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Now showing items 1 - 14 of 14

  • ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC DEVICE, AND PROCESS CARTRIDGE

    Provided are an electrophotographic photoreceptor having satisfactory abrasion resistance and electrical properties and capable of suppressing image deletion, an electrophotographic device having the electrophotographic photoreceptor, and a process cartridge. A surface layer of the electrophotographic photoreceptor contains a polymer of hole transport material having a polymerizable functional group, the hole transport material having a specific structure.
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  • INTERNAL COMBUSTION ENGINE AND METHOD OF PRODUCING SAME

    An internal combustion engine (10) in which an anodic oxidation coating film (61, 62, 63, 64) is formed on all or a portion of a wall that faces a combustion chamber (NS), wherein the anodic oxidation coating film (61, 62, 63, 64) has a structure that is provided with a bonding region in which each of hollow cells (C) forming the coating film is bonded to the adjacent hollow cells (C), and a nonbonding region in which three or more adjacent hollow cells (C) are not bonded to each other, and wherein a porosity of the anodic oxidation coating film (61, 62, 63, 64) is determined by a first void (Kl) present in the hollow cell (C) and a second void (K2) that forms the nonbonding region.
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  • SPARK PLUG

    A spark plug includes an insulator, a housing within which the insulator is housed, and a plug pocket that is formed between the housing and the insulator. The housing includes a first metal that forms a base material, and a second metal that has a thermal conductivity higher than that of the first metal. The second metal forms the least part of a portion of the housing, the portion being located around the plug pocket.
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  • UV-CURABLE LIQUID DEVELOPER, FIXING METHOD, IMAGE FORMING METHOD, AND UV-CURABLE COMPOSITION

    Provided is a UV-curable liquid developer remaining in an apparatus hardly cures with visible light even when the apparatus is opened for the purpose of, for example, its maintenance, and the UV-curable liquid developer shows sufficient fixability by irradiation of the UV light. The. UV-curable liquid developer includes: toner particles; a polymerization initiator; a sensitizer; and a polymerizable monomer, in which the sensitizer contains a compound represented by X-Y, where X represents a triphenylenyl group or the like and Y represents a triphenylenyl group or the like.
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  • FUSED POLYCYCLIC AROMATIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE USING THE COMPOUND

    Provided are a novel fused polycyclic aromatic compound having a fluoranthene skeleton and an organic light emitting device having high efficiency and high durability. The organic light emitting device includes a fused polycyclic aromatic compound represented by the following general formula [1] or [2], and the organic light emitting device includes an anode, a cathode, an organic compound layer interposed between the anode and the cathode, in which at least one layer of the organic compound layers includes at least one kind of the fused polycyclic aromatic compound represented by the following general formula [1] or [2].
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  • Effects of High Boiling Point Fuel Additives on Deposits in a Direct Injection Gasoline Engine

    Nagano, Susumu   Yokoo, Nozomi   Kitano, Koji   Nakata, Koichi  

    The effects of high boiling point fuel additives on deposits were investigated in a commercial turbocharged direct injection gasoline engine. It is known that high boiling point substances have a negative effect on deposits. The distillation end points of blended fuels containing these additives may be approximately 15 degrees C higher than the base fuel (end point: 175 degrees C). Three additives with boiling points between 190 and 196 degrees C were examined: 4-tert-Butyltoluene (TBT), N-Methyl Aniline (NMA), and 2-Methyl-1,5-pentanediamine (MPD). Aromatics and anilines, which may be added to gasoline to increase its octane number, might have a negative effect on deposits. TBT has a benzene ring. NMA has a benzene ring and an amino group. MPD, which has no benzene ring and two amino groups, was selected for comparison with the former two additives. The base gasoline was a Toyota in-house premium grade test gasoline with properties in the range defined by the Japanese Industrial Standards (JIS) (RON: approximately 100) with no detergent content. Test gasolines were prepared by blending the base gasoline with 10% of each additive by volume. The concentration of the additives was set to 10% to accelerate deposit formation. The engine operating conditions for examining deposit formation were an engine speed of 1,600 rpm and medium load. Deposit formation was examined over a period of 30 hours, after which the fuel consumption was approximately 200 L. It was found that amino group additives caused large increases in deposits. Compared to the base gasoline, the piston top deposits were about twice as thick with the TBT blend and about four times as thick with the NMA blend. The MPD blend caused compression leakage after fuel consumption of 10 L because the piston rings stuck to the grooves. Chemical analysis of the deposit formation mechanism suggests that deposits were formed by high boiling point polar substances that penetrated into the quenching zone near the combustion chamber surfaces, and then oxidized, polymerized, or carbonized, and adhered to the surfaces.
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  • Heat Battery for Quick Engine Warm-up and Quick Heating

