Systems and methods for medium registration
    2.
    发明公开
    Systems and methods for medium registration 有权
    媒体注册的系统和方法

    公开(公告)号:EP1791029A3

    公开(公告)日:2007-06-13

    申请号:EP06119795.0

    申请日:2006-08-30

    申请人: Xerox Corporation

    IPC分类号: G03G15/00 B65H9/10

    摘要: Embodiments according to the present disclosure provide methods and systems of determining nip velocity profiles in a medium registration system (20), including parameterizing a set of equations into a set of standard parameters, the set of equations representing an analytic form of the nip velocity profiles (VA,VB); determining values of the parameters through an iteration process; and determining the nip velocity profiles based on the determined values of the parameters. The embodiments separately provide systems and methods of simulating a medium registration process, including inputting an error parameter (β) to a velocity nominal profile of a nip in a medium registration system; determining an output value of the velocity nominal profile; and using the output value in a regression algorithm to obtain a simulated relationship, the simulated relationship indicative of a manner in which the error parameter influences the output value. The embodiments separately provide systems and methods of determining an angular velocity of a medium (10) relative to a nip in a medium registration system, including determining a path of the nip on the medium; and determining the angular velocity as a function of a position of the nip in the path. The embodiments separately provide systems and methods of controlling nips (NA,NB) of a medium registration system, including wagging a medium relative to a center line of two nips of the medium registration system; and then unwagging the medium relative to the center line of the two nips.

    Stitching and color registration control for multi-scan printing
    3.
    发明公开
    Stitching and color registration control for multi-scan printing 有权
    Druckzeilen- und FarbausrichtungskontrollefürVielfachlaufdruck

    公开(公告)号:EP1226954A2

    公开(公告)日:2002-07-31

    申请号:EP02000971.8

    申请日:2002-01-16

    申请人: Xerox Corporation

    IPC分类号: B41J11/46

    CPC分类号: B41J11/46

    摘要: An apparatus and method are provided for the use of an optical sensor to determine the position of a printing device relative to a piece of paper or a paper-handling surface. The optical sensor reads marks to detect movement and/or direction of movement or spacing of imprints on the paper. Benefits include swath stitching calibration, color to color registration, producing printing device alignment data and generating information for printing device firing signals. The present invention is applicable to a wide field of printing technologies, including, but not limited to, acoustic ink printing, thermal ink jet printing, piezo ink jet printing, ionographic printing and a variety of other printing technologies involving the need for positioning a printing device relative to a piece of paper.

    摘要翻译: 提供了一种用于使用光学传感器来确定打印装置相对于一张纸或纸张处理表面的位置的装置和方法。 光学传感器读取标记以检测纸张上的移动和/或移动方向或印记间距。 优点包括条纹拼接校准,颜色到颜色配准,产生打印设备对准数据和生成打印设备点火信号的信息。 本发明可应用于广泛的印刷技术领域,包括但不限于声学油墨印刷,热喷墨印刷,压电喷墨印刷,离子印刷以及涉及需要定位印刷的各种其它印刷技术 装置相对于一张纸。

    Image forming device with driving systems to prevent misregistration
    4.
    发明公开
    Image forming device with driving systems to prevent misregistration 失效
    Bilderzeugungsgerätmit Antriebssystemen zum Vermeiden von Lageabweichungen。

    公开(公告)号:EP0575141A1

    公开(公告)日:1993-12-22

    申请号:EP93304639.3

    申请日:1993-06-15

    申请人: XEROX CORPORATION

    IPC分类号: G03G15/01 H04N1/46

    摘要: In an image forming device, the inherent eccentricities of the photosensitive belts or drums and the timing belt speed reduction drive trains cause misregistration of the developed latent images. To prevent such misregistration, the timing belt (48) of the speed reduction drive train (42) has a peripheral length which is selected from a range of values dependent on a preselected speed reduction ratio n between the driven pulley (46) and the driving pulley (44). Further, each one of the range of values is an integral improper fraction or integral multiple of the circumference of the driven pulley. Moreover, the driving pulley (50) of the last pulley belt set coupled to the photosensitive member (40) and a driven pulley (46) prior to the last pulley belt set rotate n full rotations as the photosensitive member rotates from the image forming location to the image transfer location. In conjunction, every speed reduction ratio of all pulley belt sets prior to the last pulley belt set is an integer value. Thus, the eccentricities will be self-compensated.

