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在暗室工作中,为防止暗箱盖未合就打开照明灯而造成暗箱内X光胶片感光的现象,尤其是暗室技术不熟练、工作忙乱时更容易发生。为克服上述现象,我们将暗室照明电路进行改进,即:借助暗箱盖的开关,实现照明电路的断通,从而克服了上述现象的发生。具体方法是:将一压合开关K固定在暗箱的一侧(其位置、高度是当合上暗箱盖时,开关恰能压合为宜),并将其串联在照明线路中,如图所示。
In the dark room work, in order to prevent the blind lid does not open on the light caused by the light inside the X-ray film photosensitive phenomenon, especially darkroom technology unskilled, more prone to work in the hurry. To overcome the above phenomenon, we will improve the darkroom lighting circuit, that is: the use of the lid switch to achieve the lighting circuit off, thus overcoming the above phenomenon. The specific method is: a press switch K is fixed on the side of the black box (its position, the height is closed when the lid closed, the switch just press fit appropriate), and the series in the lighting circuit, as shown Show.