Recording apparatus having skew removal

Abstract

A recording apparatus has a paper feeder wherein single sheets of paper can be set, a paper delivery device for transporting paper fed from the paper feeder to a recorder, and a control unit for controlling operation of the paper feeder and the paper delivery device. The control unit has a skew removal execution mode of only the first sheet of paper where the paper tip is bitten into a paper delivery roller forming a part of the paper delivery device and then the paper delivery roller is reversely rotated for ejecting the paper tip for the first sheet of paper at the start of recording and then forward rotating the paper delivery roller for delivering the sheet of paper whose skew is removed to the recorder and delivering the second and later sheets of paper to a record area without executing the skew removal.

1 . A recording apparatus comprising: 
 a paper feeder configured to set a stack, comprising a plurality of single sheets of paper having the same thickness, therein;    a paper delivery device having a paper delivery roller for transporting a sheet of paper fed from said paper feeder to a recorder; and    a control unit for controlling operation of said paper feeder and said paper delivery device;    wherein said paper feeder and paper delivery device are configured to conduct a skew removal such that a paper tip of a sheet of paper fed from said paper feeder is once bitten into the paper delivery roller and then ejected therefrom by reversely rotating said paper delivery roller before delivering the sheet of paper to the recorder by forwardly rotating the paper delivery roller; and    wherein said control unit controls feeding of the stack according to a skew removal execution mode, wherein the skew removal execution mode controls feeding of the stack so that the skew removal is executed on only a first sheet of paper to a paper tip of the first sheet of paper which is firstly fed by the paper feeder at a start of a recording operation of the apparatus and later sheets of paper are delivered to the recorder without executing the skew removal.    
   
   
       2 . The recording apparatus according to  claim 1 , where said paper feeder includes a paper feed roller for feeding one of the sheets of paper by rotating and a hopper for pushing up and pressing the sheets of paper against the paper feed roller, and the hopper is configured to push up the first sheet of paper at the start of recording operation at a first stroke and to push up the later sheets of paper at a second stroke which is smaller than the first stroke.  
   
   
       3 . The recording apparatus according to  claim 2 , wherein said second stroke is variable in accordance with an amount of the plurality of single sheets of paper in the paper feeder.