Stencil printing machine with a wrinkle preventing mechanism for a stencil sheet
AssigneeRiso Kagaku Corporation
InventorKinya Ono
Life of this patent
Estimating the term…
Abstract
When a stencil sheet (M) is wound around an outer peripheral surface of a rotary cylindrical drum (24) in accordance with a rotation thereof, a leading end of the stencil sheet (M) is retained by a clamp plate (51) provided on the rotary cylindrical drum (24), and the stencil sheet (M) is conveyed while being guided by upper and lower guide plates (45, 46) and nipped between the lower guide plate (46) and a supporting member (48) attached to an underside of a swinging member (47). At this stage, predetermined tension is applied to the stencil sheet (M) by an urging force of the swinging member (47) to thereby prevent occurrence of wrinkles on the stencil sheet (M).
Claims9
A stencil printing machine, comprising:
- a rotary cylindrical drum rotatable about its own axis, the rotary cylindrical drum having a retaining member which retains, at an outer peripheral surface of the rotary cylindrical drum, a leading end of a stencil sheet which has been subjected to a stencil making process, wherein the stencil sheet is wound around the outer peripheral surface of the rotary cylindrical drum in accordance with a rotation thereof;
- a pair of upper and lower guide plates which guide conveyance of the stencil sheet to the rotary cylindrical drum;
- a swinging member having a swinging end portion which is vertically swingable while the swinging member is downwardly urged so that the swinging end portion is oriented toward the rotary cylindrical drum and located adjacent to an end portion of the upper guide plate oriented toward the rotary cylindrical drum;
- and
- a supporting member attached to an underside of the swinging member, the supporting member supporting the stencil sheet being conveyed, while nipping the stencil sheet in cooperation with the lower guide plate.
Dependencies are inferred from the claim text.