| 摘要 |
PURPOSE:To prevent mark and smear which are generated when carrying by eliminating a required protective member of an optical recording medium before recording or reading and then fitting a new protective member after recording or reading. CONSTITUTION:Before recording into an optical recording medium which is covered with a protective member of a heat-shrinkable material, this protective member is cut and eliminated and visible information is optically recorded into the optical recording medium. After this recording, a similar protective member is shrunk due to heat and is fitted. The same applies to recording and reading of a recording medium. Generation of mark and smear can be prevented when carrying, thus achieving an optical recording/reading system with extremely small erroneous recording and reading. |
