Image reading device and image forming apparatus performing image correction using color patches on a curved surface

Abstract

Provided is an image reading device including an irradiation section that irradiates a reading position with light, a color chart that includes plural color patches, and that is provided on a curved surface of a rotatable roller, an image capturing section that captures an image of the color chart at the reading position, and that outputs image signals which express the captured image, a correction section that corrects the image signals using a correction coefficient corresponding to the curved surface, and a calibration section that performs calibration using the image signals, which are corrected by the correction section, and representative color values of the plural color patches, the representative color values being stored in advance.

Dependencies are inferred from the claim text.