Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Diazo-type process – i.e. – producing dye image by reacting...
Patent
1978-12-04
1981-08-04
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Diazo reproduction, process, composition, or product
Diazo-type process, i.e., producing dye image by reacting...
430141, 430148, 430150, G03C 502, G03C 518
Patent
active
042823005
ABSTRACT:
A method and apparatus for producing a highly readable diazo copy from a blue line original. An illumination source provides actinic energy which is substantially absorbed by the blue image of a diazo blue line print and in which no substantial exposure of the diazo paper can occur from energy which is non-responsive to the blue image. The light source produces major energy in the range of about 4600 to 5900 Angstroms. A filter or other means is provided to remove any spurious wavelengths which are non-responsive to the blue image and which can expose the diazo paper.
REFERENCES:
patent: 3260599 (1966-07-01), Lokken
patent: 3408192 (1968-10-01), Acbi
patent: 3536490 (1970-10-01), Hochberg
patent: 3964911 (1976-06-01), Robillard
Kosar, Light Sensitive Systems: (1965, by John Wiley & Sons, Inc., pp. 196-201).
Dinaburg, M. S., "Photosensitive Diazo Cpds", The Focal Press, 1964, pp. 145-147.
Kosar, J., "Light-Sensitive Systems", J. Wiley & Sons, 1965, pp. 302-303.
Bowers Jr. Charles L.
Eliott Industries
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