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    • 7. 发明授权
    • Angle measuring method and angle measuring system
    • 角度测量方法和角度测量系统
    • US09134145B2
    • 2015-09-15
    • US13856061
    • 2013-04-03
    • Toru Shimizu
    • Toru Shimizu
    • G01B11/02G01D5/26G01D5/244
    • G01D5/266G01D5/24485G01D5/30
    • An angle measuring system including: a rotary encoder including an encoder main body and a rotating shaft which is freely rotatable with respect to the encoder main body, the rotary encoder which detects a relative rotation angle of the rotating shaft with respect to the encoder main body; a regulation member which regulates an absolute rotation angle of the encoder main body about the rotating shaft within a fixed range; an absolute angle detecting device which detects the absolute rotation angle of the encoder main body about the rotating shaft concurrently with detection of the relative rotation angle by the rotary encoder; and a correction device which corrects the rotation angle detected by the rotary encoder based on the rotation angle detected by the absolute angle detecting device.
    • 一种角度测量系统,包括:旋转编码器,包括编码器主体和相对于编码器主体可自由旋转的旋转轴;旋转编码器,其检测旋转轴相对于编码器主体的相对旋转角度 ; 调节构件,其将编码器主体围绕旋转轴的绝对旋转角度调节在固定范围内; 绝对角度检测装置,通过旋转编码器检测相对旋转角度同时检测编码器主体围绕旋转轴的绝对旋转角度; 以及校正装置,其基于由绝对角度检测装置检测到的旋转角度来校正由旋转编码器检测到的旋转角度。
    • 9. 发明授权
    • Image recording method and image recording apparatus
    • 图像记录方法和图像记录装置
    • US08136914B2
    • 2012-03-20
    • US12414091
    • 2009-03-30
    • Yoshiaki InoueToru Shimizu
    • Yoshiaki InoueToru Shimizu
    • B41J29/393
    • B41J29/393B41J2/175B41J2/185B41J2/2146B41J29/38
    • An image recording method comprises the steps of: acquiring first recording characteristic information of recording elements of a recording head by reading a first test pattern formed with ejecting ink droplet from the recording elements; obtaining first density unevenness correction information based on the first recording characteristic information; acquiring second recording characteristic information of the recording element by reading a second test pattern different from the first test pattern formed with ejecting ink droplet from the recording elements; obtaining second density unevenness correction information based on the second recording characteristic information; correcting image data based on the first and second density unevenness correction information to calculate density unevenness-corrected image data; and calculating an ejection pattern of the recording element based on the unevenness-corrected image data.
    • 一种图像记录方法包括以下步骤:通过读取从记录元件喷射墨滴形成的第一测试图案来获取记录头的记录元件的第一记录特性信息; 基于所述第一记录特性信息获得第一密度不均匀性校正信息; 通过读取与从记录元件喷射墨滴形成的第一测试图案不同的第二测试图案来获取记录元件的第二记录特性信息; 基于第二记录特性信息获得第二密度不均匀性校正信息; 基于第一和第二浓度不均匀性校正信息校正图像数据,以计算密度不均匀校正图像数据; 以及基于所述不均匀校正图像数据计算所述记录元件的喷射图案。
    • 10. 发明授权
    • Inkjet recording apparatus, test image forming method, and computer-readable medium
    • 喷墨记录装置,测试图像形成方法和计算机可读介质
    • US08042905B2
    • 2011-10-25
    • US12414139
    • 2009-03-30
    • Hirofumi SaitaToru Shimizu
    • Hirofumi SaitaToru Shimizu
    • B41J29/393B41J29/38B41J2/155
    • B41J2/1721B41J2/145B41J2/175B41J2/185B41J2/2146B41J29/38
    • An inkjet recording apparatus has: a head having a plurality of nozzles which eject an ink onto a recording medium; a conveyance device which conveys the recording medium; a droplet ejection control device which controls ink ejection of the head; a test image forming device that forms a test image on the recording medium by causing the ink to be ejected from every n (where n is a natural number equal to 2 or higher) nozzles in an X direction perpendicular to a direction in which the recording medium is conveyed, and causing the ink to be ejected so as to form vertical lines forming n columns which shift by one nozzle in the X direction and each extend continuously in terms of a Y direction parallel to the direction in which the recording medium is conveyed; and a reading device which is provided on a conveyance path of the recording medium, reads in a test image on the recording medium and has an image reading structure covering a length corresponding to full width of the recording medium in a breadthways direction which is perpendicular to the direction in which the recording medium is conveyed, wherein in the test image, an arrangement pitch in the X direction of the vertical lines is equal to or exceeding a reading pitch in the X direction of the reading device, an arrangement pitch in the Y direction of the vertical lines is N times a reading pitch in the Y direction of the reading device (where N is a natural number), and an interval corresponding to variation in a conveyance of the recording medium is provided between the vertical lines in such a manner that a length in the Y direction of each of the vertical lines is less than the reading pitch in the Y direction of the reading device.
    • 喷墨记录装置具有:头部,其具有将墨水喷射到记录介质上的多个喷嘴; 输送记录介质的输送装置; 液滴喷射控制装置,其控制喷墨头的喷墨; 一种测试图像形成装置,其通过使墨水从垂直于记录方向的X方向从每个n(其中n为自然数等于2或更高的数量)喷射到记录介质上,形成测试图像; 介质被输送,并且使油墨喷射以形成形成n列的垂直线,该n列在X方向上移动一个喷嘴,并且每个在与记录介质被输送的方向平行的Y方向上连续延伸 ; 以及读取装置,其设置在记录介质的输送路径上,读取记录介质上的测试图像,并且具有覆盖与记录介质的全宽相对应的长度的图像读取结构,该图像读取结构沿垂直于 记录介质被传送的方向,其中在测试图像中,垂直线的X方向上的排列间距等于或超过读取装置的X方向上的读取间距,Y中的排列间距 垂直线的方向是读取装置的Y方向的读取间距的N倍(其中N是自然数),并且在这样的垂直线之间的垂直线之间设置与记录介质的输送的变化相对应的间隔 每个垂直线的Y方向上的长度小于读取装置的Y方向上的读取间距的方式。