Electrophotography – Image formation – Transfer
Patent
1997-05-22
1998-05-26
Brase, Sandra L.
Electrophotography
Image formation
Transfer
399297, 399314, G03G 1516
Patent
active
057582440
ABSTRACT:
An image forming apparatus includes a photoconductor drum on whose surface a toner image is formed, a transfer drum, including a dielectric layer, a pressure conductive layer whose volume resistivity falls by the application of pressure, and a conductive layer stacked in this order from a surface of the transfer drum, for transferring the toner image formed on the photoconductor drum onto a transfer sheet by electrically attracting and holding the transfer sheet onto a surface of the dielectric layer and by bringing the transfer sheet into contact with the photoconductor drum, power source section for applying a voltage to the conductive layer, and a grounded ground roller for coming into contact with the surface of the dielectric layer via the transfer sheet. This makes it possible to always maintain the amount of electric charge injected to the transfer material at an optimum value by adjusting a contact pressure between the transfer section and the contact and charge member. As a result, it is possible to electrostatically attract the transfer material onto the transfer section stably, regardless of a kind of the transfer material.
REFERENCES:
patent: 4407580 (1983-10-01), Hashimoto et al.
patent: 4739361 (1988-04-01), Roy et al.
patent: 5250994 (1993-10-01), Ito et al.
patent: 5390012 (1995-02-01), Miyashiro et al.
patent: 5517290 (1996-05-01), Marumoto et al.
patent: 5623329 (1997-04-01), Yamauchi et al.
patent: 5689758 (1997-11-01), Wataki et al.
patent: 5697034 (1997-12-01), Iwakura et al.
Brase Sandra L.
Sharp Kabushiki Kaisha
LandOfFree
Transfer device for an image forming apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transfer device for an image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transfer device for an image forming apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1977947