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91. 发明专利

JP2004139003A Toner for developing electrostatic image, developer, process for forming image, and image forming apparatus 有权
公开(公告)号：JP2004139003A
公开(公告)日：2004-05-13
申请号：JP2003013349
申请日：2003-01-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUGIURA HIDEKI , MOCHIZUKI MASARU , IWAMOTO YASUTAKA , UMEMURA KAZUHIKO , ASAHINA YASUO , NAKAYAMA SHINYA
IPC分类号： G03G9/08 , G03G9/087 , G03G9/093 , G03G9/10
CPC分类号： G03G9/08755 , G03G9/0821 , G03G9/08793 , G03G9/093 , G03G9/09328
摘要： PROBLEM TO BE SOLVED: To provide spherical toners having both good fixability and low-temperature fixability, free of deterioration of charge properties, flowability, transferability and fixability, and excellent in preservability. SOLUTION: In the toners containing at least a nitrogen-containing polyester resin and a colorant, the S/V of the amount (surface amount: S) of nitrogen present at the surface of each toner to the amount (V) of nitrogen present in the entire toner is from 1.2 to 10. Additionally, the nitrogen-containing polyester resin is preferably a polyester resin modified by urea bonds, and it is preferred that the toner particles are substantially spherical having an average sphericity E of from 0.90 to 0.99. COPYRIGHT: (C)2004,JPO

92. 发明专利

JP2004109344A Electrostatic charge image developing toner 审中-公开
公开(公告)号：JP2004109344A
公开(公告)日：2004-04-08
申请号：JP2002270150
申请日：2002-09-17
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： TAMURA TOMOMI , IWAMOTO YASUTAKA , ASAHINA YASUO , MOCHIZUKI MASARU , UMEMURA KAZUHIKO , MASUDA MINORU , SUGIURA HIDEKI
IPC分类号： G03G9/08 , G03G9/087 , G03G15/02 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an electrostatic charge image developing toner which does not generate ozone odors and reduces the contamination of a contact member with the toner by a contact charging system. SOLUTION: The toner is used for an image forming method having the steps of: electrostatically charging a photoreceptor by a contact charging member which has a surface resistance 20 to 160 MΩ and is biased; forming an electrostatic latent image on the charged photoreceptor; developing the electrostatic latent image by the toner containing at least a binder resin and colorant; transferring the toner image on the photoreceptor to a transfer material; and heat fixing the toner image on the transfer material. The binder resin contains: at least a polyol resin (I) synthesized by reacting an epoxy resin (a), dihydric phenol (b), and a resin (c) with each other, the resin (c) being obtained by reacting an alkylene oxide addition product of the dihydric phenol with polyvalent carboxylic acid; and a graft polymer (II) consisting of a vinyl based monomer having a solubility parameter (SP) value ranging from 10.6 to 12.6 as ingredients. COPYRIGHT: (C)2004,JPO

93. 发明专利

JP2004085997A Electrostatic charge image developing yellow toner 审中-公开
公开(公告)号：JP2004085997A
公开(公告)日：2004-03-18
申请号：JP2002248612
申请日：2002-08-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOIKE TAKAYUKI , MOCHIZUKI MASARU , IWAMOTO YASUTAKA
IPC分类号： G03G9/087 , G03G9/09 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a yellow toner which permits omission of a classification step heretofore necessary for the conventional triturated toners for a full-color copying machine, is provided with good transferability by its nearly spherical shape, satisfies cleanability, has a small grain size and narrow grain size distribution for making a significant contribution to high resolution and high image quality excellent in gradation characteristic, has good dispersibility of coloring matter, is high in tinting strength, makes high image density obtainable, has high saturation and excellent transparency, has excellent light fastness, is not faded in colors, and makes electrostatic chargeability stably obtainable for a long period of time. SOLUTION: The electrostatic charge image developing yellow toner contains at least coloring matter obtained by dissolving or dispersing a toner composition containing a urea bondable denatured polyester-based resin in an organic solvent, by causing the addition polymerization of the dissolved matter or dispersion while emulsifying the same in an aqueous medium, by removing the solvent of the resultant dispersion and cleaning the dispersion. The coloring matter is the compound expressed by Formula (1). COPYRIGHT: (C)2004,JPO

