Automatic paper feeding mechanism and automatic paper feeding device

Abstract

An automatic paper feeding mechanism and an automatic paper feeding device incorporating the mechanism are provided that enable a stack of document sheets to be automatically fed into a shredder by at least one disk-shaped claw member in lots of a specified maximum number of sheets for shredding by the shredder, simply by setting the stack in the paper feeder. The automatic paper feeding mechanism is adapted to be supplied with rotational power by a shredder nit having intermeshed cutting blades for supplying paper sheets to the shredder unit in lots of two or more. It is equipped on at least one side face of a paper feed roller of a paper feeding section with a disk-shaped claw member formed with sharp portions for automatically supplying paper sheets to the shredder unit under piercing.

1 . All automatic paper feeding mechanism for use with a shredder having intermeshed cutting blades and adapted to be supplied with rotational power by the shredder so as to supply paper sheets to the shredder, which paper feeding mechanism is equipped on at least one side face of a paper feed roller of a paper feeding section with a disk-shaped claw member formed with sharp portions for automatically supplying paper sheets to the shredder under piercing. 
   
   
       2 . The paper feeding mechanism according to  claim 1 , wherein the disk-shaped claw member has the sharp portions formed along its outer peripheral edge. 
   
   
       3 . The automatic paper feeding mechanism according to  claim 1 , wherein the disk-shaped claw member has the sharp portions formed thereon to lie substantially perpendicular to the peripheral edge thereof 
   
   
       4 . An automatic paper feeding device including a body, a paper feeding mechanism and a paper delivery outlet, wherein the automatic paper feeding mechanism comprises:
 a paper feeding tray on which paper sheets to be shredded are set and held;   a first unit axially mounted on a shaft extending between opposite inner faces of the device and including a roller mounted substantially at the middle of the paper feeding tray that rotates to push paper from above to ensure reliable feeding, at least one disk-shaped claw member fitted on the roller, a first gear fitted on the roller, and a second gear engaged with the first gear; and   a second unit (gear unit) equipped with a third gear engaged with the second gear and a second roller.   
   
   
       5 . The automatic paper feeding device according to  claim 4 , further comprising a power source for transmitting power to the second gear to enable of the paper feeding device to operate under its own power.