Method and device for measuring a position of a passing sheet
    1.
    发明授权
    Method and device for measuring a position of a passing sheet 失效
    用于测量通过片材的位置的方法和装置

    公开(公告)号:US06845288B2

    公开(公告)日:2005-01-18

    申请号:US10122614

    申请日:2002-04-15

    摘要: The position of sheets in a printing press is measured. A problem in transporting sheets through the printing press is how to guarantee the correct orientation and lay of the sheets, which must be guaranteed particularly in the printing operation. There is provided a device for precisely determining and correcting the positions of sheets in printing presses. Margin regions of a sheet are respectively imaged, projection data are transmitted to a computing unit, and the position of the sheet is calculated with the aid of the projection data by way of an image recognition algorithm. Furthermore, the computed positions of the sheet are compared to positions which are stored in the computing unit, and from the comparison, position deviations are computed, which are transmitted to the printing press and corrected by way of a sheet registration device.

    摘要翻译: 测量印刷机中纸张的位置。 通过印刷机传送纸张的问题是如何确保纸张的正确定向和铺设,这在印刷操作中必须特别保证。 提供了用于精确地确定和校正印刷机中的片材位置的装置。 分别对片材的边缘区域进行成像,将投影数据发送到计算单元,并且借助于投影数据通过图像识别算法来计算片材的位置。 此外,将计算出的片材的位置与存储在计算单元中的位置进行比较,并且从比较中计算位置偏差,将其发送到印刷机并通过片材登记装置进行校正。

    Method for calibrating a multi-color printing machine
    2.
    发明授权
    Method for calibrating a multi-color printing machine 有权
    校准多色印刷机的方法

    公开(公告)号:US08405879B2

    公开(公告)日:2013-03-26

    申请号:US12675182

    申请日:2008-08-07

    摘要: A method for calibrating a position of a first register line in a register mark for a multi-color printing machine, said first register line consisting of a first color that does not offer sufficient contrast with respect to a printing material to allow detection above a determined threshold on a register sensor. A plurality of register marks, each consisting of at least one starting line, a background line and a first register line, is printed, said background line consisting of a second color which offers sufficient contrast with respect to the first color for detection above the specified threshold on the register sensor if the first register line is printed on the background line, and said background line having a width that is greater than the first register line, and said starting line, said background line and said first register line being printed with the use of the pre-determined control parameters, which normally cause the first register line to be printed on the background line. Subsequently, it is detected whether the first register line has been recognized by the register sensor above the predetermined threshold as being completely positioned on the background line. If not, then at least one predetermined control parameter for printing the first register line is changed and printing of the register marks and the detection are repeated. Changing of the at least one control parameter may be repeated one or more times, with the first register line being shifted each time with respect to its width.

    摘要翻译: 一种用于校准用于多色印刷机的对准标记中的第一寄存器线的位置的方法,所述第一寄存器线由不能提供足够对比度的印刷材料的第一颜色组成,以允许检测高于确定的 寄存器传感器上的阈值。 打印多个对准标记,每个对准标记由至少一个起始行,背景线和第一寄存器行组成,所述背景线由第二种颜色组成,该第二种颜色相对于第一种颜色提供足够的对比度,用于检测高于指定的 如果第一寄存器行被打印在背景线上,并且所述背景线的宽度大于第一寄存器行,并且所述起始行,所述背景线和所述第一寄存器行被印刷在所述寄存器传感器上, 使用预先确定的控制参数,通常会使第一个寄存器行打印在背景线上。 随后,检测到第一寄存器行是否已经被高于预定阈值的寄存器传感器识别为完全位于背景线上。 如果不是,则改变用于打印第一寄存器行的至少一个预定控制参数,并重复对准标记和检测的打印。 至少一个控制参数的改变可以重复一次或多次,其中第一个寄存器行相对于其宽度每次移动。

    METHOD FOR CALIBRATING A PRINTING MACHINE
    3.
    发明申请
    METHOD FOR CALIBRATING A PRINTING MACHINE 失效
    校准打印机的方法

    公开(公告)号:US20110200366A1

    公开(公告)日:2011-08-18

    申请号:US12993105

    申请日:2009-05-06

    IPC分类号: G03G15/01

    摘要: A method for calibrating a printing machine comprising a plurality of printing units includes transporting a first group of at-least-semi-transparent sheets at least once through the printing units. A second group of at-least-semi-transparent sheets is transported at least twice through the printing units, with the sheets being turned over between passages. Registration marks are printed on one of the sheets of the first group of sheets, and on one of the sheets of the second group of sheets during their second passage through the printing units. No registration marks are printed on the sheets of the second group of sheets during their first passage through the printing units. The registration marks are measured at a registration sensor located downstream of the printing units. Calibration parameters are determined using the measurements of the first and second registration marks provided by the registration sensor.

