发明授权
US5223857A Pulsed imaging, pulse width modulation raster output scanner for tri-level exposure 失效
脉冲成像,脉冲宽度调制雷达输出扫描仪,用于三级曝光

Pulsed imaging, pulse width modulation raster output scanner for
tri-level exposure
摘要:
A pulsed imaging Raster Output Scanner utilizes pulse width modulation in conjunction with spatial filtering to form three exposure levels at the surface of a recording medium, one of the levels associated with a specific color.
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