Device and method to feed and align a web with increased web...

Details Device and method to feed and align a web with increased web... Device and method to feed and align a web with increased web...

2011-03-22

2011-03-22

Dondero, William E (Department: 3654)

Advancing material of indeterminate length

By orbitally traveling material-engaging surface

Including details of roll or mount

C226S196100, C226S015000

Reexamination Certificate

active

07909216

ABSTRACT:
A web alignment method and apparatus for a printing system that includes a friction drive, wherein the alignment device provides one or more of the following: a) a stable medium path with reduced web-walk, b) an alignment system that is not sensitive to the mechanical alignment of an upstream device such as a roll unwinder, c) an alignment system having a lower complexity and lower cost than active controlled systems, and d) an alignment system that is compatible with a wide range of media, ranging from lightweight papers (for example 60 gsm) to heavyweight stock (such as 300 gsm) including high weight high gloss coated grades. The alignment device includes an arrangement for supporting the web in an arcuate form between adjustable side guides.

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patent: 5455668 (1995-10-01), De Bock et al.
patent: 5685471 (1997-11-01), Taubenberger
patent: 6003988 (1999-12-01), McCann et al.
patent: 6634534 (2003-10-01), Frodl et al.
patent: 0 864 931 (1998-09-01), None

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