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    • 57. 发明申请
    • Beam light scanning apparatus, image forming apparatus, and method for controlling generation of beam light
    • 光束扫描装置,图像形成装置以及用于控制光束的产生的方法
    • US20060203263A1
    • 2006-09-14
    • US11239097
    • 2005-09-30
    • Kenichi KomiyaKoji TanimotoDaisuke Ishikawa
    • Kenichi KomiyaKoji TanimotoDaisuke Ishikawa
    • G06K15/12
    • H04N1/1135H04N2201/0471H04N2201/04729H04N2201/04732H04N2201/04744
    • A beam light scanning apparatus capable of reducing influences of variations in characteristics of circuits disposed in a signal path extending until a laser driver and speeding up image data transfer for scan and exposure. Data of each line is distributed by an image data I/F into data trains of two channels, i.e., an odd-numbered pixel train and an even-numbered pixel train. The data in the two-channel trains are written by writing units into a plurality of memories in parallel for each of the trains in response to a line sync signal. During the same processing cycle as that for the writing, the data are read out of the memories in parallel by reading units. The data of two channels are combined by a multiplexer into a data train in the original order of pixels in each line, and a driving signal based on the combined data is generated by a PWM. A laser is driven by the driving signal.
    • 一种能够减少设置在延伸到激光驱动器的信号路径中的电路的特性变化的影响并且加速图像数据传输以用于扫描和曝光的光束扫描装置。 每行的数据由图像数据I / F分配到两个通道的数据串中,即奇数像素列和偶数列列。 响应于行同步信号,双通道列车中的数据由写入单元写入并行的多个存储器中。 在与写入相同的处理周期中,通过读取单元并行地从存储器中读出数据。 通过多路复用器将两个通道的数据以每行中的原始像素顺序组合成数据序列,并且通过PWM产生基于组合数据的驱动信号。 激光由驱动信号驱动。