Paper feeding apparatus of printer

Abstract

A paper feeding apparatus includes a bracket. A first feeding shaft is pivotably mounted on the bracket. A number of first feeding rollers is mounted on the first feeding shaft. The first feeding rollers rotate together with the first feeding shaft to contact a sheet of paper and move the paper forwards. A number of fans are mounted on the first feeding shaft. The fans rotate together with the first feeding shaft to drive air against the paper to prevent it becoming wrapped around one of the rollers.

1 . A paper feeding apparatus, comprising:
 a bracket with a first feeding shaft pivotally mounted thereon, the first feeding shaft configured to feed a paper, a plurality of first feeding rollers mounted on the first feeding shaft, the plurality of first feeding rollers is rotatable together with the first feeding shaft to contact the paper and move the paper forwards; and   a plurality of fans mounted on the first feeding shaft, and the plurality of fans is rotatable together with the first feeding shaft and the plurality of first feeding rollers to drive air flowing through a wrapped portion of the paper to smooth the wrapped portion.   
     
     
         2 . The paper feeding apparatus of  claim 1 , wherein the plurality of first feeding rollers and the plurality of fans are in a staggered arrangement on the first feeding shaft. 
     
     
         3 . The paper feeding apparatus of  claim 2 , wherein one of the plurality of fans is located between two of the plurality of first feeding rollers, and one of the plurality of first feeding rollers is located between two of the plurality of fans. 
     
     
         4 . The paper feeding apparatus of  claim 1 , wherein the first bracket comprises a supporting surface, a pair of supporting plates are located on the supporting surface, each of the pair of supporting plates defines a pivot hole, and opposites ends of the first feeding shaft are inserted in the pivot holes of the pair of supporting plates. 
     
     
         5 . The paper feeding apparatus of  claim 1 , further comprising a second feeding shaft pivotally mounted on the bracket, wherein the second feeding shaft is parallel to the first feeding shaft. 
     
     
         6 . The paper feeding apparatus of  claim 5 , wherein the bracket comprises a supporting surface, a row of blocking pins and a row of restricting pieces are located on the supporting surface, a receiving room is defined between the row of restricting pieces and the row of blocking pins, and the second feeding shaft is pivotally received in the receiving room. 
     
     
         7 . The paper feeding apparatus of  claim 6 , wherein the row of blocking pins is parallel to the row of restricting pieces. 
     
     
         8 . The paper feeding apparatus of  claim 6 , wherein each of the row of the blocking pins comprises a cambered surface which faces to the row of restricting pieces. 
     
     
         9 . The paper feeding apparatus of  claim 6 , wherein a plurality of second feeding rollers are mounted on the second feeding shaft and configured to rotate together with the second feeding shaft, and the plurality of first feeding rollers and the plurality of second feeding rollers are made of rubber, which applies friction force on the paper. 
     
     
         10 . A paper feeding apparatus, comprising:
 a bracket comprising a supporting surface; and   a first feeding shaft pivotally mounted on the supporting surface;   a plurality of first feeding rollers and a plurality of fans in a staggered arrangement on the first feeding shaft;   wherein the plurality of first feeding rollers is rotatable together with the first feeding shaft to contact a paper and move the paper forwards, and the plurality of fans is rotatable together with the first feeding shaft to drive air flowing through a wrapped portion of the paper to smooth the wrapped portion.   
     
     
         11 . The paper feeding apparatus of  claim 10 , wherein one of the plurality of fans is located between two of the plurality of first feeding rollers, and one of the plurality of first feeding rollers is located between two of the plurality of fans. 
     
     
         12 . The paper feeding apparatus of  claim 10 , wherein a pair of supporting plates are located on the supporting surface, each of the pair of supporting plates defines a pivot hole, and opposites ends of the first feeding shaft are inserted in the pivot holes of the pair of supporting plates. 
     
     
         13 . The paper feeding apparatus of  claim 10 , further comprising a second feeding shaft pivotally mounted on the bracket, wherein the second feeding shaft is parallel to the first feeding shaft. 
     
     
         14 . The paper feeding apparatus of  claim 13 , wherein a row of blocking pins and a row of restricting pieces are located on the supporting surface, a receiving room is defined between the row of restricting pieces and the row of blocking pins, and the second feeding shaft is pivotally received in the receiving room. 
     
     
         15 . The paper feeding apparatus of  claim 14 , wherein the row of blocking pins is parallel to the row of restricting pieces. 
     
     
         16 . The paper feeding apparatus of  claim 14 , wherein each of the row of the blocking pins comprises a cambered surface which faces to the row of restricting pieces. 
     
     
         17 . The paper feeding apparatus of  claim 14 , wherein a plurality of second feeding rollers are mounted on the second feeding shaft and configured to rotate together with the second feeding shaft, and the plurality of first feeding rollers and the plurality of second feeding rollers are made of rubber, which applies friction force on the paper. 
     
     
         18 - 19 . (canceled)