| Patent application number | Description | Published |
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| 20080304401 | INFORMATION RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCING METHOD - According to one embodiment, an optical information recording medium includes pre-grooves with an irregular shape and lands each of which is sandwiched between the pre-grooves adjacent to each other, where the pre-grooves and lands are defined on an interface between a recording layer and a light reflection layer in a recording film, where the recording film includes a light reflectivity that enables reproduction with light of 650±5 nm, the recording layer includes a recording sensitivity with respect to light by a wavelength shorter than 650±5 nm, and a recording mark can be formed on the pre-groove by using light with a wavelength shorter than 650±5 nm. | 12-11-2008 |
| 20080310280 | INFORMATION RECORDING MEDIUM AND DISK APPARATUS USING THE MEDIUM - According to one embodiment, an information recording medium has a plurality of recording layers, and records and reproduces information by using a semiconductor layer of 450 nm or less. When reproducing information, letting x be the frequency of repetitive recording of a shortest mark length and shortest space length of the information, the ratio of the value of a highest level to the value of a level at x/190 of a sum signal detected within the frequency range of x/3240 to x/190 is lower than 32 dB, or the ratio of the average value of the amplitudes of signals of repetitive recording of the shortest mark length and shortest space length to the value of the highest level within the frequency range of x/3240 to x/190 is higher than 10 dB. | 12-18-2008 |
| 20090022931 | INFORMATION RECORDING MEDIUM - According to one embodiment, an information recording medium including a recording film using an organic recording material recorded by recording light having a wavelength of 405 nm and an organic recording material whose light reflection quantity varies by reproducing light having a wavelength of 650 nm for a recording layer and an optical reflection layer and a land sandwiched between a pre-groove having an irregular shape and an adjoining pre-groove is provided on an interface between the recording layer and the optical reflection layer. | 01-22-2009 |
| 20090086616 | OPTICAL DISK AND METHOD OF MANUFACTURING THE SAME - An optical disk having a recording layer on a substrate, a bonding layer which is made of an ultraviolet cured resin bonding the recording layer, a transparent layer which is bonded to the bonding layer, and an overcoating layer which is formed on the transparent sheet and is made of the ultraviolet cured resin further has a mixed layer which is formed by mixing the ultraviolet cured resins of the bonding layer and the overcoating layer. Consequently, the bonding layer, the overcoating layer, and the mixed layer are integrally cured, so that the substrate is entirely covered with the ultraviolet cured resin having transparency, which allows a light transmitting layer A to be protected with sufficient strength. | 04-02-2009 |
| 20090092035 | INFORMATION RECORDING MEDIUM AND DISK APPARATUS USING THE MEDIUM - According to one embodiment, an information recording medium includes a transparent resin substrate having concentric grooves and concentric lands or a spiral groove and spiral land, and a recording layer formed on the groove and land, and capable of recording and reproducing information by using a semiconductor laser of 450 nm or less. When reproducing recorded information, the information recording medium satisfies the following formula (1) | 04-09-2009 |
| 20090129232 | STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to one embodiment, a write-once type information storage medium using a recording material which has a low to high characteristic that a light reflectivity in a recording mark increases with respect to a non-recording area and which has a recording characteristic in accordance with a principle of recording without substrate deformation, wherein the recording material includes at least an organic metal complex, and wherein the organic metal complex includes a center metal. | 05-21-2009 |
| 20090196159 | WRITE-ONCE INFORMATION RECORDING MEDIUM AND DISK APPARATUS - According to one embodiment, a write-once information recording medium includes a transparent resin substrate having concentric or spiral grooves and lands, and a recording film formed on the grooves and lands of the transparent resin substrate, wherein the recording film includes an organic dye layer containing a metal complex monomer and a metal complex polymer, a recording mark is formed in the organic dye layer by emission of a short-wavelength laser beam, and a light reflectance of the recording mark formed by emission of the short-wavelength laser beam is higher than that before emission of the short-wavelength laser beam, and the grooves wobble within a predetermined amplitude range. | 08-06-2009 |
| 20090324891 | RECORDABLE INFORMATION RECORDING MEDIUM - According to one embodiment, a recordable information recording medium includes an organic dye layer contains an organic dye including a cation portion having monomethinecyanine and an anion portion having an azo metal complex, and a quencher having a formazan metal complex. | 12-31-2009 |
| 20100110868 | OPTICAL RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCING METHOD - According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the first light reflecting layer is smaller than the thickness of the second light reflecting layer. | 05-06-2010 |
