Hisashi Shoda
Hisashi Shoda, Kanagawa JP
Patent application number | Description | Published |
---|---|---|
20100015382 | AZO METAL CHELATE DYE AND OPTICAL RECORDING MEDIUM - The invention provides an azo metal chelate dye suitable for use in a recording layer of an optical recording medium capable of high-speed recording or an optical recording medium having plural recording layers, and an optical recording medium. The azo metal chelate dye comprises an azo dye compound represented by general formula (1) and a metal: | 01-21-2010 |
20100098898 | AZO METAL CHELATE DYE AND OPTICAL RECORDING MEDIUM - The invention provides an azo metal chelate dye suitable for use in a recording layer of an optical recording medium capable of high-speed recording or an optical recording medium having plural recording layers, and an optical recording medium. The azo metal chelate dye comprises an azo dye compound represented by the general formula (1) and Zn | 04-22-2010 |
20100119764 | CYANINE DYE AND OPTICAL RECORDING MEDIUM - To provide an optical recording medium on which recording/retrieving of high density optical information is possible by a short wavelength light such as a blue laser. | 05-13-2010 |
20110069595 | AZO METAL CHELATE DYE AND OPTICAL RECORDING MEDIUM - To provide a dye to be used for an optical recording medium excellent in both high speed recording characteristics and reproduction durability. | 03-24-2011 |
Hisashi Shoda, Tokyo JP
Patent application number | Description | Published |
---|---|---|
20090234122 | CYANINE DYE AND OPTICAL RECORDING MEDIUM - The present invention has an object to widen the range of applicable field of organic compounds to be selected as light absorbing materials in various fields including information recordings, solar energy generations, electric machinery apparatuses, electric communicating apparatuses, optical apparatuses, clothes, building/bedding/decorating products, sanitary and health goods, and agricultural materials, particularly, in the field of optical recording media by providing novel organic materials which absorb short-wavelength visible light, have improved lightfastness and solubility in solvents, and also have heat characteristics depending upon uses to be applied. The object is attained by providing cyanine dyes having a specific structure. | 09-17-2009 |
20090263611 | OPTICAL RECORDING MEDIUM, OPTICAL RECORDING MATERIAL AND METAL COMPLEX COMPOUND - [Problem]: An optical recording medium having a capability of recording and/or reading high density optical information using a short wavelength laser light is provided. | 10-22-2009 |
20090291246 | OPTICAL RECORDING MEDIUM, AZO-TYPE IRON CHELATE COLORING MATTER, AND AZO-TYPE METAL CHELATE COLORING MATTER ADDITIVE - An optical recording medium, which makes information be recorded and read with light having wavelength of 700 nm or shorter, with excellent light resistance, high-speed recording and high-density recording is provided. | 11-26-2009 |
20100173114 | OPTICAL RECORDING MEDIUM AND AZACYANINE DYE - An optical recording medium on which high-density recording and reading of optical information can be conducted by a short-wavelength light such as a blue laser beam is provided. | 07-08-2010 |
Hisashi Shoda, Minato-Ku JP
Patent application number | Description | Published |
---|---|---|
20090246687 | AZO-METAL CHELATE DYE AND OPTICAL RECORDING MEDIUM - The azo-metal chelate dye to which the present invention is applied is a compound formed as follows: for example, 1,3,4-thiadiazole ring is selected as the diazo component; the diazo component is combined with a coupler component having condensed rings including a fluorine-substituted alkylsulfonylamino group and an amino group, to form an azo dye compound; and the azo dye compound forms chelate bonds with at least one metal selected from the group consisting of Co, Ni, Cu and Pd. Here, two absorption bands (OD1 and OD2) are seen in the absorption spectrum, which is measured in a range of 400 to 800 nm wavelengths. The azo-metal chelate dye is characterized in that the optical density ratio (OD2/OD1) of the two absorption bands is greater than 1.25. By using this azo-metal chelate dye, an optical recording medium capable of high-speed recording is provided. | 10-01-2009 |
20110311752 | OPTICAL RECORDING MEDIUM, OPTICAL RECORDING MATERIAL AND METAL COMPLEX COMPOUND - [Problem]: An optical recording medium having a capability of recording and/or reading high density optical information using a short wavelength laser light is provided. | 12-22-2011 |