a process for producing a heat - sensitive stencil sheet is disclosed , which makes it possible to readily form a porous substrate layer having a uniform and dense fiber dispersion on a thermoplastic resin film . the process is characterized by electrostatically flocking staple fibers of 0 . 1 - 3 denier on a thermoplastic resin film coated with a binder and by thermally compressing them to form a porous substrate layer on the film . since the porous substrate layer , having a good fiber dispersion , can be formed directly on the film by the electrostatic flocking process , it is possible to make the production process shorter , reduce the production cost and to improve the visual quality of the printed matter .