JP2002160848A5 - - Google Patents

Claims (10)

In a paper processing apparatus that performs predetermined processing on paper that has been carried in from the paper output device side,
A first drive source for driving the sheet conveying means located on the uppermost stream;
A second drive source for driving a sheet conveying means other than the conveying means located at the uppermost stream;
Control means for controlling driving of the first and second drive sources;
The sheet processing apparatus is characterized in that the first drive source and the second drive source are independently driven and controlled by the control means.   The sheet conveyed by the sheet conveying unit is allowed to abut on the conveying path located upstream in the conveying direction of the conveying unit positioned at the uppermost stream and bends by contacting the conveying unit positioned at the uppermost stream in a driving stopped state. The sheet processing apparatus according to claim 1, wherein a gap is formed.   A sheet detecting means for detecting a sheet carried in from the sheet output device side located in a width direction orthogonal to the conveying direction at a position close to the upstream side of the conveying means located on the uppermost stream; 3. The sheet processing apparatus according to claim 1, wherein the control unit controls the operation of the conveying unit located at the uppermost stream by detecting the sheet by the detecting unit.   The amount of deflection of the paper is controlled based on information of a paper detection means that is disposed at a position close to the upstream side of the conveying means located at the most upstream side and detects the paper carried in from the paper output device side. The sheet post-processing apparatus according to claim 1, wherein   3. The conveying means positioned at the uppermost stream pushes down the leading end portion of the sheet that rotates in a direction opposite to the conveying direction and skews when the sheet detecting means detects the sheet. Or a sheet processing apparatus according to any one of 4 to 4 above.   The sheet processing apparatus according to claim 1, wherein the transport unit positioned at the uppermost stream includes a pair of transport rollers.   6. The sheet post-processing apparatus according to claim 5, wherein at least a contact portion of the conveying roller pair with the sheet is made of a silicon-based material.   The sheet processing apparatus according to claim 1, wherein a punching device for punching a sheet is provided immediately after the downstream side of the transporting unit located in the uppermost stream in the transport direction.   A relay guide plate that connects the paper output device and the paper processing device and conveys the paper from the former to the latter is provided, and at least one of the relay guide plates is installed so as to be swingable in the direction of bending of the paper. The sheet processing apparatus according to claim 3. In a paper processing apparatus for perforating paper conveyed and discharged by a paper discharge roller of the image forming apparatus main body,
  A perforation unit is disposed close to a receiving port of a sheet conveyed and discharged from the image forming apparatus main body, and a resist member is disposed close to the perforation unit, and the sheet conveying force of the paper discharge roller of the image forming apparatus main body A paper processing apparatus characterized in that a perforating process is performed by a perforating means after the front end of the paper is abutted against the resist member and the conveyance curve of the paper is corrected.