GB1384535A - Information-wise photo-activated bleaching - Google Patents
Information-wise photo-activated bleachingInfo
- Publication number
- GB1384535A GB1384535A GB955571A GB955571A GB1384535A GB 1384535 A GB1384535 A GB 1384535A GB 955571 A GB955571 A GB 955571A GB 955571 A GB955571 A GB 955571A GB 1384535 A GB1384535 A GB 1384535A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- completes
- group
- aryl
- sulphur
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Plural Heterocyclic Compounds (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
1384535 Photographic bleach-out materials AGFA-GEVAERT 5 April 1972 [15 April 1971] 9555/71 Heading G2C A photographic bleach-out material comprises a supported or self-supporting layer of a binder and photo-sensitive composition comprising (i) an organic polyhalogen yielding free radicals on exposure (ii) a cyanine, fluorescein or rhodamine dye or a coloured quinodimethane compound capable of being bleached by the free radicals and (iii) a compound accelerating the bleaching and being of one of the following formulae I-IX: (VII) R 4 -N=N-SO 2 -R 5 , (II) D-Z-Y-Z-D:- wherein D is a dialkylamino group, R is H or alkyl, Z is phenylene or vinylphenylene, X is oxygen or sulphur, Y is an electron attracting group e.g. -CO-, -CS-, -SO-, -SO 2 - or -CO-CO-, Q 1 completes a ring in which the group CX is linked through a conjugated system to the dialkylamine group, Q 2 completes a ring wherein # D-Z-C- is linked through a conjugated system to an electron-attracting group or completes an electronegative heterocyclic ring, R 1 and R 2 and R 3 are alkyl, Q is an aromatic ring or ring system, R 4 and R 5 are aryl or substituted aryl, Q 3 is -SO 2 - or-CO-, X 1 is oxygen, sulphur or =N-R<SP>1</SP> where R<SP>1</SP> is H or aryl and Z completes a 5- or 6- membered heterocyclic ring or ring system. Specified binders are cellulose ethers and esters, vinyl polymers and synthetic rubbers. In the examples, the compositions using ethyl cellulose as binder were coated on a polyester support and imagewise exposed to bleed out the exposed areas. The image is fixed by heating to between 90‹ and 200‹C.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB955571A GB1384535A (en) | 1971-04-15 | 1971-04-15 | Information-wise photo-activated bleaching |
BE781720A BE781720A (en) | 1971-04-15 | 1972-04-06 | VERVAARDIGING VAN FOTOGRAFISCHE BEELDEN DOOR FOTO-GEACTIVEERDE BLEKING |
DE19722216500 DE2216500A1 (en) | 1971-04-15 | 1972-04-06 | Photosensitive recording material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB955571A GB1384535A (en) | 1971-04-15 | 1971-04-15 | Information-wise photo-activated bleaching |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1384535A true GB1384535A (en) | 1975-02-19 |
Family
ID=9874257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB955571A Expired GB1384535A (en) | 1971-04-15 | 1971-04-15 | Information-wise photo-activated bleaching |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE781720A (en) |
DE (1) | DE2216500A1 (en) |
GB (1) | GB1384535A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0246885A3 (en) * | 1986-05-20 | 1988-06-22 | Japan as represented by Director-General, Agency of Industrial Science and Technology | A contrast-enhancing agent for photolithography |
DE10203939A1 (en) * | 2002-02-01 | 2003-08-21 | Few Chemicals Chemiepark Bitte | New N-alkyl-benzoxazol-2-yl, -benzimidazol-2-yl and indolin-2-yl dimethine merocyanine dyes are used as sensitizers for free radical initiators in photopolymerizable composition, especially for lithographic printing plate production |
-
1971
- 1971-04-15 GB GB955571A patent/GB1384535A/en not_active Expired
-
1972
- 1972-04-06 BE BE781720A patent/BE781720A/en unknown
- 1972-04-06 DE DE19722216500 patent/DE2216500A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
BE781720A (en) | 1972-10-06 |
DE2216500A1 (en) | 1972-10-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3284205A (en) | Benzotriazole and heterocyclic ketimide activators for leuco compounds | |
US3813245A (en) | Photochromic composition containing polyhalogenated compound,spiropyran compound and sensitizer and the use thereof | |
GB1066965A (en) | Photographic print-out materials | |
US3140947A (en) | Graphic data copy sheet and method of using it | |
SE7603029L (en) | SEMICONDUCTIVE COMPOSITION | |
GB1495317A (en) | Silver halide colour photographic materials | |
GB1095567A (en) | ||
GB1173328A (en) | Photosensitive Compositions | |
KR850001443A (en) | Photoresist composition | |
GB1384535A (en) | Information-wise photo-activated bleaching | |
GB1452319A (en) | Silver halide photosensitive material | |
US3820995A (en) | Photochromic material containing a spiropyran compound a polyhalogenated hydrocarbon photoactivator and an acetanilide sensitizer and the use thereof in photoimaging | |
GB1076368A (en) | Light-sensitive copying material | |
JPS554061A (en) | Dry type image forming material | |
GB959037A (en) | Photosensitive compositions | |
US3730734A (en) | Light-sensitive photopolymerizable material containing photochromic material | |
US3342604A (en) | Non-silver photosensitive printout compositions | |
US3272635A (en) | Compositions containing leuco xanthene dyes and suitable activators | |
GB1399751A (en) | Photobleachable dyes and photographic materials containing them | |
GB1293111A (en) | Light-sensitive materials | |
GB1213823A (en) | Light sensitive reproduction sheet and method and coating composition therefor | |
ES406330A1 (en) | Light-desensitizable imaging sheet | |
US3660096A (en) | Speed increasing additives for non-silver light sensitive systems | |
US3342595A (en) | Non-silver photosensitive printout compositions | |
GB1423620A (en) | Photosensitive compositions |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |