Patent ID: 6843761
Filing Date: 2005-01-18
Classification: B28B,B65H,C04B,Y10T

Abstract:
1. A paper feed roller for use in printing machines, comprising: a rotary shaft, and a cylindrical roller portion integrated with an outer periphery of the rotary shaft; wherein the cylindrical roller portion comprises a hydraulic composition comprising a hydraulic powder and non-hydraulic powder and a workability improver, and said non-hydraulic powder is at least one selected from the group consisting of calcium carbonate powder, slug powder, fly ash powder, silica powder and silica fume powder, and said workability improver is one of a powder and an emulsion of at least one resin selected from the group consisting of: vinyl acetate resin, a copolymer resin with vinyl acetate, acrylic resin, a copolymer resin with acryl, styrene resin, a copolymer resin with styrene, and an epoxy resin.