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    Technique for precise color-to-color registration in thermal printers
    83.
    发明授权
    Technique for precise color-to-color registration in thermal printers 失效
    一种用于准确的颜色叠加在感热式打印机还原法

    公开(公告)号：EP0538859B1

    公开(公告)日：1997-06-25

    申请号：EP92118096.4

    申请日：1992-10-22

    Applicant: EASTMAN KODAK COMPANY

    Inventor： Mackin, Thomas Andrew, c/o Eastman Kodak Company ,  Guy, William Fred, c/o Eastman Kodak Company ,  Auer, Scott Lanning, c/o Eastman Kodak Company

    IPC: H04N1/04 ,  H04N1/46 ,  G06K15/12

    CPC classification number: H04N1/0671 ,  G06K15/028 ,  H04N1/047 ,  H04N1/06 ,  H04N1/508 ,  H04N2201/02416 ,  H04N2201/02425 ,  H04N2201/02439 ,  H04N2201/03108 ,  H04N2201/03158 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04725 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04739 ,  H04N2201/04755 ,  H04N2201/04756 ,  H04N2201/04767 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04794

    Abstract: There is disclosed a method for providing precise color-to-color registration of color dots in a multicolor proof with a thermal printer comprising a CPU and Printer Controller, a Motion Controller, a writing drum, and a writing head coupled to a translation means. Using the disclosed method, a proof and a dye donor member with a predetermined dye color thereon are mounted on the writing drum. The writing head is then moved to a predetermined start position defined by a sensor at a predetermined position along the translation means which has its optical path blocked by the writing head. The writing head is then moved forward to a predetermined home position which is defined by a next subsequent pulse from a multi-pulse radial position-indicating encoder coupled to the translation means occurring after the writing head leaves the start position. In sequence, the writing drum and then the translation means are accelerated with a separate predetermined substantially constant acceleration until a separate predetermined velocity is obtained. After the predetermined velocity of the translation means is obtained, the printing of color dots on the proof is started upon the receipt of a next subsequent pulse from a multi-pulse radial position-indicating encoder coupled to the writing drum. 1. A method of printing color dots on a multicolor proof with a thermal printer comprising a rotatable writing drum and a writing head which is coupled to a translation means comprising the steps of: (a) activating the translation means for moving the writing head to a predetermined fixed start position; (b) moving the writing head in a forward direction to a home position defined by the detection of a next subsequent pulse from a first radial position encoder coupled to the translation means after the writing head has reached the predetermined fixed start position in step (a), and simultaneously therewith stopping the movement of the translation means and the writing head, where the first radial positional encoder produces a predetermined plurality of pulses per revolution of the translation means; (c) accelerating the writing drum with a substantially constant acceleration to a predetermined velocity in response to the receipt of the next subsequent pulse from the first radial position encoder in step (b); (d) accelerating the translation means with a predetermined substantially constant acceleration to a predetermined velocity in response to the writing drum reaching the predetermined velocity in step (c); (e) selectively energizing a predetermined number of thermal elements in the writing head for starting the printing of color dots of a dye color onto a receiver member mounted on the writing drum in response to the writing drum reaching a predetermined radial position after the translation means has reached the predetermined velocity; and (f) repeating steps (a) through (e) for each other dye color needed to print the multicolor proof.

    Image forming apparatus
    85.
    发明公开
    Image forming apparatus 失效
    成像设备

    公开(公告)号：EP0616266A2

    公开(公告)日：1994-09-21

    申请号：EP94104011.5

    申请日：1994-03-15

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Takahashi, Masaki ,  Kurihara, Teruo ,  Komiyama, Nakaba ,  Mikami, Manabu, Toshiba Shimonoge Ryo

    IPC: G03G15/01 ,  G03G15/00

    CPC classification number: G03G15/326 ,  G03G15/0194 ,  G03G15/0435 ,  G03G2215/0008 ,  G03G2215/0119 ,  H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/193 ,  H04N1/506 ,  H04N2201/02416 ,  H04N2201/02439 ,  H04N2201/02443 ,  H04N2201/03158 ,  H04N2201/0471 ,  H04N2201/04725 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04737 ,  H04N2201/04755 ,  H04N2201/04767 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04793 ,  H04N2201/04794 ,  H04N2201/04798

