Medium conveying apparatus, recording apparatus, and post-processing apparatus

Abstract

A medium conveying apparatus includes a housing in which a paper feeding port is provided, a paper feeding roller configured to convey paper through the paper feeding port, a drive shaft to which the paper feeding roller is attached, the drive shaft extending in a ±Y direction intersecting a conveying direction of the paper, and an elastic roller attached to the drive shaft and configured to prevent sound occurring on the inside of the housing from leaking to the outside of the housing through the paper feeding port. The elastic roller comes into contact with the paper conveyed by the paper feeding roller and removes electric charges of the paper.

What is claimed is: 
     
         1 . A medium conveying apparatus comprising:
 a housing in which an opening is provided;   a conveying roller configured to convey a medium through the opening;   a rotating shaft to which the conveying roller is attached, the rotating shaft extending in a medium width direction intersecting a conveying direction of the medium; and   a soundproof member attached to the rotating shaft and configured to prevent sound occurring on an inside of the housing from leaking to an outside of the housing through the opening, wherein   the soundproof member comes into contact with the medium conveyed by the conveying roller and removes electric charges of the medium.   
     
     
         2 . The medium conveying apparatus according to  claim 1 , wherein the soundproof member is an elastic roller having conductivity. 
     
     
         3 . The medium conveying apparatus according to  claim 2 , wherein a diameter of the elastic roller is larger than a diameter of the conveying roller. 
     
     
         4 . The medium conveying apparatus according to  claim 1 , wherein the soundproof member includes a sheet-shaped first member having conductivity. 
     
     
         5 . The medium conveying apparatus according to  claim 4 , wherein a sheet-shaped second member is stuck to the first member. 
     
     
         6 . The medium conveying apparatus according to  claim 1 , wherein
 the soundproof member includes a first soundproof member and a second soundproof member, and   the conveying roller is disposed between the first soundproof member and the second soundproof member in the medium width direction.   
     
     
         7 . The medium conveying apparatus according to  claim 1 , wherein
 the conveying roller includes a first conveying roller and a second conveying roller, and   the soundproof member is disposed between the first conveying roller and the second conveying roller in the medium width direction.   
     
     
         8 . The medium conveying apparatus according to  claim 1 , wherein the soundproof member is attached to the rotating shaft to be configured to idle. 
     
     
         9 . The medium conveying apparatus according to  claim 1 , further comprising a pair of conveyance guide plates disposed downstream of the opening in the conveying direction and configured to guide the medium on both upper and lower sides of the medium, wherein
 the soundproof member is formed long to cover a space between the pair of conveyance guide plates.   
     
     
         10 . The medium conveying apparatus according to  claim 1 , wherein the opening is a paper feeding port to which the medium is supplied. 
     
     
         11 . The medium conveying apparatus according to  claim 1 , wherein the opening is a paper discharge port from which the medium is ejected. 
     
     
         12 . A recording apparatus comprising:
 a housing in which an opening is provided;   a conveying roller configured to convey a medium through the opening;   a rotating shaft to which the conveying roller is attached, the rotating shaft extending in a medium width direction intersecting a conveying direction of the medium; and   a soundproof member attached to the rotating shaft and configured to prevent sound occurring on an inside of the housing from leaking to an outside of the housing through the opening; and   a recording unit configured to perform recording on the medium, wherein   the soundproof member comes into contact with the medium conveyed by the conveying roller and removes electric charges of the medium.   
     
     
         13 . A post-processing apparatus comprising:
 a housing in which an opening is provided;   a conveying roller configured to convey a medium through the opening;   a rotating shaft to which the conveying roller is attached, the rotating shaft extending in a medium width direction intersecting a conveying direction of the medium; and   a soundproof member attached to the rotating shaft and configured to prevent sound occurring on an inside of the housing from leaking to an outside of the housing through the opening; and   a post-processing unit configured to perform post-processing on the medium, wherein   the soundproof member comes into contact with the medium conveyed by the conveying roller and removes electric charges of the medium.