Optical recording media and a method for recording on the optical recording media

In an optical recording method, an edge type recording system is provided on an optical recording medium in which recording and erasing are effected by a phase change between amorphous and crystalline states. Recorded marks are provided by pulse trains each comprising a number of recording power pulses and, additionally, after the last of the recording power pulses, a pulse of from zero power to a power less than an erasing power and of a duration in a range 1.1 to 6 times the duration of the last recording power pulse or of a duration in a range 0.6 to 3 times the duration of a window margin.