    Abstract: The image forming apparatus can retain a stable and high image quality for many hours without use of any high precise mechanical parts and without causing any non-uniformity and mal-registration in color image. In the image forming apparatus, an image recording medium (photosensitive drum) (6a) is driven by a rotative driving mechanism (pulleys and belts); and an image recording section (print bar) (6c) records an image repeatedly on the rotating image recording medium (6a) in a direction perpendicular to a rotational direction of the image recording medium. The image recorded on the image recording medium (6a) is transcribed onto an image transcribing medium (paper) (22) being fed in the rotational direction of the image recording medium (6a) to form an image. In particular, the apparatus comprises a rotation detecting section (rotary encoder) (6r) for detecting angular travel rates of the image recording medium (6a); and a recording timing control section (5) for controlling recording timing (HSYNC) at which the image is started to be recorded in the direction perpendicular to the rotational direction of the image recording medium (6a), on the basis of the angular travel rates detected by the rotation detecting section (6r).

    Abstract translation: 成像设备可以在不使用任何高精度机械部件的情况下保持稳定和高图像质量很长时间，并且不会引起彩色图像中的任何不均匀性和不良配准。 在图像形成设备中，图像记录介质（感光鼓）（6a）由旋转驱动机构（皮带轮和皮带）驱动; 并且图像记录部分（打印条）（6c）在垂直于图像记录介质的旋转方向的方向上在旋转图像记录介质（6a）上重复记录图像。 记录在图像记录介质（6a）上的图像被转录到在图像记录介质（6a）的旋转方向上被馈送的图像转录介质（纸张）（22）上以形成图像。 具体地说，该设备包括用于检测图像记录介质（6a）的角行程速率的旋转检测部分（旋转编码器）（6r）; 以及记录定时控制部分（5），用于基于角行程速率（δ）控制在垂直于图像记录介质（6a）的旋转方向的方向上开始记录图像的记录定时（HSYNC） 由旋转检测部分（6r）检测。

    Method and apparatus for recognizing meandering in printed matter test system and method and apparatus for correcting image pickup position in this system
    87.
    发明公开
    Method and apparatus for recognizing meandering in printed matter test system and method and apparatus for correcting image pickup position in this system 失效
    用于识别印刷品测试系统中的曲折的方法和设备以及用于在该系统中校正图像拾取位置的方法和设备

    公开(公告)号：EP0584637A3

    公开(公告)日：1994-03-16

    申请号：EP93112795.5

    申请日：1993-08-10

    Applicant: Komori Corporation

    Inventor： Tanaka, Kimihiro, c/o Toride Plant ,  Kojima, Shinichi, c/o Toride Plant ,  Okuda, Tetsuya, c/o Toride Plant

    IPC: H04N1/00

    CPC classification number: H04N1/047 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/02416 ,  H04N2201/02439 ,  H04N2201/03158 ,  H04N2201/04705 ,  H04N2201/0471 ,  H04N2201/04718 ,  H04N2201/04727 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04734 ,  H04N2201/04755 ,  H04N2201/04767 ,  H04N2201/04789 ,  H04N2201/04794

    Abstract: In a method of recognizing meandering of a web, with respect to the reference image data, one side 1A of a rectangular meandering recognition block Φ is set parallel to a printing traveling direction Y at a position where mA1 pixels of an output P(A) are located on one side of the one side 1A and mA2 pixels of the output P(A) are located on the other side thereof, and an opposite side 1B of the one side 1A of the meandering recognition block Φ is set parallel to the direction Y at a position where mB1 pixels of an output P(B) are located on one side of the opposite side 1B and mB2 pixels are located on the other side of the opposite side 1B. With respect to the test image data, a meandering recognition block Φ D having the same shape as that of the block Φ is set at a position corresponding to the block Φ set with respect to the reference image data. A difference ΔP(Φ) between a sum P(Φ) of output data of all pixels included in the block Φ and a sum P(Φ D ) of output data of all pixels included in the block Φ D is calculated. A difference ΔP(Φ n ) between a product of the output P(B) and a pixel count n of the block Φ in the direction Y and a product of the output P(A) and the pixel count n is calculated. A meandering amount and direction of the web are obtained on the basis of the absolute value and the sign of a quotient obtained by dividing the difference ΔP(Φ) by the difference ΔP(Φ n ).

