Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Structures of a drum and a stencil for a stencil printer
 In a stencil printer, a drum has the outer periphery thereof formed by a porous sheet having passages for ink therein. The passages are each configured such that the ink entered an inlet pore is diverted from a single perpendicular to the drum at least once, and then flows out via at least one of outlet pores. The pores of the sheet are sized smaller than perforations to be formed in a stencil. 
Tohoku Ricoh Co., Ltd.
B B
B41C B41M
inventional inventional
Tomiya Kazuyoshi
Mori Kobayashi