Patent ID: 8998202
Filing Date: 2015-04-07
Classification: B65H,G03G

Abstract:
1. An image forming apparatus, comprising: a conveyance unit configured to convey a sheet along a conveying path; a microphone configured to collect sound generated by performing, by the conveyance unit, conveyance of the sheet; a sheet detecting unit configured to detect the sheet; a jam detecting unit configured to detect a jam of the sheet; a control unit configured to control to stop conveying the sheet by the conveyance unit if the jam of the sheet is detected by the jam detecting unit; an analysis unit configured to analyze a frequency of the sound during a period in which the sheet is being conveyed if the jam of the sheet is detected by the jam detecting unit; and a decision unit configured to determine whether or not an intensity of a frequency component falls within a predetermined range, that is corresponding to the frequency, for each frequency based on the analyzed frequency and decide whether or not the conveyance unit is enabled to discharge the sheet based on a number of frequencies whose intensity of the frequency component falls within the predetermined range; wherein the control unit causes, based on the analyzed frequency, in a case where a number of frequencies whose intensity of the frequency component falls within the predetermined range is smaller than a predetermined number, the conveyance unit to stop conveying the sheet and then discharge the sheet.