发明申请
US20120002246A1 IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND SIZE DETECTING METHOD
审中-公开
图像读取装置，图像形成装置和尺寸检测方法
- 专利标题： IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND SIZE DETECTING METHOD
- 专利标题（中）： 图像读取装置，图像形成装置和尺寸检测方法
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申请号： US13174609申请日： 2011-06-30
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公开(公告)号： US20120002246A1公开(公告)日： 2012-01-05
- 发明人: Hiroyuki SHIRAISHI , Naoya Koseki , Sueo Ueno , Katsuya Nagamochi , Yusuke Hashizume , Koji Shimokawa , Mitsuru Hatano
- 申请人： Hiroyuki SHIRAISHI , Naoya Koseki , Sueo Ueno , Katsuya Nagamochi , Yusuke Hashizume , Koji Shimokawa , Mitsuru Hatano
- 申请人地址： JP Tokyo JP Tokyo
- 专利权人： Toshiba Tec Kabushiki Kaisha,Kabushiki Kaisha Toshiba
- 当前专利权人： Toshiba Tec Kabushiki Kaisha,Kabushiki Kaisha Toshiba
- 当前专利权人地址： JP Tokyo JP Tokyo
- 主分类号： H04N1/04
- IPC分类号： H04N1/04
摘要：
According to an embodiment, an image reading apparatus includes: a light emitting body configured to emit light at illuminance lower than illuminance in reading an original document; a sensor configured to detect opening and closing of a cover; an image pickup element configured to pick up an image of the original document, on which the light from the light emitting body is irradiated, if the cover is open; and a control and determining section configured to turn on the light emitting body if the cover is opened and specify a pixel having a value exceeding a threshold from the picked-up image to determine the size of the original document.