METHODS AND DEVICES FOR RECORDING MARKS IN INFORMATION LAYER OF OPTICAL RECORD CARRIER, AND RECORD CARRIERS FOR USE THEREIN

PROBLEM TO BE SOLVED: To provide a method for writing data in an optical record carrier having reduced jitters. SOLUTION: Methods and devices are described for writing in an optical record carrier, in which a mark representing recorded data written in a phase-change layer of a record carrier by a sequence of radiation pulses. A rear heating pulse 24 is introduced after last write pulses 23 and 26, and a front heating pulse 25 is introduced before the first write pulses 22 and 26. The power level 13 of the front heating pulse and the power level 15 of the rear heating pulse may be dependent on the length of the mark to be recorded and on properties of the record carrier. The method results in a reduced jitter of the marks written, especially when writing at high recording speeds. COPYRIGHT: (C)2009,JPO&INPIT