| 摘要 |
A stencil printing machine incorporating squeegee roller in printing drum having peripheral wall having ink-nonpermeable nonperforated portion around ink-permeable perforated portion for winding a stencil sheet and printing the print sheet while transferring the print sheet by sandwiching the print sheet between the printing drum and the outer roller, wherein projected portion is provided on the nonperforated portion constituting side of inner peripheral face of the peripheral wall, thickness of the nonperforated portion is formed thicker than thickness of the perforated portion and accordingly, press force exerted to the peripheral wall and the stencil sheet by being sandwiched by the squeegee roller and the outer roller is enhanced on the side of the nonperforated portion and therefore, spread of ink is stopped within range of the perforated portion and ink is prevented from leaking from gap between outer peripheral face of the nonperforated portion of the peripheral wall and the stencil sheet.
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