IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD

摘要

An image reading device includes a density reference plate, an image reading section, a storage section, and a control section. When density reference data for at least one of a plurality of colors with respect to at least one of a plurality of regions is abnormal data, the control section calculates a change rate. The change rate is a rate of change between preliminary density reference data and density reference data both for one of the colors other than the at least one color with respect to the at least one region. The control section corrects the abnormal data based on the change rate calculated with respect to the at least one region and also on preliminary density reference data for the at least one color with respect to the at least one region.

主权项

1. An image reading device comprising:
a density reference plate; an image reading section configured to obtain, with respect to each of a plurality of regions, density reference data for each of a plurality of colors by reading the density reference plate; a storage section configured to store, with respect to each of the plurality of regions, preliminary density reference data for each of the plurality of colors; and a control section configured to
determine, with respect to each of the plurality of regions, whether or not the density reference data obtained for each of the plurality of colors by the image reading section is abnormal data,calculate a change rate when the density reference data for at least one of the plurality of colors with respect to at least one of the plurality of regions is abnormal data, the change rate being a rate of change between the preliminary density reference data and the density reference data both for one of the colors other than the at least one color with respect to the at least one region, andcorrect the abnormal data based on the change rate calculated with respect to the at least one region and also on the preliminary density reference data stored for the at least one color with respect to the at least one region.