Image reading apparatus containing light receiving transistors and switching transistors
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United States of America Patent
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Nov 23, 1999
Grant Date -
N/A
app pub date -
Jul 10, 1997
filing date -
Jul 18, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An inexpensive, miniaturized and thin image reading apparatus reads various types of images, such as fingerprints. The apparatus includes a transparent substrate. A light-emitting unit emits light to pass through the transparent substrate and to be applied to a subject pressed against the substrate. A plurality of light-receiving units are disposed on the substrate in the vertical and horizontal directions with intervals therebetween and receive the light which is emitted from the light-emitting unit and is reflected from the subject. A reading device reads an image of the subject in accordance with the amount of light received by the light-receiving units.
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