IMAGE READING DEVICE CAPABLE OF READING IMAGE DATA FROM DOCUMENT SHEET, IMAGE FORMING APPARATUS INCLUDING IMAGE READING DEVICE, AND ADJUSTMENT VALUE SETTING METHOD IMPLEMENTED IN IMAGE READING DEVICE

摘要

An image reading device includes a first setting processing portion, a second setting processing portion, and a third setting processing portion. The first setting processing portion, when first reference data has been read in a first reading process in which image data is read from a sheet placed on a sheet placement portion, sets a first adjustment value which is used in a shading correction. The second setting processing portion, when second reference data has been read in a second reading process in which image data is read from a sheet conveyed by a sheet conveying portion, sets a second adjustment value which is used in the shading correction. The third setting processing portion, in a case where only one of the first adjustment value and the second adjustment value has been set, sets the other based on the one that has been set.