    摘要翻译: 在图像形成装置中,感光带或鼓的固有偏心和同步带减速驱动系引起显影的潜像的不对准。 为了防止这种配准失调,减速传动系42的同步皮带48具有从根据从动皮带轮(46)与驾驶员之间的预选减速比n的值的范围中选择的周长 滑轮(44)。 此外,值的范围中的每一个是从动带轮的圆周的整体不适当分数或整数倍。 而且,当感光体从图像形成位置旋转时,在最后一个皮带轮组之前,耦合到感光构件(40)的最后一个皮带轮组的驱动滑轮(50)和从动皮带轮(46)旋转, 到图像传输位置。 总之,在最后一个皮带轮组之前的所有皮带轮组的每个减速比都是整数值。 因此,偏心率将被自我补偿。

    Apparatus for colorimetry, gloss and registration feedback in a color printing machine
    7.
    发明公开
    Apparatus for colorimetry, gloss and registration feedback in a color printing machine 失效
    Vorrichtung zur Kolorimetrie,Glanz undAusrichtungsrückkopplungin einer Farbdruckanlage

    公开(公告)号:EP0772345A2

    公开(公告)日:1997-05-07

    申请号:EP96307860.5

    申请日:1996-10-30

    申请人: XEROX CORPORATION

    IPC分类号: H04N1/50

    CPC分类号: H04N1/506 G03G2215/0174

    摘要: A method and apparatus for measuring colorimetric, gloss and registration data on a substrate exiting a printing machine is described. A detector using a series of red, green, and blue filters (130,132,134) collects image data and maps the collected data to absolute color coordinates. The apparatus is factory calibrated to the specific colorants used in the printing machine. Gloss measurements are made using the same apparatus. Registration data between the various color separations is also obtained using detectors (140,142,144,146) and feedback delivered to the various imaging modules. The apparatus allows on the fly data to be obtained and machine specific corrections to be made.

    摘要翻译: 描述了在离开印刷机的基板上测量比色,光泽和配准数据的方法和装置。 使用一系列红色,绿色和蓝色滤光片(130,132,134)的检测器收集图像数据并将收集的数据映射到绝对颜色坐标。 该设备在印刷机上用于特定着色剂的工厂校准。 使用相同的装置进行光泽度测量。 使用检测器(140,142,144,146)和传送到各种成像模块的反馈也可以获得各种分色之间的记录数据。 该装置允许获得飞行数据并进行机器特定的校正。

    Method and apparatus for antirotation encoder interfaces
    8.
    发明公开
    Method and apparatus for antirotation encoder interfaces 失效
    用于防止编码器接口的方法和装置

    公开(公告)号:EP0570180A3

    公开(公告)日:1993-12-29

    申请号:EP93303595.8

    申请日:1993-05-10

    申请人: XEROX CORPORATION

    IPC分类号: G03G15/01 F16D3/04 F16D3/00

    摘要: An encoder interface for interfacing an encoder having a first part (104) defining a first axis to a structure having a second part (106) defining a second axis substantially parallel to the first axis includes a portion for translating the first part (104) with respect to the second part (106) in a direction transverse to the first axis and a portion for rigidly rotationally stabilizing the first part (104) with respect to the second part (106) against a rotation of the first part (104) about the first axis induced by a translation of the first part (104) with respect to the second part (106) in the direction transverse to the first axis. A method for interfacing an encoder having a first part (104) defining a first axis with a structure having a second part (106) defining a second axis substantially parallel to the first axis includes the steps of translating the first part (104) with respect to the second part (106) in a direction transverse to the first axis and rigidly rotationally stabilizing the first part (104) with respect to the second part (106) against a rotation of the first part (104) about the first axis induced by a translation of the first part (104) with respect to the second part (106) in the direction transverse to the first axis.

