Process for producing information supports capable of being opti

Details Process for producing information supports capable of being opti Process for producing information supports capable of being opti

1987-03-13

1989-12-19

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

346 11, 346 76L, 3461351, 346137, 369272, 369275, 369283, 369284, 369285, 369287, 369288, 430 1, 430 5, 430 8, 430 11, 430 17, 430 23, 430146, 430147, 430148, 430269, 430321, 430332, 430334, 430367, 430395, 430396, 430390, 430393, 430495, 430945, G03C 518, G03C 534, G03C 500, G01D 526

Patent

active

048882666

ABSTRACT:
The invention relates to a process for producing supports intended for the optical recording and reading of information. A layer containing a diazo compound is deposited onto a metallized substrate. Recording is obtained by exposing the support to light through a mask, the exposed zones of the layer of diazo compound being decomposed. Dry development in ammonia vapors shows up transparent zones and opaque zones corresponding to the information.

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