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    • 1. 发明专利
    • Toner, developer, toner-containing container, process cartridge, image forming apparatus, and image forming method
    • 调色剂,开发商,含有容纳容器,过程盒,图像形成装置和图像形成方法
    • JP2008262166A
    • 2008-10-30
    • JP2008037932
    • 2008-02-19
    • Ricoh Co LtdSanyo Chem Ind Ltd三洋化成工業株式会社株式会社リコー
    • YAMADA MASAHIDEAWAMURA JUNICHISUZUKI TOMOMISESHIMO TAKUYASAWADA TOYOSHIYAHIRO SHUHEIIWATA SHOWA
    • G03G9/087G03G9/08
    • PROBLEM TO BE SOLVED: To provide a toner capable of satisfying both of excellent low-temperature fixability and offset resistance and capable of forming a good high-definition image, and a developer, a toner-containing container, a process cartridge, an image forming apparatus and an image forming method using the toner. SOLUTION: The toner for developing an electrostatic charge image is obtained as follows; at least an active hydrogen group-containing compound (compound A), a polymer capable of reacting with the compound A (polymer B), a colorant and a release agent are dissolved or dispersed in an organic solvent and further dispersed in an aqueous medium to prepare a dispersion, the organic solvent is removed after or while reacting the compound A with the polymer B, and washing and drying are carried out, wherein the polymer B is a prepolymer terminated by NCO, the molar ratio between OH groups of a precursor polymer of the prepolymer and NCO groups of a diisocyanate for NCO termination, NCO/OH is 2.0-2.3, and the prepolymer has a viscosity of 1,500-5,000 mPa s in the case of a solid content of 50%. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了提供能够满足优异的低温定影性和抗偏移性并且能够形成良好的高清晰度图像的调色剂,以及显影剂,含调色剂的容器,处理盒, 图像形成装置和使用该调色剂的图像形成方法。

      解决方案:用于显影静电荷图像的调色剂如下获得; 至少含有活性氢基团的化合物(化合物A),能够与化合物A(聚合物B)反应的聚合物,着色剂和脱模剂溶解或分散在有机溶剂中并进一步分散在水性介质中 制备分散体,在使化合物A与聚合物B反应之后除去有机溶剂,并进行洗涤和干燥,其中聚合物B是由NCO 3封端的预聚物,前体聚合物的OH基团之间的摩尔比 的预聚物和用于NCO终止的二异氰酸酯的NCO基团,NCO / OH为2.0-2.3,并且在固体含量为50%的情况下,预聚物的粘度为1,500-5,000mPa·s。 版权所有(C)2009,JPO&INPIT

    • 2. 发明专利
    • Toner for static charge pattern development, and developer
    • 静态图案模式的开发者和开发者
    • JP2005234233A
    • 2005-09-02
    • JP2004043393
    • 2004-02-19
    • Ricoh Co Ltd株式会社リコー
    • SAITO TAKUYAYAMASHITA YUJIWATANABE YOICHIROSUGIYAMA KOSHINOTANI SHINJIWATANABE SHINKOKANO TOSHIHIKOTAKIGAWA TADAONODA HIDETOSHIYAHIRO SHUHEI
    • G03G9/08G03G9/087
    • PROBLEM TO BE SOLVED: To provide toner for static charge pattern development and a developer not contaminating the fixing units and the images but capable of improving cleaning while maintaining preferable image density less spoiling the print surfaces even when repeatedly used to print many sheets for a long time and forming high-quality images with sharp static charge distribution, being applicable to low-temperature fixing units system with superior offset resistance. SOLUTION: The toner of this invention is manufactured by dissolving and/or dispersing at least a polymer, coloring agents, a mold releasing agent and one or more kinds of inorganic additives in an organic solvent. The toner is obtained by removing the organic solvent after dispersing the dissolved solution or the dispersed liquid in an aquatic medium, cleaning and drying. The inorganic additive is composed of two or more rigid bodies and a link connecting them. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供用于静电荷图案显影的调色剂和不污染定影单元和图像的显影剂,但是即使在重复使用来打印许多张片时也能够改善清洁,同时保持优选的图像浓度而不损害打印面 长时间形成具有清晰静电荷分布的高质量图像,适用于具有优异抗偏移性的低温定影单元系统。 解决方案:通过将至少一种聚合物,着色剂,脱模剂和一种或多种无机添加剂溶解和/或分散在有机溶剂中来制造本发明的调色剂。 通过在将溶解的溶液或分散液体分散在水性介质中进行清洗和干燥后除去有机溶剂来获得调色剂。 无机添加剂由两个或更多个刚体和连接它们的链节组成。 版权所有(C)2005,JPO&NCIPI
