Patent ID: 6513426
Filing Date: 2003-02-04
Classification: B41L

Abstract:
A stencil printing machine, comprising:a rotary cylindrical drum rotatable about its own axis, the rotary cylindrical drum including an inner surface to which ink is supplied, and an outer peripheral surface around which a stencil sheet subjected to a stencil making process is wrapped; a press roller movable into contact with and away from the rotary cylindrical drum, wherein a printing sheet is transported in synchronism with a rotation of the rotary cylindrical drum, and is brought into pressure contact with an outer peripheral surface of the stencil sheet by the press roller so as to effect stencil printing with respect to the printing sheet; a plurality of tension springs capable of applying printing pressure for pressing the press roller against the outer peripheral surface of the rotary cylindrical drum; and a tensile-force varying mechanism capable of continuously extending or contracting one of the plurality of tension springs so as to render the printing pressure variable.