公开(公告)号：US20170155798A1

公开(公告)日：2017-06-01

申请号：US15327155

申请日：2014-07-21

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Choon Hwee Yap

IPC: H04N1/409 ,  H04N1/028 ,  H04N1/401 ,  H04N1/00

CPC classification number: H04N1/4097 ,  H04N1/00819 ,  H04N1/0281 ,  H04N1/0473 ,  H04N1/401 ,  H04N2201/0081 ,  H04N2201/044

Abstract: Example implementations relate to streak compensation. Some examples may calibrate an initial gain for data from an optical element based on a scan of a first calibration target, obtain an image of a second calibration target from the optical element using the calibrated initial gain, and detect at least one streak in the image of the second calibration target. Some examples may also record data representing the at least one detected streak and may calibrate a final gain for the optical element based on the initial gain and the data representing the at least one detected streak.

公开(公告)号：US20160028922A1

公开(公告)日：2016-01-28

申请号：US14875857

申请日：2015-10-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke MORIKAWA

IPC: H04N1/409 ,  H04N1/00 ,  H04N1/62 ,  H04N1/12 ,  H04N1/193

CPC classification number: H04N1/4097 ,  H04N1/00013 ,  H04N1/00023 ,  H04N1/00037 ,  H04N1/00039 ,  H04N1/00087 ,  H04N1/00092 ,  H04N1/12 ,  H04N1/1235 ,  H04N1/125 ,  H04N1/193 ,  H04N1/62 ,  H04N2201/0081 ,  H04N2201/044

Abstract: An image reading apparatus capable of accurately detecting abnormal pixels caused by a contaminant such as dirt, stain, or flaw on a moving document reading glass being read. An image processing unit of the image reading apparatus performs a first abnormal pixel detection process to detect pixel signals representing abnormal pixels and output from image sensors for respective colors when a reading unit reads a guide plate in a main scanning direction in a state before an original passes through a moving document reading position, performs a second abnormal pixel detection process to detect pixel signals representing abnormal pixels and output from the image sensors when an original being conveyed is read by the reading unit in the main scanning direction, and detects a main scanning direction of abnormal pixels based on results of these detection processes.

Abstract translation: 一种图像读取装置，其能够准确地检测由正在读取的移动文件读数玻璃上的诸如污物，污点或缺陷的污染物引起的异常像素。 图像读取装置的图像处理单元执行第一异常像素检测处理，以在原稿之前的状态下，当读取单元在主扫描方向上读取导板时，检测表示异常像素的像素信号并从各种颜色的图像传感器输出 通过移动文档读取位置，执行第二异常像素检测处理以检测表示异常像素的像素信号并且当正被传送的原稿在主扫描方向上被读取单元读取时，从图像传感器输出，并且检测主扫描 基于这些检测过程的结果，异常像素的方向。

公开(公告)号：US20150381844A1

公开(公告)日：2015-12-31

申请号：US14845718

申请日：2015-09-04

Applicant: Brother Kogyo Kabushiki Kaisha

Inventor： Takahiro Ikeno ,  Yoichi Susaki

IPC: H04N1/00 ,  H04N1/407 ,  H04N1/193 ,  H04N1/10

CPC classification number: H04N1/00997 ,  H04N1/00615 ,  H04N1/0313 ,  H04N1/0464 ,  H04N1/1017 ,  H04N1/1061 ,  H04N1/12 ,  H04N1/123 ,  H04N1/193 ,  H04N1/4076 ,  H04N2201/0081 ,  H04N2201/0094 ,  H04N2201/0422 ,  H04N2201/044

Abstract: An image scanner includes a transparent plate, a scanning device, a driving device, a positioning member, a light absorbing portion and a white reference portion. The transparent plate has an original placing surface. The scanning device irradiates an original with light by means of a light source and scans reflected light from the original. The driving device reciprocates the scanning device along the transparent plate. The positioning member positions the original placed on the original placing surface of the transparent plate. The light absorbing portion, which is disposed on the original placing surface side of the positioning member and at substantially a central portion of the positioning member in moving directions of the scanning device, absorbs ambient light entering to the original placing surface side of the positioning member through the transparent plate. The white reference portion is provided to the original placing surface side of the positioning member.

