| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of a rewritable recording medium having a recording layer exhibiting developing properties upon application of first thermal energy and fading properties upon application of second thermal energy on the supporting face thereof that the erasing time is included in the recording time because recording is performed after erasing the already recorded contents and an extremely long recording time is required, and a problem that the content already recorded on the rewritable recording medium is not constant but diversified and since the erasing time is not constant, the required time can not be made constant when erasure and recording is performed continuously and thereby the time can not be set. SOLUTION: Recording time can be made constant by erasing the records on a plurality of sheets of rewritable recording medium before starting recording. |
