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    Image forming apparatus for improving accuracy in alignment of an image to be printed on two surfaces of a recording medium by measuring a size of the recording medium
    1.
    发明授权
    Image forming apparatus for improving accuracy in alignment of an image to be printed on two surfaces of a recording medium by measuring a size of the recording medium 有权
    图像形成装置，用于通过测量记录介质的尺寸来提高记录介质的两个表面上的待印刷图像的对准精度

    公开(公告)号：US09179027B2

    公开(公告)日：2015-11-03

    申请号：US14059823

    申请日：2013-10-22

    申请人： Makoto Nakura ,  Naoto Ueda ,  Shingo Takai ,  Satoshi Ueda

    发明人： Makoto Nakura ,  Naoto Ueda ,  Shingo Takai ,  Satoshi Ueda

    IPC分类号： G06K15/16 ,  H04N1/00 ,  G06K15/02 ,  G03G15/00 ,  B65H7/02

    CPC分类号： H04N1/00748 ,  G03G15/5029 ,  G03G2215/00734 ,  G03G2215/0129 ,  G06K15/1868 ,  H04N1/00578 ,  H04N1/00594 ,  H04N1/0071 ,  H04N1/00734 ,  H04N1/00779

    摘要： An image forming apparatus includes an image forming unit to form an image on a recording medium; an inverting transport unit to invert first and second surfaces of the recording medium, and front and rear ends of the recording medium to transport the inverted recording medium; a recording medium width measuring unit to measure an end position of the recording medium in a width direction orthogonal to a transporting direction of the recording medium at a measuring position having an approximately identical distance from one end of the recording medium in the transporting direction before and after the image is formed on the recording medium; and a correcting unit to correct an image to be formed on a subsequent recording medium based on a change in a shape of the recording medium computed based on a measured result from the recording medium width measuring unit.

    摘要翻译： 图像形成装置包括：图像形成单元，用于在记录介质上形成图像; 反转传送单元，用于翻转记录介质的第一和第二表面以及记录介质的前端和后端，以传输倒置的记录介质; 记录介质宽度测量单元，用于测量记录介质在与记录介质的输送方向正交的宽度方向上的测量位置处的测量位置，所述测量位置距离记录介质在输送方向之前的一端具有大致相同的距离; 在图像形成在记录介质上之后; 以及校正单元，用于基于根据来自记录介质宽度测量单元的测量结果计算的记录介质的形状的变化来校正将在随后的记录介质上形成的图像。

    Image forming apparatus for calculating shape of recording medium based on angles between conveying direction and straight lines using upstream and downstream detectors
    5.
    发明授权
    Image forming apparatus for calculating shape of recording medium based on angles between conveying direction and straight lines using upstream and downstream detectors 有权
    用于使用上游和下游检测器基于输送方向和直线之间的角度计算记录介质的形状的图像形成装置

    公开(公告)号：US09354537B2

    公开(公告)日：2016-05-31

    申请号：US13951007

    申请日：2013-07-25

    申请人： Naoto Ueda ,  Makoto Nakura ,  Shingo Takai ,  Satoshi Ueda ,  Koichi Kudo

    发明人： Naoto Ueda ,  Makoto Nakura ,  Shingo Takai ,  Satoshi Ueda ,  Koichi Kudo

    IPC分类号： G06K15/16 ,  G03G15/01 ,  G03G15/00

    CPC分类号： G03G15/0131 ,  G03G15/0189 ,  G03G15/6567

    摘要： An image forming apparatus includes an image forming unit that forms an image on a recording medium; a width detector that detects positions of side edges of the recording medium in a width direction, which is orthogonal to a conveying direction in which the recording medium is conveyed, at multiple detection positions along the conveying direction; a shape calculator that calculates angles between the conveying direction and straight lines each connecting the positions of the same side edge detected at the multiple detection positions and calculates a shape of the recording medium based on the angles; and a correction unit that corrects image data of the image to be formed by the image forming unit based on the calculated shape of the recording medium.

