Anti-marking coverings for printing presses
AssigneePrintGuard, Inc.
InventorsDaniel J. Rizika, Gary Litman, Joseph Llanes
Life of this patent
Estimating the term…
Abstract
In a printing press and attached onto the transfer cylinders, an anti-marking system that uniformly supports the transport and the release of the wet printed sheet from one station to the next. The anti-marking sheet consists of a two plus layer system, the outer layer being a textured surface and the inner layer being a microcellular material that is both compressible and resilient. The outer textured layer may be treated with either conductive/anti-static layers or an ink repellent layer or both. The two plus layer system is easily attached to both transfer cylinders and tracking/skeleton wheels using any combination of fixtures from Velcro™, magnetic, metallic, and pressure sensitive double sided tape to elastic loops.
Claims15
A method of transporting a freshly printed sheet in a printing press from a first printing station applying a first color to the sheet to a second printing station applying a second color to the sheet using one or more transfer cylinders for transporting the sheet between the printing stations, comprising:
- applying one or more transfer cylinders to receive the freshly printed sheet from the first printing station, at least one of the one or more transfer cylinders including a sheet supporting covering, the sheet supporting covering having:
- an inner layer having a flexible material that is resilient to compressive forces;
- and
- an outer layer having a flexible film substrate layer and a textured surface comprising elements partially embedded in a flexible adhesive supported by and protruding from a first side of the flexible film substrate layer;
- wherein the flexible film substrate layer is fixed, on a side opposite its first side, to the flexible material so that there is no relative movement between the inner and outer layers and the textured surface faces, in a direction away from the flexible material;
- wherein the sheet supporting covering is disposed on the transfer cylinder so that the flexible material faces in a direction towards the transfer cylinder and the textured surface faces away from the transfer cylinder so that the textured surface directly contacts the freshly printed sheet;
- further applying the one or more transfer cylinders to deliver the freshly printed sheet to the second printing station.
Dependencies are inferred from the claim text.