To analyze and maintain common trouble of 3m 969 lasers camera 969型激光相机常见故障分析及处理
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This paper introduces the operational principle and structure of laser camera . the adjustment of image gray - scale and density is also mentioned 摘要介绍影像设备中常用的激光相机（激光打印机）的结构和工作原理以及激光相机图像灰阶和密度的调节方法。
