METHOD AND APPARATUS FOR DETECTING SPECKLE

摘要: PROBLEM TO BE SOLVED: To provide a detecting method which enables rapid detection of speckle while eliminating the influence an interfering substance such as sulfurous acid or like interferes with physical developments. SOLUTION: In for speckle, at least silver ions and developing liquid are added to pulp slurry, they kept intact under constant condition period, then blackened occurring therein is detected. Furthermore, in method, slurry previously prepared so that concentration not more than 10 -8 mole/liter. COPYRIGHT: (C)2005,JPO&NCIPI