    Abstract translation: 在识别卷筒纸的曲折的方法中，对于参考图像数据，在输出P（A）的mA1个像素的位置处，将矩形曲折识别块Φ的一侧1A设置为平行于印刷行进方向Y， 位于一侧1A的一侧，并且输出P（A）的mA2像素位于另一侧，并且曲折识别块Φ的一侧1A的相对侧1B被设置为平行于方向 Y在输出P（B）的mB1个像素位于相对侧1B的一侧的位置处，并且mB2个像素位于相对侧1B的另一侧。 对于测试图像数据，具有与块Φ相同形状的曲折识别块ΦD被设置在与针对参考图像数据设置的块Φ对应的位置处。 计算包括在块Φ中的所有像素的输出数据的总和P（Φ）与包括在块ΦD中的所有像素的输出数据的总和P（ΦD）之间的差ΔP（Φ）。 计算输出P（B）的乘积与方向Y上的块Φ的像素计数n之间的差ΔP（Φn）以及输出P（A）与像素数n的乘积之差。 根据差值ΔP（Φ）除以差值ΔP（Φn）得到的商的绝对值和符号来获得卷曲的蜿蜒量和方向。

    Technique for precise color-to-color registration in thermal printers
    88.
    发明公开
    Technique for precise color-to-color registration in thermal printers 失效
    Verfahren zur genauenFarbenübereinandersetzungbei thermischen Druckern。

    公开(公告)号：EP0538859A1

    公开(公告)日：1993-04-28

    申请号：EP92118096.4

    申请日：1992-10-22

    Applicant: EASTMAN KODAK COMPANY

    Inventor： Mackin, Thomas Andrew, c/o Eastman Kodak Company ,  Guy, William Fred, c/o Eastman Kodak Company ,  Auer, Scott Lanning, c/o Eastman Kodak Company

    IPC: H04N1/04 ,  H04N1/46 ,  G06K15/12

    CPC classification number: H04N1/0671 ,  G06K15/028 ,  H04N1/047 ,  H04N1/06 ,  H04N1/508 ,  H04N2201/02416 ,  H04N2201/02425 ,  H04N2201/02439 ,  H04N2201/03108 ,  H04N2201/03158 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04725 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04739 ,  H04N2201/04755 ,  H04N2201/04756 ,  H04N2201/04767 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04794

    Abstract: There is disclosed a method for providing precise color-to-color registration of color dots in a multicolor proof with a thermal printer comprising a CPU and Printer Controller, a Motion Controller, a writing drum, and a writing head coupled to a translation means. Using the disclosed method, a proof and a dye donor member with a predetermined dye color thereon are mounted on the writing drum. The writing head is then moved to a predetermined start position defined by a sensor at a predetermined position along the translation means which has its optical path blocked by the writing head. The writing head is then moved forward to a predetermined home position which is defined by a next subsequent pulse from a multi-pulse radial position-indicating encoder coupled to the translation means occurring after the writing head leaves the start position. In sequence, the writing drum and then the translation means are accelerated with a separate predetermined substantially constant acceleration until a separate predetermined velocity is obtained. After the predetermined velocity of the translation means is obtained, the printing of color dots on the proof is started upon the receipt of a next subsequent pulse from a multi-pulse radial position-indicating encoder coupled to the writing drum.

    1. A method of printing color dots on a multicolor proof with a thermal printer comprising a rotatable writing drum and a writing head which is coupled to a translation means comprising the steps of:

    (a) activating the translation means for moving the writing head to a predetermined fixed start position;
    (b) moving the writing head in a forward direction to a home position defined by the detection of a next subsequent pulse from a first radial position encoder coupled to the translation means after the writing head has reached the predetermined fixed start position in step (a), and simultaneously therewith stopping the movement of the translation means and the writing head, where the first radial positional encoder produces a predetermined plurality of pulses per revolution of the translation means;
    (c) accelerating the writing drum with a substantially constant acceleration to a predetermined velocity in response to the receipt of the next subsequent pulse from the first radial position encoder in step (b);
    (d) accelerating the translation means with a predetermined substantially constant acceleration to a predetermined velocity in response to the writing drum reaching the predetermined velocity in step (c);
    (e) selectively energizing a predetermined number of thermal elements in the writing head for starting the printing of color dots of a dye color onto a receiver member mounted on the writing drum in response to the writing drum reaching a predetermined radial position after the translation means has reached the predetermined velocity; and
    (f) repeating steps (a) through (e) for each other dye color needed to print the multicolor proof.

