http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0254626-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fbcc05a7d210497940a8e5c272a256f6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1abfe1f185fd3abe7ccde418335f5492 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B27-323 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B21-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B21-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B27-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-08 |
| filingDate | 1987-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c30db276d53ecb9e69f5deed94839ac7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ffdebdd5bc2ace2ef5c59b4aa5beb916 |
| publicationDate | 1988-01-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0254626-A2 |
| titleOfInvention | High precision photoreduction process and related apparatus |
| abstract | A process for high resolution high accuracy photoreduction of radiographs, a rotatable photographic copy stand for the photoreduction process, and a high resolution high accuracy microfilm reader with built-in measuring capabilities are shown. The photoreduction process employs a camera with high precision optics, a high resolution copy film, and a first developing solution containing 0.014 to 0.025 moles per liter of a 3-pyrazolidone as the primary developing agent plus a lesser amount of a secondary developing agent, in a reversal process, to yield positive images having gamma values of 1.00 to 1.05. The copy stand has multiple workstations (40a, 40b, 40c, 40d) mounted on a rotatable frame, and several lightboxes (34). The microfilm reader employs high precision optics throughout, and possesses a variable magnification objective lens, a beam splitter, ultrawide-angle eyepieces, and a movable measuring reticle, the image of which is superimposed upon the image from the objective lens for accurate measurement of features shown on a film being examined. By means of the disclosed process and apparatus, industrial radiographs or other sorts of X-rays are photoreduced and later reenlarged for reexamination and measurement of selected features, with an overall dimensional accuracy of at least 99.9%. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114035336-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114035336-A |
| priorityDate | 1986-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.