IMAGE READING APPARATUS AND DOCUMENT SIZE DETECTING METHOD

    公开(公告)号:US20180332183A1

    公开(公告)日:2018-11-15

    申请号:US15968394

    申请日:2018-05-01

    IPC分类号: H04N1/00 H04N1/407

    摘要: An image reading apparatus including a controller configured to perform an update processing for updating shading correction data stored in a memory by a generation processing of generating shading correction data based on an image signal of a reference member and perform a size determination processing for determining a size of a document based on an image signal of the document, wherein, when the document on the document platen is read, the controller performs the generation processing before the document is read, and an image processing portion performs the shading correction using the shading correction data generated before the document is read, and wherein, when the size determination processing is performed, the image processing portion performs the shading correction using the shading correction data stored in the memory, and the update processing is not performed.

    IMAGE SCANNING APPARATUS, AND METHOD AND COMPUTER-READABLE MEDIUM THEREFOR

    公开(公告)号:US20180213101A1

    公开(公告)日:2018-07-26

    申请号:US15872235

    申请日:2018-01-16

    IPC分类号: H04N1/00 H04N1/028

    摘要: An image scanning apparatus includes a controller configured to acquire image data by scanning a document and a particular range of a document pressing surface, detect black edge positions by detecting, from the image data, black pixels having gradation values less than a white gradation value, determine a sheet type of the document based on the gradation values of the black pixels, detect white edge positions by detecting, from the image data, white pixels having gradation values equal to or more than the white gradation value. The controller is further configured to, when the sheet type is a thin paper, detect, as the white pixels, pixels having gradation values equal to or more than a first threshold, and when the sheet type is a thick paper, detect, as the white pixels, pixels having gradation values equal to or more than a second threshold.

    IMAGE READING APPARATUS AND IMAGE READING METHOD

    公开(公告)号:US20170126913A1

    公开(公告)日:2017-05-04

    申请号:US15334086

    申请日:2016-10-25

    发明人: Hirotaka Seki

    IPC分类号: H04N1/00

    摘要: An image reading apparatus capable of recognizing edge portions of an original image with precision is provided. The image reading apparatus uses an image reading unit to scan an original being conveyed and read an image of the original. The image reading apparatus includes an edge information obtaining unit and an edge determining unit. The edge information obtaining unit detects an image of an edge portion of the original image and obtains, for each point in a main scanning direction, edge information, which indicates whether or not an edge portion image is detected at the point in a sub-scanning direction. The edge determining unit conducts detection from at least one of two directions of the main scanning direction to detect a point where a given number of successive edge portion images are detected, and obtains an edge portion based on the detected point.

    IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD
    9.
    发明申请
    IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD 有权
    图像读取装置,图像形成装置和图像读取方法

    公开(公告)号:US20160277611A1

    公开(公告)日:2016-09-22

    申请号:US14812522

    申请日:2015-07-29

    发明人: Akira YAMAZAKI

    IPC分类号: H04N1/00

    摘要: An image reading device includes a reading member that reads an image of a document at a reading position that is set in a transport path of the document, a skew detector that detects an amount of skew of the document with respect to a transport direction of the document, a distortion detector that detects an amount of distortion in the document that has been read, the amount of distortion being a deviation, from a right angle, of an angle formed by a direction transverse to the transport direction of the document with the transport direction of the document, and an image correcting unit that rotates the image that has been read, in accordance with an amount that cancels the amount of skew detected by the skew detector, and corrects distortion of the read image in accordance with an amount that cancels the amount of distortion.

    摘要翻译: 图像读取装置包括:读取部件,其在设置在文档的传送路径中的读取位置读取文档的图像;歪斜检测器,其检测文档相对于传送方向的偏斜量; 文档,失真检测器,其检测已经读取的文档中的失真量,扭曲量是由横向于文档的传送方向的方向与传输方向形成的角度的直角偏离的偏差量 文件的方向,以及图像校正单元,其根据消除由偏斜检测器检测到的偏斜量的量旋转已经读取的图像,并且根据取消的量来校正读取的图像的失真 失真量。

    PRINTER
    10.
    发明申请
    PRINTER 审中-公开
    打印机

    公开(公告)号:US20160212285A1

    公开(公告)日:2016-07-21

    申请号:US14990128

    申请日:2016-01-07

    申请人: Avision, Inc.

    发明人: Chia-Hsin LIN

    IPC分类号: H04N1/00

    摘要: A printer is disclosed, which comprises a frame, an image forming module, a controller, a light guide unit, and an optical detector. The image forming module is disposed opposite to the frame and forms a passage. The light guide unit is disposed in the frame and is connected to the controller. The optical detector comprises an illuminating part and a receiving part. The illuminating part illuminates a beam to the light guide d unit, and the receiving part is for receiving the light.

    摘要翻译: 公开了一种打印机,其包括框架,图像形成模块,控制器,导光单元和光学检测器。 图像形成模块与框架相对设置并形成通道。 光导单元设置在框架中并连接到控制器。 光检测器包括照明部分和接收部分。 照明部将光束照射到光导d单元,并且接收部用于接收光。