Abstract: A stencil printing machine 1 is provided as including a downstream rotary printing drum 50 with an outer circumferential periphery 50a mounted with a stencil sheet 20, and a rotary press roller 56 which is moveable between a pressurized position to press an outer circumferential periphery 50a of the printing drum 50 and a separated position displaced from the outer circumferential periphery 50a of the printing drum 50, wherein a print sheet 45, which is fed, is pressed and transferred between the printing drum 50 and the press roller 56 which rotate together, and, during such a pressurized transfer stage, ink is transferred to the print sheet 45 to perform printing operation. The outer circumferential periphery of the press roller 56 is formed with micro-convexities and concavities.

Abstract: According to the collating apparatus of the present invention, if the collation error is detected, the erroneously collated matter selection and discharge unit discharges the erroneously collated matter so as to be distinguishable from the correctly collated matters. Besides, the collation error can be recognized and the erroneously collated matter can be removed after the collation operation is completed for all collated matters. Therefore, it is possible to continue the collation operation without stopping the collation operation when the collation error occurs.

Abstract: A stencil printing machine 1 is provided as including a downstream rotary printing drum 50 with an outer circumferential periphery 50a mounted with a stencil sheet 20, and a rotary press roller 56 which is moveable between a pressurized position to press an outer circumferential periphery 50a of the printing drum 50 and a separated position displaced from the outer circumferential periphery 50a of the printing drum 50, wherein a print sheet 45, which is fed, is pressed and transferred between the printing drum 50 and the press roller 56 which rotate together, and, during such a pressurized transfer stage, ink is transferred to the print sheet 45 to perform printing operation. The outer circumferential periphery of the press roller 56 is formed with micro-convexities and concavities.

Abstract: In the multi-drum type rotary stencil printer adapted to drive a plurality of printing drums altogether in synchronization with one another by a common drive mechanism, when one of the printing drums is placed out of engagement with a printing, a degradation of ink is anticipated in the temporarily rested printing drum due to its excessive stirring during an idling rotation. In order to avoid such an ink degradation, a clutch is incorporated in a route of transmitting a driving force from the common drive mechanism to each of the printing drums, so that the transmission of the driving force through each of the route can be selectively interrupted.

Abstract: A collating apparatus according to the present invention comprises a plurality of paper feed trays; a paper feed section for conveying a plurality of sheets stacked on the plurality of paper feed trays one by one at predetermined timing; a collating and conveying section for collating the plurality of sheets conveyed from the respective paper feed trays of the paper feed section to provide collated matters and for conveying the collated matters to a discharge section; the discharge section for discharging the collated matters conveyed from the collating and conveying section to a stacker section; and the stacker section provided with a paper discharge tray for stacking the collated matters conveyed from the discharge section, provided with a pair of side fences positioned at both outer sides of the collated matters discharged onto the paper discharge tray and restricting an orthogonal direction to a discharge direction of the collated matters, and having a sorting unit for alternately offsetting the collated

Abstract: In a stencil sheet clamping construction for clamping a leading end portion of a stencil sheet to a stencil printing drum, a press plate is set at a half open position making an acute angle against an upper surface of a base portion when the leading end portion of the stencil sheet is mounted. This allows the leading end portion of the stencil sheet to be lifted above the upper surface of the base portion by floating up of an elastic film belt when the stencil sheet is discharged. This also prevents obstruction of the smooth advance of the leading end portion of the stencil when it is mounted due to the floating up of the elastic film belt.