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公开(公告)号：US5175564A
公开(公告)日：1992-12-29
申请号：US733898
申请日：1991-07-22
CPC分类号： H04N1/508 , G03G15/0163
摘要： A color printer includes a recording element which is advanced along a path to receive color-separation images of a desired multicolor image to be printed. Color-separation image recording is effected by a laser scanner which operates asynchronously with respect to the movement of the recording element and functions to periodically scan an intensity-modulated beam of radiation across the moving recording element to record a multitude of equally spaced image lines that collectively define a two-dimensional latent image. In response to a print enable signal, the laser scanner begins scanning the first line of a color-separation image at any time within a line-time interval required to scan each image line. According to a preferred embodiment of the invention, the print enable signal is provided a predetermined fraction of the line-time interval earlier for the second and subsequent color-separation images of a desired multicolor image than it is for the first color-separation image. In this manner the color-separated images are better registered with respect to a nominal position on the recording element.
摘要翻译： 彩色打印机包括沿路径前进的记录元件，以接收要打印的所需多色图像的分色图像。 色分离图像记录由相对于记录元件的运动异步操作的激光扫描器来实现，并且用于周期性地扫描经过移动记录元件的强度调制的辐射束，以记录多个相等间隔的图像行， 共同定义二维潜像。 响应于打印使能信号，激光扫描器在扫描每个图像行所需的行时间间隔内的任何时间开始扫描分色图像的第一行。 根据本发明的优选实施例，打印使能信号提供了对于期望的多色图像的第二次和随后的分色图像比对于第一颜色分离图像更早的行时间间隔的预定分数。 以这种方式，相对于记录元件上的标称位置更好地记录分色图像。
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公开(公告)号：US4994827A
公开(公告)日：1991-02-19
申请号：US533237
申请日：1990-06-04
CPC分类号： G03G15/01 , G06K15/128 , G06K15/129
摘要： A variety of sizes of color prints are made electrophotographically utilizing a single large size receiving sheet, for example, a receiving sheet that is 12.times.18 inches. The large size receiving sheet can be secured to a transfer roller to be cycled through the repeated single color transfers. The receiving sheet is large enough to receive one multicolor image of the largest size or an array of smaller sized multicolor images. The receiving sheet with smaller images is cut to size after transfer.
摘要翻译： 使用单个大尺寸接收片，例如12×18英寸的接收片，电子照相制造各种尺寸的彩色印刷品。 大尺寸接收片材可以固定到转印辊上以循环通过重复的单色转印。 接收片材足够大以接收最大尺寸的一个多色图像或较小尺寸的多色图像阵列。 转印后切片尺寸较小的接收纸张。
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公开(公告)号：US4961089A
公开(公告)日：1990-10-02
申请号：US290718
申请日：1988-12-27
IPC分类号： G03G15/00
CPC分类号： G03G15/755
摘要： Web tracking apparatus and methods are disclosed having particular utility in electrostatographic reproduction apparatus. A web includes a plurality of image frames allowing images to be written thereon and transferred therefrom to a receiver. A guide means moves such web along a path and includes a steering roller mounted for rotation about a caster axis and a gimbal axis. A web tracking system for controlling the guide means to effect lateral alignment of said web is provided such that the deviation of corresponding points of transferred images is minimized. Degradation of image registration due to mid-print corrections is eliminated and steering corrections are made less frequent by the use of adaptive and predictive algorithms. The writing and transfer of images is thereby accomplished in accurate registration and is particularly well-suited for use in forming accurate multicolor reproduction of superimposed images.
摘要翻译： 公开了在静电复原装置中具有特殊用途的网页跟踪装置和方法。 网络包括允许在其上写入图像并从其传送到接收器的多个图像帧。 引导装置沿着路径移动这种腹板，并且包括安装成围绕脚轮轴线和万向节轴线旋转的转向辊。 提供了用于控制引导装置以实现所述幅材的横向对准的网络跟踪系统，使得传送图像的对应点的偏差最小化。 消除由于中间打印校正引起的图像配准的降级，并且通过使用自适应和预测算法使转向校正变得不那么频繁。 因此，图像的写入和转印在精确配准中完成，并且特别适用于形成叠加图像的精确多色再现。
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