Invention Application
US20120002247A1 IMAGE SCANNING APPARATUS AND CONTROL METHOD OF DOCUMENT SIZE DETECTION LIGHT SOURCE
审中-公开
图像扫描装置和文件尺寸检测光源的控制方法
- Patent Title: IMAGE SCANNING APPARATUS AND CONTROL METHOD OF DOCUMENT SIZE DETECTION LIGHT SOURCE
- Patent Title (中): 图像扫描装置和文件尺寸检测光源的控制方法
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Application No.: US13175028Application Date: 2011-07-01
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Publication No.: US20120002247A1Publication Date: 2012-01-05
- Inventor: Yusuke HASHIZUME , Sueo UENO , Katsuya NAGAMOCHI , Hiroyuki SHIRAISHI , Koji SHIMOKAWA , Naoya KOSEKI , Mitsuru HATANO
- Applicant: Yusuke HASHIZUME , Sueo UENO , Katsuya NAGAMOCHI , Hiroyuki SHIRAISHI , Koji SHIMOKAWA , Naoya KOSEKI , 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:
A first LED that is one of a plurality of LEDs arranged in the main scanning direction is turned on, and the presence of a document on a document table glass is determined by detection of reflected light from the document using a CCD sensor, and a second LED other than the first LED in addition to the first LED among the plurality of LEDs is turned on when it is determined that a document is placed on the document table glass, and the size of the document on the document table glass is determined based on a scanning result of the CCD sensor on the reflected light from the document caused by illumination from the first and the second LEDs and a detection result of a reflective photosensor.
Information query
