GB1140262A - Photographic dye bleach-out process - Google Patents
Photographic dye bleach-out processInfo
- Publication number
- GB1140262A GB1140262A GB2114366A GB2114366A GB1140262A GB 1140262 A GB1140262 A GB 1140262A GB 2114366 A GB2114366 A GB 2114366A GB 2114366 A GB2114366 A GB 2114366A GB 1140262 A GB1140262 A GB 1140262A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- bleaching
- dye bleach
- photographic dye
- bleachable
- 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
- G03C7/02—Direct bleach-out processes; Materials therefor; Preparing or processing such materials
-
- 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
- G03C1/00—Photosensitive materials
- G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
- G03C1/725—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing inorganic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
1,140,262. Photographic dye bleach-out process. KEUFFEL & ESSER CO. May 12, 1966 May 13, 1965], No.21143/66. Heading G2C. A photographic dye bleach-out material having a layer containing a light-bleachable coloured dye is imagewise exposed to light at an elevated temperature to increase the bleaching rate. The layer may also contain, as bleaching accelerators, halogenated hydrocarbons such as carbon tetrachloride and carbon tetrabromide, and polymers such as cellulose acetate, polyvinyl butyral, acrylic resin, nitrocellulose and polyvinyl chlorideacetate. A number of light-bleachable cyanine and merocyanine dyes are specified. Elevated temperatures mentioned range from 41‹- 90‹ C. Examples are given, and include a reflex exposure to infrared and light in a thermographic machine in which exposure the bleaching is accelerated in the heated image areas to give a negative image.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45563865A | 1965-05-13 | 1965-05-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1140262A true GB1140262A (en) | 1969-01-15 |
Family
ID=23809649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2114366A Expired GB1140262A (en) | 1965-05-13 | 1966-05-12 | Photographic dye bleach-out process |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1572079A1 (en) |
GB (1) | GB1140262A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0605331A1 (en) * | 1992-12-30 | 1994-07-06 | Minnesota Mining And Manufacturing Company | Bleaching of dyes in photosensitive systems |
-
1966
- 1966-05-03 DE DE19661572079 patent/DE1572079A1/en active Pending
- 1966-05-12 GB GB2114366A patent/GB1140262A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0605331A1 (en) * | 1992-12-30 | 1994-07-06 | Minnesota Mining And Manufacturing Company | Bleaching of dyes in photosensitive systems |
Also Published As
Publication number | Publication date |
---|---|
DE1572079A1 (en) | 1970-02-19 |
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