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    Image reading apparatus and method, and image forming apparatus
    11.
    发明授权
    Image reading apparatus and method, and image forming apparatus 有权
    图像读取装置和方法以及图像形成装置

    公开(公告)号：US08810875B2

    公开(公告)日：2014-08-19

    申请号：US13728708

    申请日：2012-12-27

    Applicant: KYOCERA Document Solutions Inc.

    Inventor： Yasuyuki Yabuuchi

    IPC: H04N1/04 ,  H04N1/407 ,  H04N1/00 ,  G03G15/00 ,  H04N1/12 ,  H04N1/409

    CPC classification number: H04N1/121 ,  G03G15/602 ,  H04N1/00013 ,  H04N1/00037 ,  H04N1/00084 ,  H04N1/00588 ,  H04N1/407 ,  H04N1/4095 ,  H04N2201/0081 ,  H04N2201/0094

    Abstract: An image reading apparatus includes a tray to place a document, a conveying mechanism for a document, a reader for a document image, a detector for detecting a sheet jam, an image processor and a controller. The image processor performs an image processing for removing document smear from an image read by the reader. The controller controls a document conveying operation by the conveying mechanism and a document reading operation by the reader. If a jammed document is removed and the document is placed again on the document tray after the detector detects a sheet jam, the controller performs a sheet jam recovery processing for causing the conveying mechanism to convey the document again and causing the reader to read the image of the document. The image processor performs the image processing on the image of the jammed document read by the reader during the sheet jam recovery processing.

    Abstract translation: 图像读取装置包括用于放置文件的托盘，用于文件的传送机构，用于文件图像的读取器，用于检测卡纸的检测器，图像处理器和控制器。 图像处理器执行用于从读取器读取的图像中去除文档拖尾的图像处理。 控制器通过传送机构控制文件传送操作和读取器的文档读取操作。 如果在检测器检测到卡纸之后去除了卡住的文档并且文档再次放置在文档托盘上，则控制器执行卡纸恢复处理，以使输送机构再次传送文件并使读取器读取图像 的文件。 在卡纸恢复处理期间，图像处理器对由读取器读取的卡住的文件的图像执行图像处理。

    Image reading apparatus, image forming apparatus, and document area detection method
    12.
    发明授权
    Image reading apparatus, image forming apparatus, and document area detection method 有权

    公开(公告)号：US11290607B2

    公开(公告)日：2022-03-29

    申请号：US17179459

    申请日：2021-02-19

    Applicant: KYOCERA Document Solutions Inc.

    Inventor： Yasuyuki Yabuuchi

    IPC: H04N1/04 ,  H04N1/00

    Abstract: An image reading apparatus includes a reading processing unit that acquires image data including an image of a document placed on a document placement unit. A first detection processing unit detects a first line image whose width or density exceeds a predetermined first threshold value from the image data. A second detection processing unit detects a rectangular area that is defined by the first line image, included in the image data, and satisfies a predetermined detection condition. A third detection processing unit detects a second line image whose width or density exceeds a second threshold value smaller than the first threshold value from the rectangular area. A fourth detection processing unit detects, as document areas of the respective documents, the rectangular area not divided by the second line image and divided areas included in the rectangular area divided by the second line image.

    Image processing device having a function of automatically determining whether a document sheet is a color document or black and white document
    13.
    发明授权
    Image processing device having a function of automatically determining whether a document sheet is a color document or black and white document 有权

    公开(公告)号：US11233922B2

    公开(公告)日：2022-01-25

    申请号：US17269559

    申请日：2019-06-28

    Applicant: KYOCERA Document Solutions Inc.

    Inventor： Kunihiko Shimamoto ,  Ryota Kikuchi ,  Yasuyuki Yabuuchi

    IPC: H04N1/46 ,  H04N1/48 ,  H04N1/00

    Abstract: An image processing device includes: an estimated size setting section (ACS determination section 151) which sets a document size of a document sheet as an estimated size; a threshold deciding section (ACS determination section 151) which decides a first threshold according to the estimated size; and an ACS determination section (151) which determines that the document sheet is a color document sheet when a number of color pixels reaches the first threshold. When an actual size of the document sheet is smaller than the estimated size, the threshold deciding section decides a second threshold which is smaller than the first threshold, and the document sheet is determined to be a color document sheet when the number of color pixels is the second threshold or greater and is determined to be a black-and-white document sheet when the number of color pixels is smaller than the second threshold.

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