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    • 16. 发明授权
    • Image reading apparatus and image reading module
    • 图像读取装置和图像读取模块
    • US07518763B2
    • 2009-04-14
    • US10937332
    • 2004-09-10
    • Ryuuichi ShiraishiShunsuke HamasunaYuichi Mikuni
    • Ryuuichi ShiraishiShunsuke HamasunaYuichi Mikuni
    • H04N1/04
    • H04N1/02895H04N1/02815H04N1/1215H04N1/193H04N1/203H04N1/2032
    • A scanner is provided with an illumination lamp for emitting light to a first side of a document from one side of a transfer path and a CCD image sensor for receiving light reflected from the first side of the document, and a CIS provided in a document feeder is provided with an LED for emitting light to a second side of the document from the other side of the transfer path and a line sensor for receiving light reflected from the second side of the document. The illumination lamp is a xenon lamp, and the LED is a white LED having emission characteristics different from those of the xenon lamp. To the CIS, a filter is attached, which brings emission characteristics of light emitted from the LED onto a document closer to those of light emitted from the illumination lamp onto the document.
    • 扫描器设置有用于从传送路径的一侧向文档的第一侧发射光的照明灯和用于接收从文档的第一侧反射的光的CCD图像传感器,以及设置在文档馈送器中的CIS 设置有用于从传送路径的另一侧向文档的第二侧发射光的LED和用于接收从文档的第二面反射的光的线传感器。 照明灯是氙灯,LED是具有与氙灯不同的发光特性的白色LED。 向CIS连接有滤光片,其将从LED发射的光的发射特性带到更靠近从照明灯发射到文件上的光的文档。
    • 18. 发明授权
    • Image reading device and method of the same
    • 图像读取装置及其方法相同
    • US06937361B1
    • 2005-08-30
    • US09377908
    • 1999-08-20
    • Shin KondoShunsuke HamasunaKosuke ShimizuHiroshi Ishii
    • Shin KondoShunsuke HamasunaKosuke ShimizuHiroshi Ishii
    • H04N1/409G06T1/00H04N1/04H04N1/047H04N1/19
    • H04N1/4097
    • CCD1 as an image reading part reads a copy at the upstream and downstream of reading positions, and image data B and A at each of the reading positions are obtained from an output delay circuit and a shading correction circuit, respectively. A streak detector 8 compares the image data A with B, and outputs black streak detecting data indicating that the image data A contains black streaky noises, when the image data is not coincident in succession as to a plurality of pixels arrayed in the sub-scanning direction. A streak eliminator normally outputs the image data A, but it outputs the image data B instead of the image data A with regard to the pixels from which the black streak detecting data containing the noise is outputted. The image data reading device of present invention being thus constructed, the device is able to accurately detect streaky noises by adhesion of thrashes to the reading unit, even if there are speed variations in the copy feeding.
    • 作为图像读取部的CCD1在读取位置的上游和下游读取副本,并且从输出延迟电路和阴影校正电路分别获得每个读取位置处的图像数据B和A. 条纹检测器8将图像数据A与B进行比较,并且当副扫描中排列的多个像素的图像数据不连续地输出时,输出表示图像数据A包含黑色条纹噪声的黑色条纹检测数据 方向。 条纹消除器通常输出图像数据A,但是相对于从其输出包含噪声的黑条纹检测数据的像素输出图像数据B而不是图像数据A. 由此构成本发明的图像数据读取装置,即使在复印进给中存在速度变动的情况下,该装置也能够通过将腮红附着于读取单元来准确地检测出条纹噪声。