Abstract: In a sheet pay-out device for paying out a sheet from a sheet roll, the sheet roll is subjected to a rotational resistance which increases with the diminishing outer diameter of the sheet roll as the sheet is paid out therefrom so that the tension acting upon the sheet may be kept at a substantially constant level over the entire length of the sheet, and a favorable feeding action for the sheet is ensured. The information on the current outer diameter of the sheet roll is preferably printed on the sheet as an optical code. This device is suitable for use as a stencil master plate sheet feeding unit of a stencil printer equipped with the function of making stencil master plates, for feeding a stencil master plate sheet from a sheet roll.

Abstract: A sheet discharging apparatus includes a conveyor provided at one side of the body of the apparatus, and sorter trays and a large capacity tray provided on the opposing side. Wings are provided each rotatable about a rotation axis, on a discharging side of the conveyor, and a projection is formed in the front side in the sheet conveying direction of each wing. The projection is brought into contact with an urging member provided at a frame of the container which is movable in upward/downward directions. When sorter trays are used, the urging member is separate from the projection, so that upper surface of the wing is below a conveying surface. When the frame and urging member are elevated to use the large capacity tray, the urging member presses the projection upward, and hence wings are elevated to be positioned upper than the conveying surface.