    摘要翻译: 用于校准包括多个印刷单元的印刷机的方法包括将至少半透明片材的第一组至少一次传送通过印刷单元。 第二组至少半透明的片材通过印刷单元至少传送两次,片材在通道之间翻转。 登记标记印刷在第一组片材的片材之一上,并且在其第二组片材的片材之一印刷在其第二次通过印刷装置期间。 在第二组纸张的第一次通过印刷单元期间,没有印刷注册标记。 在位于打印单元下游的配准传感器处测量对准标记。 使用由对位传感器提供的第一和第二对准标记的测量来确定校准参数。

    METHOD FOR CALIBRATING A MULTI-COLOR PRINTING MACHINE
    4.
    发明申请
    METHOD FOR CALIBRATING A MULTI-COLOR PRINTING MACHINE 有权
    用于校准多色打印机的方法

    公开(公告)号:US20110063634A1

    公开(公告)日:2011-03-17

    申请号:US12675182

    申请日:2008-08-07

    IPC分类号: H04N1/60

    摘要: Described is a method for calibrating a position of a first register line in a register mark for a multi-color printing machine, said first register line consisting of a first color that does not offer sufficient contrast with respect to a printing material in order to allow a detection above a determined threshold value on a register sensor. In this method, first a plurality of register marks, each consisting of at least one starting line, a background line and a first register line, is printed, said background line consisting of a second color which offers sufficient contrast with respect to the first color for a detection above the specified threshold value on the register sensor if the first register line is printed on the background line, and said background line having a width that is by X mm greater than the first register line, and said starting line, said background line and said first register line being printed with the use of the pre-determined control parameters, which, in the normal case, cause the first register line to be printed on the background line. Subsequently, it is detected whether the first register line has been recognized by the register sensor above the pre-determined threshold value as being completely positioned on the background line. If this is not the case, then, in accordance with the method, at least one pre-determined control parameter for printing the first register line is changed and printing of the register marks and the detection are repeated. Changing of the at least one control parameter may be repeated one or more times, with the first register line being shifted each time with respect to its width with different algebraic signs. The above method is also particularly suitable as a pre-calibration of the first register line for a calibration pass for all colors of the multi-color printing machine.

    摘要翻译: 描述了一种用于校准多色打印机的对准标记中的第一寄存器线的位置的方法,所述第一寄存器线由对于打印材料不提供足够的对比度的第一颜色组成,以便允许 在寄存器传感器上检测高于确定的阈值。 在该方法中,首先打印多个对准标记,每个对准标记由至少一个起始行,背景线和第一寄存器行组成,所述背景线由对第一颜色提供足够的对比度的第二颜色组成 如果第一寄存器行被打印在背景线上,并且所述背景线的宽度大于第一寄存器行Xmm的宽度,并且所述起始行,所述背景的检测高于寄存器传感器上的指定阈值 并且使用预定的控制参数来打印所述第一寄存器行,在正常情况下,使第一寄存器行被打印在背景线上。 随后,检测到第一寄存器线是否被寄存器传感器识别出高于预定阈值,因为完全位于背景线上。 如果不是这种情况,则根据该方法,改变用于打印第一寄存器行的至少一个预定的控制参数,并重复对准标记和检测的打印。 至少一个控制参数的改变可以重复一次或多次,其中第一个寄存器线每次相对于其具有不同代数符号的宽度而被移位。 上述方法也特别适合作为用于多色印刷机的所有颜色的校准通过的第一记录线的预校准。

    Method for calibrating a printing machine using semi-transparent sheets
    5.
    发明授权
    Method for calibrating a printing machine using semi-transparent sheets 失效
    使用半透明片材校准印刷机的方法

    公开(公告)号:US08532548B2

    公开(公告)日:2013-09-10

    申请号:US12993105

    申请日:2009-05-06

    IPC分类号: G03G15/01 G03G15/00

    摘要: A method for calibrating a printing machine having a plurality of printing units includes transporting a first group of at-least-semi-transparent sheets at least once through the printing units. A second group of at-least-semi-transparent sheets is transported at least twice through the printing units, with the sheets being turned over between passages. Registration marks are printed on one of the sheets of the first group of sheets, and on one of the sheets of the second group of sheets during their second passage through the printing units. No registration marks are printed on the sheets of the second group of sheets during their first passage through the printing units. The registration marks are measured at a registration sensor located downstream of the printing units. Calibration parameters are determined using the measurements of the first and second registration marks provided by the registration sensor.

