Jam Free Shingling Aperture
Original Publication Date: 1979-Feb-01
Included in the Prior Art Database: 2005-Feb-19
An automatic document feed (ADF) system which feeds sheets from the bottom of a stack requires a fixed gate to prevent the stack of sheets from being shingled all at once. Since the fixed gate and the sheet tray form an aperture, the top sheets of the stack are restrained while the bottom sheets are shingled through the aperture. More often than not, the foregoing system operates properly. However, when the stack is depleted such that its height approximates the aperture height, it is possible for sheets to wedge between the fixed gate and the sheet tray, thereby causing sheet jams.