The SAKURA ROYAL TOTAL SYSTEM is a new developing system completed by KONISHIROKU PHOTO IND. Co., LTD, By adopting the epoch-making technology of "SELECTIVE DELOPMENT" which has been originally developed by us , we can achieve "high contrast" like Lith development and "rapid processing" , "processing stability" which are the features of Rapid Access development. This epochal system has been already sprea ded and will be main current in the field of photographic developing process, instead of

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... h system, in the near future, In this report, we explain the background of development for "SAKURA ROYAL TOTAL SYSTM" , technical theory of "SELECTIVE DEVELOPMENT", a few opinions concerning Tetrazolium Compounds and the outline of this system.