Abstract: For the purpose of letting a fiber structure formed of polyester-based fibers have high hydrolysis resistance, spun fibers are treated by a terminal blocking agent, to have the terminal blocking agent taken up inside the fibers, for blocking the terminal carboxyl groups, followed by washing with water, drying and heat treatment.

Abstract: A chain tensioner device includes a main arm, tensioner lifter, and a sub-arm. The main arm is pivotally supported by a first shaft. The main arm slidably contacts an endless chain to apply a tension to the endless chain. The tensioner lifter includes a housing, a plunger, and a spring. The plunger is slidably held by the housing. The spring is to press the plunger such that the plunger projects from the housing. The sub-arm is disposed between the main arm and the tensioner lifter. The sub-arm is pivotally supported by a second shaft to transmit a biasing force applied by the plunger of the tensioner lifter to the main arm. A moving direction of the plunger is substantially orthogonal to a direction of a tangent at a contact portion between the plunger and the sub-arm when an elongation of the endless chain reaches a maximum elongation.

Abstract: A switching-control circuit to control a switching operation of a transistor, having an input electrode applied with the input voltage and an output electrode connected to a load via an inductor, to generate an output voltage of a target level from an input voltage, includes: a voltage-generating circuit to generate a slope voltage based on the output voltage in each of a switching period of the transistor, the slope voltage changing with a slope corresponding to the output voltage; an adding circuit to add the slope voltage to a reference voltage, indicating a reference of the output voltage of the target level, or a feedback voltage corresponding to the output voltage; and a drive circuit to perform the switching operation of the transistor, when a level of either one voltage, added with the slope voltage, of the reference and feedback voltages reaches a level of an other voltage thereof.

Abstract: A switching-control circuit configured to keep a transistor on for a predetermined time to generate a target-level-output-voltage from an input voltage. The circuit is configured to generate, every switching period of the transistor, a slope voltage corresponding to that of a ripple voltage contained in an output voltage during a time period when the transistor is off, limit an amplitude of the slope voltage so as not to exceed a predetermined amplitude greater than the amplitude of the slope voltage when the target-level-output-voltage is generated, add the slope voltage to a reference voltage, indicating a reference of the target-level-output-voltage, or a feedback voltage corresponding to the output voltage, and keep the transistor on for a predetermined time and thereafter turn off the transistor, when a level of either one voltage, added with the slope voltage, of the reference voltage and the feedback voltage reaches a level of another voltage thereof.

Abstract: A switching-control circuit, which causes a first transistor, having an input electrode to be applied with an input voltage and an output electrode connected to an inductor and a diode, to be turned on and kept on for a predetermined time period, includes: a comparison circuit to compare a feedback voltage corresponding to an output voltage with a reference voltage; a detecting circuit to detect a switching period of the first transistor; and a driving circuit to turn off a second transistor connected in parallel to the diode as well as turn on the first transistor to be kept on for the predetermined time period, and thereafter, turn off the first and second transistors, when the feedback voltage becomes lower than the reference voltage, and turn off the first transistor as well as turn on the second transistor, when the switching period becomes longer than a predetermined period.

Abstract: A switching-control circuit configured to keep a transistor on for a predetermined time to generate a target-level-output-voltage from an input voltage. The circuit configured to generate, every switching period of the transistor, a slope voltage corresponding to that of a ripple voltage contained in an output voltage during a time period when the transistor is off, limit an amplitude of the slope voltage so as not to exceed a predetermined amplitude greater than the amplitude of the slope voltage when the target-level-output-voltage is generated, add the slope voltage to a reference voltage, indicating a reference of the target-level-output-voltage, or a feedback voltage corresponding to the output voltage, and keep the transistor on for a predetermined time and thereafter turn off the transistor, when a level of either one voltage, added with the slope voltage, of the reference voltage and the feedback voltage reaches a level of another voltage thereof.

Abstract: A switching-control circuit to control a switching operation of a transistor, having an input electrode applied with the input voltage and an output electrode connected to a load via an inductor, to generate an output voltage of a target level from an input voltage, includes: a voltage-generating circuit to generate a slope voltage based on the output voltage in each of a switching period of the transistor, the slope voltage changing with a slope corresponding to the output voltage; an adding circuit to add the slope voltage to a reference voltage, indicating a reference of the output voltage of the target level, or a feedback voltage corresponding to the output voltage; and a drive circuit to perform the switching operation of the transistor, when a level of either one voltage, added with the slope voltage, of the reference and feedback voltages reaches a level of an other voltage thereof.

Abstract: A chain tensioner device includes a main arm, tensioner lifter, and a sub-arm. The main arm is pivotally supported by a first shaft. The main arm slidably contacts an endless chain to apply a tension to the endless chain. The tensioner lifter includes a housing, a plunger, and a spring. The plunger is slidably held by the housing. The spring is to press the plunger such that the plunger projects from the housing. The sub-arm is disposed between the main arm and the tensioner lifter. The sub-arm is pivotally supported by a second shaft to transmit a biasing force applied by the plunger of the tensioner lifter to the main arm. A moving direction of the plunger is substantially orthogonal to a direction of a tangent at a contact portion between the plunger and the sub-arm when an elongation of the endless chain reaches a maximum elongation.

Abstract: A switching-control circuit, which causes a first transistor, having an input electrode to be applied with an input voltage and an output electrode connected to an inductor and a diode, to be turned on and kept on for a predetermined time period, includes: a comparison circuit to compare a feedback voltage corresponding to an output voltage with a reference voltage; a detecting circuit to detect a switching period of the first transistor; and a driving circuit to turn off a second transistor connected in parallel to the diode as well as turn on the first transistor to be kept on for the predetermined time period, and thereafter, turn off the first and second transistors, when the feedback voltage becomes lower than the reference voltage, and turn off the first transistor as well as turn on the second transistor, when the switching period becomes longer than a predetermined period.

