Photocopying – Contact printing – Light boxes
Patent
1993-03-05
1995-04-25
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355274, 355327, G03G 1514
Patent
active
054103908
ABSTRACT:
An image forming apparatus includes image bearing member; a toner image forming device for forming a toner image on the image bearing member; a transfer material carrying member carrying a transfer material; a transfer charging member for transferring the toner image from the image bearing member onto a transfer material carried on the transfer material carrying member, the transfer charging member being contactable to a backside of the transfer material carrying member not contactable to the transfer material; wherein (.alpha..sub.B +.alpha..sub.C).alpha..sub.B .ltoreq.100 is satisfied where .alpha..sub.B is a resistance of the transfer charging member, and .alpha..sub.C is a constant resistance between the transfer charging member and the transfer material carrying member.
REFERENCES:
patent: 5172173 (1992-12-01), Goto et al.
patent: 5249022 (1993-09-01), Watanabe et al.
Fukushima Hisashi
Miura Yasushi
Canon Kabushiki Kaisha
Grimley A. T.
Lee Shuk Y.
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