Process for producing image using laminated oriented cover film

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making electrical device

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430496, 430319, 430524, 430531, 430434, G03C 500, G03C 176

Patent

active

042115604

ABSTRACT:
A process for producing an image which comprises the steps of:
(1) applying to the surface of a substrate the surface of a photosensitive layer, the other surface of the photosensitive layer being adhered to a substantially transparent film support which is soluble or dispersible in a developer consisting essentially of a liquid capable of substantially dissolving or dispersing therein the areas of the layer other than those having a polymeric image produced by imagewise exposure in the step (2) below;
(2) exposing the photosensitive layer, imagewise, to actinic radiation to form a polymeric image in the layer; and
(3) washing away with the developer the film support and the areas of the layer other than those having the polymeric image to form an image of a polymeric material on the substrate. The photosensitive element having on its one side the above-mentioned specific film support and the process have a variety of applications and are useful for producing photoresists which are advantageously used for making printed circuit boards.

REFERENCES:
patent: 2731347 (1956-01-01), Gray
patent: 3404057 (1968-10-01), Neiart
patent: 3443946 (1969-05-01), Grabhofer
patent: 3458311 (1969-07-01), Alles
patent: 3832176 (1974-08-01), Veastraete
patent: 3856527 (1974-12-01), Namb et al.
patent: 3867153 (1975-02-01), MacLachlan
patent: 3895949 (1975-07-01), Akamatsu et al.
patent: 3898086 (1975-08-01), Franer et al.
patent: 4072527 (1978-02-01), Fan
patent: 4126466 (1978-11-01), Roos

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