Paper conveying apparatus, jam detection method, and computer-readable, non-transitory medium

A jam detection method comprising:

• acquiring a first sound signal from a first sound signal generator for generating a first sound signal corresponding to a sound generated by a paper during conveyance of the paper, at least a part of the first sound signal generator is provided near a separator;
• acquiring a second sound signal from a second sound signal generator for generating a second sound signal corresponding to the sound generated by the paper during conveyance of the paper, at least a part of the second sound signal generator is provided at least at one end of a conveyance path of the paper in the direction which perpendicularly intersects the paper conveyance direction;
• determining, by a computer, whether a jam has occurred based on the second sound signal according to a detection method;
• and
• changing by the computer the detection method based on the first sound signal, in the determining step.

A computer-readable, non-transitory medium storing a computer program, wherein the computer program causes a computer to execute a process, the process comprising:

• acquiring a first sound signal from a first sound signal generator for generating a first sound signal corresponding to a sound generated by a paper during conveyance of the paper, at least a part of the first sound signal generator is provided near a separator;
• acquiring a second sound signal from a second sound signal generator for generating a second sound signal corresponding to the sound generated by the paper during conveyance of the paper, at least a part of the second sound signal generator is provided at least at one end of a conveyance path of the paper in the direction which perpendicularly intersects the paper conveyance direction;
• determining whether a jam has occurred based on the second sound signal according to a detection method;
• and
• changing by the computer the detection method based on the first sound signal, in the determining step.