http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-966694-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b73bb5b611ad02b686a7967bc6ca3412 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S159-19 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-705 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-103 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G5-153 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-49 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03G9-0926 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D471-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-49 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03G5-153 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-705 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D471-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03G9-09 |
| filingDate | 1960-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1964-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-966694-A |
| titleOfInvention | The production of copies of graphic originals by successive exposures to light and to heat producing radiation |
| abstract | 966,694. Copying material comprising both light- and heat-sensitive layers. MINNESOTA MINING & MANUFACTURING CO. Aug.10, 1960 [Aug. 10, 1959], No. 27747/60. Headings G2C and G2H. [Also in Division H1] Copies of graphic originals are produced on a sheet having a visibly heat-sensitive layer and a co-terminous light-sensitive layer by exposing the light-sensitive layer to a light-image of the original to produce, if need be by means of a developing step, a differentially radiation absorptive pattern in said layer, and irradiating said pattern to form a corresponding heat pattern and hance a visible image in the heat-sensitive layer. Binders e.g. ethyl cellulose, polyvinyl pyrollidone, gelatin, polyvinyl butyral, are included in the light- and heat-sensitive layers which may be on the same or opposite sides of a support, the light-sensitive layer being between the thermographic layer and the support only if the support is transparent e.g. transparentized paper of polyester. The support - may be omitted if the layers are sufficiently selfsupporting. Light sensitive materials yielding visible but impermanent images on exposure are print out materials containing silver nitrate in polyvinyl pyrollidone, blue print materials comprising ferric ammonium citrate and potassium ferricyanide, light-sensitive electron donor material such as zinc oxide, silver-activated zinc sulphide, or a photochromic compound, e.g. cobalt triethylenediamine persulphate, in combination with an electron acceptor material such as silver nitrate or gold chloride and chloroplatinic acid. These impermanent images finally result in a thin uniformly fogged layer but this may be avoided in the care of the silver nitrate print-out and blue print materials by washing with water or a dilute solution of potassium bichromate. Light-sensitive materials yielding latent images requiring appropriate development to provide visible images which need fixing if they are to be permanent are silver halide, diazo and zinc oxide-in-resin electrophotographic materials. If in developing the charge image formed on the electrophotographic material, a coloured developer containing a fusible substance such as rosin or polythene is used the heat exposure fixes the developer in the non lightexposed areas but a fusible developer is not required. The thermographic materials may comprise materials which react on heating to give coloured products such as ferric stearate and tert-butyl catechol or gallic acid; ferric stearate and an alcohol insoluble precipitate formed from hexamethylenetetramine and pyrogallic acid; or silver behenate, behenic acid, and protocatechnic acid; or a heat-transparentizable opaque layer as of fatty oil wax particles covering a thin layer containing titanium dioxide and an infra-red transmitting blue lake pigment. Specifications 673,244 and 810,863 are referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4006018-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2152686-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3945822-A |
| priorityDate | 1959-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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