IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an image reading apparatus and image forming apparatus for improving the image quality of second image data read by a second sensor while using first image data read by a first sensor. SOLUTION: The image reading apparatus includes a color line sensor that converts the image of an original document into an electric signal at first resolution and a monochrome line sensor that converts the image of the original document into an electric signal at second resolution higher than the first resolution. The image reading apparatus further includes an image-quality improving circuit that calculates a correlation between first image data obtained by reading the image of the original document at the first resolution by the color line sensor and second image data obtained by reading the image of the original document at the second resolution by the monochrome line sensor and converts the first image data into third image data having resolution higher than the first resolution on the basis of the calculated correlation. COPYRIGHT: (C)2010,JPO&INPIT