94. 发明专利

JP2004077786A Electrostatic charge image developing yellow toner 审中-公开
公开(公告)号：JP2004077786A
公开(公告)日：2004-03-11
申请号：JP2002237954
申请日：2002-08-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MOCHIZUKI MASARU , IWAMOTO YASUTAKA , KOIKE TAKAYUKI
IPC分类号： G03G9/09 , G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide an electrostatic charge image developing yellow toner excellent in stability of a charged state over a prolonged period of time, free of surface fogging and toner scattering, giving high image density as a yellow toner for full colors, excellent in saturation, transparency, light resistance and fading resistance, and excellent also in cleanability, transferability and graininess and to provide a developer comprising the toner, a color image forming method using the toner and a color image forming apparatus with the toner loaded threin. SOLUTION: The electrostatic charge image developing yellow toner is a toner containing at least a colorant obtained by dissolving a toner compound containing a polyester resin modified for allowing urea bonding in an organic solvent, allowing a polyaddition reaction to take place while emulsifying the resulting solution of the toner composition in an aqueous medium, removing the solvent of the resulting dispersion solution and carrying out washing, wherein the colorant is a compound represented by formula (I). COPYRIGHT: (C)2004,JPO

95. 发明专利

JP2003280266A Electrostatic charge image developing toner, developer, and method and device for forming image 有权
标题翻译：静电充电图像开发墨粉，开发者和形成图像的方法和装置
公开(公告)号：JP2003280266A
公开(公告)日：2003-10-02
申请号：JP2002079476
申请日：2002-03-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MOCHIZUKI MASARU , IWAMOTO YASUTAKA , KOIKE TAKAYUKI
IPC分类号： G03G9/087 , G03G9/09 , G03G9/097
摘要： PROBLEM TO BE SOLVED: To provide an electrostatic charge image developing toner containing an electrification control agent uniformly dispersed in the toner particles and giving stable electrification property for a long time, and to provide a developer using the toner, a method for forming an image by using the developer, a container filled with the developer, and an image forming device installed with the container. SOLUTION: The toner contains at least a colorant and an electrification controlling agent and is obtained by dissolving a toner composition containing a modified polyester resin which can form an urea bond as a binder resin in an organic solvent, subjecting the solution to polymerization addition reaction in an aqueous medium, removing the solvent from the dispersion liquid and cleaning particles. The toner contains a calixarene compound as the electrification controlling agent. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供一种静电荷图像显影调色剂，其含有均匀分散在调色剂颗粒中的带电控制剂并且长时间地提供稳定的起电性，并且使用调色剂提供显影剂，形成方法通过使用显影剂的图像，填充有显影剂的容器和安装有容器的图像形成装置。调色剂含有至少一种着色剂和带电控制剂，并且通过将含有可以形成脲键的改性聚酯树脂作为粘合剂树脂的调色剂组合物溶解在有机溶剂中，使溶液进行聚合而获得在水性介质中的加成反应，从分散液中除去溶剂和清洗颗粒。调色剂含有杯芳烃化合物作为带电控制剂。版权所有（C）2004，JPO

96. 发明专利

JP2013068946A Toner and method for manufacturing toner 审中-公开
标题翻译：调色剂及其制造方法
公开(公告)号：JP2013068946A
公开(公告)日：2013-04-18
申请号：JP2012196923
申请日：2012-09-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI YOSUKE , YUASA SAYAKA , KOJIMA SAYURI , KADOTA TAKAHIRO , IWAMOTO YASUTAKA
IPC分类号： G03G9/087
CPC分类号： G03G9/135 , G03G9/0804 , G03G9/081 , G03G9/08755 , G03G9/08791 , G03G9/08797
摘要： PROBLEM TO BE SOLVED: To provide a toner having excellent electrification characteristics with long-term stability, and an efficient method for manufacturing the toner.SOLUTION: A toner is obtained by washing a dispersion slurry obtained from a dispersion liquid or emulsion of an oil-phase aqueous medium containing a toner material. The dispersion liquid or emulsion of the aqueous medium contains a cellulose dispersion stabilizer. After cellulase is added to the dispersion slurry, the slurry is washed.
摘要翻译：要解决的问题：提供具有优异的起电特性和长期稳定性的调色剂和用于制造调色剂的有效方法。解决方案：通过洗涤由包含调色剂材料的油相水性介质的分散液或乳液获得的分散浆料获得调色剂。水性介质的分散液或乳液含有纤维素分散稳定剂。将纤维素酶加入到分散浆液中后，将浆液洗涤。版权所有（C）2013，JPO＆INPIT

