US 2012/0067239 A1Published application

Turning or shifting web in printer

OwnerEckhard Bauer, Domingo Rohde +6inventors

InventorsEckhard Bauer, Domingo Rohde, Thomas Koester, Randy Eugene Armbruster, Christopher M. Muir, Bradley Charles DeCook, Nathan J. Turner, William F. Dassero

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Abstract

A method for turning or laterally shifting a web in a printing machine includes guiding the web successively around four rollers. Roller 2 is rotated with respect to roller 1 by about 90°, so that a strand of the web extending between the first and second rollers performs a first twist by about 90°. Rollers 1 and 3 are substantially parallel so that the strand of the web extending between the second and third rollers is straight. Roller 4 is rotated with respect to roller 3 by about 90°, so that a strand of the web extending between rollers 3 and 4 performs a second twist by about 90°.

Claims4

Dependent claims

A method for turning or laterally shifting a web in a printing machine, the method comprising:

guiding the web around a first roller;
guiding the web around a second roller, the second roller being rotated with respect to the first roller by about 90°, such that a strand of the web extending between the first and second rollers performs a first twist by about 90′;
guiding the web around a third roller arranged about parallel to the first roller, such that the strand of the web extending between the second and third rollers is straight;
and
guiding the web around a fourth roller, the fourth roller being rotated with respect to the third roller by about 90°, such that a strand of the web extending between the third and fourth rollers performs a second twist by about 90°.

2 more elements

Dependencies are inferred from the claim text.