Patent ID: 9061856
Filing Date: 2015-06-23
Classification: B23Q,B26D,B31D,B65H

Abstract:
1. A method for controlling a sheet processing apparatus including a cutting mechanism which cuts a sheet in a direction orthogonal to a sheet conveying direction by upper and lower cutting blades on the opposite sides of a sheet conveying surface, a pair of first conveying rollers which are arranged on the sheet conveying upstream side of the cutting mechanism and feed the sheet to the cutting mechanism, a pair of second conveying rollers which are arranged on the sheet conveying downstream side of the cutting mechanism, driving sources which independently drive the pair of first conveying rollers, the pair of second conveying rollers, and the cutting mechanism, and a control section which controls the operation of the driving sources, in which when sheet conveying direction length of rear end cut region of the sheet is equal to or more than predetermined value, rear end cut region is sequentially cut and divided into predetermined fine-cutting unit length from the sheet conveying downstream end thereof, wherein when sheet conveying direction length of rearmost end divided region in rear end cut region is equal to or more than minimum reference length corresponding to the distance between cutting position of the cutting mechanism and nipping position of the pair of first conveying rollers and is less than maximum reference length in which predetermined fine-cutting unit length is added to minimum reference length, the control section controls the driving source to hold the upper and lower blades of the cutting mechanism opened immediately after the downstream edge of rearmost end divided region is cut and to drive the pair of first conveying rollers at a limited conveying speed lower than a normal conveying speed.