    摘要翻译： 图像形成装置包括在记录介质上形成图像的图像形成单元; 宽度检测器，沿着所述输送方向检测与所述记录介质被输送的传送方向正交的宽度方向上的记录介质的侧边缘的位置; 计算器，其计算输送方向与连接在多个检测位置检测到的同一侧边缘的位置的直线之间的角度，并基于角度计算记录介质的形状; 以及校正单元，其基于计算出的记录介质的形状校正由图像形成单元形成的图像的图像数据。

    Sheet length measuring device and image forming apparatus
    7.
    发明授权
    Sheet length measuring device and image forming apparatus 有权
    片材长度测量装置和成像装置

    公开(公告)号：US08800160B2

    公开(公告)日：2014-08-12

    申请号：US13476359

    申请日：2012-05-21

    申请人： Koichi Kudo ,  Makoto Nakura ,  Naoto Ueda ,  Satoshi Ueda ,  Akira Kobashi ,  Shingo Takai

    发明人： Koichi Kudo ,  Makoto Nakura ,  Naoto Ueda ,  Satoshi Ueda ,  Akira Kobashi ,  Shingo Takai

    IPC分类号： G01B5/04 ,  G01B3/12

    CPC分类号： G01B5/02 ,  G01B5/24 ,  G01B7/02 ,  G01B7/30 ,  G01B21/02 ,  G01B21/22 ,  G03G15/0189 ,  G03G15/5029 ,  G03G2215/00734

    摘要： A sheet length measuring device includes a rotating body configured to rotate with a movement of a sheet in a conveying direction; a position detecting unit configured to detect leading and trailing ends of the sheet passing through a position of the rotating body; a measuring unit configured to measure a rotation amount of the rotating body and output an origin signal per one revolution of the rotating body; a storage unit configured to store changes of a sheet conveying amount with respect to respective rotation angles in one revolution of the rotating body; and a calculating unit configured to calculate a corrected length of the sheet from a value obtained from a rotation angle of the rotating body when the leading end of the sheet is detected and a value obtained from a rotation angle of the rotating body when the trailing end of the sheet is detected.

    摘要翻译： 片材长度测量装置包括旋转体，其构造成随着片材沿输送方向的移动而旋转; 位置检测单元，被配置为检测通过所述旋转体的位置的所述片材的前端和后端; 测量单元，被配置为测量旋转体的旋转量并输出旋转体的每转一次的原点信号; 存储单元，被配置为在旋转体的一圈中存储相对于各旋转角度的片材输送量的变化; 以及计算单元，被配置为从检测到所述纸张的前端的旋转体的旋转角度获得的值和从所述旋转体的后端的旋转角度获得的值来计算所述片材的校正长度 检测到纸张。

    IMAGE FORMING APPARATUS
    10.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20140118762A1

    公开(公告)日：2014-05-01

    申请号：US14059823

    申请日：2013-10-22

    申请人： Makoto NAKURA ,  Naoto Ueda ,  Shingo Takai ,  Satoshi Ueda

    发明人： Makoto NAKURA ,  Naoto Ueda ,  Shingo Takai ,  Satoshi Ueda

    IPC分类号： G06K15/16

    CPC分类号： H04N1/00748 ,  G03G15/5029 ,  G03G2215/00734 ,  G03G2215/0129 ,  G06K15/1868 ,  H04N1/00578 ,  H04N1/00594 ,  H04N1/0071 ,  H04N1/00734 ,  H04N1/00779

    摘要： An image forming apparatus includes an image forming unit to form an image on a recording medium; an inverting transport unit to invert first and second surfaces of the recording medium, and front and rear ends of the recording medium to transport the inverted recording medium; a recording medium width measuring unit to measure an end position of the recording medium in a width direction orthogonal to a transporting direction of the recording medium at a measuring position having an approximately identical distance from one end of the recording medium in the transporting direction before and after the image is formed on the recording medium; and a correcting unit to correct an image to be formed on a subsequent recording medium based on a change in a shape of the recording medium computed based on a measured result from the recording medium width measuring unit.

    摘要翻译： 图像形成装置包括：图像形成单元，用于在记录介质上形成图像; 反转传送单元，用于翻转记录介质的第一和第二表面以及记录介质的前端和后端，以传输倒置的记录介质; 记录介质宽度测量单元，用于测量记录介质在与记录介质的输送方向正交的宽度方向上的测量位置处的测量位置，所述测量位置距离记录介质在输送方向之前的一端具有大致相同的距离; 在图像形成在记录介质上之后; 以及校正单元，用于基于根据来自记录介质宽度测量单元的测量结果计算的记录介质的形状的变化来校正将在随后的记录介质上形成的图像。