摘要:
A carrier and a dummy toner are stored in a developing unit of a process cartridge in a brand new status. A plurality of process cartridges corresponding to a plurality of color toners is used in common. The color toners are respectively supplied to the developing unit from toner supply units after the process cartridges in the brand new status are installed in installation sections in a main unit of an image forming apparatus.
摘要:
A multi-functional admixture for simultaneously providing specified characteristics to hydraulic cement compositions such as concrete contains one or more of specified reaction mixtures obtained by specified two processes as well as partially or completely neutralized substances obtained from such a reaction mixture through a specified third process. The specified two processes include initiating a radical copolymerization process of a radical polymerizable monomer mixture containing maleic anhydride and a monomer of a specified kind in a non-aqueous system in the presence of a non-aqueous radical initiator and stopping the radical copolymerization reaction in its midst while the inversion rate of polymerization is at a specified level by adding water to the reaction system to thereby obtain a reaction mixture. The specified third process is for partially or completely neutralizing the reaction mixture.
摘要:
A high-strength hydraulic cement composition contains cement, fine aggregates, coarse aggregates, water and a specified admixture and has a unit amount of water in the range of 120-185 kg/m3. Water and the cement are contained at a ratio of 20-40% and the admixture is contained in the amount of 0.1-3.0 weight parts per 100 weight parts of the cement. The admixture is one or more selected from reaction mixtures obtained by specified two processes and partially or completely neutralized substances obtained from such a reaction mixture through these two processes and also a specified third process. The specified two processes include initiating a radical copolymerization process of a radical polymerizable monomer mixture containing maleic anhydride and a monomer of a specified kind in a non-aqueous system in the presence of a non-aqueous radical initiator and stopping the radical copolymerization reaction in its midst while the inversion rate of polymerization is at a specified level by adding water to the reaction system to thereby obtain a reaction mixture. The specified third process is for partially or completely neutralizing the reaction mixture.
摘要翻译:高强度水硬性水泥组合物含有水泥,细骨料,粗骨料,水和特定混合物,单位量为120-185kg / m 3以上的水。 水和水泥的含量为20-40%,混合物的含量为每100重量份水泥0.1-3.0重量份。 该混合物是选自通过两种方法获得的反应混合物和通过这两种方法从这种反应混合物获得的部分或完全中和的物质以及特定的第三种方法中的一种或多种。 指定的两个方法包括在非水系自由基引发剂的存在下,在非水系统中引发含有马来酸酐和特定种类的单体的自由基聚合性单体混合物的自由基共聚方法,并将其中的自由基共聚反应停止 同时通过向反应体系中加入水从而获得反应混合物,聚合反转速率在规定的水平。 指定的第三种方法是部分或完全中和反应混合物。
摘要:
A high-strength hydraulic cement composition contains cement, fine aggregates, coarse aggregates, water and a specified admixture and has a unit amount of water in the range of 120-185 kg/m3. Water and the cement are contained at a ratio of 20-40% and the admixture is contained in the amount of 0.1-3.0 weight parts per 100 weight parts of the cement. The admixture is one or more selected from reaction mixtures obtained by specified two processes and partially or completely neutralized substances obtained from such a reaction mixture through these two processes and also a specified third process. The specified two processes include initiating a radical copolymerization process of a radical polymerizable monomer mixture containing maleic anhydride and a monomer of a specified kind in a non-aqueous system in the presence of a non-aqueous radical initiator and stopping the radical copolymerization reaction in its midst while the inversion rate of polymerization is at a specified level by adding water to the reaction system to thereby obtain a reaction mixture. The specified third process is for partially or completely neutralizing the reaction mixture.
摘要翻译:高强度水硬性水泥组合物含有水泥,细骨料,粗骨料,水和特定混合物,单位量为120-185kg / m 3以上的水。 水和水泥的含量为20-40%,混合物的含量为每100重量份水泥0.1-3.0重量份。 该混合物是选自通过两种方法获得的反应混合物和通过这两种方法从这种反应混合物获得的部分或完全中和的物质以及特定的第三种方法中的一种或多种。 指定的两个方法包括在非水系自由基引发剂的存在下,在非水系统中引发含有马来酸酐和特定种类的单体的自由基聚合性单体混合物的自由基共聚方法,并将其中的自由基共聚反应停止 同时通过向反应体系中加入水从而获得反应混合物,聚合反转速率在规定的水平。 指定的第三种方法是部分或完全中和反应混合物。
摘要:
A carrier and a dummy toner are stored in a developing unit of a process cartridge in a brand new status. A plurality of process cartridges corresponding to a plurality of color toners is used in common. The color toners are respectively supplied to the developing unit from toner supply units after the process cartridges in the brand new status are installed in installation sections in a main unit of an image forming apparatus.
