http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1205422-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03d0f52bb4069f8a19d70dcfb697c67a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03F7-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03F7-06 |
| filingDate | 1967-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1970-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1205422-A |
| titleOfInvention | A process for preparing a lithographic printing plate |
| abstract | 1,205,422. Lithographic plates. FUJI SHASHIN FILM K. K. Aug. 11, 1967 [Aug.12, 1966], No. 37117/67. Headings G2C and G2M. Lithographic printing plates are prepared by developing an imagewise exposed element containing at least one hydrophilic silver halide emulsion layer with an aqueous alkaline solution in the presence of a developing agent which is converted into an oleophilic dimer when oxidized, so that an olephilic image of the dimer is formed. Specified developing agents are thio-indoxyl and its 6-methyoxy and 6-ethoxy derivatives, indoxyl, 4-hydroxyiso-carbostyril, 4-methoxy and 4-ethoxy 1-naphthols, pyrogallol 1, 3-dimethyl ether, 0-aminophenyl, 2-amino-3, 5-dimethyl phenol, 1 -phenyl-3-methyl-4-amino-5-pyrazole, 1, 5- dihydroxy naphthalene, hydroquinone, and N- ethylphenylenediamine and various N-and/or 3- substituted derivatives thereof. The developing agent may be in the alkaline soln, the emulsion or a layer between the emulsion and the support. The oleophilic image may be formed in the emulsion layer or, if a positive image is required, in a fogged silver halide emulsion layer overlying the photo-sensitive emulsion layer. Positive images may also be formed by using a direct positive emulsion, or by carrying out a first development with a non-tanning developing agent which does not form an oleophilic dimer and then a second development with a solution containing a fogging agent and the dimerizable developing agent. After development the elements are preferably processed in a stop-bath. |
| priorityDate | 1966-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.