| 摘要 |
PURPOSE:To reduce error rate in reproduction by making constant the width of a mark train regardless of the information pattern even when a heat mode recording is effected by a simple recording system. CONSTITUTION:A recordable region is formed on a recording film through heating at a predetermined temperature. The recordable region is a stripe region elongated in the recording direction with the width thereof being confined within a local heating region. This structure allows to form a mark train having a constant width, as shown in fig (a), regardless of the information pattern. A stripe region of constant width is formed at the time of erasing the information and the stripe region is missed partially depending on the information at the time of recording. Since stripe marks are left as shown in fig. (b) after recording, a mark train having constant width can be obtained. |
