Photocopying – Contact printing – Light boxes
Patent
1988-09-02
1989-11-28
Prescott, A. C.
Photocopying
Contact printing
Light boxes
355213, 355271, 355327, G03G 1500, G03G 1501
Patent
active
048841056
ABSTRACT:
A reproduction apparatus includes a mechanism for transporting a web carrying electrostatically held toner images through an endless path. The web includes a plurality of closely spaced perforations along an edge. A transfer device includes a drum for presenting a receiving surface to the web to receive a plurality of images in registery, for example, color separation images that will make up a multicolor image on the receiving surface. The transfer drum is driven through a gear train by a sprocket which engages the perforations. The sprocket may also drive the web. To assure the most accurate registry despite inaccuracies in the gear train or perforation location, the pitch of the images on the web divided by the circumference of the sprocket is an integer, preferably 1 and preferably, the circumference of the sprocket divided by the circumference of each of the gears in the gear train is an integer.
REFERENCES:
patent: 3914047 (1975-10-01), Hunt, Jr. et al.
patent: 4407580 (1983-10-01), Hashimoto et al.
patent: 4531828 (1985-07-01), Hoshino
patent: 4705386 (1987-11-01), Ogita et al.
patent: 4712906 (1987-12-01), Bothner et al.
patent: 4724458 (1988-02-01), Roy et al.
Joseph Brian J.
Procter Leo G.
Roy Carl W.
Eastman Kodak Co.
Prescott A. C.
Shapiro Barry J.
Treash Leonard W.
LandOfFree
Reproduction apparatus having a sprocket-driven transfer drum does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reproduction apparatus having a sprocket-driven transfer drum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reproduction apparatus having a sprocket-driven transfer drum will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-585198