A write-once optical recording medium having on a substrate a recording layer on which information can be written and/or read out therefrom with a laser beam, where a proper tracking error signals is ensured over the whole substrate of the medium. The medium is adaptable to high information recording density. This medium is produced by forming a recording layer by vacuum depositing on the substrate a recording layer-constituting material containing a metal-containing azo compound having a weight-loss starting temperature or a decomposition temperature ranging from 300 to 500 °C.
一种一次性写入光学记录介质,其基板上有一个记录层,可以用激光束在上面写入和/或读出信息,在介质的整个基板上确保有适当的跟踪误差信号。这种介质可适应高信息记录密度。这种介质是通过在基底上真空沉积含有含
金属偶氮化合物的记录层构成材料来形成记录层的,这种材料的失重起始温度或分解温度在 300 ℃ 至 500 ℃ 之间。