| 摘要 |
A stencil screen printing machine includes a screen retention frame horizontally reciprocable forwardly and rearwardly in one dimension for retaining and reciprocating a print stencil screen in a plane during a forward print stroke and a rearward return stroke. The stencil screen printing machine includes a rotational print cylinder beneath the frame that has a rotational axis transverse to the one dimension and that has a cylindrical peripheral surface for supporting print stock to be printed. Vertically movable lifting and lowering supports are operably associated with the print cylinder and are shiftable to place the cylinder peripheral surface and the print stock thereon upwardly at the stencil screen plane. A stencil squeegee is operably located above the plane and has a lower edge. Vertically movable lowering and lifting supports are operably associated with the squeegee and are shiftable downwardly to place the squeegee lower edge at the plane. The cylinder has a pair of ends with a plurality of circumferentially spaced chambers with respective flow orifices to the cylinder peripheral surface. A manifold control creates a negative retention pressure and also a positive discharge pressure on the print stock over portions of the peripheral surface. By this arrangement, the forwardly moving screen retention frame and the squeegee cause rotation of the cylinder and advancement of print stock on the cylinder, and the squeegee and cylinder enable stencil printing through a screen onto print stock at the plane.
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