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101. 发明专利

JP2012189871A Electrophotographic transparent toner and method for producing the same 有权
标题翻译：电子显微镜透明色调剂及其制造方法
公开(公告)号：JP2012189871A
公开(公告)日：2012-10-04
申请号：JP2011054260
申请日：2011-03-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： AOKI MITSUO , NAKAJIMA HISASHI , NAGAYAMA MASASHI , YAMADA SAORI
IPC分类号： G03G9/08 , G03G9/087 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an achromatic electrophotographic transparent toner having excellent low-temperature fixability, hot offset resistance, high gloss, uniform glossiness and heat-resistant storage property and to provide a method for producing the toner.SOLUTION: A method for producing an electrophotographic transparent toner includes: a mixing step of mixing toner raw materials including at least a binder resin, a crystalline polyester resin having a melting point (mp: a peak top value in a first run of DSC) of 80 to 130°C measured by differential scanning calorimetry (DSC) of the crystalline polyester resin, a releasing agent and a lubricant; and a melt-kneading step of melting and kneading the mixture of the toner raw materials obtained in the mixing step, in a kneading machine while controlling the temperature to be equal to or lower than the melting point of the crystalline polyester resin. The achromatic electrophotographic transparent toner is obtained by cooling, pulverizing and classifying the melt-kneaded product obtained in the melt-kneading step.
摘要翻译：要解决的问题：提供具有优异的低温定影性，耐热粘合性，高光泽度，均匀的光泽度和耐热储存性的消色差电子照相透明调色剂，并提供调色剂的制造方法。电解质透明调色剂的制造方法包括：混合调色剂原料至少包含粘合剂树脂，熔点为（mp：第一行中的峰顶值 DSC）为80〜130℃，通过结晶性聚酯树脂，脱模剂和润滑剂的差示扫描量热法（DSC）测定; 以及将捏合机中获得的调色剂原料的混合物在捏合机中熔融捏合的熔融捏合步骤，同时控制该温度等于或低于结晶聚酯树脂的熔点。通过对在熔融捏合步骤中获得的熔融捏合产物进行冷却，粉碎和分级来获得无色电子照相透明调色剂。版权所有（C）2013，JPO＆INPIT

102. 发明专利

JP2012008397A Image forming apparatus, image forming method and process cartridge 审中-公开
标题翻译：图像形成装置，图像形成方法和过程盒
公开(公告)号：JP2012008397A
公开(公告)日：2012-01-12
申请号：JP2010145259
申请日：2010-06-25
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： AOKI MITSUO , SANTO HIDEYUKI , NAGAYAMA MASASHI
IPC分类号： G03G9/10 , G03G9/08 , G03G9/087 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus using a two-component developer, the apparatus capable of preventing thermal adhesion of toner on a doctor blade and achieving low-temperature fixing, and providing a high-quality image for a long period of time.SOLUTION: An image forming apparatus includes a developing device that regulates a developer carried on a developer carrier with a doctor blade and deposits the regulated developer onto a latent image on an image carrier to develop the image. The doctor blade has a surface roughness Ra of 0.2 μm or less on a surface where the developer is regulated in upstream with respect to a rotation direction of the developer carrier. The developer is a two-component developer comprising a carrier and toner. The toner comprises: base particles which have a volume average particle diameter of 3.0 to 6.0 μm, in which the toner content having a number-basis particle diameter of 4.0 μm or less is 30% or more by number and in which the toner content having a number-basis particle diameter of 2.0 μm or less is 10% or less by number; and an inorganic fine powder material (comprising an inorganic fine powder material A having a BET specific surface area of 30 to 90 m/g and an inorganic fine powder material B having a BET specific surface area of 100 to 250 m/g) externally added to the base particles.
摘要翻译：要解决的问题：为了提供一种使用双组分显影剂的图像形成装置，该装置能够防止调色剂在刮刀上的热粘附并实现低温定影，并且提供高质量的图像用于很长一段时间解决方案：图像形成装置包括显影装置，其利用刮刀调节载体在显影剂载体上的显影剂，并将调节的显影剂沉积在图像载体上的潜像上以显影图像。刮刀在显影剂相对于显影剂载体的旋转方向上游调节的表面上的表面粗糙度Ra为0.2μm以下。显影剂是包含载体和调色剂的双组分显影剂。调色剂包括：体积平均粒径为3.0〜6.0μm的基础颗粒，其中数量为4.0μm以下的调色剂含量为30％以上，其中调色剂含量为数量级的粒径为2.0μm以下的数量为10％以下。和无机细粉末材料（包含BET比表面积为30〜90μm的无机细粉末材料A和具有BET的无机细粉末材料B 比表面积为100〜250μm =“POST”> 2 / g）。版权所有（C）2012，JPO＆INPIT