    摘要翻译: 用于校准具有多个印刷单元的印刷机的方法包括:将至少半透明片材的第一组至少一次传送通过印刷单元。 第二组至少半透明的片材通过印刷单元至少传送两次,片材在通道之间翻转。 登记标记印刷在第一组片材的片材之一上,并且在其第二组片材的片材之一印刷在其第二次通过印刷装置期间。 在第二组纸张的第一次通过印刷单元期间,没有印刷注册标记。 在位于打印单元下游的配准传感器处测量对准标记。 使用由对位传感器提供的第一和第二对准标记的测量来确定校准参数。

    Method for calibrating or recalibrating a conversion factor for determining the distance covered by a print substrate in a printing machine
    6.
    发明授权
    Method for calibrating or recalibrating a conversion factor for determining the distance covered by a print substrate in a printing machine 有权
    用于校准或重新校准用于确定打印机中打印基底所覆盖的距离的转换因子的方法

    公开(公告)号:US06871037B1

    公开(公告)日:2005-03-22

    申请号:US10406747

    申请日:2003-04-03

    IPC分类号: B65H5/02 B65H7/02 G03G15/00

    摘要: A method for the calibration or recalibration of a conversion factor (web encoder resolution), used to determine the distance covered by a print substrate in a printing machine, in particular an electrophotographically operating printing machine, by the cycles of a rotary input type of encoder (web encoder) which sends a signal to the driver of the conveyor belt, preferably the rotation of a rotating drive component for the conveyor belt. This task is solved in that the number of phase pulse signals of the rotary input type of encoder which accumulates during the movement over the dimensions of the longitudinal extension known or otherwise measured section of the conveyer belt, is determined and compared to the known dimensions of the longitudinal extension.

    摘要翻译: 一种用于校正或重新校准转换系数(卷筒纸编码器分辨率)的方法,用于通过旋转输入型编码器的循环来确定印刷机中的打印基板,特别是电子照相操作的印刷机所覆盖的距离 (卷筒纸编码器),其向传送带的驱动器发送信号,优选地为传送带的旋转驱动部件的旋转。 这个任务的解决之处在于,确定了在输送带的纵向延伸部的已知或另外测量的部分的尺寸内在运动期间积累的旋转输入型编码器的相位脉冲信号的数量,并将其与已知尺寸 纵向延伸。

    Method for automatically identifying a type of transparent conveyor belt
    7.
    发明授权
    Method for automatically identifying a type of transparent conveyor belt 有权
    自动识别透明输送带类型的方法

    公开(公告)号:US07812735B2

    公开(公告)日:2010-10-12

    申请号:US11853914

    申请日:2007-09-12

    IPC分类号: G08B21/00 B41J2/385

    CPC分类号: G03G15/167 G03G2215/0141

    摘要: In a method for automatically identifying a conveyor belt in a printer as being one of a plurality of belt types, the conveyor belt is moved along a circulatory path. A start and an end of a longitudinal marking on the moving conveyor belt are detected. A distance of travel of the moving conveyor belt between the detecting of the start and the end is sensed to provide a sensed marking length. The sensed marking length is allocated to a nearest of a plurality of nominal marking lengths. Each nominal marking length is associated with a respective one of said belt types. The belt type is associated with or defined by a set of one or more printer control parameters.

    摘要翻译: 在用于将打印机中的传送带自动识别为多个带类型之一的方法中,传送带沿着循环路径移动。 检测到移动的传送带上的纵向标记的开始和结束。 感测起始和终止的检测之间移动的传送带的移动距离以提供感测的标记长度。 感测到的标记长度被分配到最接近多个标称标记长度。 每个标称标记长度与所述带类型中的相应一个相关联。 皮带类型与一组或多个打印机控制参数相关联或限定。

    Method for detecting errors in individual color separation images of a multi-color printing machine
    9.
    发明授权
    Method for detecting errors in individual color separation images of a multi-color printing machine 有权
    用于检测多色印刷机的各色分离图像中的错误的方法

