Transporting device, image reading apparatus, and image forming apparatus

Abstract

Provided is a transporting device including a first contact member having a first contact portion that contacts a medium transported, a second contact member having a second contact portion that contacts the medium transported, on the downstream side of the first contact portion in a transporting direction, the first contact portion and the second contact portion each having a tangential plane, and the tangential planes coinciding with each other, a transporting unit that transports the medium so that a first surface of the medium coincides with the tangential plane in a section of the first contact portion to the second contact portion, and a processing unit that is arranged between the first contact portion and the second contact portion, and performs processing on the first surface of the medium that is passing through a processing region.

What is claimed is: 
     
         1 . A transporting device comprising:
 a first contact member having a first contact portion that contacts a medium transported;   a second contact member having a second contact portion that contacts the medium transported, on the downstream side of the first contact portion in a transporting direction, the first contact portion and the second contact portion each having a tangential plane, and the tangential planes coinciding with each other;   a transporting unit that transports the medium so that a first surface of the medium coincides with the tangential plane in a section of the first contact portion to the second contact portion; and   a processing unit that is arranged between the first contact portion and second contact portion, and performs processing on the first surface of the medium that is passing through a processing region.   
     
     
         2 . The transporting device according to  claim 1 ,
 wherein the transporting device has a contacting unit that contacts a second surface of the medium opposite to the first surface, and the contacting unit contacts the second surface at a first position and a second position.   
     
     
         3 . The transporting device according to  claim 2 ,
 wherein the contacting unit includes a third contact member having a third contact portion that contacts the medium transported, at the first position, and a fourth contact member having a fourth contact portion that contacts the medium at the second position.   
     
     
         4 . The transporting device according to  claim 1 ,
 wherein the transporting unit includes:   a first transporting member which has a first rotating member that is provided on the upstream side of the first contact member in the transporting direction and the first contact member rotates to transport the medium contacting a surface of the first rotating member; and   a second transporting member which has a second rotating member that is provided on the downstream side of the second contact member in the transporting direction and the second contact member rotates to transport the medium contacting a surface of the second rotating member, and   wherein a speed at which the surface of the second rotating member moves is faster than a speed at which the surface of the first rotating member moves.   
     
     
         5 . The transporting device according to  claim 2 ,
 wherein the transporting unit includes:   a first transporting member which has a first rotating member that is provided on the upstream side of the first contact member in the transporting direction and the first contact member rotates to transport the medium contacting a surface of the first rotating member; and   a second transporting member which has a second rotating member that is provided on the downstream side of the second contact member in the transporting direction and the second contact member rotates to transport the medium contacting a surface of the second rotating member, and   wherein a speed at which the surface of the second rotating member moves is faster than a speed at which the surface of the first rotating member moves.   
     
     
         6 . The transporting device according to  claim 3 ,
 wherein the transporting unit includes:   a first transporting member which has a first rotating member that is provided on the upstream side of the first contact member in the transporting direction and the first contact member rotates to transport the medium contacting a surface of the first rotating member; and   a second transporting member which has a second rotating member that is provided on the downstream side of the second contact member in the transporting direction and the second contact member rotates to transport the medium contacting a surface of the second rotating member, and   wherein a speed at which the surface of the second rotating member moves is faster than a speed at which the surface of the first rotating member moves.   
     
     
         7 . The transporting device according to  claim 2 ,
 wherein the contacting unit includes:   a first transporting member which has a first rotating member that is provided on the upstream side of the first contact member in the transporting direction and the first contact member rotates to transport the medium contacting a surface of the first rotating member; and   a second transporting member which has a second rotating member that is provided on the downstream side of the second contact member in the transporting direction and the second contact member rotates to transport the medium contacting a surface of the second rotating member, and   wherein the first transporting member contacts the second surface at the first position, and the second transporting member contacts the second surface at the second position.   
     
     
         8 . The transporting device according to  claim 7 ,
 wherein a speed at which the surface of the second rotating member moves is faster than a speed at which the surface of the first rotating member moves.   
     
     
         9 . The transporting device according to  claim 2 , further comprising:
 a changing unit that changes the distances between the first positions and the tangential plane and changes the distances between the second positions and the tangential plane.   
     
     
         10 . The transporting device according to  claim 3 , further comprising:
 a changing unit that changes the distances between the first positions and the tangential plane and changes the distances between the second positions and the tangential plane.   
     
     
         11 . The transporting device according to  claim 4 , further comprising:
 a changing unit that changes the distances between the first positions and the tangential plane and changes the distances between the second positions and the tangential plane.   
     
     
         12 . The transporting device according to  claim 7 , further comprising:
 a changing unit that changes the distances between the first positions and the tangential plane and changes the distances between the second positions and the tangential plane.   
     
     
         13 . The transporting device according to  claim 9 ,
 a changing unit that changes the distances between the first positions and the tangential plane and changes the distances between the second positions and the tangential plane.   
     
     
         14 . The transporting device according to  claim 10 ,
 a changing unit that changes the distances between the first positions and the tangential plane and changes the distances between the second positions and the tangential plane.   
     
     
         15 . The transporting device according to  claim 11 ,
 a changing unit that changes the distances between the first positions and the tangential plane and changes the distances between the second positions and the tangential plane.   
     
     
         16 . An image reading apparatus comprising:
 the transporting device according to  claim 1 ,   wherein the processing unit is a reading unit.   
     
     
         17 . An image forming apparatus comprising:
 the transporting device according to  claim 1 ,   wherein the processing unit is an ink jet recording unit.