Photocopying – Contact printing – Light boxes
Patent
1993-04-19
1994-02-15
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355272, 355274, 355327, G03G 2100
Patent
active
052871444
ABSTRACT:
The resistivities of a transfer material or a transfer material carrying sheet change depending on the variation in the ambient conditions, the materials of the transfer material and the charge-up of the transfer material carrying sheet. Therefore, even if the charging by the transfer charger is maintained constant, the image transfer operation is not stable. An image transfer apparatus in which the charging amount by the transfer charger is controlled in accordance with the resistivities to stabilize the image transfer operation is disclosed The transfer charger will be controlled in accordance with an electric current flowing through a contact member when a transfer material passes between the contact member and a transfer material carrying sheet.
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Beatty Robert
Canon Kabushiki Kaisha
Grimley A. T.
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