Canon Kabushiki Kaisha

Yukio Yoshida

Tsutomu Takayama

Yukitoshi Takeuchi

Shoichi Inoue

To provide an image reading apparatus provided with a pixel shifting mechanism for shifting an image incoming to a line sensor in a main scanning direction by substantial &frac12; of a pixel pitch, a scanning mechanism for scanning the line sensor in a sub-scanning direction and a control unit for performing scanning operation two times at a pitch almost equal to the pixel pitch at respective positions shifted to each other in the sub-scanning direction by a value equivalent to substantial &frac12; of the pixel pitch and causing the pixel shifting mechanism to perform the pixel shifting of &frac12; of the pixel pitch between first-time sub-scanning and second-time sub-scanning, and an image-signal generating unit for generating an image signal by averaging the pixel data values obtained through the two repetitions of sub-scanning between diagonal-directional adjacent pixels.

Growing community of inventors

Yoshidamachi, Japan

Yukio Yoshida