Photocopying – Contact printing – Light boxes
Patent
1989-04-18
1990-05-08
Grimley, A. T.
Photocopying
Contact printing
Light boxes
271196, 271276, G03G 2100, G03G 1500, B65H 2954, B65H 512
Patent
active
049242733
ABSTRACT:
An improved transfer apparatus for use in an electrostatographic copier including a dielectric member adapted to carry electrostatically developed marking particle images. The transfer apparatus comprises a cylindrical roller mounted for rotation about its longitudinal axis and located such that its peripheral surface is in operative relation with the dielectric member of the copier. A receiver member is selectively tacked, at least at its lead marginal edge, on the peripheral surface of the roller by vacuum attraction, such vacuum being effective through ports in the roller. At least one trough is formed in the roller substantially aligned with the vacuum ports. Such trough minimizes contact of the tacked lead edge of the receiver sheet to the peripheral surface of the roller, thereby facilitating release of the sheet from the roller at a desired time.
REFERENCES:
patent: 4202542 (1980-05-01), Lammers et al.
patent: 4403847 (1983-09-01), Chrestensen
patent: 4550999 (1985-11-01), Anderson
patent: 4558944 (1985-12-01), Bothner
patent: 4740813 (1988-04-01), Roy
patent: 4786046 (1988-11-01), Freeman et al.
Eastman Kodak Company
Grimley A. T.
Kessler Lawrence P.
Royer William J.
LandOfFree
Roller 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 Roller transfer apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roller transfer apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2352645