Image reading device and information processor having the image

Details Image reading device and information processor having the image Image reading device and information processor having the image

1994-10-25

1998-02-10

Frahm, Eric

Facsimile and static presentation processing

Facsimile

Picture signal generator

358482, H04N 1024, H04N 104

Patent

active

057175020

ABSTRACT:
An image reading device having a substrate, an array of a plurality of photoelectric conversion elements arranged on the substrate in a main scanning direction, and a plurality of light emission sources arranged in the main scanning direction to emit light for illumination of an original through light transmission windows formed at one side of the photoelectric conversion element array in a sub scanning direction. A shading portion is provided on the photoelectric conversion element side in each light transmission window corresponding to one of the plurality of photoelectric conversion elements to section the light transmission window into a plurality of light transmission regions at least on the photoelectric conversion element side. This image reading device is thus arranged to provide uniform output from the photoelectric conversion elements at the time of reading a black original.

REFERENCES:
patent: 3544713 (1970-12-01), Case et al.
patent: 4482804 (1984-11-01), Oritsuki et al.
patent: 4680644 (1987-07-01), Shirato et al.
patent: 4723129 (1988-02-01), Endo et al.
patent: 4740796 (1988-04-01), Endo et al.
patent: 5101285 (1992-03-01), Kawai et al.
patent: 5187595 (1993-02-01), Kitani et al.
patent: 5233442 (1993-08-01), Kawai et al.
patent: 5272548 (1993-12-01), Kawai et al.

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