摘要:
The optical recording material of the invention is an optical recording material used for an optical recording medium capable of recording information by irradiation of light, the optical recording medium being an optical recording medium which records information at a linear speed of at least 14 m/sec, wherein the dye component in the optical recording material comprises at least one type of chelate compound of an azo compound and a metal, and when the dye component is used as a sample for thermogravimetry in an inert gas atmosphere, the dye component sample exhibits a maximum weight reduction of 0.2-3.0%/° C. at 180-250° C.
摘要:
An optical recording medium capable of recording information by irradiation of light is provided with a substrate on which there is formed a recording layer which contains an organic dye comprising an organic dye matrix, and at least one C7 or greater branched organic group bonded by a single bond to the organic dye matrix and branching at a prescribed position into a C5 or greater organic group and a functional group other than a hydrogen atom, and/or at least two C5 or greater organic groups. This adequately prevents gas generation due to thermal decomposition of the organic dye, and the accompanying pressure fluctuation, even with the increasing temperature produced by irradiation with a high power laser, so that it becomes possible to form precise recording pits while achieving a high level of sensitivity and high speed responsiveness even under high-temperature conditions.
摘要:
An optical recording material used in an optical recording medium which can record information by light irradiation, this optical recording material containing a dye compound obtained by salt formation between a chelate compound formed by coordination between one metal and one or two compounds represented by the following general formula (1): where A and B are groups of atoms which may be identical or different, and which respectively form aromatic rings, and X1 and X2 are respectively functional groups having one or more active hydrogen atoms which may contain a substituent group, and a cation represented by the following general formula (2): where C is a group of atoms forming a benzene ring or naphthalene ring which may have a substituent group, R1 and R2 are respectively five-membered rings or six-membered rings which may have a substituent group, Y1 is a substituent group, Q3 is a nitrogen-containing heterocyclic ring which may have a condensed ring, p and q are respectively integers from 1 to 4, and n is an integer from 0 to 3.
摘要:
An object of the invention is to provide a method for preparing an optical recording medium, featuring a high production yield, a reduced loss and a high utilization of dye solution, and ensuring to produce media of consistent quality even by continuous coating as well as an optical recording medium. The object is achieved by a method for preparing an optical recording medium, comprising the step of applying a solution of a dye in a solvent onto a resin substrate to form a dye film, wherein the solvent of the dye solution is a mixture of tetrafluoropropanol and/or octafluoropentanol with an aliphatic saturated alcohol of 1 to 4 carbon atoms, and a recording layer is formed by applying the dye solution.
摘要:
A phthalocyanine dye of specific structure represented by the following general formula (1) or (2): ##STR1## where Y is O or S attached to the phthalocyanine ring, Z is the group of atoms required to complete a carbon or heterocyclic ring together with C, A.sub.1 is a monovalent substituent bulkier than a hydrogen atom, and each of X.sub.1 and X.sub.2 is H or a monovalent substituent or, in the alternative, X.sub.1 and X.sub.2, taken together, form a single bond, ##STR2## where Y and Z.sub.1 have the same meanings as defined for Y and Z in formula (1). A.sub.11 is a monovalent substituent having a branched alkyl group, which is attached to the ring completed by Z.sub.1, and s1 is the number of A.sub.11, is used for the recording layer of an optical recording layer. This phthalocyanine dye is unlikely to attack a substrate material such as PC, can be handled with ease, and has a high solubility in a coating solvent advantageous for film formation, for instance, an alcoholic solvent, e.g., ethyl cellosolve or an aliphatic hydrocarbon solvent.
摘要:
A recording layer contains a dye A having a complex index of refraction at 780 nm whose real part n is 1.8-2.8 and imaginary part k is up to 0.15 and forming a thin film exhibiting an absorption spectrum whose half-value width is up to 170 nm and a dye B having a complex index of refraction at 630 nm or 650 nm whose real part n is 1.8-2.8 and imaginary part k is up to 0.2. An optical recording medium capable of writing and reading in a conventional wavelength region of about 780 nm and a shorter wavelength region of about 630 to 680 nm is obtained.
摘要:
A photoelectric conversion device that includes a work electrode, an opposed electrode, and an electrolyte-containing layer. In the work electrode, a metal oxide semiconductor layer supporting a dye is provided. The dye contains a cyanine compound that has a methine chain, an indolenine skeleton bonded with both ends of the methine chain, and anchor groups introduced to a nitrogen atom included in the indolenine skeleton. Electron injection efficiency to the metal oxide semiconductor layer is improved, and the dye is hardly exfoliated from the metal oxide semiconductor layer.
摘要:
The invention provides an ultrasonic probe having a frame to constitute a part of a cubicle, a motor fixed on the frame, a first arm with one end fixed on a rotating shaft of the motor, and a second arm with one end rotatably coupled with the other end of the first arm via a coupling shaft and with the other end having an ultrasonic element mounted thereon. The second arm has a lengthwise long groove and is slidably engaged with the fixed shaft of the frame in the direction of length. The length from an end of the second arm where the ultrasonic element is mounted on the coupling shaft is designed to be longer than the length from the rotating shaft to the coupling shaft, and further, to be longer than the length from the rotating shaft to the fixed shaft.
摘要:
A photoelectric conversion element includes a working electrode having a dye-supported metal oxide electrode in which a dye is supported on a metal oxide layer, a compound having a structure represented by the following general formula (1): is used as the dye. wherein R1 to R4 are each independently a linear alkyl group having 4 to 20 carbon atoms and may be the same or different; A1 and A2 are each any one selected from the following aromatic ring group A (a pyrrole ring in the formula (1) is represented by an arc a to show a condensation position with the pyrrole ring), may be the same or different, and may have a substituent in an aromatic ring; Anp- is a p-valent anion; p is 1 or 2; and q is a coefficient for keeping a charge of the entire dye neutral.
摘要:
A photoelectric conversion device capable of improving conversion efficiency is provided. The photoelectric conversion device includes a work electrode, an opposed electrode, and an electrolyte-containing layer. In the work electrode, a metal oxide semiconductor layer supporting a dye is provided. The dye contains a cyanine compound that has a methine chain, an indolenine skeleton bonded with both ends of the methine chain, and anchor groups introduced to a nitrogen atom included in the indolenine skeleton. Electron injection efficiency to the metal oxide semiconductor layer is improved, and the dye is hardly exfoliated from the metal oxide semiconductor layer.