发明公开
- 专利标题： Image reading apparatus and copying apparatus
- 专利标题（中）： Bildabtastungs- und Kopiervorrichtung。
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申请号： EP93308413.9申请日： 1993-10-22
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公开(公告)号： EP0594444A1公开(公告)日： 1994-04-27
- 发明人: Utagawa, Tsutomu, c/o Canon Kabushiki Kaisha , Arimoto, Shinobu, c/o Canon Kabushiki Kaisha , Yoshinaga, Kazuo, c/o Canon Kabushiki Kaisha , Hayashi, Toshio, c/o Canon Kabushiki Kaisha , Nakai, Takehiko, c/o Canon Kabushiki Kaisha , Nagase, Tetsuya, c/o Canon Kabushiki Kaisha , Sasanuma, Nobuatsu, c/o Canon Kabushiki Kaisha
- 申请人： CANON KABUSHIKI KAISHA
- 申请人地址： 30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP
- 专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人地址： 30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP
- 代理机构： Beresford, Keith Denis Lewis
- 优先权： JP286348/92 19921023; JP286349/92 19921023; JP286380/92 19921023; JP286381/92 19921023
- 主分类号： G03G21/00
- IPC分类号： G03G21/00
摘要：
An image reading apparatus includes, as an arrangement for discriminating a specific image with high precision, first illumination means (206) for illuminating an object image so as to perform a normal reading operation, second illumination means (205) for illuminating the object image with light having characteristics different from those of the first illumination means so as to discriminate whether or not the object image is a specific image, and means (4301, 4302, 417) for adjusting the quantity of light emitted from each of the first and second illumination means.
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