103. 发明专利

JP2011081022A Electrophotographic toner 审中-公开
标题翻译：电子照相机
公开(公告)号：JP2011081022A
公开(公告)日：2011-04-21
申请号：JP2009229272
申请日：2009-10-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KISHIDA HIROYUKI , AOKI MITSUO
IPC分类号： G03G9/08 , G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide a toner applicable to an image forming apparatus of an electrophotographic system, the toner capable of outputting an image with stable picture quality while preventing filming on a photoreceptor by an external additive or wax even when the toner is used for long period of time.
SOLUTION: The toner includes toner base particles containing a binder resin and wax, and an external additive, and is characterized in that: the volume average particle diameter of the toner is not more than 5.5 μm; the binder resin contains a polyester resin as a main resin (by not less than 70%); in all particles having a circular-equivalent diameter of 1.00 μm to 2.00 μm of the toner measured by use of a flow type particle image analyzer, the proportion of particles except for toner particles is not more than 5.0% by number; and in the measurement by an ATR method (attenuated total reflection method) by use of an FT-IR (Fourier transform IR spectroscopy) of the toner, a peak ratio (W/R) of the spectral peak height W of the wax at 2850 cm
-1 to the spectral peak height R of the binder resin at 829 cm
-1 ranges from 0.050 to 0.100.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供适用于电子照相系统的图像形成装置的调色剂，该调色剂能够输出具有稳定图像质量的图像，同时防止外部添加剂或蜡在感光体上的成膜，即使当调色剂长时间使用。调色剂包括含有粘合剂树脂和蜡的调色剂基础颗粒和外部添加剂，其特征在于：调色剂的体积平均粒径不大于5.5μm; 粘合剂树脂含有作为主要树脂的聚酯树脂（不小于70％）; 在使用流动型颗粒图像分析仪测量的调色剂的圆当量直径为1.00μm至2.00μm的所有颗粒中，除了调色剂颗粒之外的颗粒的比例不超过5.0％在通过使用调色剂的FT-IR（傅里叶变换红外光谱）的ATR法（衰减全反射法）的测定中，蜡的光谱峰高W的峰值比（W / R）为2850 cm 2 / SP＆gt;相对于829cm -1的粘合剂树脂的光谱峰高R为0.050〜0.100。版权所有（C）2011，JPO＆INPIT

104. 发明专利

JP2010160234A Method for producing electrophotographic toner, toner, developing agent, image formation method, image formation device and process cartridge 审中-公开
标题翻译：生产电子照相色调剂，调色剂，发展剂，图像形成方法，图像形成装置和方法的方法
公开(公告)号：JP2010160234A
公开(公告)日：2010-07-22
申请号：JP2009001344
申请日：2009-01-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： AOKI MITSUO
IPC分类号： G03G9/087 , G03G9/08
摘要： PROBLEM TO BE SOLVED: To provide a toner having excellent uniform dispersion of an additive over a surface of a host particle and also having no variation in charging amount of a developing agent, no generation of toner filming on a photoreceptor, and further no generation of toner filming on a holding member of the developing agent due to the reduced free additive. SOLUTION: The method for producing the toner includes blending the additive containing at least silica with host particles obtained by performing pulverization and classification after at least a binder resin, a coloring agent, and a mold releasing agent are melt-kneaded and cooled, to produce a toner. The step of blending the additive comprises at least two blending steps. In the first step, blending is performed for the host particles and the additive containing at least silica, and in the second step, blending is further proceeded after only the host particles are added. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供在主体颗粒的表面上具有优异的添加剂分散性并且也不显影剂的带电量不变的调色剂，在感光体上不产生调色剂成膜，并且进一步由于游离添加剂的减少，在显影剂的保持构件上没有产生调色剂成膜。解决方案：调色剂的制造方法包括将至少含有二氧化硅的添加剂与在至少粘合剂树脂，着色剂和脱模剂进行粉碎分级后得到的分散体进行熔融混炼和冷却，以产生调色剂。混合添加剂的步骤包括至少两个混合步骤。在第一步骤中，对主体颗粒和至少含有二氧化硅的添加剂进行混合，在第二步骤中，仅在添加主体颗粒之后进一步进行共混。版权所有（C）2010，JPO＆INPIT

