摘要:
An apparatus for manufacturing an optical memory device, which comprises supplying rolls for continuously supplying a sheet-like substrate, a masking endless belt having a plurality of windows of size corresponding to the optical memory device, rolls for moving the sheet-like substrate and the masking endless belt in the same direction and at the same speed, a recording portion forming device for forming recording portions on the substrate through the masking endless belt, a guide truck providing device for providing along the substrate guide trucks for guiding a light beam, and a cutting device for cutting the substrate to a predetermined size.
摘要:
A method of manufacturing a thermal printing head includes forming a layer of polyimide resin precursor on a heat-resistant resin substrate on which two parallel common electrodes and a large number of lead electrodes are formed beforehand in such a manner that the lead electrodes are separated from the common electrodes by a predetermined distance and are disposed on one side of the common electrodes in a vertical direction. It further includes performing a first etching on the layer of polyimide resin precursor such that a predetermined pattern is formed. Heat treatment is then performed on the layer of polyimide resin precursor to simultaneously form, between the lead electrodes and the common electrode disposed close to the lead electrodes, a polyimide resin heat accumulating layer as a base for a heating resistor as well as a polyimide resin insulating layer capable of electrically insulating a jumper wire connecting the common electrode disposed remote from the lead electrodes to the heating resistor on the common electrode disposed close to the lead electrodes. The heating resistor is then formed on the polyimide resin heat accumulating layer. Finally, a wire connecting the heating resistor to the two common electrodes and to the plurality of lead electrodes is formed.
摘要:
An optical memory element contains first and second reflector films, wherein the first reflector film is made of a material of a sufficiently large light reflectance in a relative sense as compared to the second reflector film, and the second reflector film being made of a material of a sufficiently small thermal conductivity in a relative sense as compared to the first reflector film.
摘要:
A magnetooptical storage element comprising a recording layer of a multi-layered structure including a reflecting film, said reflecting film being made of metals or metalloids having a low thermal conductivity coefficient.
摘要:
A magneto-optical memory element includes a glass substrate and an amorphous Nd-Gd-Fe ternary alloy magnetic recording thin-film having an axis of easy magnetization perpendicular to its surface. The magneto-optical memory element shows a preferable coercive force, a high Kerr rotation angle in the reproduced laser beam, and the Curie temperature suited for a stable operation.
摘要:
A magneto-optic memory element includes a transparent substrate, a first transparent nitride film, a GdTbFe recording layer, a second transparent nitride film, and a reflection film formed in this order. The first transparent nitride film has an index of refraction higher than that of the second transparent nitride film. In a preferred form, the first transparent nitride film is a SiN film having the index of refraction of about 2.0, and the second transparent nitride film is an AlN film having the index of refraction of about 1.8 to 1.9.
摘要:
A process for producing high chromium steel is disclosed which comprises supplying molten iron in a smelting furnace with a solid chromium source, carbonaceous powder and oxygen-containing gas in amounts so controlled as to keep the melt at a temperature in the range of less than 1650.degree. C. and above the minimum melt temperature at the specific carbon and chromium levels in the melt and which is capable of performing preferential decarbonization while inhibiting the oxidation of chromium.
摘要:
A silicone resin sheet is formed from a resin composition containing a thermosetting silicone resin and microparticles. The complex viscosity thereof at a frequency of 10 Hz is 80 to 1000 Pa·s and the tan δ thereof at a frequency of 10 Hz is 0.3 to 1.6 obtained by a dynamic viscoelastic measurement at a frequency of 0.1 to 50 Hz at 30° C.; a rate of frequency increase of 10 Hz/min; and a distortion of 1% in a shear mode.
摘要:
A silicone resin composition includes (1) an organopolysiloxane having at least two alkenylsilyl groups in one molecule, (2) an organopolysiloxane having at least two hydrosilyl groups in one molecule, (3) a hydrosilylation catalyst, and (4) a curing retarder, wherein the curing retarder contains tetraalkylammonium hydroxide.
摘要:
A silicone resin composition contains a first organopolysiloxane having, in one molecule, both at least two ethylenically unsaturated hydrocarbon groups and at least two silanol groups; a second organopolysiloxane having, in one molecule, at least two hydrosilyl groups without having an ethylenically unsaturated hydrocarbon group; a hydrosilylation catalyst; and a hydrosilylation retarder.