    • 4. 发明专利
    • Toner, developer using toner, container containing toner, process cartridge, image forming apparatus and method
    • 调色剂,使用调色剂,含有调色剂的容器,过程盒,图像形成装置和方法
    • JP2008233360A
    • 2008-10-02
    • JP2007070637
    • 2007-03-19
    • Ricoh Co LtdSanyo Chem Ind Ltd三洋化成工業株式会社株式会社リコー
    • UCHINOKURA OSAMUWATANABE SHINKOYAMADA MASAHIDESAITO AKINORIAWAMURA JUNICHISUZUKI TOMOMIYAHIRO SHUHEIIWATA SHOWA
    • G03G9/087C08G18/10G03G15/08
    • PROBLEM TO BE SOLVED: To provide a toner achieving both of excellent low temperature fixing property and offset resistance. SOLUTION: The toner is granulated in an aqueous medium and contains at least two kinds of binder resins, wherein as a binder resin, a polyester resin having an increased molecular weight due to the reaction of a modified polyester prepolymer having a reactive functional group at the molecular end during the aqueous granulation is contained, wherein the modified polyester prepolymer is produced by using an intermediate polyester having a polyester skeleton synthesized from a diester component having a -OH group at the molecular end which is synthesized from a diol compound and a monomer having a dicarboxylic acid, the diol compound is a liquid at 50°C (1 atm) and has a boiling point of 180 to 250°C, and the intermediate polyester has the number average molecular weight of 3,000 to 10,000 and has a functional group number f of 2.05 to 2.55 obtained from the hydroxyl value and the molecular weight. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种具有优异的低温定影性和抗偏移性的调色剂。 调色剂在水性介质中造粒,并含有至少两种粘合剂树脂,其中作为粘合剂树脂,由于具有反应性官能团的改性聚酯预聚物的反应而具有分子量增加的聚酯树脂 包含在水分造粒期间在分子末端的基团,其中改性聚酯预聚物是通过使用具有由二醇化合物合成的分子末端具有-OH基团的二酯组分合成的聚酯骨架的中间体聚酯制备的, 具有二羧酸的单体,二醇化合物为50℃(1atm)的液体,沸点为180〜250℃,中间体聚酯的数均分子量为3000〜10,000,具有 由羟值和分子量得到的官能团数f为2.05〜2.55。 版权所有(C)2009,JPO&INPIT
    • 5. 发明专利
    • Resin particle for toner
    • 树脂颗粒
    • JP2010079318A
    • 2010-04-08
    • JP2010005680
    • 2010-01-14
    • Ricoh Co LtdSanyo Chem Ind Ltd三洋化成工業株式会社株式会社リコー
    • TAKIGAWA TADAOKINSHO TOSHIHIKONODA HIDETOSHIYAHIRO SHUHEIICHIKAWA TOMOYUKIMOCHIZUKI MASARUIWAMOTO YASUTAKASUGIURA HIDEKI
    • G03G9/087B01J2/06B01J13/14C08F2/44G03G9/08G03G9/097
    • G03G9/097B01J2/06B01J13/14C08F2/44C08L83/04G03G9/0819G03G9/0827Y10T428/2984Y10T428/2991Y10T428/2998C08L2666/02
    • PROBLEM TO BE SOLVED: To provide a resin particle for toner, excellent in blade cleaning property and having a wide fixation temperature range. SOLUTION: The resin particle for toner includes a resin (a) and a filler (b), and have a concavo-convex feature on the particle surface. The particle has an outer shell layer (S) having the filler (b) inside from the surface and at least a part (b*) of the filler (b) aggregating close to the surface. The outer shell layer (S) is at least 0.01 μm thick and has a thickness that is a half or less of the maximum inscribed circle radius of the particle cross section. The particle has a volume average particle diameter of from 3 to 10 μm, and a shape factor (SF-2) of from 110 to 137. The filler (b) is an inorganic filler treated with a surface treating agent (d) selected from a group consisting of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent and a tertiary amine compound. The content of the filler (b) is from 0.01 to 50 mass%. The resin (a) includes a urethane resin, an epoxy resin, a vinyl resin or an ester resin. