OPTICAL INFORMATION RECORD DEVICE AND METHOD AND MEDIA

• Main Authors: SEKIGUCHI MITSUO, KAKIMOTO HIROYA, MIYAZAWA FUYUKI, OYAMA KATSUHIRO
• Format: Patent
• Language: English
• Published: 19.06.2008
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

An optical information recording device, an optical information recording method, and an optical information recording medium are provided to control celadon laser power through a recording power control unit, using a writing power, a space formation power, a read power, and a bias power in order to secure appropriate recording features even when recording is disturbed. An optical information recording device forms record marks and spaces by irradiating laser light, wavelength of which falls within a range including 405 nm, to an optical information recording medium for which an organic dye exhibiting a predetermined absorption factor with respect to light having the wavelength of 405 nm is used, and thus records information. The optical information recording device includes a recording power control unit that controls the power of the laser light for recording of information using a writing power(Pw) required for forming record marks, a space formation power(Ps) required for forming spaces and lower than the writing power, a read power(Pr) required for reproducing information recorded in the optical information recording medium, and a bias power(Pb) higher than the read power.