105. 发明专利

JP2010117575A Toner and developer 有权
标题翻译：调色板和开发者
公开(公告)号：JP2010117575A
公开(公告)日：2010-05-27
申请号：JP2008291093
申请日：2008-11-13
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAKAJIMA HISASHI , NAKAYAMA SHINYA , YAMADA SAORI , AOKI MITSUO , KISHIDA HIROYUKI , SHU HYO
IPC分类号： G03G9/087 , G03G9/113
摘要： PROBLEM TO BE SOLVED: To provide a toner capable of achieving low-temperature fixability, offset resistance and heat-resistant storage property on a level suitable for use in super high-speed image forming systems, reducing generation of odor, and having a remarkable effect of improving smear resistance on a developing roller or the like and excellent productivity. SOLUTION: The toner contains at least a binder resin and a colorant, wherein the binder resin contains a polyester resin (A) obtained by polycondensation of an alcohol component containing aliphatic polyhydric alcohol and a carboxylic acid component containing (meth)acrylic acid modified rosin, and a polyester resin (B) obtained by polycondensation of a carboxylic acid with an alcohol component containing an alkylene oxide adduct of bisphenol A expressed by general formula (1). In the formula, R 1 and R 2 each represents an alkylene group having 2 to 4 carbon atoms; R 3 and R 4 each represents a hydrogen atom, a straight-chain alkyl group or branched alkyl group having 1 to 6 carbon atoms; and x and y are positive integers with the sum of 1 to 16. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在适合用于超高速成像系统的水平上实现低温定影性，抗偏移性和耐热储存性的调色剂，减少气味的产生，并且具有显影辊等提高耐沾污性的显着效果和优异的生产率。调色剂至少含有粘合剂树脂和着色剂，其中粘合剂树脂含有通过使含有脂肪族多元醇的醇成分和含有（甲基）丙烯酸的羧酸成分缩聚得到的聚酯树脂（A）改性松香，以及通过羧酸与含有由通式（1）表示的双酚A的烯化氧加成物的醇成分缩聚得到的聚酯树脂（B）。在该式中，R SB 1和R SB 2各自表示具有2至4个碳原子的亚烷基; R SB 3和R SB 4各自表示氢原子，具有1〜6个碳原子的直链烷基或支链烷基; x和y是正整数，总和为1到16.版权所有（C）2010，JPO＆INPIT

106. 发明专利

JP2009294673A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2009294673A
公开(公告)日：2009-12-17
申请号：JP2009214523
申请日：2009-09-16
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI HIROHARU , AOKI MITSUO , ZHU BING , FURUICHI YASUSHI , WATANABE SHIGERU , KASAI TADASHI , TAKAHASHI YUTAKA
IPC分类号： G03G15/16 , G03G9/08
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of transfer dust and transfer void being problems when a toner image is electrostatically transferred from an intermediate transcript to a transfer material.
SOLUTION: In the transferring method where a toner image transferred from an image carrier to an intermediate transfer belt 51 is electrostatically transferred to transfer paper P using a transfer roller 56, the surface layer of the face stuck with toner in the intermediate transfer belt 51 is provided with an elastic layer, the space between the transfer roller 56 and the intermediate transfer belt 51 is provided with a means 56d applying pressure, transfer bias current between the intermediate transfer belt 51 and the transfer roller 56 is 0.05 to 0.2 μA/cm, and pressure of 1 to 10 N/cm is applied to the space between the transfer roller 56 and the backup roller 55 of the intermediate transfer belt 51. In this way, a transfer magnetic field can be applied without depending on toner height, thus the charging amount of the transfer paper is suppressed, discharge upon separation can be reduced, and diffused transfer can be reduced.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：当调色剂图像从中间转录体转印到转印材料上时，为了防止转印灰尘的发生和转印空隙是问题。解决方案：在从图像载体转印到中间转印带51的调色剂图像使用转印辊56静电转印到转印纸P的转印方法中，在中间转印中粘贴调色剂的表面的表面层带51设置有弹性层，转印辊56和中间转印带51之间的空间设置有施加压力的装置56d，中间转印带51和转印辊56之间的转印偏流为0.05至0.2μA / cm，并且1至10N / cm的压力施加到中间转印带51的转印辊56和支撑辊55之间的空间。以这种方式，可以施加转印磁场而不依赖于调色剂高度因此，转印纸的充电量被抑制，可以减少分离时的放电，可以减少扩散转印。版权所有（C）2010，JPO＆INPIT