Abstract translation: 图像扫描器包括透明板，扫描装置，驱动装置，定位构件，光吸收部分和白色基准部分。 透明板具有原始放置面。 扫描装置利用光源照射原稿并扫描来自原稿的反射光。 驱动装置沿着透明板往复移动扫描装置。 定位构件使放置在透明板的原始放置表面上的原稿定位。 设置在定位构件的原始放置面侧的光吸收部和位于扫描装置的移动方向上的定位构件的大致中央部的吸光部吸收进入定位构件的原始放置面侧的环境光 通过透明板。 白色基准部分设置在定位部件的原始放置面侧。

公开(公告)号：US09191549B2

公开(公告)日：2015-11-17

申请号：US13076577

申请日：2011-03-31

Applicant: Daisuke Morikawa

Inventor： Daisuke Morikawa

IPC: H04N1/46 ,  H04N1/409 ,  H04N1/12 ,  H04N1/193

CPC classification number: H04N1/4097 ,  H04N1/00013 ,  H04N1/00023 ,  H04N1/00037 ,  H04N1/00039 ,  H04N1/00087 ,  H04N1/00092 ,  H04N1/12 ,  H04N1/1235 ,  H04N1/125 ,  H04N1/193 ,  H04N1/62 ,  H04N2201/0081 ,  H04N2201/044

Abstract: An image reading apparatus capable of accurately detecting abnormal pixels caused by a contaminant such as dirt, stain, or flaw on a moving document reading glass being read. An image processing unit of the image reading apparatus performs a first abnormal pixel detection process to detect pixel signals representing abnormal pixels and output from image sensors for respective colors when a reading unit reads a guide plate in a main scanning direction in a state before an original passes through a moving document reading position, performs a second abnormal pixel detection process to detect pixel signals representing abnormal pixels and output from the image sensors when an original being conveyed is read by the reading unit in the main scanning direction, and detects a main scanning direction of abnormal pixels based on results of these detection processes.

Abstract translation: 一种图像读取装置，其能够准确地检测由正在读取的移动文件读数玻璃上的诸如污物，污点或缺陷的污染物引起的异常像素。 图像读取装置的图像处理单元执行第一异常像素检测处理，以在原稿之前的状态下，当读取单元在主扫描方向上读取导板时，检测表示异常像素的像素信号并从各种颜色的图像传感器输出 通过移动文档读取位置，执行第二异常像素检测处理以检测表示异常像素的像素信号并且当正被传送的原稿在主扫描方向上被读取单元读取时，从图像传感器输出，并且检测主扫描 基于这些检测过程的结果，异常像素的方向。

公开(公告)号：US08970928B2

公开(公告)日：2015-03-03

申请号：US13859078

申请日：2013-04-09

Applicant: Canon Kabushiki Kaisha

Inventor： Junya Arakawa

IPC: H04N1/04 ,  H04N1/40 ,  G06F3/12 ,  G06K15/00 ,  G03G15/00 ,  G03G15/01 ,  B41F13/64 ,  G06F17/00 ,  H04N1/12 ,  H04N1/00 ,  H04B1/12

CPC classification number: H04N1/121 ,  H04B1/12 ,  H04N1/00578 ,  H04N1/0058 ,  H04N1/00596 ,  H04N1/00649 ,  H04N1/12 ,  H04N2201/0091 ,  H04N2201/044

Abstract: This invention provides a technique of preventing a collision between an original document and a printing material on a conveyance path when an image forming apparatus executes both additional printing on the original document and printing on the printing material. In a case where both additional printing on an original document and printing on a printing material are executed, the image forming apparatus according to one aspect of the invention conveys a read original document to a transfer unit through a conveyance path commonly used for an original document and sheet, and prints an image to be added on the original document. After the original document is conveyed to the transfer unit through the conveyance path, the image forming apparatus feeds a sheet from a sheet feeding unit to the conveyance path, and performs copying on the sheet in the transfer unit.

