An object is to provide a recording and reproducing method of a
dyestuff-based, write-once DVD medium which can obtain a good recording
waveform at a time of carrying out high linear speed recording. To this
end, there are provided a recording and reproducing method and a
recording and reproducing apparatus of a dyestuff-based, write-once DVD
medium in which each mark other than a shortest length mark is recorded
on a recording layer at an optical recording medium formed by having at
least a recording layer containing an organic dyestuff on a substrate
having a guide groove at which a high-frequency wobble is provided, by
using one pulse light at which two places which are a leading portion and
a trailing end portion of a heating pulse are made to be high-output for
a given time and at which a pulse light power of the leading portion of
the heating pulse is greater than a pulse light power of the trailing end
portion, and the recording is reproduced by reproducing light.