    Abstract translation: 公开了一种使用包括CPU和打印机控制器，运动控制器，书写鼓和耦合到翻译装置的书写头的热敏打印机在多色证明中提供彩色点的精确颜色到颜色配准的方法。 使用所公开的方法，将具有预定染料颜色的证明和染料供体构件安装在书写鼓上。 然后将书写头移动到沿着平移装置的预定位置由传感器限定的预定起始位置，该平移装置的光路被写入头阻挡。 然后，写入头向前移动到预定的起始位置，该预定的起始位置由写入头离开开始位置之后出现的与连接到平移装置的多脉冲径向位置指示编码器的下一个后续脉冲限定。 顺序地，书写鼓和平移装置以单独的预定的基本恒定的加速度加速，直到获得单独的预定速度。 在获得翻译装置的预定速度之后，在从耦合到书写鼓的多脉冲径向位置指示编码器接收到下一个后续脉冲时，开始证明上的彩色点的打印。 1.一种使用热敏打印机在多色证明上印刷彩色点的方法，所述热敏打印机包括可旋转书写鼓和耦合到翻译装置的书写头，包括以下步骤：（a）激活所述翻译装置以将书写头移动到 预定的固定起始位置; （b）在步骤（a）中写入头已经到达预定的固定起始位置之后，将写入头沿向前方向移动到由耦合到平移装置的第一径向位置编码器检测下一个后续脉冲所限定的初始位置 ），并且同时停止翻译装置和书写头的移动，其中第一径向位置编码器每转产生预定的多个脉冲; （c）响应于在步骤（b）中从所述第一径向位置编码器接收到下一个后续脉冲，加速所述书写鼓以基本恒定的加速度到预定速度; （d）响应于所述书写鼓在步骤（c）中达到预定速度，以预定的基本上恒定的加速度将所述平移装置加速到预定速度; （e）选择性地激励写入头中的预定数量的热元件，用于响应于书写鼓在翻译装置之后达到预定的径向位置，开始将染色的彩色点打印到安装在书写滚筒上的接收器构件上 已达到预定速度; 和（f）对于打印多色证明所需的每种其它染料颜色重复步骤（a）至（e）。

    Image scanning system for a computer
    89.
    发明公开
    Image scanning system for a computer 失效
    计算机图像扫描系统

    公开(公告)号：EP0202070A3

    公开(公告)日：1988-08-31

    申请号：EP86303451

    申请日：1986-05-07

    Applicant: EPR BUREAU LIMITED

    Inventor： Reynolds, Anthony

    IPC: G06K11/00 ,  H04N01/04

    CPC classification number: B82Y15/00 ,  G06F3/005 ,  H04N1/047 ,  H04N1/1911 ,  H04N2201/02425 ,  H04N2201/02439 ,  H04N2201/03158 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04734 ,  H04N2201/04767 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04794 ,  Y02T10/82

    Abstract: The present invention provides a scanning system, producing and storing a digital representation of an image, comprising:
    a support, for the image to be scanned, and a carriage which are movable relative to one another in a longitudinal direction; a probe, movable on the carriage in a direction transverse to said longitudinal direction, for producing a digital signal related to the density of the image; a digital computer for producing digital control signals for controlling the relative movement of the support and the carriage and the movement of the probe on the carriage so that the probe can be scanned over the image; and pulse generating means for generating a synchronisation pulse when the probe has moved a predetermined distance in the transverse direction for enabling digital image signals produced by the probe at each position during its scanning to be transmitted to the digital computer, the digital computer being arranged to receive the digital image signals produced by the probe and the pulse from the generating means, and to correlate the pulse, the digital image signals and the digital control signals to produce a digital representation of the image for storage in the computer.

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