Photocopying – Including fiber optics
Patent
1975-01-20
1976-03-30
Greiner, Robert P.
Photocopying
Including fiber optics
96 14, 198208, G03G 1516
Patent
active
039471136
ABSTRACT:
An improved apparatus is disclosed for transferring toner from the surface of a toner-bearing drum, such as a xerographic drum, to a support medium for the toner, such as plain paper. The improvement relates to apparatus of the type which employs a transfer web or belt to remove toner from the toner-bearing drum and to transfer it to a support medium. In such apparatus, it is typical for the transfer web to be at least partially driven by means of its contact with the toner-bearing drum and/or transfer rollers.
The improvement described herein comprises providing means for simultaneously disengaging the toner-bearing drum and at least one of the transfer rollers from the transfer web at least once per web cycle, and also providing means for mechanically correcting web alignment and registration while the toner-bearing drum and transfer roller are disengaged. Suitable means for disengaging the toner-bearing drum and transfer roller include the provision of indented surfaces on the drum and transfer roller. Suitable means for mechanically correcting web alignment and registration includes an independent driving means, such as a chain drive, for the transfer web. Thus, in this embodiment, the indented portions of the toner-bearing drum and transfer roller simultaneously disengage the web which is forced back into proper alignment and registration by the chain drive.
REFERENCES:
patent: 2990278 (1961-06-01), Carlson
patent: 3591276 (1971-07-01), Byrne
patent: 3792924 (1974-02-01), Matsuda et al.
patent: 3893761 (1975-07-01), Buchan et al.
"Improved Electro. Printing App. and Method 12933," Eastman Kodak Research Dis., Jan. 1975, pp. 21, 22.
Buchan William Raymond
Kulpan James A.
Mayer Edward Francis
Blair Homer O.
Brook David E.
Greiner Robert P.
Itek Corporation
Nathans Robert L.
LandOfFree
Electrophotographic toner transfer 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 Electrophotographic toner transfer apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrophotographic toner transfer apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-517960