Printing apparatus

Abstract

A printing apparatus includes a transporting roller formed of a metal plate bent into a cylindrical shape. The transporting roller has a first driving member that transmits a rotational driving force to the transporting roller, and a second driving member that transmits the rotational driving force transmitted thereto to a processing unit that performs printing-related processing. The first and second driving members are provided on one end side of a transporting area where recording media are transported.

1 . A printing apparatus comprising a transporting roller formed of a metal plate bent into a cylindrical shape, wherein the transporting roller has a first driving member that transmits a rotational driving force to the transporting roller, and a second driving member that transmits the rotational driving force transmitted thereto to a processing unit that performs printing-related processing, the first and second driving members being provided on one end side of a transporting area where recording media are transported. 
     
     
         2 . The printing apparatus according to  claim 1 , wherein the processing unit operates while the recording media are transported. 
     
     
         3 . The printing apparatus according to  claim 1 , wherein a seam of the metal plate constituting the transporting roller includes an intermediate straight portion that is located in the transporting area and is formed linearly in the axial direction, and a crossing portion that is located on one end side of the transporting area and is formed by fitting a recess and a projection provided at the end surfaces of the metal plate around the axis so as to extend in a direction intersecting the axial direction. 
     
     
         4 . The printing apparatus according to  claim 1 , wherein a third driving member is provided on the other end side of the transporting area of the transporting roller, the third driving member transmitting a rotational driving force transmitted thereto to a second processing unit for performing printing-related processing, which does not operate while the recording media are transported. 
     
     
         5 . The printing apparatus according to  claim 4 , wherein the seam of the metal plate constituting the transporting roller includes an intermediate straight portion that is located in the transporting area and is formed linearly in the axial direction, and a second crossing portion that is located on the other end side of the transporting area and is formed by fitting a recess and a projection provided at the end surfaces of the metal plate around the axis so as to extend in a direction intersecting the axial direction.