    公开(公告)号:US08625159B2

    公开(公告)日:2014-01-07

    申请号:US12934736

    申请日:2009-01-22

    摘要: A method for detecting errors in individual color separation images of a multi-color printing machine, in particular an electrophotographic printing machine, comprising a plurality of printing units, is described. Using this method, first a plurality of first register lines is printed with a first printing unit, and a plurality of second register lines is printed with a second printing unit in such a manner that each of the first register lines, together with one of said second register lines, is positioned inside a respective registration frame. Then the plurality of the first and second register lines in the respective registration frame are detected with a register sensor, and an output signal of the register sensor relating to the respective second register line is compared with an intensity threshold value in order to determine whether the second register lines can be recognized. In an alternative embodiment of the method, a plurality of the first register lines is printed with a first printing unit in such a manner that each of the first register lines is printed within a respective registration frame. Subsequently, the plurality of the first register lines in the respective registration frames is detected with a register sensor, and an output signal of the register sensor relating to the respective first register lines is compared with a pre-specified intensity threshold value in order to determine whether the first register lines are recognizable.

    摘要翻译: 描述了一种用于检测包括多个印刷单元的多色印刷机,特别是电子照相印刷机的单独色彩分离图像中的错误的方法。 使用该方法,首先使用第一打印单元打印多个第一寄存器行,并且以第二打印单元打印多个第二寄存器行,使得第一寄存器行与所述第一寄存器行中的一个一起 第二寄存器线位于相应的配准框内。 然后,利用寄存器传感器检测相应登记帧中的多个第一和第二寄存器线,并将与相应的第二寄存器线相关的寄存器传感器的输出信号与强度阈值进行比较,以便确定是否 可以识别第二个寄存器行。 在该方法的替代实施例中,多个第一寄存器行以第一打印单元打印,使得每个第一寄存器行被打印在相应的配准帧内。 随后,用寄存器传感器检测各个登记帧中的多个第一寄存器行,并将与各个第一寄存器行相关的寄存器传感器的输出信号与预定的强度阈值进行比较,以便确定 第一个寄存器行是否可识别。

    METHOD FOR DETECTING ERRORS IN INDIVIDUAL COLOR SEPARATION IMAGES OF A MULTI-COLOR PRINTING MACHINE
    10.
    发明申请
    METHOD FOR DETECTING ERRORS IN INDIVIDUAL COLOR SEPARATION IMAGES OF A MULTI-COLOR PRINTING MACHINE 有权
    用于检测多色打印机个性色彩分离图像中的错误的方法

    公开(公告)号:US20110063643A1

    公开(公告)日:2011-03-17

    申请号:US12934736

    申请日:2009-01-22

    IPC分类号: H04N1/60

    摘要: A method for detecting errors in individual color separation images of a multi-color printing machine, in particular an electrophotographic printing machine, comprising a plurality of printing units, is described. Using this method, first a plurality of first register lines is printed with a first printing unit, and a plurality of second register lines is printed with a second printing unit in such a manner that each of the first register lines, together with one of said second register lines, is positioned inside a respective registration frame. Then the plurality of the first and second register lines in the respective registration frame are detected with a register sensor, and an output signal of the register sensor relating to the respective second register line is compared with an intensity threshold value in order to determine whether the second register lines can be recognized. In an alternative embodiment of the method, a plurality of the first register lines is printed with a first printing unit in such a manner that each of the first register lines is printed within a respective registration frame. Subsequently, the plurality of the first register lines in the respective registration frames is detected with a register sensor, and an output signal of the register sensor relating to the respective first register lines is compared with a pre-specified intensity threshold value in order to determine whether the first register lines are recognizable.

    摘要翻译: 描述了一种用于检测包括多个印刷单元的多色印刷机,特别是电子照相印刷机的单独色彩分离图像中的错误的方法。 使用该方法,首先使用第一打印单元打印多个第一寄存器行,并且以第二打印单元打印多个第二寄存器行,使得第一寄存器行与所述第一寄存器行中的一个一起 第二寄存器线位于相应的配准框内。 然后,利用寄存器传感器检测相应登记帧中的多个第一和第二寄存器线,并将与相应的第二寄存器线相关的寄存器传感器的输出信号与强度阈值进行比较,以便确定是否 可以识别第二个寄存器行。 在该方法的替代实施例中,多个第一寄存器行以第一打印单元打印,使得每个第一寄存器行被打印在相应的配准帧内。 随后,用寄存器传感器检测各个登记帧中的多个第一寄存器行,并将与各个第一寄存器行相关的寄存器传感器的输出信号与预定的强度阈值进行比较,以便确定 第一个寄存器行是否可识别。