Method for Producing Data Storage Medium

A method for producing a data storage medium having the step of:

• recording a disc information on the data storage medium,
• wherein the data storage medium on which data is to be recorded by modulating the data to generate a plurality of recording modulation codes and irradiating a pulse-like light beam to the data storage medium, so that a plurality of recording mark and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the data storage medium,
• the disc information includes at least one of an irradiation information of the light beam to form the recording marks and a constitution information of the recording mark is to be recorded,
• at least two of the plurality of recording marks are formed by the light beam emitted according to a recording pulse train, the recording pulse train comprising:
• a first pulse which is disposed at a front and forms a leading edge of the recording mark, a last pulse which is disposed at a backend and forms a trailing edge of the recording mark, and a multi-pulse train which is disposed between the first pulse and the last pulse and forms a center of the recording mark,
• the recording pulse train includes a multi-pulse area in which the multi-pulse train disposed, a position of at least one pulse of the recording pulse train in the multi-pulse area is set so that a multi-pulse duty is set at a predetermined value, the multi-pulse duty being obtained by dividing a pulse width of the multi-pulse train by a period of the multi-pulse train, and
• the multi-pulse train has a pulse period which is twice as long as a reference period T of the recording modulation code.