Single pass direct transfer color printer

Details Single pass direct transfer color printer Single pass direct transfer color printer

1992-06-24

1993-12-28

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

355327, 346157, 3461601, 430 42, G03G 1501

Patent

active

052744280

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.

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