摘要:
A colorant contains a crystal of a compound represented by the following formula (1): the crystal having a crystal form showing main peaks at interplanar spacings d of 3.45±0.5 Å, 3.63±0.5 Å, 4.23±0.5 Å, 6.65±0.5 Å, and 7.84±0.5 Å in powder X-ray diffraction pattern with CuKα radiation.
摘要:
In a driving mechanism of an optical device that communicates the motive power generated at a drive source to an object to be driven by employing a plurality of gears, the plurality of gears are each constituted by using, at least, one of; polyester, polyamide and polyacetals. The plurality of gears include a gear having a low bending elastic modulus set to 10 kgf/mm2 or higher and 100 kgf/mm2 or lower and a gear having a high bending elastic modulus set to 50 kgf/mm2 or higher and 1000 kgf/mm2 or lower that meshes with the gear having the low bending elastic modulus, and thus, it becomes possible to reduce the noise generated at the gear meshing portion without compromising the durability of the gears.
摘要:
Disclosed is a brake disc rotor comprising a first disc plate, a second disc plate facing the first disc plate, a plurality of fins arranged in the radial direction of the brake disc rotor between the first and second disc plates, and a plurality of ventilation holes each of which is positioned between neighboring fins of the plurality of fins and communicates a space on the inner circumferential side and a space on the outer circumferential side in the radial direction of the brake disc rotor. The plurality of fins have a plurality of sets each including two long fins and two short fins, one of the two long fins has an expanded part which is expanded in its width direction, the long fins and the short fins are alternately arranged in the circumferential direction of the brake disc rotor in each of the plurality of sets, and the plurality of sets are arranged at equal intervals in the circumferential direction of the brake disc rotor.
摘要:
A focal plane shutter provides an extremely durable and reliable super-high speed shutter with speeds of greater than 1/8000 second which minimizes increases in the charge energy, has an increased rate of acceptance of the FRP and is economical to produce. The blades will not collide with or be damaged by the intermediate plate and the light shielding plate, even when the shutter is released while accelerating the camera in a direction virtually perpendicular to the direction of movement of the blades. The focal plane shutter includes a front and a rear blind that each include multiple dividing blades. The rigidity of the slit-forming blades having the largest amount of movement among the dividing blades differs between the front blind and the rear blind.
摘要:
The present invention aims at improving the durability of a very high-speed shutter exceeding 1/8000 sec and further attaining a very high shutter speed even with sectors composed of a material exhibiting a low rigidity. For this purpose, a focal plane shutter device comprises: first and second blinds each constructed of a plurality of sectors; and a light shielding plate having an opening and an intermediate plate disposed between the first blind and the second blind. The first and second blinds are run in the facial direction of the light shielding plate so as to cover and expose the opening. The light shielding plate and the intermediate plate are bonded, or a shock absorbing member is interposed between these two plates.
摘要:
A method for bonding steel plates with a polyamide adhesive, comprising applying a composition comprising (1) a polyester resin comprising the reaction product of (a) a polycarboxylic acid component comprising at least one of a polycarboxylic acid, an anhydride thereof, an ester thereof or a mixture thereof with (b) a polyhydric alcohol component comprising at least one polyhydric alcohol or a mixture thereof, with at least some of one of the polycarboxylic acid component and the polyhydric alcohol component being trivalent or higher, and (2) a bisphenol A-type epoxy resin, on a steel plate; baking the coating by heating; juxtaposing the coated steel plates to be bonded with a polyamide adhesive therebetween; and bonding the steel plates with the polyamide adhesive, a primer composition for use therein and a polyester resin for use in the primer composition.
摘要:
A coated steel plate suitable for bonding with a polyamide adhesive comprising a steel plate having coated thereon (a) a composition comprising a thermosetting phenol resin and a bisphenol A type epoxy resin, the thermosetting phenol resin comprising the condensation product obtained on reacting under refluxing a phenol and formaldehyde in less than one mol per equivalent of the phenolic hydroxyl group in the presence of an alkali catalyst; (b) a composition comprising a thermosetting phenol resin and a bisphenol A type epoxy resin, the thermosetting phenol resin comprising the condensation product obtained by washing with water the condensation product obtained by reacting under refluxing a phenol and formaldehyde in less than one mol per equivalent of the phenolic hydroxyl group in the presence of an alkali catalyst and then heating the condensation product to temperatures above about 60.degree. C; (c) a composition comprising a thermosetting phenol resin and a bisphenol A type epoxy resin, the thermosetting phenol resin comprising the condensation product obtained by washing with water a condensation product obtained by reacting a phenol and formaldehyde in an amount more than about one mol per equivalent of the phenolic hydroxyl group under refluxing in the presence of an alkali catalyst and, then, further heating the condensation product to a temperature higher than about 60.degree. C with the addition of a phenol in an amount such that the total amount of the phenolic hydroxyl group is greater than one equivalent per mol of formaldehyde; or (d) mixtures thereof.
摘要:
A perimidine-based squarylium dye contains a compound represented by Formula (I), the compound containing an isomer A and satisfying the following formula: Pa≧95(%) wherein the isomer A is an isomer of the peak shown in the longest retention time among all peaks due to isomers obtained by analysis of the compound by means of reversed-phase high-performance liquid chromatography, and Pa represents a value of the peak area of the isomer A relative to the peak area of all peaks.
摘要:
A fixing device includes: a conveying unit that conveys a recording material with an image formed thereon toward a predetermined conveying direction so as to cross a fixing area where the image is heated to be fixed; a laser light source that has an irradiation area as the fixing area slantingly extending relative to a predetermined image arrangement reference direction along a width direction of the recording material crossing the conveying direction of the recording material, and irradiates the irradiation area with laser light; and a reflecting member that is provided so as to surround the irradiation area and has a reflecting face that reflects reflected light from the irradiation area so that the irradiation area is again irradiated with the reflected light.