Method for hot-pressing photoconductors

Details Method for hot-pressing photoconductors Method for hot-pressing photoconductors

1974-02-04

1980-02-19

Parrish, John A.

Compositions

Electrically conductive or emissive compositions

Light sensitive

264332, 264345, G03G 504

Patent

active

041894065

ABSTRACT:
Highly densified, polycrystalline photoconductors can be produced by hot-pressing various materials, such as powdered lead monoxide. The powdered material is subjected to a temperature and pressure for a length of time sufficient to form a photoconductive element having a density of at least 85% and up to and including the theoretical density of the material. Such formed photoconductive element or material can be utilized in electro-photographic applications and, with the exception of such material in its single crystal form, will exhibit increased absorption of activating radiation, increased signal-to-noise ratios, and improved spatial frequency response in comparison with presently known photoconductive elements or materials.

REFERENCES:
patent: 2651700 (1953-09-01), Gans
patent: 3131238 (1964-04-01), Carnell
patent: 3307983 (1967-03-01), DeHaan et al.
patent: 3543025 (1970-11-01), Stanton
patent: 3577272 (1971-05-01), Reithel
patent: 3639132 (1972-02-01), Egerton et al.
patent: 3681071 (1972-08-01), Donald
Sittig, Photoconductive Materials, pp. 35-43, 188, 122 (1970).

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