Photosensor having conductive shielding layer for electrostatic

Details Photosensor having conductive shielding layer for electrostatic Photosensor having conductive shielding layer for electrostatic

1991-11-07

1992-11-03

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

358483, 257 59, 257659, H01J 4014

Patent

active

051608359

ABSTRACT:
There is provided an image reading apparatus comprising: an opaque layer formed on a transparent insulative substrate; an insulative layer arranged on the opaque layer; photoelectric converting elements arranged on the insulative layer; and a transparent insulative protective layer formed on the photoelectric converting elements. The transparent insulative protective layer is formed as a multilayer structure and has a transparent conductive layer or an opaque conductive layer having a window which is sandwiched by the transparent insulative protective layer. With this apparatus, the transparent conductive layer does not directly come into contact with the surface of an original, so that the conductive layer is not abraded by the rubbing by the paper. An inconvenience due to the generation of the electrostatic charges is fairly eliminated. The reliability is increased.

REFERENCES:
patent: 3840391 (1974-10-01), Spitz et al.
patent: 4474457 (1984-10-01), Phelps
patent: 4691243 (1987-09-01), Cannella et al.
patent: 5060040 (1991-10-01), Saik et al.

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