Patent ID: 8855512

Claim:
A load abnormality detection apparatus, comprising: first and second rotational members that contact each other directly or via a recording medium interposed therebetween; a first rotational speed information output part configured to output first rotational speed information according to a rotation of the first rotational member; a first motor that drives said first rotational member and is controlled by a first drive current determined according to the first rotational speed information; a second rotational speed information output part configured to output second rotational speed information according to a rotation of the second rotational member; and a second motor that drives said second rotational member and is controlled by a second drive current determined according to the second rotational speed information, said load abnormality detection apparatus further comprising: a first current detection part configured to detect the first drive current; a second current detection part configured to detect the second drive current; a first judgment part configured to judge whether said first drive current is within a first range; a second judgment part configured to judge whether said second drive current is within a second range; and an abnormality detection part configured to detect a load abnormality of at least one of the first and second rotational members and identify a cause of the load abnormality based on results from the first and second judgment parts.