The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 1993
Filed:
Jun. 24, 1992
Lam F Wong, Fairport, NY (US);
George J Roller, Penfield, NY (US);
Venkatesh H Kamath, Fairport, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A high throughput, single pass direct transfer color printer utilizing a roll web based design which simplifies tandem engine architecture by eliminating a very difficult subsystem. Improved image registration is achieved simply by position/velocity synchronization of the paper web with respect to photoreceptors of the tandem print engines. Frictional slip between the web and an overrunning vacuum transport develops web tension which in turn provides a positive contact between the web and the photoreceptors needed for good image transfer. An arcuate convex paper path increases normal forces applied to the engines which increases contact pressure, as well as increasing contact surface area of the engines and the web. A web buckle between the vacuum transport and a fuser is provided to reduce vibrational disturbances and a cutter furnishes a printout in an appropriate size.