Polyvinyl blocking layer for preventing charge injection in a th

Details Polyvinyl blocking layer for preventing charge injection in a th Polyvinyl blocking layer for preventing charge injection in a th

1980-10-06

1981-08-04

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

Holographic process, composition, or product

430 50, 430 64, 430909, G03G 514, G03H 102

Patent

active

042822947

ABSTRACT:
Charge leakage can occur at a photoconductor-conductor electrode interface of a thermoplastic photoconductive holographic recording medium. This reduces the charge contrast and causes poor performance of the thermoplastic-photoconductive device. In the present invention there is provided a blocking layer of polyvinyl alcohol or polyvinyl butyral between the conductive layer and the photoconductive layer.

REFERENCES:
patent: 3819369 (1974-06-01), Trubisky
patent: 3953207 (1976-04-01), Horgan
patent: 4032338 (1977-06-01), Gange
patent: 4131462 (1978-12-01), Lee et al.

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