Invention Application
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
- Patent Title: IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND SIZE DETECTING METHOD
- Patent Title (中): 图像读取装置，图像形成装置和尺寸检测方法
-
Application No.: US13174609Application Date: 2011-06-30
-
Publication No.: US20120002246A1Publication Date: 2012-01-05
- Inventor: Hiroyuki SHIRAISHI , Naoya Koseki , Sueo Ueno , Katsuya Nagamochi , Yusuke Hashizume , Koji Shimokawa , Mitsuru Hatano
- Applicant: Hiroyuki SHIRAISHI , Naoya Koseki , Sueo Ueno , Katsuya Nagamochi , Yusuke Hashizume , Koji Shimokawa , Mitsuru Hatano
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: Toshiba Tec Kabushiki Kaisha,Kabushiki Kaisha Toshiba
- Current Assignee: Toshiba Tec Kabushiki Kaisha,Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo JP Tokyo
- Main IPC: H04N1/04
- IPC: H04N1/04
Abstract:
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.
Information query
