Paper transporting apparatus, paper feeding unit and image forming apparatus

Abstract

A paper transporting apparatus includes a pair of transport rollers including a first transport roller, a second transport roller, a first roller shaft inserted through the first transport roller, a second roller shaft inserted through the second roller, an urging member which urges the second roller shaft towards the first roller shaft, and a cover member arranged to be opened and closed. The urging member is attached to an inner surface of the cover member to support the second roller shaft, and urge the second roller shaft when the cover member is closed.

1 . A paper transporting apparatus comprising:
 a pair of transport rollers arranged to transport paper, including:   a first transport roller; and   a second transport roller opposite to the first transport roller;   a first roller shaft inserted through the first transport roller;   a second roller shaft inserted through the second transport roller;   a cover member arranged to be opened and closed; and   an urging member attached to an inner surface of the cover member and arranged to support the second roller shaft; wherein   the urging member is arranged to urge the second roller shaft towards the first roller shaft when the cover member is closed.   
     
     
         2 . The paper transporting apparatus according to  claim 1 , wherein:
 the cover member is substantially rectangular, and includes a base end section arranged to define an axis for opening and closing the cover member,   a base end section of the urging member is attached to a side of the base end section of the cover member, and   a head section of the urging member is located on a side of a head section of the cover member to support the second roller shaft and urge the second roller shaft towards the first roller shaft when the cover member is closed.   
     
     
         3 . The paper transporting apparatus according to  claim 1 , wherein the urging member is a leaf spring. 
     
     
         4 . The paper transporting apparatus according to  claim 1 , wherein the cover member is made of resin. 
     
     
         5 . The paper transporting apparatus according to  claim 4 , wherein the cover member is made of acrylonitrile butadiene styrene copolymer. 
     
     
         6 . A paper feeding unit comprising;
 a storage unit arranged to contain paper; and   a paper transporting apparatus configured to transport paper from the storage unit, including:   a pair of transporting rollers arranged to transport paper, including:
 a first transport roller; 
 a second transport roller opposite to the first transport roller; 
 a first roller shaft inserted through the first transport roller; 
 a second roller shaft inserted through the second transport roller; 
 a cover member arranged to be opened and closed; and 
 an urging member attached to an inner surface of the cover member and arranged to support the second roller shaft, the urging member is arranged to urge the second roller shaft towards the first roller shaft when the cover member is closed. 
   
     
     
         7 . The paper feeding unit according to  claim 6 , wherein:
 the cover member is substantially rectangular, and includes a base end section arranged to define an axis for opening and closing the cover member,   a base end section of the urging member is attached to a side of the base end section of the cover member, and   a head section of the urging member is located on a side of a head section of the cover member to support the second roller shaft and urge the second roller shaft towards the first roller shaft when the cover member is closed.   
     
     
         8 . The paper feeding unit according to  claim 6 , wherein the urging member is a leaf spring. 
     
     
         9 . The paper feeding unit according to  claim 6 , wherein the cover member is made of resin. 
     
     
         10 . The paper feeding unit according to  claim 9 , wherein the cover member is made of acrylonitrile butadiene styrene copolymer. 
     
     
         11 . An image forming apparatus comprising:
 an image forming unit configured to form an image on paper;   a storage unit arranged to contain paper; and   a paper transporting apparatus configured to transport paper from the storage unit to the image forming unit, including:
 a pair of transport rollers arranged to transport paper, including: 
 a first transport roller; and 
 a second transport roller arranged opposite to the first transport roller; 
 a first roller shaft inserted through the first transport roller; 
 a second roller shaft inserted through the second transport roller; 
 a cover member arranged to be opened and closed; and 
 an urging member attached to an inner surface of the cover member and arranged to support the second roller shaft, the urging member is arranged to urge the second roller shaft towards the first roller shaft when the cover member is closed. 
   
     
     
         12 . The image forming apparatus according to  claim 11 , wherein:
 the cover member is substantially rectangular, and includes a base end section arranged to define an axis for opening and closing the cover member,   a base end section of the urging member is attached to a side of the base end section of the cover member, and   a head section of the urging member is located on a side of a head section of the cover member to support the second roller shaft and urge the second roller shaft towards the first roller shaft when the cover member is closed.   
     
     
         13 . The image forming apparatus according to  claim 11 , wherein the urging member is a leaf spring. 
     
     
         14 . The image forming apparatus according to  claim 11 , wherein the cover member is made of resin. 
     
     
         15 . The image forming apparatus according to  claim 14 , wherein the cover member is made of acrylonitrile butadiene styrene copolymer.