Process for producing negative copies by means of a material bas

Details Process for producing negative copies by means of a material bas Process for producing negative copies by means of a material bas

1984-07-02

1986-03-18

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Forming nonplanar surface

430192, 430193, 430328, 430330, 430302, 430309, 430326, G03F 726, G03F 708

Patent

active

045769010

ABSTRACT:
A process for producing negative relief copies is disclosed in which a light-sensitive material, consisting essentially of (1) a binder which is insoluble in water and soluble in aqueous-alkaline solutions and (2) a light-sensitive ester or amide of a 1,2-benzoquinone-2-diazide-4-sulfonic acid, a 1,2-benzoquinone-2-diazide-4-carboxylic acid, a 1,2-naphthoquinone-2-diazide-4-sulfonic acid, or a 1,2-naphthoquinone-2-diazide-4-carboxylic acid, is imagewise exposed, thereafter heated and, after cooling, exposed again without an original, and subsequently developed by means of an aqueous-alkaline developer. The disclosed process permits the production of negative copies with the aid of a material which yields positive copies when it is processed in a conventional manner.

REFERENCES:
patent: 3264104 (1966-08-01), Reichel
patent: 4104070 (1978-08-01), Moritz et al.
patent: 4196003 (1980-04-01), Watanabe
patent: 4356254 (1982-10-01), Takahashi et al.
patent: 4356255 (1982-10-01), Tachikawa et al.
patent: 4431725 (1984-02-01), Tachikawa et al.
patent: 4439516 (1984-03-01), Cernigliavo et al.
Kosar, "Light Sensitive Systems", 1965; Section 7.4, pp. 339-351.

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