Fay Sharpe Fagan Minnich & McKee, LLP
Heat-sensitive sheet for stencil printing
 Disclosed is a heat-sensitive sheet for stencil printing comprising a laminate of a thermoplastic resin film and a porous support mainly composed of synthetic fibers, the sheet having a wet tensile strength in the machine direction of 200 gf/cm or higher, a KES bending rigidity B value in the machine or cross direction of 0.02 g.multidot.cm.sup.2 /cm or higher, and a PPS smoothness determined when a film is pressed against the surface of the porous support of the sheet of 0.9 .mu.m or higher; the sheet has an excellent runnability, occurrence of wrinkles on the sheet when it is wound around a drum of a stencil printing machine is efficiently prevented, and elongation of the sheet is repressed and occurrence of wrinkles on the sheet can be prevented even when a large number of paper sheets are printed, and thus printed paper sheets having sharp images excellent in reproducibility of a manuscript can be provided. 
Riso Kagaku Corporation
Y Y B B B Y Y B Y B B
Y10T Y10T B32B B41N B32B Y10T Y10T B32B Y10S B32B B32B
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Kenji Hideyuki Hiroshi
Yoshida Kinoshita Watanabe