Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...
Patent
1983-02-18
1985-07-02
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Diazo reproduction, process, composition, or product
Composition or product which contains radiation sensitive...
430 28, 430143, 430145, 430175, 430179, 430194, 430196, 430197, G03C 154, G03C 160, G03C 171
Patent
active
045268541
ABSTRACT:
A method for forming a pattern of a non-light-emitting black material on the inner surface of a faceplate of a color cathode ray tube is provided, which comprises the steps of forming a photoresist layer of a photoresist containing a water-soluble bisazidocompound, a water-soluble diazocompound, and a water-soluble polymeric material, on an inner surface of a faceplate of a color cathode ray tube, selectively exposing parts of the photoresist layer using a shadow mask so as to photocure the exposed parts, developing the photoresist layer to remove unexposed parts of the photoresist layer, thereby forming dots of the photoresist, forming a film of a non-light-emitting black material on the inner surface of the faceplate including the dots, and removing the dots and the non-light-emitting black material on the dots so as to form holes in the film of the non-light-emitting black material.
REFERENCES:
patent: 2695846 (1954-11-01), Mally
patent: 2937085 (1960-05-01), Seven et al.
patent: 3387975 (1968-06-01), Tamura
patent: 3679419 (1972-07-01), Gillich
patent: 3917794 (1975-11-01), Akagi et al.
patent: 4347300 (1982-08-01), Shimazu et al.
Research Disclosure, No. 134, pp. 48-49, 6/1975.
Itou Takeo
Watanabe Shingo
Bowers Jr. Charles L.
Tokyo Shibaura Denki Kabushiki Kaisha
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