Feeding mechanism

Abstract

A feeding mechanism. The feeding mechanism comprises a roller and a blocking plate. The blocking plate rotates between a first position and a second position, abutting a sheet when in the first position, and the sheet sliding thereon by gravity when in the second position. Particularly, the blocking plate and the sheet form an included angle larger in the first position than in the second position.

1 . A feeding mechanism, comprising: 
 a roller; and    a blocking plate, rotating between a first position and a second position, abutting a media sheet in the first position, and the sheet sliding on the blocking plate by gravity in the second position, wherein the blocking plate and the sheet form an included angle larger in the first position than in the second position.    
   
   
       2 . The feeding mechanism as claimed in  claim 1  further comprising a torsion spring connected to the blocking plate, around which the blocking plate rotates.  
   
   
       3 . The feeding mechanism as claimed in  claim 1 , wherein the blocking plate is substantially perpendicular to the sheet in the first position.  
   
   
       4 . The feeding mechanism as claimed in  claim 1 , wherein the torsion spring provides a force driving the blocking plate to the first position.  
   
   
       5 . The feeding mechanism as claimed in  claim 1  further comprising a shaft and a cam, wherein the cam rotates around the shaft and rotates the blocking plate between the first and second position.  
   
   
       6 . The feeding mechanism as claimed in  claim 5 , wherein the cam comprises a depression with the blocking plate located therein when in the first position.  
   
   
       7 . The feeding mechanism as claimed in  claim 5  further comprising a driving assembly comprising a fixed portion and a frictional member, wherein the fixed portion connects to the shaft, and the frictional member contacts and rotates the cam.  
   
   
       8 . The feeding mechanism as claimed in  claim 7 , wherein the driving assembly further comprises a spring connecting the fixed portion and the frictional member.  
   
   
       9 . The feeding mechanism as claimed in  claim 5  further comprising a restraint fixed thereto, wherein the cam has a protrusion abutting the restraint when the cam rotates to a maximum position.  
   
   
       10 . The feeding mechanism as claimed in  claim 9  further comprising a driving assembly having a fixed portion and a frictional member, wherein the fixed portion connects to the shaft, and the frictional member slides on the cam when the cam rotates beyond the maximum position.