Electrophotography – Document handling – Original
Patent
1997-12-17
1999-08-31
Grimley, Arthur T.
Electrophotography
Document handling
Original
271 301, 399205, G03G 1500
Patent
active
059465395
ABSTRACT:
Lights passing in the range of an optical path L1 to an optical path L2 are blocked off by a lead register 201 and, therefore, the light from a light source is prevented from reaching the range of a position P1 to a position P2. Lights in the range of an optical path L2 to an optical path L3 are allowed to pass through the end portion 203a of a platen glass 203. As a result of this, when an edge erasing processing is not executed, if a manuscript A is present in the range of the position P1 to a position P3, then a shadow is recorded in a recording sheet. To avoid this, a reference position RP, which is used as a reference when reading the images of the manuscript A, is set at a position which is more distant from the end portion 203a than the position P3. This prevents the recorded images from being influenced by variations in the quantity of light caused by the lead register 201 and end portion 203a.
REFERENCES:
patent: 4422751 (1983-12-01), Komiya et al.
patent: 4579444 (1986-04-01), Pickney et al.
patent: 4610533 (1986-09-01), Takahata
patent: 4816867 (1989-03-01), Ito
patent: 5061962 (1991-10-01), Takahashi
patent: 5187530 (1993-02-01), Watanabe
Fuji 'Xerox Co., Ltd.
Grainger Quana
Grimley Arthur T.
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