Patent ID: 6526881
Filing Date: 2003-03-04
Classification: B41L

Abstract:
A printing machine comprising:a printing drum around which a perforated stencil sheet is wound, and which is provided rotatably about a first axis; a pressure drum having a sheet clamp section for clamping a tip end of a print sheet, and which is provided rotatably about a second axis, outer peripheral surfaces of the printing drum and the pressure drum provided to be freely pressed relatively to each other, the printing drum and the pressure drum opposite to each other on their respective outer peripheral surfaces; a pair of substantially planar guide members defining a sheet transfer path therebetween disposed on an upstream side of a rotation clamp position; and a sheet clamp guide member carried by a downstream end of one of said guide members for guiding a tip end of a print sheet which is transferred from a paper feed section to a clamp spot of a sheet clamp section located at the rotation clamp position; wherein the tip end of the print sheet, which is transferred from the paper feed section synchronously with rotation of both the printing drum and the pressure drum, is clamped by the sheet clamp section at the rotation clamp position upstream of a press position in a rotation direction, the printing drum and the pressure drum press each other on the press position, the print sheet thus clamped is transferred along the outer peripheral surface of the pressure drum and the print sheet is pressed against the perforated stencil sheet on the press position, whereby printing is conducted to the print sheet.