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发明授权
US5115257A Multi-tone laser beam writing apparatus for image forming equipment 失效
用于图像形成设备的多色激光束写入装置

Multi-tone laser beam writing apparatus for image forming equipment
摘要：
A multi-tone laser beam writing apparatus renders a multi-tone image accurately by a single dot and with a simple construction. The apparatus prevents dot densities from concentrating so as to render halftone evenly.
摘要（中）：

多色激光束写入装置通过单点和简单的结构精确地呈现多色调图像。 该装置可以防止点浓度的集中，使得半色调均匀。

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