Patent ID: 6077207
Filing Date: 2000-06-20
Classification: B41F,B41N,B65H,C23C

Abstract:
A printing web transporting roller incorporated in a printing web impressing and transporting system for impressing against a printing element one of a printing sheet and web and then transporting it in a printing device comprising:a roller basis;an undercoating layer overlaid on said roller basis;a composite coating film superposed on said undercoating layer;said roller basis having formed on a peripheral surface thereof a plurality of portions of a surface of large curvature and a plurality of portions of a surface of small curvature alternately arranged in a mutually adjoining state, wherein said plurality of portions of the surface of large curvature are present throughout the entire periphery of said roller basis and the width thereof is in the range of 30-80 mm;said roller basis being formed of fiber-reinforced plastics;said undercoating layer being composed of a substrate film and a surface-coarsened film formed onto the substrate film, wherein said substrate film is formed of an organic macromolecular material and has a thickness of 30-300 .mu.m and said surface-coarsened film is formed of an organic macromolecular material and has a thickness of 5-300 .mu.m and has a surface roughness (Rz) in the range of 40-130 .mu.m; and said composite coating film comprising a porous ceramic layer formed by thermal spraying and a resin layer formed on a surface of said ceramic layer and inside pores in said ceramic layer, wherein said resin layer is formed of a resin for forming a solid of low energy surface.