    Sheet transport apparatus
    9.
    发明公开
    Sheet transport apparatus 失效
    Blattfördergerät。

    公开(公告)号:EP0493022A2

    公开(公告)日:1992-07-01

    申请号:EP91311872.5

    申请日:1991-12-20

    申请人: XEROX CORPORATION

    IPC分类号: G03G15/00 G03G15/16

    摘要: An apparatus (48) which advances a sheet (25) through a transfer zone (64) and into registration with information developed on a moving member (20). The sheet (25) is advanced to a position wherein a leading portion thereof is within the transfer zone (64) and a trailing portion thereof is immediately behind the transfer zone (64) relative to the forward direction of movement of the moving member (20). The leading portion of the sheet (25) is advanced through the transfer zone (64) at a first velocity and the trailing portion of the sheet (25) is advanced in a region immediately behind the transfer zone (64) at a second velocity, which is greater than the first velocity, so as to create a buckle (19) in the trailing portion of the sheet (25) in the region. The buckle (19) functions to eliminate relative velocity between the photoconductive belt (20) and any portion of sheet (25) within the transfer zone (64) so as to substantially eliminate slip between the sheet (25) and the photoconductive belt (20).

    摘要翻译: 一种使片材(25)穿过转移区域(64)前进并与移动构件(20)上形成的信息对准的装置(48)。 片材(25)前进到其前端部分处于转移区域(64)内的位置,并且其后部部分相对于移动构件(20)的向前移动方向紧邻转移区域(64)的后方 )。 片材(25)的引导部分以第一速度前进通过转移区域(64),并且片材(25)的后部在第二速度下紧邻转印区域(64)的后方的区域中前进, 其大于第一速度,从而在该区域中的片材(25)的后部中形成带扣(19)。 所述带扣(19)用于消除所述光电导带(20)与所述转印区域(64)内的片材(25)的任何部分之间的相对速度,从而基本上消除所述片材(25)和所述光导带(20)之间的滑动 )。

    Sheet transport apparatus
    10.
    发明公开
    Sheet transport apparatus 失效
    Blatttransportgerät。

    公开(公告)号:EP0493021A2

    公开(公告)日:1992-07-01

    申请号:EP91311871.7

    申请日:1991-12-20

    申请人: XEROX CORPORATION

    IPC分类号: G03G15/16 G03G15/00

    摘要: An apparatus (48) which advances a sheet (25) hrough a transfer zone (64) and into registration with information developed on a moving member (20). The sheet (25) is advanced to a position wherein a leading portion thereof is immediately ahead of the transfer zone (64) relative to the forward direction of movement of the moving member (20) and a trailing portion thereof is within the transfer zone (64). The trailing portion of the sheet (25) is advanced through the transfer zone (64) at a first velocity and the leading edge of the sheet (25) is advanced in a region immediately ahead of the transfer zone (64) at a second velocity, which is less than the first velocity, so as to create a buckle (27) in the leading portion of the sheet (25) positioned immediately ahead of the transfer zone (64) relative to the forward direction of movement of the moving member (20). The buckle (27) functions to eliminate relative velocity between the photoconductive belt (26) and any portion of sheet (25) within the transfer zone (64) so as to substantially eliminate slip between the sheet (25) and the photoconductive belt (20).

    摘要翻译: 一种使片材(25)穿过转移区域(64)前进并与移动构件(20)上形成的信息对准的装置(48)。 纸张(25)前进到相对于移动部件(20)的向前移动方向,其前端紧靠转印区域(64)的前方的位置,并且其后端部位于转印区域内 64)。 片材(25)的尾部以第一速度前进通过转移区域(64),并且片材(25)的前缘在紧邻转移区域(64)之前的区域中以第二速度前进 ,其小于所述第一速度,以便在所述片材(25)的引导部分中相对于所述移动构件的向前移动方向(在所述转移区域(64)的前方)上方形成带扣(27) 20)。 带扣(27)用于消除感光带(26)与转印区域(64)内的片材(25)的任何部分之间的相对速度,以便基本上消除片材(25)和感光带(20)之间的滑动 )。