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    • 1. 发明授权
    • Image forming with synchronized control
    • 图像形成与同步控制
    • US06642949B2
    • 2003-11-04
    • US09427557
    • 1999-10-27
    • Tetsuya NozakiShinobu Arimoto
    • Tetsuya NozakiShinobu Arimoto
    • B41J2435
    • G06K15/1219
    • Forming an image by utilizing a scanning device for scanning a color image for each color element, a reading device for reading image data for each scanned line, a rotary polygon mirror for deflecting, in a main scan direction, a modulated light beam that is based on the image data for each read line, so that an image holding member that is rotated in a sub-scan direction is scanned by the deflected light beam and a latent image is formed thereon, a first generation device for determining whether the light beam deflected by the rotary polygon mirror has scanned a predetermined location, and for generating a main scan start reference signal, and a second generation device for generating a sub-scan start reference signal in synchronization with the rotation of the image holding member, a first control device that controls the rotary polygon mirror and the rotary image holding member, so as to maintain a phase difference between the sub-scan start reference signal and the main scan start reference signal, no matter how many times the rotary image holding member is rotated, a second control device, in synchronization with the sub-scan start reference signal, which starts to drive the scanning device, a third control device, in synchronization with the main scan start reference signal, starts the reading of an original document by the reading device, and a fourth control device, in synchronization with the main scan start reference signal, starts to use the light beam to form a latent image.
    • 通过利用用于扫描每个颜色元素的彩色图像的扫描装置形成图像,用于读取每条扫描线的图像数据的读取装置,用于在主扫描方向上以基于扫描方向偏转的调制光束的旋转多面镜 对于每个读取线的图像数据,使得沿着副扫描方向旋转的图像保持部件被偏转的光束扫描并且在其上形成潜像,第一生成装置用于确定光束是否偏转 通过旋转多面镜扫描预定位置,并且用于产生主扫描开始参考信号,以及用于与图像保持构件的旋转同步地产生副扫描开始参考信号的第二生成装置,第一控制装置 控制旋转多面镜和旋转图像保持部件,以保持副扫描开始基准信号与主扫描开始之间的相位差 参考信号,无论旋转图像保持构件旋转多少次,与开始驱动扫描装置的副扫描开始基准信号同步的第二控制装置与第三控制装置同步地与主扫描装置同步 扫描开始参考信号,通过读取装置开始读取原始文档,并且与主扫描开始参考信号同步的第四控制装置开始使用光束形成潜像。
    • 6. 发明授权
    • Image processing system which forms two-color images
    • 形成双色图像的图像处理系统
    • US06462834B1
    • 2002-10-08
    • US09019194
    • 1998-02-05
    • Masahito YamamotoHideki AdachiYoshiyuki SuzukiKazuhiko HirookaHiroyuki IchikawaTetsuya Nozaki
    • Masahito YamamotoHideki AdachiYoshiyuki SuzukiKazuhiko HirookaHiroyuki IchikawaTetsuya Nozaki
    • G06F1300
    • H04N1/60
    • The color determination circuit 308 detects hue of the color image information, and the controller 205 decides a color component to be separated (separation color) in accordance with the detected hue. Output color by the printer 204 is set in correspondence with the separation color. The two-color-separating circuit 303 separates the color image information into image information on at least two color components in accordance with the decided separation colors. The separated image information on the each color is transmitted to the printer 204 via printer density correction circuits 304 and 305, and a buffer 306. Thereby it is possible to provide an image processing apparatus capable of setting and changing the separation color and the output color by automatic operation or by simple manual operation, thus the expression of the image forming can be improved.
    • 颜色确定电路308检测彩色图像信息的色调,并且控制器205根据检测到的色调来确定要分离的颜色分量(分离颜色)。 打印机204的输出颜色与分离颜色对应地设定。 双色分离电路303根据所确定的分离颜色将彩色图像信息分离成关于至少两个颜色分量的图像信息。 通过打印机密度校正电路304和305以及缓冲器306将关于每种颜色的分离的图像信息发送到打印机204.由此,可以提供能够设置和改变分离颜色和输出颜色的图像处理装置 通过自动操作或通过简单的手动操作,可以提高图像形成的表达。
    • 7. 发明授权
    • Image forming apparatus and controlling method therefor
    • 图像形成装置及其控制方法
    • US06275281B1
    • 2001-08-14
    • US09396781
    • 1999-09-15
    • Tetsuya Nozaki
    • Tetsuya Nozaki
    • G03B2727
    • H04N1/508G03G2215/0158G03G2215/0174
    • The invention intends to match the image writing start positions for different color components, even in case of the rotation speed of the photosensitive member etc. fluctuates by the variation in the load or by the backlash of the driving gears. For attaining this object, the invention is featured by a configuration of detecting and retaining the phase difference between the ITOP signal and the BD signal at a predetermined timing, also detecting the phase difference between the ITOP signal and the BD signal for each formation of the color component image, comparing the phase difference detected at the predetermined timing with that detected for each formation of the color component image, and controlling the timing of starting the image formation by changing, by an image writing tart timing control circuit, the number of BD signal to be counted after the generation of ITOP signal and before the start of image formation.
    • 本发明即使在感光构件的旋转速度等因负载的变化或驱动齿轮的间隙而发生波动的情况下也能够匹配不同颜色成分的图像写入开始位置。为了达到上述目的, 本发明的特征在于在预定定时检测和保持ITOP信号与BD信号之间的相位差的结构,并且还检测每个形成彩色分量图像的ITOP信号和BD信号之间的相位差, 在预定定时检测到的相位差与对于每个颜色分量图像的形成检测到的相位差,并且通过图像写入时刻控制电路改变开始图像形成的定时来控制待计数的BD信号的数量 ITOP信号的生成和图像形成开始之前。