Printer having paper guide structure to unjam paper in a printer

Abstract

A printer having a paper guide structure, including a first feed roller to allow a paper supplied from a paper feeding portion to move along a transfer path. A second feed roller receives the paper transferred by the first feed roller and transfers the paper. A guide member is arranged between the first and second feed rollers along the transfer path and guides the paper. A door is installed at a main body of the printer to be opened and closed. An empty space is formed toward the door at the rear of the second feed roller so that, when the door is open and a leading end of the paper passing the second feed roller is pulled up, the paper is discharged along an outer circumferential surface of the second feed roller.

What is claimed is:  
     
         1 . A printer having a paper guide structure comprising: 
 a paper feeding portion to feed a paper;    a transfer path;    a first feed roller to move the fed paper along the transfer path;    a second feed roller to receive the paper moved by the first feed roller and to transfer the paper along the transfer path;    a guide member between the first and second feed rollers to guide the paper along the transfer path;    a main body; and    a door installed at the main body to be opened and closed,    wherein an empty space is formed toward the door at a side of the second feed roller away from the first feed roller so that, when the door is opened and a leading end of the paper passing the second feed roller is pulled, the paper is discharged along an outer circumferential surface of the second feed roller.    
     
     
         2 . The printer as claimed in  claim 1 , further comprising first and second backup rollers rotating in contact with the first and second feed rollers, respectively, to transfer the paper by catching the paper between the first and second feed rollers and the first and second backup rollers.  
     
     
         3 . The printer as claimed in  claim 1 , wherein the second feed roller comprises a rotating shaft and the printer further comprises: 
 a frame; and    a bracket fixed to the frame on the transfer path and to support the rotating shaft of the second feed roller, wherein the bracket is coupled to the frame.    
     
     
         4 . The printer as claimed in  claim 1 , further comprising an auxiliary guide portion disposed at the empty space when the door is closed and to guide the transfer of the paper.  
     
     
         5 . The printer as claimed in  claim 3 , wherein the bracket has a V-shape.  
     
     
         6 . An apparatus, comprising: 
 a first roller to transfer a paper;    a first guide to guide the paper on a first side of the first roller;    a second guide to selectively guide the paper on a second side of the first roller; and    a door to support the second guide and selectively open and close,    wherein the second guide moves away from the paper in an open state of the door.    
     
     
         7 . The apparatus as claimed in  claim 6 , further comprising: 
 a second roller on the first side of the first roller; and    a body to surround the first and second rollers and the first and second guides.    
     
     
         8 . The apparatus as claimed in  claim 7 , wherein the second guide does not guide the paper in an open state of the door.  
     
     
         9 . The apparatus as claimed in  claim 8 , further comprising third and fourth rollers, respectively rotating in contact with the first and second rollers, to transfer the paper therebetween.  
     
     
         10 . The apparatus as claimed in  claim 9 , wherein the paper may be removed without tearing when jammed between the first and second rollers.  
     
     
         11 . The apparatus as claimed in  claim 6 , wherein the second side is closer to the door than the first side.  
     
     
         12 . The apparatus of  claim 11 , wherein a portion of the second guide is on the first side of the first roller.  
     
     
         13 . An apparatus, comprising: 
 a bracket;    a first roller mounted on the bracket to transfer a paper;    a second roller mounted on the bracket to receive the paper from the first roller;    a first guide mounted on the bracket to guide first and second sides of the paper between the first and second rollers, and only the first side of the paper after the paper passes the second roller; and    a second guide to selectively guide the second side of the paper after the paper passes the second roller.    
     
     
         14 . The apparatus as claimed in  claim 13 , further comprising a door which opens and closes and on which the second guide is mounted.  
     
     
         15 . The apparatus as claimed in  claim 13 , wherein the second guide is not mounted on the bracket.  
     
     
         16 . The apparatus as claimed in  claim 14 , wherein the bracket has a V-shape and comprises: 
 a first portion extending substantially in a transfer direction of the paper before passing the second roller; and    a second portion extending substantially in a transfer direction of the paper after passing the second roller in an open state of the door.    
     
     
         17 . A printer having a paper guide structure comprising: 
 a paper feeding portion to feed a paper;    a transfer path;    a first feed roller to move the fed paper along the transfer path;    a second feed roller to receive the paper moved by the first feed roller and to transfer the paper along the transfer path;    a guide member between the first and second feed rollers to guide the paper along the transfer path;    a backup roller rotating in contact with the second feed roller with the paper passing therebetween;    a main body; and    a door installed at the main body to be opened and closed,    wherein a side of the paper contacts only an outer circumferential surface of the second feed roller after the paper passes the backup roller while the door is opened.    
     
     
         18 . A printer having a paper guide structure comprising: 
 a paper feeding portion to feed a paper;    a transfer path;    a first feed roller to move the fed paper along the transfer path;    a second feed roller to receive the paper moved by the first feed roller and to transfer the paper along the transfer path;    a guide member between the first and second feed rollers to guide the paper along the transfer path;    a backup roller rotating in contact with the second feed roller with the paper passing therebetween;    a main body; and    a door installed at the main body to be opened and closed,    wherein a side of the paper contacts an arc of the second feed roller after the paper passes the backup roller while the door is opened.