Patent ID: 6382100
Filing Date: 2002-05-07
Classification: B41F,B65H

Abstract:
A noncontact guide roller assembly suitable for use in web-fed rotary printing press for guiding a web of paper, the roller assembly comprising(a) a roller in the form of a hollow cylinder defining a plenum chamber therein, the roller having formed in its surface a multiplicity of air outlet openings in communication with the plenum chamber, so that air supposed under pressure to the plenum chamber is expelled from the air outlet openings in order to keep out of contact with the roller a web traveling over circumferential part of the surface roller; and (b) baffle means enclosing at least part of the other circumferential part of the roller surface for confining the air being expelled from the openings in said at least part of said other circumferential part of the roller surface and for redirecting the confined air into a pair of spaces, spaced circumferentially of the roller, between the web and the roller.