Constant velocity transport for electronic document imaging

Details Constant velocity transport for electronic document imaging Constant velocity transport for electronic document imaging

1994-05-31

1996-01-30

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355 23, 355 50, 358496, G03B 2732, H04N 112, G03G 1500

Patent

active

054884640

ABSTRACT:
In a document handler for sequentially feeding document sheets over an imaging platen to be imaged with a constant velocity driven roller overlying the imaging platen, a document feeding control system which predicts when the constant velocity driven sheet feeding roller will be driven against the platen with no document sheet therebetween, an automatic lifting system which automatically lifts the feeding roller away from the platen in response to the document feeding control system predicting that no document sheet will be between the feeding roller and the platen and a forward roller driving signal being applied or when a reverse driving signal is being applied. The constant velocity feeding roller has at least four sections of two different diameters; an inner pair of common diameter feed roller surfaces and an outer pair of slightly smaller diameter surfaces on opposite sides providing document hold down and document edge detection image background. Additional constant velocity driven document sheet feeding nips are provided spaced upstream and downstream of the imaging platen and are commonly driven.

REFERENCES:
patent: 4536077 (1977-08-01), Stoffel
patent: 5101284 (1992-03-01), Tanabe
Xerox Disclosure Journal, vol. 8, No. 4 Jul./Aug. 1983 Author: Thomas Acquaviva.

Affiliated with

Also associated with

Rating

Constant velocity transport for electronic document imaging does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Constant velocity transport for electronic document imaging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constant velocity transport for electronic document imaging will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-159748