Method of impressing and reading out a surface charge on a multi

Details Method of impressing and reading out a surface charge on a multi Method of impressing and reading out a surface charge on a multi

1979-05-14

1985-09-03

Cardillo, Jr., Raymond F.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358209, 358294, 358296, 250213R, H04N 530, H04N 576, H01J 3150

Patent

active

045395918

ABSTRACT:
A method of recording and reading out a latent image which comprises placing a uniform surface charge on the photoconductive layer of a multilayered detector apparatus, biasing said photoconductive layer with an electric field whose polarity opposes said surface charge, discharging some portion of said surface charge of said photoconductive layer by exposing said detector to a modulated radiation flux capable of generating electron hole pairs in the photoconductor; scanning the surface of said partially discharged photoconductive layer with a small diameter photon beam whereby said surface charge is sequentially further discharged, and measuring the changing electric current of said sequential further discharge as a function of time.

REFERENCES:
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patent: 3412242 (1968-11-01), Giaimo, Jr.
patent: 3609031 (1971-09-01), Kinoshita
patent: 4176275 (1979-11-01), Korn et al.
DePalma et al., Photosensitive Facsimile Device, IBM Tech. Disc. Bulletin, vol. 19, No. 10, 3/77, pp. 3667-3668.
Schaffert, Photostorage System, IBM Tech. Disc. Bulletin, vol. 5, No. 3, 8/62, pp. 54-55.

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