| Patent application number | Description | Published |
|---|
| 20090029091 | OPTICAL RECORDING MEDIUM - An optical recording medium having first protective layer, recording layer, second protective layer, and reflective layer, wherein the recording layer contains a phase-change material represented by Formula (1″1), Formula (1-2), or Formula (1-3); the second protective layer contains one selected from zinc oxides, indium oxides, tin oxides, mixtures thereof, and materials Formula (2), and materials Formula (3). Formula (1″1): In | 01-29-2009 |
| 20090116344 | INFORMATION RECORDING METHOD, INFORMATION RECORDING MEDIUM, AND INFORMATION RECORDING APPARATUS - An information recording method recording information on an information recording medium in the form of a recording mark having a time-length nT by irradiating optical beam pulses thereto according to a recording strategy, the recording strategy comprises the steps of forming the recording mark on the recording medium by controlling a power of the optical beam pulses to one of ternary values Pw, Pb and Pe (Pw>Pe>Pb) and irradiating a heating pulse having a power set to Pw, and a cooling pulse having a power set to Pb, upon the information recording medium alternately; and forming a space on the recording medium subsequent to the recording mark by irradiating the optical beam pulse with the power Pe, the recording strategy increasing the number of said heating pulses by one each time the time-length of the recording mark is increased by 2T, the recording strategy setting a heat pulse starting time sTtop and a heat pulse termination time eTtop for a first heating pulse, when forming a recording mark of a time-length of at least 2T, individually at least in the case of forming a space-length of 2T and the case in which there is formed a space-length of 3T or more, before or after the currently formed recording mark. | 05-07-2009 |
| 20090116365 | Optical Recording Medium and Optical Recording Method - An optical recording method to record information with a mark length recording method, where an amorphous mark and a crystal space are recorded only in the groove of a substrate having a guide groove, with the temporal length of the mark and the space of nT (T denotes a reference clock period; n denotes a natural number). The space is formed at least by an erase pulse of power P | 05-07-2009 |
| 20090155514 | MULTILAYER OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING METHOD - A multilayer optical recording medium including at least multiple information layers having at least a phase change recording layer capable of recording information by laser irradiation and a reflection layer, wherein information layer as seen from a side of the laser irradiation has at least a lower protection layer, the phase change recording layer, an upper protection layer, the reflection layer and an optical transmission layer, the upper protection layer and the optical transmission layer in each information layer other than the innermost one are composed of an Sn oxide-containing material and a thickness of the upper protection layer in each information layer other than the innermost one as seen from the side of the laser irradiation is 2 nm to 15 nm is provided. | 06-18-2009 |
| 20100221480 | OPTICAL RECORDING MEDIUM - To provide an optical recording medium in which error-causing short marks are produced in numbers small enough excellent high-recording characteristics and in which amorphous marks are uniform in shape. The optical recording medium includes: a first protective layer; a recording layer containing Sb as a main ingredient; a second protective layer; and a reflective layer, the first protective layer, the recording layer, the second protective layer and the reflective layer being provided in the order in which light passes through the medium for recording and reproduction of information, wherein the first protective layer and/or the second protective layer, both of which are in contact with the recording layer, are/is formed of a crystalline oxide. | 09-02-2010 |