| 20100188963 | OPTICAL RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCING METHOD - According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer. | 07-29-2010 |
| 20100189949 | OPTICAL DISK AND METHOD FOR MANUFACTURING THE SAME - A first substrate is formed to include a surface on which a first record layer is formed, and which includes an inner circumferential portion on which a ring-shaped member is provided. Ultraviolet curing resin is dropped onto part of the surface which is located inward of the ring-shaped member, and the first substrate is then spun to coat the first record layer with the ultraviolet curing resin. Furthermore, a second substrate is formed to include a surface on which a second record layer is formed, and the second substrate is spun to coat the second record layer with ultraviolet curing resin. Then, the first and second record layers are made to face each other, and the first and second substrates are bonded to each other by the ultraviolet curing resin. | 07-29-2010 |
| 20100246366 | INFORMATION RECORDING MEDIUM AND DISK APPARATUS USING THE MEDIUM - According to one embodiment, an information recording medium has a plurality of recording layers, and records and reproduces information by using a semiconductor layer of 450 nm or less. When reproducing information, letting x be the frequency of repetitive recording of a shortest mark length and shortest space length of the information, the ratio of the value of a highest level to the value of a level at x/190 of a sum signal detected within the frequency range of x/3240 to x/190 is lower than 32 dB, or the ratio of the average value of the amplitudes of signals of repetitive recording of the shortest mark length and shortest space length to the value of the highest level within the frequency range of x/3240 to x/190 is higher than 10 dB. | 09-30-2010 |
| 20100290327 | STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to one embodiment, a write-once type information storage medium comprises an organic dye based recording material having sensitivity at a wavelength of 405 nm and at a recording wavelength in the range of 600 nm to 700 nm, wherein, when absorbance of a maximum absorption wavelength in the vicinity of 405 nm is defined as 1, the absorbance is 5% or more at any wavelength in the range of 600 nm to 700 nm. | 11-18-2010 |
| 20100302926 | STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to one embodiment, a write-once type information storage medium comprises an organic dye based recording material having sensitivity at a wavelength of 405 nm and at a recording wavelength in the range of 600 nm to 700 nm, wherein, when absorbance of a maximum absorption wavelength in the vicinity of 405 nm is defined as 1, the absorbance is 5% or more at any wavelength in the range of 600 nm to 700 nm. | 12-02-2010 |
| 20100309772 | STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to one embodiment, a write-once type information storage medium comprises an organic dye based recording material having sensitivity at a wavelength of 405 nm and at a recording wavelength in the range of 600 nm to 700 nm, wherein, when absorbance of a maximum absorption wavelength in the vicinity of 405 nm is defined as 1, the absorbance is 5% or more at any wavelength in the range of 600 nm to 700 nm. | 12-09-2010 |
| 20100329099 | STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to an embodiment, a storage medium includes a transparent resin substrate having a concentric or spiral groove and a recording film formed on the groove on the transparent resin substrate, a recording mark being formed by irradiation of a laser beam, wherein a reproduction durability count in a case where reproduction is continuously carried out by a laser beam is 1,000,000 or more. | 12-30-2010 |
| 20110053004 | POSITIVE ELECTRODE - According to one embodiment, a positive electrode includes a positive electrode layer and a positive electrode current collector. The positive electrode layer includes a positive electrode active material including a first oxide represented by the following formula (α) and/or a second oxide represented by the following formula (β). The positive electrode layer has an intensity ratio falling within a range of 0.25 to 0.7. The ratio is represented by the following formula (1) in an X-ray diffraction pattern obtained by using CuKα radiation for a surface of the positive electrode layer. | 03-03-2011 |
| 20110075548 | OPTICAL RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCING METHOD - According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the first light reflecting layer is smaller than the thickness of the second light reflecting layer. | 03-31-2011 |
| 20110085434 | MULTI-LAYER OPTICAL DISC, INFORMATION RECORDING METHOD AND INFORMATION REPRODUCING METHOD - According to one embodiment, single-sided dual-layer recordable disc | 04-14-2011 |
| 20110141872 | STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to one embodiment, a write-once type information storage medium comprises a recording layer which is formed by mixing a plurality of organic dye based recording materials whose molecular weights are different from each other, and wherein a mixture ratio of organic dye based recording materials whose molecular weight is small is larger than a mixture ratio of organic dye based recording materials whose molecular weight is large. | 06-16-2011 |
