感光材料的感光测定大体可分为曝光、显影加工和密度测量三个步骤。显影加工过程中由于搅拌不匀、重复性差以及温度变化等原因,对感光测定的精确度影响较大。为此研制了标准感光测定用显影机。本文对此作如下介绍: 胶片显影时,首先遇到的是乳剂膜膨胀增厚数倍至数十倍。第一个阶段显影剂向膨 Sensitivity of photosensitive material can be roughly divided into exposure, processing and density measurement of three steps. Development of processing due to uneven mixing, poor repeatability and temperature changes and other reasons, the sensitivity of the determination of a greater impact. For this reason developed a standard photometric development of the machine. This article describes the following: film development, the first encounter is the emulsion film swelling thickening several times to several times. In the first stage, the developer is swollen