Optical reading document board and optical reader

Details Optical reading document board and optical reader Optical reading document board and optical reader

2007-10-23

2007-10-23

Moe, Aung S. (Department: 2625)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S487000, C358S509000, C358S001900, C358S475000, C358S461000, C348S207990, C348S569000, C359S211200

Reexamination Certificate

active

10313155

ABSTRACT:
In an optical-reading document board, an anti-reflection layer is formed by a transparent film and an anti-reflection film is bonded on a document-resting surface of a transparent glass plate. The anti-reflection layer is structured by a transparent film and an anti-reflection film bonded on one surface of the transparent film. The use of such an anti-reflection film greatly improves reflectivity to provide an averaged reflectivity of approximately 3% in the entirety. As a result, the transmissivity of light is 94% or greater. In connection with this, the conventional layer has a reflectivity of approximately 8%, and a transmissivity thereof is around 90%. This makes it possible to effectively utilize more of the light from the light source and thus greatly improve contrast.

REFERENCES:
patent: 3889272 (1975-06-01), Lou et al.
patent: 5430484 (1995-07-01), Nagane et al.
patent: 5459353 (1995-10-01), Kanazawa
patent: 5712194 (1998-01-01), Kanazawa
patent: 6284382 (2001-09-01), Ishikawa et al.
patent: 6383859 (2002-05-01), Watanabe

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