摘要:
An agent for stabilizing air content of hydraulic cement compositions includes graft copolymers obtained by a first step in which copolymers with average numerical molecular weight 5000-50000 are obtained by radical polymerization of a mixture of radical polymerizable monomers containing anhydrous maleic acid and monomers of a specified form, together in an amount of 80 molar % or more and at molar ratio of 40/60-60/40 and a second step in which graft copolymers are obtained by a graft reaction of 100 weight parts of the copolymers obtained in the first step and 7-60 weight parts of polyoxyalkylene monoalkylether and/or polyoxyalkylene monoalkenylether with a block addition of a total of 23-70 moles of ethylene oxide and propylene oxide per 1 mole of aliphatic alcohol with 8-20 carbon atoms. A hydraulic cement composition is produced with cement, aggregates, water, a cement dispersant, an agent for controlling air content and contains an agent for stabilizing air content as described above in the amount of 0.001-0.5 weight parts per 100 weight parts of the cement.
摘要:
A developing device for an image forming apparatus includes a developer carrier such as a developing sleeve having a magnetic field generating device therein which carries and conveys a developer containing toner and magnetic carrier particles. The developing device also includes a first regulating member such as a blade which regulates the developer being carried and conveyed by the developer carrier, and a developer storing section stores developer scraped off the developer carrier by the first regulating member. The developer storing section includes a second regulating member arranged upstream of the first regulating member with respect to a direction in which the developer carrier conveys the developer. The developing device further includes a toner storing section provided adjacent to the developer storing section to supply toner to the developer carrier. A contact condition of the developer carried on the developer carrier with the toner supplied to the developer carrier from the toner storing section is varied in accordance with variation of a toner density in the developer carried on the developer carrier to thereby vary a condition of the developer on the developer carrier to attract the toner. The second regulating member is spaced from the developer carrier such that when a thickness of a layer of the developer on the developer carrier increases due to an increase of the toner density in the developer on the developer carrier, the second regulating member regulates an increased amount of the developer being carried and conveyed by the developer carrier. The magnetic fields, toner speeds, and distances of the regulating members to the developer carrier satisfy predetermined conditions in different embodiments.
摘要:
The invention relates to an image forming device and method therefor solving the subject matter that, if the linear speed of the developing solution carrier for that of the latent image carrier is lowered in order to secure the development capacity, the line image is deteriorated and there occurs a troublesome matter such as the blanking at the halftone rear edge. Such image forming device of the present invention is provided with a two-component magnetic brush type developing apparatus in which the developing bias composed of the DC bias and the AC bias superposed thereon is applied to the developing apparatus, and the latent image formed on the latent image carrier is developed with the two-component developing solution including the magnetic toner and the magnetic carrier. In the image forming device, the magnetic substance including percentage of the magnetic toner is set to 5 wt %.about.35 wt %.
摘要:
Soil cement slurry is produced by mixing blast-furnace slag fine particles with a specified fineness and Portland cement at a specified ratio to prepare blast-furnace slag cement and using a specified amount of slurry composition for ground improvement including this blast-furnace slag cement with water and an admixture per 1 m3 of ground. The admixture contains specified amounts of a hardening accelerator, a defoamer and a fluidizer.
摘要:
Concrete compositions including a binder, water, a fine aggregate, a coarse aggregate and an admixture are provided. The binder is formed with a blast-furnace slag composition including 100 mass parts of a mixture of 80-95 mass % of blast-furnace slag fine particles with fineness 3000-13000 cm2/g and 5-20 mass parts of gypsum for a total of 100 mass % and 0.5-1.5 mass parts or 5-45 mass parts of an alkaline stimulant. Such concrete compositions can maintain superior operability by reducing the discharged amount of carbon dioxide and the decrease with time in fluidity and air content of the prepared concrete compositions. They can also reduce the drying shrinkage of the obtained hardened objects and allow the obtained hardened objects to manifest necessary strength.