Information recording apparatus and information recording method

摘要

The information recording apparatus (1) irradiates a laser beam on a recording medium (D) such as an optical disk and forms a recording mark corresponding to a recording mark corresponding to a recording signal to record information. A recording pulse signal includes a mark period irradiating the laser beam for forming the recording mark and a space period in which the recording mark is not formed. The mark period has a top pulse period and an intermediate bias period following the top pulse period. The laser power during the top pulse is higher than during the intermediate bias period, so that thermal interference is avoided. The starting and ending position of the write pulse is adjusted according to the length of the space period after the mark, so that optical intersymbol interference is avoided.