Abstract translation: 本发明提供了一种防止图像形成装置在原始文件上进行附加打印并在打印材料上进行打印时在输送路径上的原稿与打印材料之间的碰撞的技术。 在执行在原始文档上的附加打印和打印材料上的打印的情况下，根据本发明的一个方面的图像形成装置通过通常用于原始文档的传送路径将读取的原始文档传送到传送单元 并打印要添加到原始文档上的图像。 在通过传送路径将原始文档传送到传送单元之后，图像形成装置将片材从片材馈送单元馈送到传送路径，并且在传送单元中的片材上进行复印。

公开(公告)号：US08792148B2

公开(公告)日：2014-07-29

申请号：US12904699

申请日：2010-10-14

Applicant: Takayuki Sugiyama ,  Tadao Hayashide

Inventor： Takayuki Sugiyama ,  Tadao Hayashide

IPC: H04N1/56 ,  H04N1/58 ,  H04N1/60 ,  H04N1/00 ,  H04N1/04

CPC classification number: H04N1/193 ,  H04N1/00002 ,  H04N1/00018 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/1017 ,  H04N1/486 ,  H04N2201/0006 ,  H04N2201/044

Abstract: An inspection method for an image reading apparatus where image information of an original is imaged on light receiving element lines arranged in a main scanning direction to read the information on different colors. The method includes: acquiring a first color misregistration from image information based on a first striped pattern located at a position optically equivalent to a surface of the original with respect to the light receiving element lines, the first pattern having white and black lines aligned, and having longitudinal directions of the white and black lines aligned in a sub-scanning direction; acquiring a second color misregistration from image information based on a second striped pattern having white and black lines aligned, and having longitudinal directions of the white and black lines aligned at an angle from the main scanning direction; and calculating a color misregistration in the sub-scanning direction based on the measured color misregistrations.

Abstract translation: 一种用于图像读取装置的检查方法，其中原稿的图像信息被成像在沿主扫描方向布置的光接收元件线上以读取关于不同颜色的信息。 该方法包括：基于相对于光接收元件线与原始表面光学相当的位置处的第一条纹图案从图像信息中获取第一颜色重合失调，所述第一图案具有对齐的白线和黑线，以及 所述白色和黑色线的纵向方向在副扫描方向上排列; 从基于具有对准的白色和黑色线的第二条纹图案的图像信息中获取第二种颜色不对齐，并且使白色和黑色线的纵向方向与主扫描方向成一定角度排列; 以及基于所测量的颜色不对准来计算副扫描方向上的颜色对准。

公开(公告)号：US08760736B2

公开(公告)日：2014-06-24

申请号：US12831977

申请日：2010-07-07

Applicant: Tomohiro Tachikawa

Inventor： Tomohiro Tachikawa

IPC: H04N1/04 ,  H04N5/00 ,  H04N1/407

CPC classification number: H04N1/00002 ,  H04N1/00013 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/00084 ,  H04N1/4097 ,  H04N2201/044

Abstract: In an image reading apparatus, if a foreign substance that was initially present on a document plate is removed by motion of a document being conveyed, a correct read luminance value is employed, instead of a value calculated by interpolation, for a pixel at which there was initially the foreign substance but there is no longer foreign substance thereby preventing degradation due to the interpolation. If a foreign substance on the document plate is detected after the conveying of the document by the conveying unit is started, correcting by a correcting unit is performed. In a case where the foreign substance on the document plate disappears during the conveying of the document by the conveying unit and the foreign substance is no longer detected, the correcting by the correcting unit is not performed, but image data is produced according to the image of the document read by the reading unit.

Abstract translation: 在图像读取装置中，如果最初存在于原稿台上的异物通过正在传送的文件的移动被移除，则采用正确的读取亮度值而不是通过插值计算的值，对于其中的像素 最初是外来物质，但不再有异物，从而防止由于内插而引起的劣化。 在开始通过传送单元传送文件之后检测到文档板上的异物时，执行由校正单元进行的校正。 在由输送单元输送文件期间原稿板上的异物消失并且不再检测到异物的情况下，不执行校正单元的校正，而是根据图像产生图像数据 由阅读单位读取的文件。

