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本文用威纳(Wiener)频谱分析法,提出了一个印片过程中颗粒性线性传递理论,同时还列出了这一理论对于光学与接触两种印片工艺应用的结果。在X-射线屏的曝光中,颗粒形成的情况也相仿,本文还阐明了边种测定技术对不同屏幕效应的评价。在一台测微光度计上,检测加工后的胶片时,透射光的光强随样片上乳剂的颗粒性而波动。样片密度场的不均一性即可表征颗粒性,使测微光度计的光电管相应地产生一个随时间变化的电压信号。本文仅就这种颗粒性信号予以分析。
In this paper, a Wiener spectrum analysis method is proposed for a particle transfer theory in the process of printing, and the results of applying this theory to the two printing processes of optics and contact are also listed. In the X-ray screen exposure, the particle formation is also the case of similar, this article also clarified the side species measurement techniques for different screen effects. On a micrometre, the light intensity of the transmitted light fluctuates with the granularity of the emulsion on the sample when the processed film is examined. The heterogeneity of the sample density field can characterize the granularity, so that the phototube of the micrometre generates a voltage signal that changes with time accordingly. This article analyzes only this granular signal.