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公开(公告)号：JPH0363748B2
公开(公告)日：1991-10-02
申请号：JP3572982
申请日：1982-03-09
发明人： YAMAZAKI HIROSHI , TOKITO KOJI , TERADA SADAJI
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公开(公告)号：JPH033217B2
公开(公告)日：1991-01-18
申请号：JP6396881
申请日：1981-04-30
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公开(公告)号：JPS5918697B2
公开(公告)日：1984-04-28
申请号：JP11882580
申请日：1980-08-27
发明人： TAMAKI KYOSHI , MURATA HIDENORI , TERADA SADAJI , WADA TSUNEO , MATSUBARA AKITOSHI , TAKAGIWA HIROYUKI
CPC分类号： G03G9/09708 , G03G9/0806 , G03G9/08793
摘要： A process for manufacturing towers and their use in developing an electrostatically charged image comprising polymerized grains formed by the suspension polymerization of an alpha-beta unsaturated polymeric monomer or monomers in the presence of a dispersion stabilizer selected from the group consisting of aluminum hydroxide, ferric hydroxide titanium hydroxide and thorium hydroxide.
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公开(公告)号：JPS5914748B2
公开(公告)日：1984-04-05
申请号：JP18697480
申请日：1980-12-30
发明人： MATSUBARA AKITOSHI , TAMAKI KYOSHI , MURATA HIDENORI , TERADA SADAJI , TAKAGIWA HIROYUKI , WADA TSUNEO
CPC分类号： G03G9/0819 , G03G9/0827
摘要： PURPOSE:To obtain a titled toner preventing offset phenomenon, having superior resolution and sharpness, and restraining fog, by adding a resin consisting of components having high and low specified molecular weights. CONSTITUTION:An alpha,beta-unsaturated ethylenical monomer is polymerized in an aqueous medium to give a higher polymer of >=150,000mol.wt. A polymerization composition consisting of an alpha,beta-unsaturated ethylenical monomer, said higher polymer, a colorant, a charge controller, a polymerization initiator, etc. is suspended by stirring the mixture at a speed as high as 3,000-10,000 rotational frequency in presence of a dispersion stabilizer, the agitation speed is lowered to 100-800 rotational frequency to polymerize it at 40-85 deg.C, resulting in forming a polymer composed of spherical particles having a ratio of longer diameter (a)/shorter diameter (b) as follows: 1.00 =70wt%, and consisting of 5-50wt% higher molecular weight polymer component and 95-5wt% lower molecular weight polymer component having =3.5. This resin is used for the toner in the title.
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公开(公告)号：JPS5872155A
公开(公告)日：1983-04-30
申请号：JP17013981
申请日：1981-10-26
发明人： TAMAKI KIYOSHI , MURATA HIDENORI , TERADA SADAJI
摘要： PURPOSE:To obtain a toner which does not contaminate a fixing roller, by using a binder consisting essentially of a resin having wide molecular weight distribution in which vinyl monomer is polymerized by using a polymerization initiator having >=2 polymerization initiating seeds in one molecule and adding a physical property modifier, etc. to this binder. CONSTITUTION:In the presence of a polymerization initiator expressed by a formula (R1 denotes H, (substd.) alkyl and acyl R2 denotes (substd.) alkyl, alkyne, acyl, allyl, tolyl, cyclohexyl and alkylester having bivalent bonding group), vinyl monomer such as styrene and (meth)acrylic acid ester is homocopolymerized or copolymerized at a proper ratio to obtain a polymer. A toner contg. physical property modifiers such as coloring agents and an offset preventing agents (polyolefin and fatty acid metallic salt, etc. and a binder consisting essentially of this polymer is manufactured. The obtained toner does not generate offset phenomena on a heating and fixing roler, etc., and it is not necessary to supply the offset preventing liquid to the fixing roller.
