Patent ID: 7116623

Claim:
An optical information recording device, wherein a mark or a space having a length corresponding to a length of a data recording code is formed by irradiating a rotating optical information recording medium with laser light to change optical characteristics of a photosensitive recording layer, and the mark is formed by irradiating the rotating optical information recording medium with the laser light with a power being switched among a plurality of power levels including at least a recording power level and an erase power level, the device comprising: a linear velocity setting portion for setting a first linear velocity v 1 and a second linear velocity v 2 that is higher than the first linear velocity v 1 for the rotating optical information recording medium; a recording pulse generation portion for generating a recording pulse signal composed of a recording pulse and/or a recording pulse train, depending on a result of setting by the linear velocity setting portion; and a laser drive portion for irradiating the optical information recording medium with the laser light based on the recording pulse signal generated by the recording pulse generation portion, wherein the laser drive portion controls a power level of the laser light in such a manner that Pbt 1 ≦Pe 1 and Pe 2 <Pbt 2 <Pwa 2 is satisfied, where Pbt 1 represents a first inter-pulse power level indicating a power level between recording pulses in the recording pulse train for the first linear velocity v 1 , Pbt 2 represents a second inter-pulse power level indicating a power level between the recording pulses in the recording pulse train for the second linear velocity v 2 , Pwa 2 represents a recording power level indicating a power level of the recording power for the second linear velocity v 2 , Pe 1 represents a first erase power level indicating a power level of the erase power for the first linear velocity v 1 , and Pe 2 represents a second erase power level indicating a power level of the erase power for the second linear velocity v 2 .