Patent ID: 7896333
Filing Date: 2011-03-01
Classification: B42C,B65H,Y10T

Abstract:
1. A sheet processing apparatus comprising: a processing tray on which plural sheets are stacked and subjected to finishing; a sheet waiting unit configured to be provided along a conveying path to convey the sheets to the processing tray; a sheet placing member that is provided in the sheet waiting unit and on which the sheets are placed; a rotor that is provided above in a conveying direction downstream side of the sheet waiting unit and supported to be capable of rising and falling and controlled to rotate in a sheet conveying direction during rotation in the lifted position, rotate to press the sheets in the lowered position, convey the sheets while keeping the positional shift, and press the sheets placed on the sheet waiting unit without rotating; a switching member that switches the rotor to a lifted position and a lowered position; and a driving source that pivots the rotor and conveys the sheets, wherein the sheet processing apparatus drives the switching member and the driving source and controls a sheet feeding operation by the rotor and places, in the plural sheets stacked on the sheet waiting unit, leading ends of second and subsequent sheets and aligns the leading ends with a position shifted a predetermined distance to a conveying direction upstream side from a leading end of a first sheet.