Abstract:
PURPOSE:To obtain the excellent nonlinear optical characteristics rapid in response by converting 3-methyl-4-aniline (MNA) substituted by a >=19C on the amino group unto built-up molecular films by the Langmuir-Blodgett's method (LB method) to form a waveguide. CONSTITUTION:The organic nonlinear optical material us represented by formula I and the built-up molecular films (LB) films are laminated on a substrate, and it us the MNA alkyl chain derivative made by substituting >=19C long alkyl on the amino group. It is important to increase the carbon number to >=19 to execute the LB method, thus permitting the balance between the hydrophilicness and hydrophobicness of the MNA to be improved and facilitated for building up molecular films as the LB films. If the carbon number is smaller than 19, hydrophobicness becomes insufficient and difficult to laminate such films.
Abstract:
PURPOSE:To improve a traveling property and durability and to obtain good recording and reproducing characteristics when the above recording medium is used as a tape-shaped optical recording medium. CONSTITUTION:A protective film having an adequate contact angle with water and glass transition point is formed at 0.25 to 05lambda/n (lambda: the wavelength of reproducing light, (n): the refractive index of the protective film) film thickness. The protective film satisfying such characteristics include a protective film consisting of a fluorine polymer.
Abstract:
PURPOSE:To widen the width of material selection and to make improvement in sensitivity by dispersing a light absorptive dye and electron receptor or electron donor into a supporting material to form the above recording medium and specifying the free energy change of an electron transfer reaction. CONSTITUTION:This recording medium is constituted by dispersing the light absorptive dye and the electron receptor or electron donor into the supporting material and specifying the free energy change DELTAG of the electron transfer reaction to
Abstract:
PURPOSE:To form an org. dye layer and a polymer layer at the same time and to enable wide selection of materials by coating a substrate with a coating material prepared by dissolving the org. dye and the polymer which are insoluble to each other into one solvent. CONSTITUTION:On a transparent substrate 1 in which guide grooves are formed as required, the org. dye layer 2 which absorbs semiconductor laser light to effect photothermal conversion, the polymer layer 3 to protect the dye layer 2 are successively laminated. The org. solvent used for preparation of the coating material is properly selected from org. solvents used in the field of optical recording and from those compounds that have enough solubility to both of the org. dye and the polymer and give no damage on the substrate. As for the org. dye, those used in the filed of optical recording can be used, but it is required that the dye is insoluble with the polymer. Thereby, the uniform org. dye layer is formed without damaging the substrate, which improves the reliability of the medium.
Abstract:
PURPOSE:To form a homogeneous pigment group recording thin-film by using a solvent satisfying specific structure and viscosity. CONSTITUTION:When a pigment group recording thin-film is shaped onto a substrate, a solvent, viscosity of which at 20 deg.C extends over 0.5-5cp and which is shown by general formula R1-R2-OH (where R1 represents H or a 1-5C alkoxy group and R2 a 1-6C alkylene group in general formula), is employed. n- Propanol, isopropanol, isopropyl Cellosolve, etc. are cited as the solvent having such structure. Such a solvent has a wide compatible range, and displays excellent wettability without corroding a polycarbonate resin used as the substrate while it can shape a film superior in film thickness distribution when it is formed to pigment group thin-film composition paints.
Abstract:
PURPOSE:To decrease the quantity of light energy necessary for writing and to improve the recording sensitivity of a recording medium by recording signals as an array of the part where fluorescence is generated and part where the fluorescence is substan tially not generated to the recording medium, irradiating light to the recording medium and detecting the presence or absence of the generation of the fluorescence. CONSTITUTION:The generation of the fluorescence is used as a means for detecting the signal in this method, by which the detection ability is made extremely higher than the detection of the signal by the difference in degree. More specifically, 1pt.wt. 3'-methyl-3-ethoxy-6-nitro-8-methoxyspiro and 10pts.wt. phenoxy resin are dissolved in 100pts.wt. 1:1 solvent mixture composed of a methyl ethyl ketone and cyclohexanone and the soln. is coated on a quartz glass substrate 1 subjected to optical polishing by a spinner and is dried. UV light having 365nm wavelength is irradiated to the coating so that the entire surface forms a color. Then the fluorescence does not appear in the region of a long wavelength in the case B is which the surface is not made to form the color. The fluorescence is observed only in the case A in which the surface is made to form the color. The value of 10% is obtd. as the percentage modulation of the signal when such medium is used for an optical recording medium.
Abstract:
PURPOSE:To obtain an optical recording medium enabled in the almost permanent storage of recording and high density recording and having high resolving power, by forming a recording layer to either one of a non-heated substrate and a non-heated light absorbing layer by using either one of them as a substrate to be so as to provide the same as a vapor deposition film showing no light absorbing characteristic in the wavelength region of visible light. CONSTITUTION:An optical recording medium is constituted by providing a light absorbing layer and the recording layer adjacent to said light absorbing layer o a substrate, and the recording layer is formed by a vacuum vapor deposition method, which used either one of the non- heated substrate and the non-heated light absorbing layer as a vapor deposition substrate, as a vapor deposition film showing no light absorbing characteristic in the wavelength region of visible light. For example, an optical recording medium 1 is prepared by a method wherein a light absorbing layer 3 and a recordng layer 4 comprising a ZnS vapor deposition film with a thickness of about 850Angstrom are laminated to a glass substrate 2 with a thickness of about 2mm. and the recording layer 4 is formed by applying resistance heating to ZnS in a tungsten boat and forming the same to the light absorbing layer 3 by vapor deosition under such a condition that a vacuum degree is 3X10 Pa and a vapor deposition is 3-5 A/S. The formation of the recording layer 4 by vapor deposition is performed by holding the light absorbing layer 3 being the substrate to be subjected to vapor deposition to ambient temp. without heating the same.
Abstract:
PROBLEM TO BE SOLVED: To provide an aminostyryl compound having high amorphousness and chemical stability to heat and suitable for blue luminescence, to provide an organic electroluminescent element given by using the compound, and to provide a display device given by using the element. SOLUTION: This aminostyryl compound is expressed by general formula (1). The aminostyryl compound is contained in an organic layer, especially in a luminescent layer, of the organic electroluminescent element. COPYRIGHT: (C)2007,JPO&INPIT