Aftertreatment apparatus, and controlling method, program and storage medium therefor

Abstract

Sheet thickness data obtained from the output of a sheet thickness detecting sensor are calculated to thereby calculate a sheet bundle thickness. When the sheet bundle thickness reaches a predetermined value, other aftertreatment differing from a set aftertreatment is executed.

1 . An aftertreatment apparatus comprising:
 a common conveying path for conveying sheets having images formed thereon by an image forming unit and a sheet to be inserted into the sheets in an order in which the sheets have been carried in;   an aftertreatment unit for forming a sheet bundle of the sheets conveyed through said common conveying path, and performing a set aftertreatment on the sheet bundle;   a sheet thickness detecting sensor for detecting a thickness of each sheet conveyed on said common conveying path; and   a controller for accumulating the thicknesses of the sheets detected by said sheet thickness detecting sensor to calculate a thickness of the sheet bundle, and controlling said aftertreatment unit so as to change the set aftertreatment to another aftertreatment when the calculated thickness of the sheet bundle reaches a predetermined value.