摘要:
In a discharge lamp driving circuit comprising: a transformer having one end of a discharge lamp connected to one end of the secondary side thereof; a current-voltage converting circuit provided at the other end of the discharge lamp and functioning to convert a lamp current to a voltage; and a lamp current controlling pattern provided at the other end of the discharge lamp, there is provided a discharge detecting pattern at a grounding end of the secondary side of the transformer so as to be located close to and in parallel with the lamp current controlling pattern, whereby a voltage induced in the discharge detecting pattern is detected, and the supply of electric power to the secondary side of the transformer is stopped. Thus, the discharge lamp driving circuit is deactivated when a discharge occurs at the wiring at the secondary side of the high-voltage transformer.
摘要:
An electronic component substrate 1-1 includes an insulating base 10 and a flexible circuit board 20 mounted on the insulating base 10. The flexible circuit board 20 is a synthetic resin film provided thereon with terminal patterns 29 and a conductor pattern 25 whose surface is slidingly contacted with a slider. The insulating base 10 is a synthetic resin molded piece. The flexible circuit board 20 is insert-molded to the insulating base 10. The electronic component substrate 1-1 is produced by preparing the flexible circuit board 20 and first and second mold members 41 and 45 having a cavity C1 with a shape that corresponds to the external shape of the electronic component substrate 1-1. Then, the flexible circuit board 20 is accommodated in the cavity C1 between the first and second mold members 41 and 45, and a molten molding resin is filled into the cavity C1. After the filled molding resin has been solidified, the first and second mold members 41 and 45 are removed.
摘要:
In a pulse width modulation circuit, which generates an output whose pulse width is modulated by controlling a duty ratio of an oscillation circuit adapted to generate an oscillation at a frequency determined by a resistor and a capacitor to be electrically charged via the resistor, there is provided a resistance value varying means to vary a value of the resistor. The value of the resistor is varied by shorting the both ends of the resistor with a transistor, whereby the capacitor is charged in a reduced amount of time realizing a high-speed pulse width modulation circuit.
摘要:
An inkjet recording medium having: a support on which polyolefin resin is coated; and a porous ink absorbing layer containing a hydrophilic binder and inorganic fine particles, which is provided on the support, wherein a surface facing to the ink absorbing layer of the support is a fine-grained surface having about 5 through 10 rugged configurations arranged regularly at intervals of 3 mm; and wherein the surface has the center-line average roughness is not less than 2.5μm when a reference length is 2.5 mm and a cutoff value is 0.8 mm, and the ratio of the ten-point mean roughness of the surface to the center-line average roughness thereof is 4 to 7.
摘要:
Transmit data of every transmission time interval on each channel is segmented at a frame period to obtain frame data, the frame data on each channel is multiplexed and transmitted and identification information (TFCI), which specifies a combination of frame data lengths on each channel, is transmitted frame by frame. In this case, all identification information of all frames in a maximum transmission time interval is made identical and transmitted. If identification information is not the same in all frames of the maximum transmission time interval on the receiving side, then it is construed that an error has occurred and the true identification information is decided by majority rule.
摘要:
A fixing belt or a fixing roller for fixing an ink jet image recorded on an ink jet recording material by heat, the fixing belt comprising a base material having thereon a surface layer contacting the ink jet recording material during fixing, the fixing roller comprising a heating roller and a pressure roller having base materials A and B, respectively, at least one of the heating roller and the pressure roller having a surface layer contacting the ink jet recording material during fixing, wherein the surface layer has a peel strength of not less than 30 g/5 cm or a pencil hardness of HB or more, and the surface layer is produced by a method comprising the steps of: coating a hardenable silicone on the base material by a dip coating; and hardening the coated hardenable silicone by heat.
摘要:
An inverter transformer includes: a frame-core shaped substantially square; a plurality of I-cores disposed inside and coupled to the frame-core so as to provide a predetermined leakage inductance; and a plurality of primary and secondary windings provided respectively around the I-cores. The I-cores are divided into first group cores located not adjacent to one another and second group cores located not adjacent to one another but adjacent respectively to the first group cores. Magnetic fluxes generated in the first group cores flow in the same direction, magnetic fluxes generated in the second group cores flow in the same direction that is opposite to the direction of the magnetic fluxes generated in the first group cores, and respective voltages induced at secondary windings provided respectively around the first and second group cores are polarized identical with each other.
摘要:
A surveying instrument includes a surveying instrument body which is rotatable about vertical and horizontal axes and has a telescope optical system for collimating the surveying instrument relative to a survey point; a collimator optical system for projecting first light rays toward the survey point and for receiving the first light rays reflected at the survey point; an auto-collimating system which rotates the surveying instrument body to position the survey point on an optical axis of the telescope optical system; a distance measuring optical system for projecting second light rays toward the survey point and for receiving the second light rays reflected at the survey point; and a distance measuring device for calculating a distance from the surveying instrument to the survey point. The optical axes of the collimator optical system and the distance measuring optical system are offset from each other.
摘要:
An ink-jet recording sheet comprising a support having thereon in the following order: (i) a first ink absorbing layer comprising gelatin and a first cationic polymer; and (ii) a second ink absorbing layer comprising gelatin and a second cationic polymer, wherein the first cationic polymer has a larger ink absorption ratio Ai than the second cationic polymer, the ink absorption ratio Ai being defined by the following equation: Ai (%)=((an optical density of a print after immersion in water)/(an optical density of a print before immersion in water))×100.
摘要:
A discharge lamp lighting device comprises a plurality of discharge lamps, at least one reflector, and at least one leakage transformer. Each leakage transformer lights three discharge lamps and comprises: a first leakage transformer, which comprises a frame-core shaped substantially rectangular and two bar-cores disposed parallel to each other and orthogonal to two opposing sides of the frame-core with a predetermined gap from the frame-core, has two of primary and secondary windings structurally independent of each other, and which lights two discharge lamps of the three; and a second leakage transformer, which comprises a frame-core shaped substantially like square-U letter and a bar-core disposed orthogonal to two opposing sides of the frame-core with a predetermined gap from the frame-core, has one primary and secondary winding structurally independent of each other, and which lights remaining one discharge lamp.