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种用于调色剂的树脂颗粒,具有优异的刮刀清洁性能和较宽的定影温度范围。 解决方案:用于调色剂的树脂颗粒包括树脂(a)和填料(b),并且在颗粒表面上具有凹凸特征。 颗粒具有从表面内部具有填料(b)的外壳层(S),并且填料(b)的至少一部分(b *)聚集在表面附近。 外壳层(S)的厚度为0.01μm以上,其厚度为粒子截面的最大内切圆半径的一半以下。 粒子的体积平均粒径为3〜10μm,形状因子(SF-2)为110〜137。填料(b)是用表面处理剂(d)处理的无机填料, 由硅烷偶联剂,钛酸酯偶联剂,铝酸酯偶联剂和叔胺化合物组成的组。 填料(b)的含量为0.01〜50质量%。 树脂(a)包括聚氨酯树脂,环氧树脂,乙烯基树脂或酯树脂。 版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • Method of manufacturing image forming particle, image forming particle, process cartridge, and image forming apparatus
    • 图像形成粒子,图像形成粒子,过程盒和图像形成装置的方法
    • JP2006208421A
    • 2006-08-10
    • JP2005016355
    • 2005-01-25
    • Ricoh Co LtdSanyo Chem Ind Ltd三洋化成工業株式会社株式会社リコー
    • SAITO TAKUYAMATSUOKA SONOONAKAYAMA SHINYATAKIGAWA TADAOYAHIRO SHUHEINODA HIDETOSHI
    • G03G9/087G03G9/08G03G15/08G03G15/20
    • PROBLEM TO BE SOLVED: To provide such excellent image forming particles which eliminate the influence of electrostatic chargeability due to use of a surfactant in the conventional emulsification/dispersion process, and prevent fixing impediment of an electrostatic charge control agent from occurring when the electrostatic charge control agent is stuck and immobilized to the surface by a dry process. SOLUTION: The method for manufacturing the image forming particles by dissolving or dispersing at least a binder resin, a colorant and silica in an organic solvent and granulating the particles in an aqueous medium prepared by removing the organic solvent from the solution or dispersion liquid has an alkaline cleaning process in which the image forming particles granulated in the aqueous medium are dried after cleaning and the at least the first state of the cleaning is pH=8 to 13, and an acid cleaning process in which the second state of the dispersion liquid in the image forming particles is pH=2 to 6. The acid cleaning process is a post process of the alkaline cleaning process. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供这样优异的图像形成颗粒,其消除了在常规乳化/分散过程中由于使用表面活性剂而导致的静电电荷的影响,并且防止静电电荷控制剂的固定阻碍发生在 静电荷控制剂通过干法粘合并固定在表面上。 解决方案:通过将至少粘合剂树脂,着色剂和二氧化硅溶解或分散在有机溶剂中并将颗粒颗粒化在通过从溶液或分散体中除去有机溶剂制备的水性介质中来制造成像颗粒的方法 液体具有碱性清洗方法,其中在水性介质中造粒的图像形成颗粒在清洁之后被干燥,并且至少第一清洁状态为pH = 8至13,以及酸清洗过程,其中第二状态 成像颗粒中的分散液为pH = 2〜6。酸清洗工序为碱性清洗工序。 版权所有(C)2006,JPO&NCIPI
    • 8. 发明专利
    • Aqueous medium for toner manufacturing, method for manufacturing toner using the aqueous medium, and the toner
    • 用于调色剂制造的水性介质,使用水性介质制造调色剂的方法和调色剂
    • JP2011145508A
    • 2011-07-28
    • JP2010006679
    • 2010-01-15
    • Ricoh Co LtdSanyo Chem Ind Ltd三洋化成工業株式会社株式会社リコー
    • MATSUMURA SAYURIKADOTA TAKAHIROCHIBA SUSUMUSANJO AYUMIYAHIRO SHUHEI
    • G03G9/087
    • PROBLEM TO BE SOLVED: To provide an aqueous medium which can manufacture an inexpensive toner for static charge image development which includes a low temperature fixing active component, exhibits excellent low temperature fixing property, and has favorable heat resistance storage stability, and to provide a method of manufacturing the toner using the same, and the toner.
