Patent ID: 6457409
Filing Date: 2002-10-01
Classification: B41F,B65H

Abstract:
A sheet guide unit provided for a sheet-fed press which has a first printing cylinder below which is fashioned a curved guide surface separated by a small sheet guide space from the surface of the first printing cylinder, and a second printing cylinder which is positioned close to the first printing cylinder so that a reception unit for the sheet is provided between the two cylinders, comprising:one or more air supply chambers, which are behind the curved sheet guide surface in an upstream portion of a sheet traveling path; an aspiration chamber behind the curved sheet guide surface adjacent to said air supply chamber in a downstream portion of the sheet traveling path; a first air control means to control the supply air, which is blown from the air supply chamber through air vents provided in the upstream portion of the path, and conveys the sheet through the sheet guide space suspending over the downstream portion of the path; and a second air control means to control the aspiration air, which is drawn into the aspiration chamber via a plurality of first aspiration vents in the downstream portion of the path, and exhausted from an aspiration port provided on a wall of the aspiration chamber which is not the sheet guide surface.