Abstract: In its broadest concept, the present invention relates to an improved gear oil comprising: a) a base oil having a viscosity range of 4 to 32 cSt at 100° C.; b) a maximum level of hydrocarbyl polysulfide with a minimum level of active S species; c) a dihydrocarbyl dithiophosphate ester or salt; and d) a dihydrocarbyl (mono)thiophosphate amine salt, essentially free of phosphite.

Abstract: For the purpose of letting a fiber structure formed of polyester-based fibers have high hydrolysis resistance, spun fibers are treated by a terminal blocking agent, to have the terminal blocking agent taken up inside the fibers, for blocking the terminal carboxyl groups.

Abstract: [Problem to be Solved] To stably supply a fiber structure having excellent ashing durability, water/oil repellency and antifouling properties. [Solution] A fiber structure characterized in that each of the single fibers used in it is covered, on the surface thereof, with a resin film containing an organic fluorochemicals via a resin film containing a triazine ring-containing compound or containing an organic fluorochemicals and a triazine ring-containing compound, and that said fiber structure has a water repellency level of grade 4 or higher and an oil repellency level of grade 4 or higher after 20 times of washing.

Abstract: First, a user who will try a service of a print system registers trial from a user system in the print system. When the trial of the print system from the user system is permitted and registered, the print system provides an RIP processing or a printing processing to a user in response to a processing request from the registered user system within a range set for the trial without charge or with a discount accounting.

Abstract: An image forming control apparatus includes: a gradation correction curve generator and a calibration data generator. The gradation correction curve generator generates a gradation correction curve based on a correspondence between an output instruction values each representing a density of an image to be formed by an image forming apparatus and actual density values each representing a density of the image formed by the image forming apparatus. The gradation correction curve represents a correspondence between predetermined standard density values and the output instruction values. When an output instruction value corresponding to a maximum standard density value is smaller than a maximum output instruction value, the calibration data generator corrects the gradation correction curve so that the output instruction value corresponding to the maximum standard density value coincides with the maximum output instruction value, and generates the calibration data based on the corrected gradation correction curve.

Abstract: An image-formation control apparatus is connected to an image forming apparatus for forming an image on a medium with a plurality of color materials. The image-formation control apparatus includes a receiving unit and a first calibration unit. The receiving unit receives an image formation command, which is to be executed by the image forming apparatus. The first calibration unit generates a first formation command to form a first number of color patches for adjusting output characteristics of the color materials in the image forming apparatus and outputs the generated first formation command to the image forming apparatus. The first calibration unit calculates an estimated consumption amount of each color material used in the image forming apparatus on a basis of the received image formation command and determines colors of the color patches formed on a patch sheet on a basis of the estimated consumption amount.

Abstract: The invention is directed to providing an electrostatic breakdown protection circuit having an enhanced performance of protecting an internal circuit from a surge voltage such as static electricity (an operation speed or resistance to electrostatic breakdown). An N-channel type MOS transistor is connected between a wiring and a VSS (ground voltage) wiring. A first capacitor is connected between the wiring and a gate of the MOS transistor, and a second capacitor is connected between the VSS wiring and the gate. A voltage applied to an input/output terminal is divided by these capacitors, and the divided voltage is applied to the gate. When a surge voltage occurs, the MOS transistor is forced to turn on by the divided voltage to flow a current, thereby protecting an internal circuit. When a larger surge voltage occurs, a parasitic bipolar transistor turns on. A Zener diode is disposed between the gate and the VSS wiring in order to prevent a voltage applied to the gate from exceeding a predetermined voltage.

Abstract: An image forming control apparatus includes: a gradation correction curve generator and a calibration data generator. The gradation correction curve generator generates a gradation correction curve based on a correspondence between an output instruction values each representing a density of an image to be formed by an image forming apparatus and actual density values each representing a density of the image formed by the image forming apparatus. The gradation correction curve represents a correspondence between predetermined standard density values and the output instruction values. When an output instruction value corresponding to a maximum standard density value is smaller than a maximum output instruction value, the calibration data generator corrects the gradation correction curve so that the output instruction value corresponding to the maximum standard density value coincides with the maximum output instruction value, and generates the calibration data based on the corrected gradation correction curve.

Abstract: An image-formation control apparatus is connected to an image forming apparatus for forming an image on a medium with a plurality of color materials. The image-formation control apparatus includes a receiving unit and a first calibration unit. The receiving unit receives an image formation command, which is to be executed by the image forming apparatus. The first calibration unit generates a first formation command to form a first number of color patches for adjusting output characteristics of the color materials in the image forming apparatus and outputs the generated first formation command to the image forming apparatus. The first calibration unit calculates an estimated consumption amount of each color material used in the image forming apparatus on a basis of the received image formation command and determines colors of the color patches formed on a patch sheet on a basis of the estimated consumption amount.

Abstract: In an image forming method and apparatus, a starting point location is acquired for carrying out rasterization of a subfile by interpreting a page descriptive language in the subfile, which is contained in a page print information file, and region size information for forming an image is also acquired from the subfile. Further, any non-interpretable description in the subfile is detected, and when a non-interpretable description is detected in the subfile, a predetermined image is formed at a predetermined position specified by either the starting point location or the starting point location and the region size information.

Abstract: A sheet, characterized in that it comprises a film comprising a thermoplastic resin and, laminated on at least one surface of the film, a fiber fabric containing a flame-proof compound, and the fiber fabric comprises the same kind of a thermoplastic resin as that of the film; and a curtain using the sheet. The sheet is a functional sheet which is excellent in flame-proof property, and also excellent in light controlling property and anti-static property.