativesInfo
- Publication number
- GB158021A GB158021A GB2391019A GB2391019A GB158021A GB 158021 A GB158021 A GB 158021A GB 2391019 A GB2391019 A GB 2391019A GB 2391019 A GB2391019 A GB 2391019A GB 158021 A GB158021 A GB 158021A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prints
- dye
- papers
- processes
- 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)
- Printing Methods (AREA)
Abstract
158,021. Donisthorpe, F. W., and Dye Impression Photos, Ltd. Sept. 30, 1919. Dye-impression processes; developing and after treatment; finishing.-Relates to the process of printing positives from dyed silver negatives as described in Specification 13874/07. To obtain a satisfactory absorption of the dye into the undeveloped parts of the silver negative, the negative is treated in a preparing bath containing a sufficient quantity of an acid such as oxalic acid. A preparing.bath containing vanadium oxalate with an excess of oxalic acid and a ferricyanide may be used. The base on which the dye transfer prints are made may be coated with hardened gelatine, and dyes, such as patent blue, are used which have an affinity not only for soft gelatine but also for hardened gelatin. Commercial papers such as baryta coated papers or art papers may be used for the prints. The prints may be enhanced by coating the print when dry with clear transparent oil or varnish to render the surface of the print transparent. Such treatment also makes the prints waterproof.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2391019A GB158021A (en) | 1919-09-30 | 1919-09-30 | Improvements in and relating to processes of dye transfer printing from photographicnegatives |
FR518229A FR518229A (en) | 1919-09-30 | 1920-06-29 | Dye transfer process from photographic negatives to prints |
DED38314D DE360550C (en) | 1919-09-30 | 1920-09-23 | Process for making hydrotypical printing plates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2391019A GB158021A (en) | 1919-09-30 | 1919-09-30 | Improvements in and relating to processes of dye transfer printing from photographicnegatives |
Publications (1)
Publication Number | Publication Date |
---|---|
GB158021A true GB158021A (en) | 1921-02-03 |
Family
ID=10203274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2391019A Expired GB158021A (en) | 1919-09-30 | 1919-09-30 | Improvements in and relating to processes of dye transfer printing from photographicnegatives |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE360550C (en) |
FR (1) | FR518229A (en) |
GB (1) | GB158021A (en) |
-
1919
- 1919-09-30 GB GB2391019A patent/GB158021A/en not_active Expired
-
1920
- 1920-06-29 FR FR518229A patent/FR518229A/en not_active Expired
- 1920-09-23 DE DED38314D patent/DE360550C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR518229A (en) | 1921-05-21 |
DE360550C (en) | 1922-10-04 |
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