Patent ID: 9100511
Filing Date: 2015-08-04
Classification: H04N

Abstract:
1. An image reading device comprising: a storage unit that stores, in an associated manner, error information on errors occurred due to past image reading operations and operator information on operators who produced the errors; and a determining unit that determines whether an error occurred due to the image reading operation of a specific operator among the operators is an operator-dependent error, based on the error information and the operator information stored in the storage unit, wherein the determining unit calculates a trend of an error occurrence rate for each operator, based on the error information and the operator information stored in the storage unit, and determines that the error occurred due to the image reading operation of the specific operator is a device-dependent error when the error occurrence rates of all the operators show an upward trend, or the operator-dependent error when the error occurrence rate of the specific operator shows such a trend that it is protrudingly higher than error occurrence rates of other operators.