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    IMAGE-READING DEVICE
    103.
    发明公开
    IMAGE-READING DEVICE 审中-公开

    公开(公告)号：EP3379815A1

    公开(公告)日：2018-09-26

    申请号：EP16866444.9

    申请日：2016-11-18

    Applicant: Canon Denshi Kabushiki Kaisha

    Inventor： GOTOH, Yuji ,  KOMURO, Hiroshi ,  NISHI, Tatsuya ,  TANIIKE, Yoshihiro

    IPC: H04N1/04 ,  G03B27/62 ,  G03G15/00 ,  G06T1/00 ,  H04N1/00 ,  H04N1/028

    CPC classification number: H04N1/4095 ,  G03B27/62 ,  G03G15/00 ,  G06T1/00 ,  H04N1/00 ,  H04N1/00742 ,  H04N1/028 ,  H04N1/04 ,  H04N2201/044

    Abstract: According to this invention, there is provided a technique of switching a background without increasing the size of an overall apparatus. There is provided an image reading apparatus characterized by including a first reading sensor provided in a first reading unit and configured to read one surface of the sheet moving along a conveyance path, a second reading sensor provided in a second reading unit provided to face the first reading sensor via the conveyance path and configured to read an image on the other surface of the sheet, a first background portion serving as a reading background of the first reading sensor, a second background portion serving as a reading background of the second reading sensor, and a moving portion configured to integrally move the first reading sensor and the second background portion along the conveyance path, wherein the first reading unit includes a sensor case in which the first reading sensor is provided, and the sensor case is fixed to the apparatus main body.

    Structure for preventing extraneous light from entering image reading apparatus
    107.
    发明公开
    Structure for preventing extraneous light from entering image reading apparatus 审中-公开
    e en t t t t t t t t t t t t t t t t t t t t

    公开(公告)号：EP1309168A3

    公开(公告)日：2005-03-16

    申请号：EP02023892.9

    申请日：2002-10-24

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Shishido, Kazuo, c/o Canon Kabushiki Kaisha

    IPC: H04N1/031 ,  H04N1/407 ,  H04N1/04

    CPC classification number: H04N1/0464 ,  H04N1/1017 ,  H04N1/1215 ,  H04N1/193 ,  H04N2201/02497 ,  H04N2201/044 ,  H04N2201/0446

    Abstract: An image reading apparatus for reading a document has an image sensor unit, which is moved along a platen glass (107,109) in a sub-scanning direction, mounting a LED, a light guide and a sensor. A white reference panel (132) for use of shading correction is provided on the platen glass on the side thereof opposite to the image sensor unit. Light shield plates (131) are provided on the platen glass on the side facing the image sensor unit along both sides of the white reference panel.

    Abstract translation: 用于读取原稿的图像读取装置具有在副扫描方向上沿台板玻璃（107,109）移动的图像传感器单元，安装LED，导光体和传感器。 在与图像传感器单元相对的一侧的压板玻璃上设置用于阴影校正的白色参考面板（132）。 在白色参考面板两侧的面对图像传感器单元的一侧的台板玻璃上设有遮光板（131）。

    Image reading apparatus and method of obtaining white reference data for shading correction
    108.
    发明公开
    Image reading apparatus and method of obtaining white reference data for shading correction 有权
    Bildlesevorrichtung und Verfahren zur Erlangung von Weiss-ReferenzdatenfürSchattierungskorrektur

    公开(公告)号：EP1463298A1

    公开(公告)日：2004-09-29

    申请号：EP04002934.0

    申请日：2004-02-10

    Applicant: Ricoh Company Ltd.

    Inventor： Nakaya, Kazuhiko

    IPC: H04N1/407 ,  H04N1/401

    CPC classification number: H04N1/4076 ,  H04N2201/044

    Abstract: A method and apparatus of image reading includes a reader, a contact glass, a reference, and a carrier. The reader is immovably mounted and reads one side of an original document being conveyed at a reading position. The contact glass includes a surface contacting the original document. The reference is placed at a side of the contact glass opposite to the surface and movable in an area including the reading position and a standby position. The reference includes a surface facing the reader and having a predetermined color for providing shading data used for a shading correction. The carrier moves the reference to the reading position. The reader obtains the shading data by reading the predetermined color on the surface of the reference at the reading position.

    Abstract translation: 图像读取的方法和装置包括读取器，接触玻璃，参考和载体。 阅读器不可移动地安装并且读取在读取位置被传送的原始文档的一侧。 接触玻璃包括接触原始文件的表面。 参考放置在与表面相对的接触玻璃的一侧，并且可在包括读取位置和备用位置的区域中移动。 参考文献包括面向读取器并具有预定颜色的表面，用于提供用于阴影校正的阴影数据。 载体将参考值移动到读取位置。 读取器通过在读取位置读取基准表面上的预定颜色来获得阴影数据。

    Multiple function calibration for document scanner
    109.
    发明公开
    Multiple function calibration for document scanner 审中-公开
    多功能校准文档扫描仪

    公开(公告)号：EP1217822A3

    公开(公告)日：2004-08-25

    申请号：EP01129653.0

    申请日：2001-12-12

    Applicant: Xerox Corporation

    Inventor： Morris, Daniel L. ,  Spencer, Christopher J. ,  Poirier, Michael J. ,  Shelhart, Timothy G.

    IPC: H04N1/12 ,  H04N1/00

    CPC classification number: H04N1/0071 ,  H04N1/00795 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/044

    Abstract: A compact structure and rapid method for calibrating a document scanner provides for a substantially cylindrical calibration casing having a central axis and an outer surface, with a brightness calibration section of the outer surface encompassing a portion of the circumference of the outer surface, a document width detection segment encompassing a second portion of the circumference of the outer surface, and a document backer element encompassing a third segment of the circumference of the outer surface of the casing. A driver selectively positions the casing in different rotational positions in which the different segments of the outer surface of the cylinder face the optical element of the scanner.

    Method and system for calibrating a look-down linear array scanner utilizing a folded optical path
    110.
    发明公开
    Method and system for calibrating a look-down linear array scanner utilizing a folded optical path 审中-公开
    用于校准具有光路缺口线性Aufsichtabtasters方法和装置

    公开(公告)号：EP1176798A3

    公开(公告)日：2004-02-04

    申请号：EP01305517.3

    申请日：2001-06-26

    Applicant: Hewlett-Packard Company

    Inventor： Gann, Robert G.

    IPC: H04N1/19

    CPC classification number: H04N1/0303 ,  H04N1/03 ,  H04N1/0305 ,  H04N1/19 ,  H04N2201/02497 ,  H04N2201/0436 ,  H04N2201/044

    Abstract: A system and method are disclosed which provide a look-down digital imaging device 300 capable of scanning a calibration area 314 included within such look-down digital imaging device to capture image data for the calibration area and calibrate itself based on analysis of such captured image data. More specifically, a preferred embodiment includes a calibration area that is integrated internally within the look-down digital imaging device. When performing calibration in such a preferred embodiment, the scan head 304 of the look-down digital imaging device is operable to align itself with the calibration area to allow for a scan of the calibration area (i.e., the capture of digital image data of the calibration area). In one embodiment, a look-down digital imaging device does not achieve a focused scan of the calibration area, but is capable of utilizing captured unfocused digital imaging data for calibration. In a preferred embodiment, a look-down digital imaging device achieves a focused scan of the calibration area, thereby enabling a further accurate calibration. More specifically, a preferred embodiment folds the optical path of the reflected light 322 A from the calibration area in order to have the optical path of such calibration area accurately mimic the optical path of an original to be scanned, thereby allowing for focused calibration to be achieved.

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