Patent ID: 6889605

Claim:
A method of preparing a heat-sensitive stencil comprising a porous resin layer, and a resin film laminated on said porous resin layer, and a thin resin layer interposed between said porous resin layer and said resin film, said method comprising the steps of: applying a wet coating composition to a surface of said resin film, said wet composition containing a resin, a first solvent capable of dissolving said resin, and a second solvent substantially incapable of dissolving said resin; applying heat to said composition at a temperature below a boiling point of said second solvent and sufficient to vaporize at least part of said first solvent; and drying said applied composition by applying heat to said composition at a temperature sufficient to completely vaporize said first solvent and said second solvent to form said thin resin layer and said porous layer simultaneously as a continuous unitary body on said surface of said film.