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公开(公告)号：JPS5862656A
公开(公告)日：1983-04-14
申请号：JP16028781
申请日：1981-10-09
发明人： YAMAZAKI HIROSHI , TOKITOU KOUJI , TERADA SADAJI
摘要： PURPOSE:To obtain a pressure fixing toner having uniform grain size and high resolving power by dispersing and suspending oil drop consisting of coloring agent, a polymerizable monomer and a material which is liquid at an ordinary temp. in an aq. system then polymerizing the monomer thereby forming the outside wall of suspended particle. CONSTITUTION:In a process for production of a pressure fixing toner, a polymerizable monomer which is liquid or powder is mixed and dissolved in a material which is liquid at an ordinary temp. The resultant soln. and coloring agent are mixed. and the compsn. is suspended and dispersed in a dispersion medium, thereby pulverizing the compsn. While the fine particles are suspended and dispersed, the reacting conditions for the polymerizable monomer are set, and the polymerizable monomer is polymerized to form an insoluble polymer in the liquid material and to form the outside wall of the suspended particle whereby the liquid material is covered. Thus the pressure fixing toner which has uniform grain size and high resolving power, does not cause any inconvenience such as flocculation on long-term storage and sticks less on the surface of photoreceptors is easily produced.
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公开(公告)号：JPS5837650A
公开(公告)日：1983-03-04
申请号：JP12477881
申请日：1981-08-11
发明人： MURATA HIDENORI , TAMAKI KIYOSHI , TERADA SADAJI
IPC分类号： C08L1/00 , C08L7/00 , C08L21/00 , C08L23/00 , C08L27/00 , C08L33/00 , C08L33/02 , C08L57/00 , C08L101/00 , C09C3/00 , C09C3/10 , G03G9/08 , G03G9/087
摘要： PURPOSE:To obtain a dry type toner for developing an electrostatic image capable of favorable fixing with a heating roller without causing offset phenomenon, by adding a vinyl type resin obtained by polymerizing its monomer in the presence of plural polymerization initiators different in half-life, and a mold releasing agent. CONSTITUTION:An intended electrostatic image developing toner contains a mold releasing agent, such as polyolefin, polysiloxane-aliphatic acid, or synthetic paraffin, and a polymer obtained by polymerizing in suspension or the like a vinyl monomer in the presence of a combination of polymerization initiators selected from a longer 70 deg.C-half-life (tauA) initiator, such as benzoyl peroxide, and a shorter 70 deg.C-half-life (tauB) initiator, such as 2,2'-azobis-4-methoxy-2,4-dimethyl-valeronitrile so as to control tauA/tauB to 10-10 .
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公开(公告)号：JPS5793354A
公开(公告)日：1982-06-10
申请号：JP16905580
申请日：1980-12-02
发明人： YAMAZAKI HIROSHI , USAGAWA YASUSHI , TERADA SADAJI , WADA TSUNEO
摘要： PURPOSE:To obtain the titled carrier not sticking to a toner and undergoing no deterioration in the characteristics over a long term by forming a coating layer consisting of a specified organotitanium coupling agent and resin on an inorg. core material for a carrier. CONSTITUTION:An organotitanium coupling agent represented by formulaI, II, III or IV (where each or R1 and R2 is 3-24C alkyl, aryl alkenyl or cycloalkyl; X is the group of formula V, VI or VII; X' is the group of formula V; L is an acetylacetonate group; n is 1-3; m is 1 or 2; p is 1 or 0; and q is 4-20) is used. A carrier is obtd. by coating a core material such as glass powder or iron powder having about 30-1,000mum grain size with about 0.1-10wt% said coupling agent to the total amount of the resulting carrier and about 0.1-10wt% resin to the total amount of the carrier. The preferred glass transition temp. of the resin is >=about 60 deg.C.
