Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric CorpfiledCriticalMitsubishi Electric Corp
Priority to TW085113922ApriorityCriticalpatent/TW340941B/zh
Application grantedgrantedCritical
Publication of TW340941BpublicationCriticalpatent/TW340941B/zh
Optical information recording medium; optical information recording/reproducing apparatus using the medium, and master disk exposure apparatus for producing the same
A method for recording track marking information on flexible magnetical information carrier discs and apparatus for fine adjustment of the position of a reading head