发明授权
US4310234A Supplementary amount of developing solution determining method for a film developer 失效
薄膜显影剂的显影溶液测定方法的补充量

Supplementary amount of developing solution determining method for a
film developer
摘要:
A method for determining a supplementary amount of a developing solution for use in a film developer, wherein values of width signals for controlling a halftone dot generator of a picture reproducing machine are counted up, while a reproduction picture is recorded on a photosensitive film by the halftone dot generator according to picture signals which are obtained by scanning an original picture photoelectrically, and wherein a supplementary amount of the developing solution is determined according to the counted-up total value of the width signals prior to the development of the photosensitive film.
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