Heat-sensitive stencil sheet
AssigneeRiso Kagaku Corporation
InventorMasahiro Matsuura
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Abstract
The present invention provides a heat-sensitive stencil sheet providing excellent printing images by preventing deterioration of susceptibility to perforation by a thermal head even when the sheet is wound up into a roll or is stacked with another sheet for a long period of time, and comprising a thermoplastic resin film of constant smoothness laminated onto a porous support, the surface of the porous support having a PPS surface smoothness of 1.2 μm or less, at the side opposite to that facing the thermoplastic resin film, as measured while a separate film having a PPS surface smoothness of 0.0 μm and a thickness of 0.1-10 μm is pressed against the surface of the porous support.
Claims4
A heat-sensitive stencil sheet roll, formed by winding up a heat-sensitive stencil sheet to form a roll, the roll comprising a thermoplastic resin film laminated onto a porous support, the surface of the porous support having a PPS surface smoothness of 1.2 μm or less at the side opposite to that facing the thermoplastic resin film, as measured while a separate film having a PPS surface smoothness of 0.0 μm and a thickness of 0.1-10 μm is pressed against the surface of the porous support at the side opposite to that facing the thermoplastic resin film.
Dependencies are inferred from the claim text.