Paper fetching device using a suction disc for adhering to paper

Abstract

In an image system, a suction disc is used for adhering to paper to lift up the paper. A drawing device pulls a perimeter of a flexible and deformable suction disc to deform the suction disc, and the pulling force is released when the suction disc contacts the paper, resulting in the suction disc adhering to the paper. The drawing device pulls the perimeter of the suction disc again that the adhering force between the suction disc and the paper is lost in order to drop the paper.

1 . A paper fetching device using a suction disc for adhering to paper, comprising:
 a support rod;   a suction disc fixed at one end of the support rod for adhering to a side of a first medium; and   a drawing device having one end fixed at a perimeter of the suction disc for pulling the perimeter of the suction disc to deform the suction disc.   
   
   
       2 . The paper fetching device of  claim 1  further comprising a guiding element installed around the support rod, wherein the drawing device is inserted through the guiding element for pulling the perimeter of the suction disc toward the guiding element. 
   
   
       3 . The paper fetching device of  claim 2  wherein the guiding element is a retainer ring. 
   
   
       4 . The paper fetching device of  claim 1  wherein the drawing device is a wire. 
   
   
       5 . The paper fetching device of  claim 1  wherein the drawing device is a linkage device. 
   
   
       6 . An image system having a paper fetching device using a suction disc for adhering to paper, comprising:
 a housing;   a paper fetching device using a suction disc for adhering to paper, comprising:
 a support rod movably installed on the housing; 
 a suction disc fixed at one end of the support rod for adhering to a side of a first medium; and 
 a drawing device having one end fixed at a perimeter of the suction disc for pulling the perimeter of the suction disc to deform the suction disc; and 
   a fixer movably installed on the housing for pressing against a portion of the first medium when the paper fetching device is adhering to the side of the first medium.   
   
   
       7 . The image system of  claim 6  wherein the paper fetching device further comprising a guiding element installed around the support rod, where the drawing device is inserted through the guiding element for pulling the perimeter of the suction disc toward the guiding element. 
   
   
       8 . The image system of  claim 7  wherein the guiding element is a retainer ring. 
   
   
       9 . The image system of  claim 6  wherein the drawing device comprises a wire. 
   
   
       10 . The image system of  claim 6  wherein the drawing device comprises a linkage device. 
   
   
       11 . The image system of  claim 6  wherein a portion of the first medium pressed by the fixer is a region different from the side of the first medium.