Electrophotography – Control of electrophotography process – Control of transfer
Patent
1998-07-14
2000-02-15
Beatty, Robert
Electrophotography
Control of electrophotography process
Control of transfer
399303, G03G 1516
Patent
active
060262567
ABSTRACT:
An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer provided on an outer side of the transfer drum through the transfer paper. A toner image formed on a photosensitive drum is transferred onto the transfer paper when the transfer paper is wound around the transfer drum and brought into contact with the photosensitive drum. The image forming apparatus further includes a member which charges the transfer paper in a polarity reversed to a polarity of the transfer drum, so that the transfer drum can attract the transfer sheet electrostatically in a satisfactory manner. The image forming apparatus further includes a mechanism for removing the charges on the surface of the transfer drum and cleaning the surface of the transfer drum so as to eliminate defects in a transferred image, thereby upgrading the quality of a resulting image.
REFERENCES:
patent: 3837741 (1974-09-01), Spencer
patent: 5113226 (1992-05-01), Tadokoro et al.
patent: 5249023 (1993-09-01), Miyashiro et al.
patent: 5550620 (1996-08-01), Kimura et al.
patent: 5623329 (1997-04-01), Yamauchi et al.
patent: 5629760 (1997-05-01), Hayashi et al.
patent: 5697034 (1997-12-01), Iwakura et al.
patent: 5745820 (1998-04-01), Iwakura et al.
patent: 5771430 (1998-06-01), Iwakura
patent: 5799225 (1998-08-01), Abe et al.
Abe Takuya
Iwakura Yoshie
Katoh Atsuyuki
Oikawa Tomohiro
Shimazu Fumio
Beatty Robert
Sharp Kabushiki Kaisha
LandOfFree
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 Image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image forming apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1913077