Patent ID: 8096547
Filing Date: 2012-01-17
Classification: B65H

Abstract:
1. A sheet stopping structure for use in an automatic document feeder, said sheet stopping structure comprising: a sheet pick-up arm selectively rotated to a standby position or a sheet pick-up position, wherein said sheet pick-up arm has a protruding block on a lateral surface thereof, wherein when said sheet pick-up arm is located at said sheet pick-up position, said sheet pick-up arm is permitted to perform a sheet pick-up operation; a sheet guide casing comprising a receiving recess, wherein said receiving recess is disposed under said sheet pick-up arm and comprises a first sidewall, a second sidewall and two sliding slots, wherein said two sliding slots are formed in said first sidewall and said second sidewall, respectively; and a sheet stopper disposed under said protruding block of said sheet pick-up arm and comprising two protrusion shafts, wherein said two protrusion shafts are arranged at bilateral sides of said sheet stopper and penetrated through said two sliding slots, respectively, so that said sheet stopper is movable upwardly and downwardly along said sliding slots.