公开(公告)号：US6006047A

公开(公告)日：1999-12-21

申请号：US974448

申请日：1997-11-20

申请人： Robert M. Mara ,  Barbara A. Sampath ,  Lai C. Lam ,  Patrick O. Waller ,  Joseph A. Mastrandrea

发明人： Robert M. Mara ,  Barbara A. Sampath ,  Lai C. Lam ,  Patrick O. Waller ,  Joseph A. Mastrandrea

IPC分类号： G03G15/02 ,  G03G15/00 ,  G03G15/01 ,  G03G15/04 ,  G03G15/043

CPC分类号： G03G15/5037 ,  G03G2215/00054

摘要： An apparatus for monitoring and controlling electrical parameter of an imaging surface, the monitoring controlling apparatus including a patch generator for recording a first control patch at a first voltage level and a second control patch at a second voltage level on the imaging surface; electrostatic voltmeter for measuring voltage potentials associated with the first control patch and second control patch. A processor, in communication with the patch generator, calculates the electrical parameters of the imaging surface from the measured voltage potentials from the first and second control patches. The processor determines a deviation between the calculated electrical parameters values and setup values. Then, the processor produces and sends a feedback error signal to the patch generator if the deviation exceed a threshold level. The patch generator records a third control patch at a third voltage level on the imaging surface upon reception of the error signal. The ESV senses the third control patch. The processor calculates the electrical parameters of the imaging surface from the measured voltage potential of the third control patch and determines a correction factor. The charging device, exposure system and developer are adjusted in accordance to the correction factor.

摘要翻译： 一种用于监测和控制成像表面的电参数的装置，所述监测控制装置包括用于在所述成像表面上以第二电压电平记录第一电压电平的第一控制贴片和第二控制贴片的贴片发生器; 用于测量与第一控制贴片和第二控制贴片相关联的电压电位的静电电压表。 与贴片发生器通信的处理器根据来自第一和第二控制贴片的测量电压电位计算成像表面的电参数。 处理器确定计算的电气参数值和设定值之间的偏差。 然后，如果偏差超过阈值水平，则处理器产生并发送反馈误差信号给补丁发生器。 贴片发生器在接收到误差信号时，在成像表面上记录第三电压电平的第三控制电平。 ESV感觉到第三个控制补丁。 处理器根据测量的第三控制补丁的电压电位计算成像表面的电气参数，并确定校正因子。 充电装置，曝光系统和显影剂根据校正因子进行调整。

公开(公告)号：US06204869B1

公开(公告)日：2001-03-20

申请号：US09216901

申请日：1998-12-21

申请人： Cathleen J. Raker ,  Sue K. Lam-Chon ,  Patrick O. Waller ,  Daniel R. Maurer ,  Joseph W. Ward ,  Rosario A. Bracco ,  Ronald E. Shaul ,  Robert M. Mara ,  Raymond L. Mongeon ,  Joseph A. Mastrandrea ,  Patricia A. Papaleo ,  Colleen Tremaine

发明人： Cathleen J. Raker ,  Sue K. Lam-Chon ,  Patrick O. Waller ,  Daniel R. Maurer ,  Joseph W. Ward ,  Rosario A. Bracco ,  Ronald E. Shaul ,  Robert M. Mara ,  Raymond L. Mongeon ,  Joseph A. Mastrandrea ,  Patricia A. Papaleo ,  Colleen Tremaine

IPC分类号： G03G1500

CPC分类号： G03G15/5041 ,  G03G2215/00042 ,  G03G2215/00054

摘要： There is provided a method for use with a printing machine having a movable imaging member and a projecting system for modulating a beam and projecting an image into the movable imaging member. The printing machine further includes a developer for application of developer material to the image projected onto the movable imaging member for transfer of the image to a print media sheet. The method, which is intended for use in controlling exposure of a test patch on the movable imaging member includes the steps of: a) providing a time-keeping device with the time-keeping device including a variable value which is either incrementable or decrementable; b) detecting a signal indicating that the movable imaging member is positioned relative to the beam in a selected orientation, wherein the movable imaging member passes by the beam at a selected speed; c) providing a reference value with the reference value varying as a function of the selected speed; d) in response to the detecting of (b), modulating the beam, relative to the movable imaging member, so as to expose a portion for the test patch; e) concurrent with the modulating of (d), incrementing or decrementing the variable value of the time keeping device; and f) repeating said modulating of (d) until the value of the variable value is about equal to the reference value and the test patch is exposed.

摘要翻译： 提供了一种用于具有可移动成像构件和用于调制光束并将图像投影到可移动成像构件中的投影系统的印刷机的方法。 印刷机还包括用于将显影剂材料施加到投影到可移动成像构件上的图像以将图像转印到打印介质片材上的显影剂。 该方法旨在用于控制可移动成像构件上的测试贴片的曝光，包括以下步骤：a）向计时装置提供包括可递增或可减量的可变值的计时装置; b）检测指示所述可移动成像构件以选定取向相对于所述光束定位的信号，其中所述可移动成像构件以选定的速度通过所述光束; c）提供参考值，所述参考值作为所选择的速度的函数而变化; d）响应于（b）的检测，相对于可移动成像构件调制光束，以暴露测试贴片的一部分; e）与（d）的调制同时进行，递增或递减计时装置的可变值; 和f）重复所述（d）的调制，直到可变值的值大约等于参考值，并且测试贴片暴露。