      SOLUTION: The used aqueous medium (II) is obtained by separating organic solvent and granulated toner mother particles from oil phase-aqueous medium dispersion liquid in which the oil phase of the organic solvent including at least a binder resin and/or its precursor and a colorant is dispersed in the aqueous medium (I) in a droplet manner, and the used aqueous medium (II) includes a constituent of the organic solvent which is not taken in the granulated toner mother particles and is shifted from the oil phase, and a constituent of the aqueous medium originally existing in the aqueous medium (I), and the organic solvent for manufacturing the toner mother particle including the same component as the oil phase for the next time and after is dispersed in a droplet manner to be used for preparation of the aqueous medium (I) for the oil phase-aqueous medium dispersion liquid for the next time and after for granulating the toner mother particle for the next time and after.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种水性介质,其可以制造用于静电荷图像显影的廉价调色剂,其包括低温定影活性组分,显示出优异的低温定影性能,并且具有良好的耐热储存稳定性,并且 提供使用其制造调色剂的方法和调色剂。 所用的水性介质(II)是通过从油相 - 水介质分散液中分离有机溶剂和造粒调色剂母体颗粒而得到的,其中至少包含粘合剂树脂和/或其粘合剂树脂的有机溶剂的油相 前体和着色剂以液滴方式分散在水性介质(I)中,并且所用的水性介质(II)包括未被置于造粒调色剂母粒中并从油相中偏移的有机溶剂的成分 ,和最初存在于水性介质(I)中的水性介质的组分,并且用于制造包含与下一时间和之后的油相相同成分的调色剂母粒的有机溶剂以液滴方式分散为 用于下一次制备用于油相 - 水介质分散液的水性介质(I),并在下一次和之后对调色剂母粒进行造粒。 版权所有(C)2011,JPO&INPIT
    • 9. 发明专利
    • Method for manufacturing toner for electrostatic charge image development, toner for electrostatic charge image development, developer, image forming apparatus, image forming method, and process cartridge
    • 用于制造静电电荷图像开发的调色剂的方法,用于静电电荷图像开发的调色剂,开发者,图像形成装置,图像形成方法和过程盒
    • JP2006208946A
    • 2006-08-10
    • JP2005023371
    • 2005-01-31
    • Ricoh Co LtdSanyo Chem Ind Ltd三洋化成工業株式会社株式会社リコー
    • MATSUOKA SONOOMOCHIZUKI MASARUSASAKI FUMIHIROUCHINOKURA OSAMUSAITO TAKUYATAKIGAWA TADAOYAHIRO SHUHEINODA HIDETOSHI
    • G03G9/087G03G9/08G03G9/097
    • PROBLEM TO BE SOLVED: To provide a toner responding to an image forming system which requires a higher speed and higher reliability, having high charging ability and little toner portion with weak charges or inverted charges, capable of forming an image with less contamination on a base even after output of images in several ten thousands sheets, hardly causing scattering in an apparatus and resulting picture quality with sufficient image density, and to provide a method for manufacturing the toner. SOLUTION: The method for manufacturing a toner for electrostatic charge image development includes steps of granulating an organic solvent composition containing at least a binder resin and a colorant in an organic solvent in an aqueous medium and then externally adding a charge controlling agent in a wet state, dehydrating and filtering, and drying. A process