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    • 1. 发明授权
    • Modulator control for automatically overcoming intensity variations in a
laser scanner
    • 用于自动克服激光扫描仪强度变化的调制器控制
    • US4746987A
    • 1988-05-24
    • US865321
    • 1986-05-21
    • James C. TrainoLeon C. WilliamsKwok-leung YipJ. Terrence Flynn
    • James C. TrainoLeon C. WilliamsKwok-leung YipJ. Terrence Flynn
    • G02F1/11G06K15/12H04N1/113H04N1/40H04H1/04
    • H04N1/40043G06K15/1214H04N1/40037H04N1/4005
    • A scanner with high intensity source beam, a modulator for modulating the source beam to provide a zero order beam and first order writing beam in response to an image signal input, a polygon for scanning the writing beam across a moving recording member to write images thereon, a sensor in the path of the zero order beam providing a first black beam intensity signal while scanning between pages and a second white beam intensity signal while the writing beam scans an image background area, a circuit for differencing the first and second beam intensity signals from one another to provide a composite intensity signal representing the intensity of the source beam, and a second circuit for differencing the composite beam intensity signal from an intensity setpoint signal to provide a correction signal for adjusting the rf power to the modulator to maintain a substantially constant writing beam intensity.In a second embodiment, the correction signal is determined by a successive approximation register.
    • 一种具有高强度源光束的扫描器,用于调制源光束以响应于图像信号输入提供零级光束和一阶写入光束的调制器,用于扫描写入光束跨越移动记录部件以在其上写入图像的多边形 在零光束的路径中的传感器在写入光束扫描图像背景区域时在扫描页面和第二白光束强度信号之间提供第一黑光束强度信号,用于差分第一和第二光束强度信号的电路 提供表示源光束的强度的复合强度信号,以及用于将合成光束强度信号与强度设定点信号进行差分的第二电路,以提供校正信号,用于调整调制器的功率以维持基本上 恒定写入光束强度。 在第二实施例中,校正信号由逐次逼近寄存器确定。
    • 3. 发明授权
    • Fast scan jitter measuring system for raster scanners
    • 光栅扫描仪快速扫描抖动测量系统
    • US4620237A
    • 1986-10-28
    • US663634
    • 1984-10-22
    • James C. TrainoDouglas L. Keene
    • James C. TrainoDouglas L. Keene
    • H04N1/053H04N1/113H04N1/12H04N1/23H04N1/36H04N1/29G02B26/08
    • H04N1/00018H04N1/00031H04N1/00045H04N1/00053H04N1/00058H04N1/00063H04N1/053H04N1/1135H04N1/12H04N2201/0471
    • A system for detecting and measuring fast scan jitter having first and second photosensors combined in a unitary detector positionable in the path of a scanning beam; means for generating a packet of test pixels for modulating the scanning beam for jitter through a succession of scan lines; said first and second photosensors outputting signal pulses representing the intensity of said scanning beam following modulation by said test pixels; a differential integrator for integrating the signal pulse outputs of said first and second photosensors with one another to provide a test signal for each line scanned; a filter for smoothing said test signal, an amplifier for amplifying said test signal, a peak to peak detector for comparing the test signal of one scan line with the test signal from the succeeding scan lines to provide a jitter signal where said test signals are different; and a meter for converting said jitter signal to a visual readout.
    • 一种用于检测和测量具有第一和第二光电传感器的快速扫描抖动的系统,其组合在可位于扫描光束的路径中的单一检测器中; 用于产生用于通过一连串扫描线调制用于抖动的所述扫描光束的测试像素的分组的装置; 所述第一和第二光电传感器输出表示由所述测试像素调制后的所述扫描光束的强度的信号脉冲; 差分积分器,用于将所述第一和第二光电传感器的信号脉冲输出彼此集成,以便为扫描的每行提供测试信号; 用于平滑所述测试信号的滤波器,用于放大所述测试信号的放大器,峰到峰检测器,用于将一条扫描线的测试信号与来自后续扫描线的测试信号进行比较,以提供抖动信号,其中所述测试信号不同 ; 以及用于将所述抖动信号转换为视觉读出的仪表。
    • 5. 发明授权
    • Image size control for raster scanners
    • 光栅扫描仪的图像尺寸控制
    • US4349847A
    • 1982-09-14
    • US229811
    • 1981-01-30
    • James C. Traino
    • James C. Traino
    • G02B26/10H04N1/04H04N1/047H04N1/113H04N1/12
    • H04N1/047H04N1/1135H04N1/12H04N2201/04729H04N2201/04731H04N2201/04789H04N2201/04791
    • A raster output scanner having a movable imaging member and high intensity imaging beam for exposing the imaging member to create images thereon. A rotating polygon scans the beam across the imaging member in line by line fashion while a modulator astride the beam path modulates the beam in accordance with image signals or pixels input thereto. A clock provides clock pulses for clocking the image pixels to the modulator.To assure uniform image size despite variations in the velocity of the imaging member, a control signal representative of imaging member velocity is used to control polygon velocity and maintain a predetermined velocity relationship between imaging member and polygon. Means are provided to servo clock frequency with polygon rotation, with a control to shift the clock servo midpoint frequency in response to changes in imaging member velocity.
