Photocopying – Contact printing – Light boxes
Patent
1992-10-15
1994-03-22
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355203, 355208, 355274, G03G 1514
Patent
active
052969037
ABSTRACT:
An image forming apparatus has an image bearing member; a toner image forming device for forming a toner image on the image bearing member; a transfer charger for transferring the toner image from the image bearing member onto a transfer material; a first detector for detecting toner charge amount before image transfer onto the transfer material; a second detector for detecting the efficiency of the image transfer; and a controller for controlling a condition of image transfer operation in accordance with outputs of the first and second detector.
REFERENCES:
patent: 4772918 (1988-09-01), Karasawa et al.
Fukushima Hisashi
Miura Yasushi
Moriguchi Haruhiko
Sasanuma Nobuatsu
Suzuki Akio
Canon Kabushiki Kaisha
Grimley A. T.
Royer William J.
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