interval period (t) (hour) from the dehydration and filtration step to the drying step, and a storage environment temperature (T) (°C) of a cake after dehydration in the process interval period satisfy relational formula (1):t≤80e (-0.07T) and/or (2), wherein Δtm defined by tm-t(m-1) represents a time difference on measuring a m-th temperature, and T(t=tm) represents a temperature T at the time tm, and T is in the range of 5≤T COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供一种响应于需要更高速度和更高可靠性的图像形成系统的调色剂,具有高充电能力和小的具有弱电荷或反向电荷的调色剂部分,能够形成具有较少污染的图像 即使在输出几万张图像之后,几乎不会在装置中产生散射,并且产生具有足够图像密度的图像质量,并且提供了制造调色剂的方法。 制造静电荷图像显影用调色剂的方法包括以下步骤:将含有至少粘合剂树脂和着色剂的有机溶剂组合物在有机溶剂中在水性介质中造粒,然后在外部添加电荷控制剂 湿润状态,脱水和过滤,并干燥。 从脱水过滤步骤到干燥步骤的处理间隔时间(t)(小时)和处理间隔期间的脱水后的滤饼的储存环境温度(℃)(℃)满足关系式(1): 其中由tm-t(m-1)定义的Δtm表示测量第m个温度的时间差,T(t) = tm)表示时间tm的温度T,T在5≤T<50的范围内。 版权所有(C)2006,JPO&NCIPI
    • 10. 发明专利
    • Electrostatic charge image developing toner
    • 静电充电图像显影剂
    • JP2006023428A
    • 2006-01-26
    • JP2004200141
    • 2004-07-07
    • Ricoh Co Ltd株式会社リコー
    • SAITO TAKUYAYAMASHITA YUJIWATANABE YOICHIROOTANI SHINJISUGIYAMA KOSHINKANO TOSHIHIKOTAKIGAWA TADAONODA HIDETOSHIYAHIRO SHUHEI
    • G03G9/087G03G9/08
    • PROBLEM TO BE SOLVED: To provide a developer which has improved cleaning properties, and with which, even if many recording papers are repeatedly used over a long period, proper image density can be obtained and the stain of surface is extremely little, further, to provide a developer which has a sharp distribution in an electrostatic charge amount, does not contaminate a charging device, a developing device, a photoreceptor and an intermediate transferring body and can form images of high quality, and to provide a toner which copes with a low temperature fixing system, has satisfactory offset resistance and does not stain a fixing device and images. SOLUTION: The electrostatic charge image developing toner is obtained by dissolving or dispersing at least a resin or a resin precursor comprising a monomer, a coloring agent and a metal oxide and solvent-dispersed body comprising one or more kinds of metal oxides into an organic phase, dispersing the solution or dispersed liquid into a water base medium, thereafter, removing the organic solvent and the water base medium and performing cleaning and drying. The metal oxide and solvent-dispersed body is either a sol body or a wetting gel, and its pH reaches 2 to 6 by equal amount dilution with water. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种具有改进的清洁性能的显影剂,并且即使长时间反复使用许多记录纸,也可以获得适当的图像浓度并且表面的污渍极少, 另外,为了提供一种具有静电荷量分布明显的显影剂,不会使充电装置,显影装置,感光体和中间转印体污染,并且可以形成高质量的图像,并且提供可以处理的调色剂 具有低温定影系统,具有令人满意的抗偏移性,并且不会污染定影装置和图像。 解决方案:静电荷图像显影调色剂通过将至少包含单体,着色剂和金属氧化物的树脂或树脂前体和包含一种或多种金属氧化物的溶剂分散体溶解或分散到 有机相,将溶液或分散液分散在水基介质中,然后除去有机溶剂和水基介质,进行清洗和干燥。 金属氧化物和溶剂分散体是溶胶体或润湿凝胶,其pH通过与水等量稀释至2至6。 版权所有(C)2006,JPO&NCIPI