http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-678322-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9799ffcda2dbb45041a5ab0fd08dd5fe |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-31649 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S430-16 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-038 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-039 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-091 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03F7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03F7-039 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03F7-038 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03F7-09 |
| filingDate | 1950-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1952-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-678322-A |
| titleOfInvention | Sensitive photographic elements for lithography |
| abstract | 678,322. Photographic elements for lithography. KODAK, Ltd. Feb. 9, 1950 [Feb. 9, 1949], No. 3375/50. Class 98 (ii). A laminated cellulose ester sheet is provided with an antihalation stratum in the laminated interface and a light-sensitized hydrolysed cellulose ester stratum on one of the outer surfaces. The element may be made by coating a sheet of fully esterified cellulose ester such as the triacetate, acetate propionate or propionate with antihalation material such as the blueabsorbing dye p - nitrobenzene - azo - N - (# - hydroxyl-ether)-o-chloroaniline dissolved in a mixture of #-methoxy ethanol, acetone and methanol, drying; fixing to a similar, clear cellulose ester sheet with a dope of cellulose triacetate in methylene dichloride, ethylene dichloride and methanol, drying; surface hydrolysing with alcoholic caustic alkali, washing, drying and sensitizing with chromium, iron or uranium salts as described in Specifications 617,227, 678,321 or 678,323. For higher antihalation density both sheets may be dyed before lamination. Lithographic printing plates may be made by exposure under a negative and washing with an alkaline solution or such containing an oxidizing agent, which leaves exposed areas of cellulose ester receptive to greasy printing inks and non-exposed areas of hydrolysed cellulose ester ink-repellant when moistened. |
| priorityDate | 1949-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.