Photocopying – Contact printing – Light boxes
Patent
1993-05-26
1995-10-03
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355208, 355273, 355311, G03G 1514, G03G 2100
Patent
active
054556643
ABSTRACT:
In an electrophotographic printer, a power supply is connected to a transfer roller to which a current is supplied at a time that a print paper is inserted between a photosensitive drum 10 and the transfer roller. Since respective print papers have different resistances from one another, a voltage according to the kind of the print paper is generated at the transfer roller at a time that a preset current is supplied to the transfer roller, and is held. A sensor is arranged for detecting the width of the print paper, and detects the width of the print paper inserted between the photosensitive drum and the transfer roller. The value of the preset current supplied to the transfer roller 14 is changed so as to adapt to the width of the print paper.
REFERENCES:
patent: 4382674 (1983-05-01), Miyoshi et al.
patent: 4733269 (1988-03-01), Kasahara et al.
patent: 5099287 (1992-03-01), Sato
patent: 5361088 (1994-11-01), Ito et al.
Ishihara Toru
Ito Katsuyuki
Katakura Shinichi
Matsuzaki Koichi
Grimley A. T.
Lee Shuk Y.
OKI Electric Industry Co., Ltd.
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