    Nakata, Koichi   Mogi, Kazuhisa   Yamamura, Yoshihiro  

    Heat battery and its system were studied with the view of reducing fuel consumption and exhaust emissions, and of quick cabin heating. The heat battery is composed of a latent heat material (CH3COONa·3H2O) which has the characteristic of supercooling and a high performance heat-exchanger. Wasted heat energy from warmed engine-coolant was stored in the battery and discharged by phase change at next cold start. On the vehicle tests, it was confirmed that the heat battery reduced fuel consumption and HC emission during a short distance trip at a low temperature, and that it rised cabin air temperature quickly.
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  • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS, AND CONDENSED POLYCYCLIC AROMATIC COMPOUND

    To provide an electrophotographic photosensitive member which satisfies abrasion resistance and electrical properties and which is difficult to cause image deletion. A surface layer of the electrophotographic photosensitive member of this invention contains a polymerized product of a hole transporting compound having a polymerizable functional group, in which the hole transporting compound is at least one compound selected from the group consisting of: a compound consisting of one or more carbon atoms, one or more hydrogen atoms, and one or more halogen atoms; and a compound consisting of one or more carbon atoms, one or more hydrogen atoms, one or more oxygen atoms, and one or more halogen atoms.
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  • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS, AND CONDENSED POLYCYCLIC AROMATIC COMPOUND

    Provided are an electrophotographic photosensitive member which satisfies wear resistance and electrical characteristics, and in which image deletion is satisfactorily suppressed, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. The electrophotographic photosensitive member comprises a surface layer which includes a polymerized product of a hole transporting substance having a reactive functional group, in which a structure other than the reactive functional group of the hole transporting substance is one of: a structure consisting of a carbon atom and a hydrogen atom; and a structure consisting of a carbon atom, a hydrogen atom and an oxygen atom, and the structure other than the reactive functional group of the hole transporting substance comprises a specific conjugate structure.
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  • Fundamental analysis on auto-ignition condition of a lubricant oil droplet for understanding a mechanism of low-speed pre-ignition in highly charged spark-ignition engines

    Ohtomo, Mitsuaki   Suzuoki, Tetsunori   Miyagawa, Hiroshi   Koike, Makoto   Yokoo, Nozomi   Nakata, Koichi  

    This article presents a study of the mechanism that the lubricant oil droplet initiates low-speed pre-ignition in highly boosted downsized gasoline engines. Low-speed pre-ignition is a phenomenon that the fuel-air mixture ignites before the spark timing, leading to flame propagation that results in a heavy knock. The ignition of lubricant oil droplets is thought to be one possible mechanism for low-speed pre-ignition. However, the oil droplet ignition conditions are not yet well understood. First, the conditions under which a single oil droplet initiates the combustion of a fuel-air mixture were investigated using a rapid compression and expansion machine. When an initial droplet temperature was above 250 degrees C, the vaporized oil ignited before the gasoline-air mixture, in which case the combustion of the gasoline-air mixture around the droplet was initiated. The numerical results showed that the oil droplet temperature increases above 250 degrees C if the droplet is heated by burned gas remaining in the combustion chamber from the previous cycle. A direct-injection single-cylinder research engine was operated under the condition that no residual gas exists in the combustion chamber. In this case, no low-speed pre-ignition occurred even if gross indicated that mean effective pressure was 2.5 MPa. These results indicate that an oil droplet does not cause low-speed pre-ignition if any droplet flies into the combustion chamber unless it remains in the chamber over the exhaust stroke.
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  • 9437511 Heat battery for quick engine warm-up and quick heating: Koichi Nakata, Kazuhisa Mogi, Yoshihiro Yamamura (Toyota Motor Corporation), pp. 101–104, 14 figs., 1 table, 4 refs

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  • 9437511 Heat battery for quick engine warm-up and quick heating: Koichi Nakata, Kazuhisa Mogi, Yoshihiro Yamamura (Toyota Motor Corporation), pp. 101–104, 14 figs., 1 table, 4 refs

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  • New resin molded tantalum capacitors designed for severe environment: Koichi Shirai, Takehiko Nakata, Koichi Morimoto, Yoshinobu Kawakami and Yoshihiko Saiki. NEC Research and Development, No. 59, p. 28 (October 1980)

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  • New resin molded tantalum capacitors designed for severe environment: Koichi Shirai, Takehiko Nakata, Koichi Morimoto, Yoshinobu Kawakami and Yoshihiko Saiki. NEC Research and Development, No. 59, p. 28 (October 1980)

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