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1. 发明公开

EP1858242A1 Image-reading device having flatbed scanner, detecting the presence of ambient light. 审中-公开
标题翻译： Bildlesevorrichtung mit Flachbettscanner，zur Detektion der Anwesenheit von Umgebungslicht。
公开(公告)号：EP1858242A1
公开(公告)日：2007-11-21
申请号：EP07251696.6
申请日：2007-04-23
申请人： Brother Kogyo Kabushiki Kaisha
发明人： Nakano, Keiichi, c/o Brother Kogyo K.K. , Ikeno, Takahiro, c/o Brother Kogyo K.K.
IPC分类号： H04N1/00 , H04N1/407
CPC分类号： H04N1/00795 , H04N1/00013 , H04N1/00034 , H04N1/0005 , H04N1/00063 , H04N1/00087 , H04N1/00814 , H04N1/00819 , H04N1/00835 , H04N1/1013 , H04N1/4076
摘要： An image-reading device includes a document supporting base, a document-pressing member, a reading unit, a controlling unit, and a determining unit. The document-supporting base has a transparent member on which a document is placed. The document-pressing member is disposed on the document-supporting base so as to cover the transparent member. The document-pressing member is capable of opening and closing on the document-supporting base. The reading unit has a light source and capable of reading an image from the document placed on the transparent member while the light source irradiates light on the document. The controlling unit is configured to control the reading unit to execute a first scanning operation to output image signals from the image on the document while the light source is lit, and a second scanning operation to output image signals from the image on the document while the light source is not lit. The determining unit is configured to determine whether outside light has penetrated the document-supporting base based on the image signals from the second scanning operation outputted from the reading unit.
摘要翻译：图像读取装置包括文件支撑基座，文件按压部件，读取单元，控制单元和确定单元。文档支持基座具有放置文档的透明构件。文件按压构件以覆盖透明构件的方式设置在文件支撑基座上。文件按压构件能够在文件支撑基座上打开和关闭。读取单元具有光源，并且能够在光源照射到文档上时从放置在透明构件上的文档读取图像。控制单元被配置为控制读取单元执行第一扫描操作以在光源点亮时从文档上的图像输出图像信号，以及第二扫描操作以从文档上的图像输出图像信号，同时光源不亮。确定单元被配置为基于从读取单元输出的第二扫描操作的图像信号来确定外部光是否已经穿透文档支持基座。

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