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Priority to JP4160172ApriorityCriticalpatent/JPS5231173B2/ja
Publication of JPS494540ApublicationCriticalpatent/JPS494540A/ja
Publication of JPS5231173B2publicationCriticalpatent/JPS5231173B2/ja
Optical system for selectively forming image of shrink pattern on each portion of mirror surface lighttsensitive plastic film and selectively erasing image from these portions for repeated use
Optical system for selectively forming image of shrink pattern on each portion of mirror surface lighttsensitive plastic film and selectively erasing image from these portions for repeated use