Facsimile and static presentation processing – Facsimile – Picture signal generator
Patent
1995-06-07
1998-03-10
Vu, Kim
Facsimile and static presentation processing
Facsimile
Picture signal generator
358474, 358498, H04N 104
Patent
active
057267740
ABSTRACT:
A document reading device for applying light to a document placed on platen glass so as to read an image formed on the document. The device is provided with a light-screen. The width of the light-screen can be changed according to the document size in such a way that it is also possible to change the amount of light which can pass through the light-screen from a light source to be applied to the platen glass. With this arrangement, a local temperature increase in the platen glass can be inhibited during sequential document-reading.
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JP-A-56 076678 (Ricoh), 24 Jun. 1981, *abstract*.
Patent Abstracts of Japan, vol. 11, No. 399 (P-651), 26 Dec. 1987 & JP-A-62 162248 (Sharp Corp.), 18 Jul. 1987, *abstract*.
Maruyama Hiroyoshi
Shishido Kazuo
Canon Kabushiki Kaisha
Vu Kim
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