公开(公告)号：US08659802B2

公开(公告)日：2014-02-25

申请号：US13551646

申请日：2012-07-18

Applicant: Takahiro Ikeno ,  Yoichi Susaki

Inventor： Takahiro Ikeno ,  Yoichi Susaki

IPC: H04N1/40

CPC classification number: H04N1/00997 ,  H04N1/00615 ,  H04N1/0313 ,  H04N1/0464 ,  H04N1/1017 ,  H04N1/1061 ,  H04N1/12 ,  H04N1/123 ,  H04N1/193 ,  H04N1/4076 ,  H04N2201/0081 ,  H04N2201/0094 ,  H04N2201/0422 ,  H04N2201/044

Abstract: An image scanner includes a transparent plate, a scanning device, a driving device, a positioning member, a light absorbing portion and a white reference portion. The transparent plate has an original placing surface. The scanning device irradiates an original with light by means of a light source and scans reflected light from the original. The driving device reciprocates the scanning device along the transparent plate. The positioning member positions the original placed on the original placing surface of the transparent plate. The light absorbing portion, which is disposed on the original placing surface side of the positioning member and at substantially a central portion of the positioning member in moving directions of the scanning device, absorbs ambient light entering to the original placing surface side of the positioning member through the transparent plate. The white reference portion is provided to the original placing surface side of the positioning member.

Abstract translation: 图像扫描器包括透明板，扫描装置，驱动装置，定位构件，光吸收部分和白色基准部分。 透明板具有原始放置面。 扫描装置利用光源照射原稿并扫描来自原稿的反射光。 驱动装置沿着透明板往复移动扫描装置。 定位构件使放置在透明板的原始放置表面上的原稿定位。 设置在定位构件的原始放置面侧的光吸收部和位于扫描装置的移动方向上的定位构件的大致中央部的吸光部吸收进入定位构件的原始放置面侧的环境光 通过透明板。 白色基准部分设置在定位部件的原始放置面侧。

公开(公告)号：US08643921B2

公开(公告)日：2014-02-04

申请号：US13076573

申请日：2011-03-31

Applicant: Kentaro Sugiyama

Inventor： Kentaro Sugiyama

IPC: H04N1/46 ,  H04N1/04

CPC classification number: H04N1/00002 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00063 ,  H04N1/00087 ,  H04N1/00933 ,  H04N1/02835 ,  H04N1/1013 ,  H04N1/193 ,  H04N1/484 ,  H04N2201/0081 ,  H04N2201/044

Abstract: An image reader is provided, which includes a light-emitting-timing setting unit configured to divide a non-light-emitting time during which none of light sources emits light in a predetermined reading period into a plurality of segmental non-light-emitting times and set a light-emitting moment separately for each light source as a moment to emit the light in the predetermined reading period, such that the segmental non-light-emitting times are arranged in a dispersed manner in the predetermined reading period, and a controller configured to control each light source to emit the light during a light-emitting time determined separately for each light source at the light-emitting moment set by the light-emitting-timing setting unit.

Abstract translation: 提供了一种图像读取器，其包括：发光定时设定单元，被配置为将预定的读取期间内的光不发光的非发光时间分割为多个非发光次数 并且在预定的读取期间内分别设定发光矩，作为在规定的读取期间发光的时刻，使得在规定的读取期间分散非发光次数分散配置，控制器 被配置为在由所述发光定时设定单元设定的发光力矩处为每个光源分别确定的发光时间期间控制每个光源发光。

公开(公告)号：US20130335788A1

公开(公告)日：2013-12-19

申请号：US13913142

申请日：2013-06-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takehito Utsunomiya

IPC: H04N1/00

CPC classification number: H04N1/00801 ,  H04N1/00572 ,  H04N1/4076 ,  H04N2201/044

Abstract: An image processing apparatus includes an acquisition unit configured to acquire luminance information of a white reference member by reading the white reference member with an image reading unit including a sensor while rotating the image reading unit in units of a predetermined angle, and a correction unit configured to correct the luminance information acquired by the acquisition unit using a correction coefficient predetermined for each rotation angle of the image reading unit.

Abstract translation: 一种图像处理装置，包括：获取单元，被配置为通过在以预定角度为单位旋转图像读取单元的同时通过包括传感器的图像读取单元读取白色基准构件来获取白色参考构件的亮度信息;以及校正单元， 使用对于图像读取单元的每个旋转角度预先确定的校正系数来校正由获取单元获取的亮度信息。