Abstract:
A two-equivalent magenta coupler forming magenta dye images in a color photographic material by a coupling reaction with an oxidation product of a primary aromatic amino color developing agent and having the formula (I) ##STR1## wherein [A] represents a residue of a magenta dye-forming coupler; ##STR2## represents a group which is substituted for one of the hydrogen atoms of the active methylene group of the coupler A; Z represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group; B represents a --D-Y residue or an --N Q residue; D represents an oxygen atom, a sulfur atom, or an --NR-- group; R of the --NR-- group represents a hydrogen atom, an alkyl group, or an aryl group; Y represents an alkyl group, an aryl group, or a heterocyclic group; Q of the --N Q residue represents a non-metal atomic group necessary for forming a 5-membered or 6-membered nitrogen-containing heterocyclic group; n is 1 or 2 and when n is 2, B can also represent a --Y group; a color photographic silver halide light-sensitive material comprising a support having thereon at least one silver halide emulsion layer and containing the two-equivalent magnetic coupler having the formula (I); and an image forming method comprising developing an exposed photographic silver halide light-sensitive material comprising a support having thereon at least one silver halide emulsion layer is the presence of the two-equivalent magenta coupler having the formula (I).
Abstract:
A color photographic material comprising a support having coated thereon at least one silver halide emulsion layer containing a magenta dye forming coupler having a 3-anilino-5-pyrazolone ring in which the ortho position of the anilino group at the 3-position is substituted with a halogen atom, an alkyl group, an alkoxy group, an amide group, an aryl group, an aryloxy group, a cyano group, a nitro group, a hydroxyl group, or an amino group and having a hydrophobic residue of 8 to 32 carbon atoms, the silver halide emulsion layer or an emulsion layer adjacent to the silver halide emulsion layer containing a hydroquinone derivative having at least one substituent of at least 8 carbon atoms or a precursor capable of providing such a hydroquinone derivative by hydrolysis.The color photographic material provides magenta dye images having good color separation and less color fog and less color stains in the highlight areas.
Abstract:
In a plane perpendicular to an axial direction of a winding drum, side legs face each other along an X-direction. A Y-direction is perpendicular to the X-direction. A planar coil component is configured so that a point along the Y-direction, where width of a central leg is maximum along the X-direction is at a plus side of the Y-direction, in relation to a center of the Y-direction, of the central leg; width of the central leg along the X-direction monotonically decreases from the point; width of the central leg along the X-direction is longer than along the X-direction; distance between facing surfaces of the side legs is constant; the terminal board is on the minus side, along the Y-direction, of a flange; and an end of the winding extends through the flange at the minus side of the Y-direction.
Abstract:
A semiconductor laser drive system and a semiconductor laser driving method where both internal noise and optical feedback noise can be simultaneously reduced are provided at low cost and low power consumption. The semiconductor laser drive system in an optical pickup configured such that a turn light 9e from an irradiated object of a laser beam 9 emitted from a semiconductor laser 2 enters into the semiconductor laser 2 is composed of a drive circuit 3 for driving the semiconductor laser 2; an optical detector 6 for detecting light intensity of a laser beam 9b where the laser beam 9 emitted from the semiconductor laser 2 is ramified to convert the light intensity into an electric signal; and a feedback circuit that is composed of an amplifier circuit 7 and a filter circuit arranged between the drive circuit 3 and the light detector 6, and that applies electric negative feedback to the drive circuit 3 for reducing optical feedback noise if the frequency of the electric signal is within a frequency banc to be utilized as a signal, and that applies electric positive feedback to the drive circuit 3 for reducing internal noise if the frequency of the electric signal is outside the frequency band to be utilized as a signal.
Abstract:
A dimmer noise reducing circuit wherein vibration noise accompanying the activation/deactivation of a piezoelectric transformer can be reduced, while non-uniformity of brightness of a discharge lamp can be prevented. A chopping circuit turns on/off an output from an input voltage source in a given periodic manner and a full-bridge circuit that receives an output voltage (vb1) of the chopping circuit. An output from a lowpass filter is supplied to a piezoelectric transformer, an output current of which (Io) is supplied to a discharge lamp. The full-bridge circuit is controlled by a full-bridge drive circuit to switch the input voltage (VB1) from the chopping circuit. The drive frequencies of the FETs of the full-bridge circuit are decided by a voltage-controlled oscillator. The chopping circuit is connected to a duty varying circuit the full-bridge circuit is caused to operate with its duty fixed.
Abstract:
A semiconductor X-ray detector device has an i layer configured to substantially a circular cylindrical shape but not a conventional top-hat shape and a p layer provided to substantially cover the circumferential side of the i layer. Both an n+ layer and an n surface electrode are arranged smaller in the area than the bottom at the n surface electrode side of the i layer in order to expose the i layer entirely to the electric field E. Accordingly, the spectrum remains not fractured in the profile when the n+ layer and the n surface electrode are not greater in the area than 33% of the bottom at the n surface electrode side of the i layer, hence permitting the resolving power to stay high.
Abstract:
A lead-free metal solder material capable of realizing excellent bonding strength and hermetic sealing is provided. The solder alloy is a solder alloy for bonding to an oxide, and includes 2.0-15.0 mass % of Ag, more than 0.1-6.0 mass % of Al, and the remainder is composed of Sn and some inevitable impurities. The content of Al is preferably 0.3-3.0 mass %, and more preferably 0.5-3.0 mass %. The content of Ag is preferably 3.0-13.0 mass %, more preferably more than 5.0-12.0 mass %, and most preferably 6.0-10.0 mass %. A relation between Ag and Al that fits the inequality 0
Abstract:
Process for producing a 7-bromoquinolone-carboxylic acid derivative of the following formula or its salt by reacting a 2,4-dibromo-3-hydroxybenzoic acid ester compound of the formula R7a-x to obtain a 3-alkoxy-2,4-dibromobenzoic acid ester, subjecting the 3-alkoxy-2,4-dibromobenzoic acid ester to elimination reaction of the carboxyl-protecting group to obtain a 3-alkoxy-2,4-dibromobenzoic acid, subjecting the 3-alkoxy-2,4-dibromobenzoic acid to ketoesterification reaction to obtain a 3-alkoxy-2,4-dibromobenyolacetic acid ester, reacting the 3-alkoxy-2,4-dibromobenzoylacetic acid ester with an orthoester or an acetal, then reacting the reaction product with a compound of the formula R2— NH or its salt to obtain a 2-(3-alkoxy-2,4-dibromobenzoyl)-3-substituted aminoacrylic acid ester and subjecting the 2-(3-alkoxy-2,4-dibromobenzoyl)-3-substituted aminoacrylic acid ester to ring-closing reaction, and products thereof.
Abstract:
A main magnetic pole layer is formed on an insulating layer flattened into a high-flatness surface, and a yoke layer having a large film thickness is formed on the main magnetic pole layer independently of the main magnetic pole. The main magnetic pole layer has a front end surface formed in a shape with a width size gradually increasing in a direction of track width as the front end surface departs farther away from an auxiliary magnetic pole layer. A perpendicular magnetic recording head can be provided which can suppress the occurrence of fringing in a recording pattern, and can form the main magnetic pole layer with high pattern accuracy, and can satisfactorily-introduce a recording magnetic field to a fore end of the main magnetic pole layer.
Abstract:
The present invention relates to a method for producing a heat-resistant crimped yarn comprising: twisting yarn of a heat-resistant high functional fiber; twist-setting this twisted yarn by heat treatment; and untwisting this twist-set yarn, wherein a snarl value of the twist-set yarn is not more than 6.5.