97. 发明专利

JP2013003196A Toner for developing electrostatic charge image 审中-公开
标题翻译：用于开发静电荷图像的调色剂
公开(公告)号：JP2013003196A
公开(公告)日：2013-01-07
申请号：JP2011131114
申请日：2011-06-13
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： WATANABE SHINKO , IWAMOTO YASUTAKA , HANATANI SHINYA
IPC分类号： G03G9/08 , G03G9/087 , G03G9/10
摘要： PROBLEM TO BE SOLVED: To provide a toner excellent in storage stability, low-temperature fixability and hot off-set resistance which allows formation of an image with high quality, no stain or no stripe caused by mold release agent or no image defects due to a toner aggregate or the like, and to provide a developer using the toner, a container including the toner and a process cartridge using the toner.SOLUTION: A toner includes at least a binder resin, a pigment and a wax. The wax is a hydrocarbon wax. The ratio of the minor axis to the major axis of the wax domain in a toner particle is 2 or more. A content of the toner particle satisfying 0.5
摘要翻译：要解决的问题：提供存储稳定性，低温定影性和耐热脱模性优异的调色剂，能够形成高质量的图像，无脱模剂或无图像引起的污渍或无条纹由调色剂骨料等引起的缺陷，以及提供使用调色剂的显影剂，包含调色剂的容器和使用该调色剂的处理盒。调色剂：至少包含粘合剂树脂，颜料和蜡。蜡是烃蜡。调色剂颗粒中蜡区域的短轴与长轴的比例为2以上。满足0.5

98. 发明专利

JP2012073633A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2012073633A
公开(公告)日：2012-04-12
申请号：JP2011253692
申请日：2011-11-21
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAWADA TOYOSHI , IWAMOTO YASUTAKA , MATSUMOTO KEIKO , YOSHII TAKAYUKI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus with a highly durable fixing device having good bending fatigue resistance and wear resistance, allows fixing at low temperature, gives no abnormal image, and has excellent durability.SOLUTION: (1)The image forming apparatus includes a fixing unit for fixing a toner image onto a recording medium with heat and pressure. The toner that forms the toner image contains at least a polyester resin having crystallinity (crystalline polyester) and a noncrystalline resin, substantially incompatible with each other, in the binder resin. The fixing unit includes a fixing rotatory body and a pressurizing rotatory body, and the fixing rotatory body and/or the pressurizing rotatory body is in a belt form. The fixing rotatory body has a surface layer formed on the outer circumference surface thereof, the surface layer comprising a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin (PFA) having a ratio of oxygen atoms/carbon atoms in a molecular chain of 1/60 or more.
摘要翻译：要解决的问题：为了提供具有良好的抗弯曲疲劳性和耐磨性的耐用性高的定影装置的图像形成装置，可以在低温下定影，不产生异常图像，并且具有优异的耐久性。（1）图像形成装置包括用于将调色剂图像定影到具有热和压力的记录介质上的定影单元。形成调色剂图像的调色剂在粘合剂树脂中至少含有具有结晶性的聚酯树脂（结晶性聚酯）和基本上不相容的非结晶性树脂。固定单元包括固定旋转体和加压旋转体，固定旋转体和/或加压旋转体为带状。定影旋转体具有形成在其外周面上的表层，表面层包含分子链中氧原子/碳原子数比为1/60以上的四氟乙烯 - 全氟烷基乙烯基醚共聚物树脂（PFA）。版权所有（C）2012，JPO＆INPIT

