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

A recovery method comprising:

• acquiring a sound signal from a sound signal generator for generating a sound signal;
• determining whether a jam has occurred based on the sound signal;
• stopping conveyance of a paper when determining that the jam has occurred in the determining step;
• acquiring a state of the paper from a paper state detector for detecting a state of the paper;
• and
• performing, by a computer, a recovery processing which resumes conveyance of the paper when the paper state detector detects that the jam determination in the determining step is a false determination after stopping the conveyance of the paper in the stopping step.

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

• acquiring a sound signal from a sound signal generator for generating a sound signal;
• determining whether a jam has occurred based on the sound signal;
• stopping conveyance of a paper when determining that the jam has occurred in the determining step;
• acquiring a state of the paper from a paper state detector for detecting a state of the paper;
• and
• performing a recovery processing which resumes conveyance of the paper when the paper state detector detects that the jam determination in the determining step is a false determination after stopping the conveyance of the paper in the stopping step.