Element for thermoplastic recording

Details Element for thermoplastic recording Element for thermoplastic recording

1979-08-06

1981-08-04

Silverman, Stanley S.

Radiation imagery chemistry: process, composition, or product th

Holographic process, composition, or product

Composition or product or process of making the same

346 77E, 3461351, 346151, 358 2, 428333, 428336, 428433, 428458, 428688, 428913, 428918, 430 50, G03C 1600

Patent

active

042822955

ABSTRACT:
In a thermoplastic-photoconductor holographic recording medium in the form of several transparent layers over a transparent substrate, such as an optically transparent electrically conductive layer, then a photoconductor layer and a thermoplastic layer over such as glass or Mylar, a conventional material such as gold or platinum has been used as a transparent conductive layer. It is desired to use a less precious metal such as nickel-chromium (NiCr) as the conductive layer, however a limitation has been found in that an unwanted dark charge injection occurs from the NiCr to the photoconductive layer. This causes poor charge acceptance and therefore results in poor halogram formation. Herein a mono atom thick layer of the NiCr is treated and becomes on oxide layer which forms an effective charge blocking layer to dark charge injection.

REFERENCES:
patent: 3445281 (1969-05-01), Sullivan
patent: 3819369 (1974-06-01), Trubisky
patent: 4012253 (1977-03-01), Gange
patent: 4131462 (1978-12-01), Lee et al.
patent: 4163667 (1979-08-01), Wysocki

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