99. 发明专利

JP2012008510A Toner, process cartridge, image forming method and production method of toner 有权
标题翻译：调色剂，过程盒，图像形成方法和调色剂的生产方法
公开(公告)号：JP2012008510A
公开(公告)日：2012-01-12
申请号：JP2010173836
申请日：2010-08-02
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IWAMOTO YASUTAKA , WATANABE SHINKO , NAGATOMO NOBUYASU , CHU BING , KOJIMA TOMOYUKI , WATANABE MASAKI , SHIMODA NAOTO , SHIBA MASAKATA
IPC分类号： G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide a toner having excellent release property during low temperature fixing, causing little filming, achieving both of low temperature fixability and heat-resistant storage property, reducing a volatile content during fixing, and achieving both of low temperature fixability and separation property of a sheet from a roller during high-temperature fixing.SOLUTION: The toner is obtained through a step of emulsifying or dispersing a toner material liquid comprising liquid that contains materials constituting the toner, in an aqueous medium containing a surfactant. The toner material liquid contains a binder, colorant, and wax, having a molecular chain composed of only C-H bonds and C-C bonds. The wax shows a mass reduction of 10 mass% or less at 165°C. The proportion of the whole wax in the toner particles measured by a DSC method ranges from 1 mass% to 8 mass%. A ratio Sbet/SF of the BET specific surface area (Sbet) of the toner to an average circularity (SF) of the toner is 1.0 m/g or more and less than 3.6 m/g.
摘要翻译：要解决的问题：为了提供在低温定影期间具有优异的剥离性的调色剂，几乎没有成膜，同时实现低温定影性和耐热性储存性，降低固定期间的挥发物含量，同时实现低在高温定影期间片材与辊的温度定影性和分离性能。解决方案：通过将包含含有构成调色剂的材料的液体的调色剂材料液体在含有表面活性剂的水性介质中乳化或分散的步骤获得调色剂。调色剂材料液体含有仅具有C-H键和C-C键的分子链的粘合剂，着色剂和蜡。该蜡在165℃下的质量降低为10质量％以下。通过DSC测定的调色剂颗粒中的全部蜡的比例为1质量％〜8质量％。调色剂的BET比表面积（Sbet）与调色剂的平均圆形度（SF）之比Sbet / SF为1.0m / SP以上，小于等于2 3.6 m 2 / g。版权所有（C）2012，JPO＆INPIT

100. 发明专利

JP2010097201A Toner and image forming method 审中-公开
标题翻译：调色剂和图像形成方法
公开(公告)号：JP2010097201A
公开(公告)日：2010-04-30
申请号：JP2009206566
申请日：2009-09-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAGATOMO NOBUYASU , SASAKI FUMIHIRO , UCHINOKURA OSAMU , KOJIMA TOMOYUKI , IWAMOTO YASUTAKA , SHU HYO , WATANABE SHINKO , WATANABE MASAKI
IPC分类号： G03G9/08 , G03G9/087 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To provide a toner and an image forming method which suppress problematic filming and provide an image with high image quality and temporal stability, even in an image forming apparatus with a two-component development system adopting a non-contact AC roller charging system excellent in charge uniformity and charge controllability. SOLUTION: The toner is obtained by externally adding an external additive to a base toner comprising at least a resin and a colorant, wherein the toner contains composite fine particles comprising at least inorganic fine particles and a lubricant. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决问题的方案为了提供一种抑制有问题的成膜并提供具有高图像质量和时间稳定性的图像的调色剂和图像形成方法，即使在采用非成像方式的双组分显影系统的图像形成装置中，接触式AC辊充电系统具有优异的电荷均匀性和电荷可控性。解决方案：调色剂通过向包含至少一种树脂和着色剂的基础调色剂外部添加外部添加剂而获得，其中调色剂含有至少包含无机细颗粒和润滑剂的复合细颗粒。版权所有（C）2010，JPO＆INPIT

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