    • 一种具有可移动成像构件和高强度成像光束的光栅输出扫描仪,用于曝光成像构件以在其上产生图像。 旋转的多边形以一行一行的方式扫描成像构件上的束,而跨越光束路径的调制器根据输入到其上的图像信号或像素来调制光束。 时钟提供用于将图像像素计时到调制器的时钟脉冲。 为了确保成像构件的速度变化的均匀图像尺寸,使用代表成像构件速度的控制信号来控制多边形速度并保持成像构件和多边形之间的预定速度关系。 提供了具有多边形旋转的伺服时钟频率的装置,具有响应于成像构件速度的变化而移动时钟伺服中点频率的控制。
    • 7. 发明授权
    • Intensity control for raster output scanners
    • 栅格输出扫描仪的强度控制
    • US4400740A
    • 1983-08-23
    • US295438
    • 1981-08-24
    • James C. TrainoFelice A. MiccoDouglas L. Keene
    • James C. TrainoFelice A. MiccoDouglas L. Keene
    • H04N1/40H04N1/30
    • H04N1/4005H04N1/40037
    • A control for modulating the scanning beam of a raster output scanner in response to both video image signal levels and beam intensity signal levels through a single port modulator driver with linear balanced amplifier. A control circuit combines the video image signals with an analog beam intensity signal to provide a composite image/intensity control signal which is input to the modulator port to regulate scanning beam intensity. The image intensity signals are derived from a memory previously loaded with data reflecting image beam intensity variations across the scan line, the memory output being updated by a signal representing current beam intensity prior to use by the control circuit.
    • 用于通过具有线性平衡放大器的单端口调制器驱动器响应于视频图像信号电平和光束强度信号电平来调制光栅输出扫描器的扫描光束的控制。 控制电路将视频图像信号与模拟光束强度信号组合,以提供输入到调制器端口以调节扫描光束强度的合成图像/强度控制信号。 图像强度信号从预先加载有反映扫描线上的图像束强度变化的数据的存储器导出,存储器输出由表示当前光束强度的信号在由控制电路使用之前更新。
    • 9. 发明授权
    • Apparatus for automatic control of an intermediate image storage device
in an electrostatographic processing machine
    • 用于自动控制静电图像处理机中的中间图像存储装置的装置
    • US4080058A
    • 1978-03-21
    • US591799
    • 1975-06-30
    • Joseph F. StephanyJames C. Traino
    • Joseph F. StephanyJames C. Traino
    • G02F1/135G03B27/32G03G15/00G03G15/04G03G15/22H04N1/23H04N1/29
    • G02F1/135G03G15/04009G03G15/22H04N1/23H04N1/29
    • Apparatus for automatic control of an image storage device. The image storage device, of the type employing a liquid crystal, is utilized in an intermediate processing step during electrostatographic reproduction of the image. An automatic sequence of voltages and illuminations are applied to the image storage device for erasing previously stored images and for preparing the device for storage of an image. The stored image can be applied to a photoreceptor element of an electrostatographic machine for reproduction of the image. The liquid crystal image storage device can be utilized in conjunction with apparatus for displaying signal encoded data. The display of the signal encoded data can be in a format inconvenient for direct application to the photoreceptor, the image storage device serving as a buffer memory for the image. The stored image can be utilized in conjunction with the electrostatographic machine to provide single or multiple copies of the image.
    • 一种图像存储装置的自动控制装置。 使用液晶的图像存储装置在图像的静电复制期间用于中间处理步骤。 将电压和照明的自动序列应用于图像存储装置,用于擦除先前存储的图像并准备用于存储图像的装置。 存储的图像可以应用于静电图像机的感光体元件,用于再现图像。 液晶图像存储装置可以与用于显示信号编码数据的装置结合使用。 信号编码数据的显示可以是不方便直接应用于感光体的格式,图像存储装置用作图像的缓冲存储器。 存储的图像可以与静电照相机一起使用以提供图像的单个或多个副本。