IMAGE READING DEVICE AND IMAGE FORMING APPARATUS

摘要

In an image reading device, an image reading portion is fixed at a predetermined position on a route on which a document sheet is conveyed by a document sheet conveying portion, and can read an image from the document sheet. A color reference plate is disposed opposingly to the image reading portion, and is a member having a predetermined reference color at a part thereof opposing the image reading portion. An oscillation portion can oscillate the color reference plate in one of or both a primary scanning direction and a secondary scanning direction. A color reference data setting portion sets, based on image data read from the color reference plate by the image reading portion when the color reference plate is being oscillated by the oscillation portion, color reference data to be used for shading correction executed on image data read from the document sheet by the image reading portion.

主权项

1. An image reading device comprising:
a document sheet conveying portion configured to convey a document sheet; an image reading portion fixed at a predetermined position on a route on which the document sheet is conveyed by the document sheet conveying portion, and configured to read an image from the document sheet; a color reference plate disposed opposingly to the image reading portion and having a predetermined reference color at a part thereof opposing the image reading portion; an oscillation portion capable of oscillating the color reference plate in one of or both a primary scanning direction and a secondary scanning direction; and a color reference data setting portion configured to set, based on image data read from the color reference plate by the image reading portion when the color reference plate is being oscillated by the oscillation portion, color reference data to be used for shading correction executed on image data read from the document sheet by the image reading portion.