Image reading device with black and white platen

Details Image reading device with black and white platen Image reading device with black and white platen

1995-03-20

1996-09-24

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Picture signal generator

358475, H04N 104

Patent

active

055596126

ABSTRACT:
The image reading device including a light source for irradiating an original, an image sensor for reading information on the original to produce an image, and a platen adapted to contact the original at the reading station. The platen includes a first, black portion located under the original and a second, white portion located outside the original. The widths of the first and second portions are automatically changed. The platen is formed by an endless belt having a triangular black region and a complementary white region. The endless belt is moved so that the width of the triangular black region at the reading position corresponds to the width of the original. The platen is alternatively formed as a box-shaped member or of liquid crystal panel.

REFERENCES:
patent: 4521099 (1985-06-01), Katayama et al.
patent: 4596456 (1986-06-01), Ide
patent: 4945384 (1990-07-01), Yamada et al.
patent: 4990956 (1991-02-01), Iwata
patent: 5068913 (1991-11-01), Sugiura
patent: 5384621 (1995-01-01), Hatch et al.
patent: 5483356 (1996-01-01), Chen et al.
patent: 5499112 (1996-03-01), Kawai et al.

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