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公开(公告)号：JPS5745558A
公开(公告)日：1982-03-15
申请号：JP12142880
申请日：1980-09-01
发明人： MURATA HIDENORI , TAMAKI KIYOSHI , MATSUBARA AKITOSHI , TERADA SADAJI , TAKAGIWA HIROYUKI , WADA TSUNEO
CPC分类号： G03G9/093
摘要： PURPOSE:To obtain a titled toner of superior frictional charging characteristics, moisture resistance, etc. by dispersing the nuclear particles formed by polymn. into an aqueous latex soln., adding a water soluble inorg. salt, and allowing fine particles to settle on the surfaces of the nuclear particles thereby forming coating layers. CONSTITUTION:A composition consisting of a polymerizable monomer such as styrene, vinyl chloride, ethyl acrylate or the like and a coloring agent or the like is dispersed and suspended in an aqueous dispersion medium in which a dispersion stabilizer (e.g.; gelatin, polyvinyl alcohol) exists, thence polymn. is effected whereby nuclear particles consisting of spherical grains of about 1-50 micron grain sizes for toners are produced. Thence, the resultant nuclear particles are dispersed in 1-40wt% an aqueous latex soln., and a water soluble inorg. salt (e.g.; magnesium sulfate) is added into this dispersion to allow micro polymer particles to settle on the surfaces of the nuclear particles, whereby coating layers of
摘要翻译： 目的：通过分散由聚合物形成的核粒子获得具有优异的摩擦带电特性，耐湿性等的标题调色剂。 加入水性胶乳溶液中，加入水溶性溶剂。 盐，并且允许细颗粒沉积在核颗粒的表面上，从而形成涂层。 构成：将由可聚合单体如苯乙烯，氯乙烯，丙烯酸乙酯等和着色剂等组成的组合物分散并悬浮在水分散介质中，其中分散稳定剂（例如明胶，聚乙烯醇） 存在，因此是聚合。 由此产生由用于调色剂的约1-50微米粒度的球形颗粒组成的核粒子。 因此，所得到的核颗粒分散在水性胶乳溶液的1-40重量％和水溶性的溶剂中。 将盐（例如硫酸镁）加入到该分散体中以使微聚合物颗粒沉降在核颗粒的表面上，由此形成膜厚<= 100微米的涂层，并且用于静电荷图像显影的预期调色剂为 获得。
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10.发明专利
公开(公告)号：JPS5742052A
公开(公告)日：1982-03-09
申请号：JP11882580
申请日：1980-08-27
发明人： TAMAKI KIYOSHI , MURATA HIDENORI , TERADA SADAJI , WADA TSUNEO , MATSUBARA AKITOSHI , TAKAGIWA HIROYUKI
CPC分类号： G03G9/09708 , G03G9/0806 , G03G9/08793
摘要： PURPOSE: To improve image density, developability and moistureproof and to obtain a toner free from offset characteristic by causing suspension polymn. of a monomer in the presence of a dispersion stabilizer having zeta potential above specific values and an anionic surfactant.
CONSTITUTION: A monomer such as styrene type monomer, (meth) acrylate ester or the like is dispersed in water contg. a dispersion stabilizer such as Fe(OH)
3 or Al(OH)
3 of ≥29mV zeta potential at about 0.01W10wt% based on the weight of the monomer, and an anionic surfactant such as sodium dodecylbenzensulfonate, sodium oleate or the like at 0.001W0.10wt% based on the weight of the dispersion medium and is subjected to suspension polymn. After the end of the polymn. by this work, the dispersion stabilizer is easily rinsed off from the polymer particles by dilute acid treatment. Hence, the occurrence of variation in developability with humidity of the toner owing to the remaining of the dispersion stabilizer is obviated and the toner by which always stable images are obtained is produced.
COPYRIGHT: (C)1982,JPO&Japio摘要翻译： 目的：提高图像密度，显影性和防潮性，并通过引起悬浮聚合获得无偏移特性的调色剂。 的单体在具有高于特定值的ζ电位的分散稳定剂和阴离子表面活性剂存在下进行。 构成：将苯乙烯类单体，（甲基）丙烯酸酯等单体分散在水中。 约0.01-10重量％的Fe（OH）3或Al（OH）3的分散稳定剂，基于单体的重量，并且阴离子表面活性剂如十二烷基苯磺酸钠，油酸钠等 基于分散介质的重量为0.001-0.10重量％，并进行悬浮聚合。 聚合结束后。 通过这种工作，通过稀酸处理容易地从聚合物颗粒中冲洗分散稳定剂。 因此，消除了由于分散稳定剂的剩余而导致的调色剂的湿度的显影性的变化，并且产生了获得总是稳定的图像的调色剂。
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