107. 发明专利

JP2006085067A Toner, and image forming apparatus and process cartridge using the same 有权
标题翻译：调色剂和图像形成装置和使用它的处理盒
公开(公告)号：JP2006085067A
公开(公告)日：2006-03-30
申请号：JP2004272350
申请日：2004-09-17
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HASEGAWA HISAMI , AOKI MITSUO , SHU HIYO , MASUDA MINORU , UCHIUMI TOMOKO
IPC分类号： G03G9/09 , G03G9/08 , G03G9/087 , G03G15/08
CPC分类号： G03G9/00 , G03G9/0806 , G03G9/0821 , G03G9/0823 , G03G9/08782 , G03G9/09708 , G03G9/09733 , G03G15/0855 , G03G15/0865 , G03G15/0879
摘要： PROBLEM TO BE SOLVED: To provide a toner which can be smoothly replenished with a toner-replenishing device using a powder pump, even if the toner contains a release agent, and to provide an image forming apparatus. SOLUTION: The toner is replenished by a toner-replenishing device 120 including a powder pump 140 which automatically supplies the toner so as to develop electrostatic latent images on a photoreceptor; a toner-housing vessel, disposed linked with the pumping means; and an air pump for fluidizing the toner housed in the toner-housing vessel, and the toner comprises at least a binder resin, a chromatic colorant and a release agent and has a coefficient of kinetic friction of a toner surface within a range of 0.15-0.35. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：即使调色剂含有脱模剂，也可以提供一种能够通过使用粉末泵的调色剂补充装置平滑地补充的调色剂，并提供图像形成装置。
解决方案：调色剂由包括粉末泵140的调色剂补充装置120补充，粉末泵140自动供应调色剂以在感光体上显影静电潜像; 与所述泵送装置连接的调色剂容纳容器; 以及用于使容纳在调色剂容纳容器中的调色剂流化的空气泵，并且调色剂至少包含粘合剂树脂，有色着色剂和脱模剂，并且调色剂表面的动摩擦系数在0.15〜 0.35。版权所有（C）2006，JPO＆NCIPI

108. 发明专利

JP2006072262A Toner for two-component development processing, process cartridge, image forming method and image forming apparatus 审中-公开
标题翻译：用于两个组件开发处理，处理盒，图像形成方法和图像形成装置的调色剂
公开(公告)号：JP2006072262A
公开(公告)日：2006-03-16
申请号：JP2004258892
申请日：2004-09-06
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HASEGAWA HISAMI , MASUDA MINORU , AOKI MITSUO , SHU HIYO
IPC分类号： G03G9/087 , G03G9/08 , G03G9/09 , G03G15/01 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To obtain a toner which retains superior low-temperature fixability, hot-offset resistance and high gloss image and is free of toner aggregation by using a polyester resin formed in the presence of a specific catalyst, in a toner for color image formation. SOLUTION: The electrophotographic full-color toner contains a colorant, a polyester resin-based binder resin, a release agent and a wax, wherein the polyester resin is formed by polycondensation esterification, in the presence of one titanium-containing catalyst selected from the group consisting of titanium halides, titanium diketone enolates, titanium carboxylates, titanyl carboxylates and salts of titanyl carboxylates, the absolute value of the difference between the acid number of the polyester resin and that of the release agent is 0-5 mgKOH/g, and the polyester resin contains 0.5-10% of a component whose weight average molecular weight Mw is ≤1,000. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了获得保持优异的低温定影性，耐热胶印性和高光泽图像的调色剂，并且通过使用在特定催化剂的存在下形成的聚酯树脂，没有调色剂聚集，在用于彩色图像形成的调色剂。解决方案：电子照相全色调色剂含有着色剂，聚酯树脂基粘合剂树脂，脱模剂和蜡，其中聚酯树脂通过缩聚酯化形成，在一种选择的含钛催化剂的存在下由钛卤化物，钛二酮烯醇酯，羧酸钛，羧酸氧钛和羧酸氧钛盐组成的组中，聚酯树脂的酸值与脱模剂的酸值的绝对值为0-5mgKOH / g ，聚酯树脂含有重均分子量Mw为1000的成分的0.5〜10％。版权所有（C）2006，JPO＆NCIPI

109. 发明专利

JP2005141037A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2005141037A
公开(公告)日：2005-06-02
申请号：JP2003377918
申请日：2003-11-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KASAI TADASHI , SUZUKI HIROHARU , AOKI MITSUO , SHU HIYO , SOGA SETSUO , TAKAHASHI YUTAKA , FURUICHI YASUSHI
IPC分类号： G03G9/08 , G03G15/00 , G03G15/16 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus forming a high quality image whose average granularity is ≤0.25 on plain paper by performing transfer onto the plain paper using a powdered toner and heat-fixing this toner.
SOLUTION: In the electrophotographic system image forming apparatus with a photoreceptor 1, relationships among the area Sd of a toner image on the photoreceptor 1 after a developing step with a developing device 4, the area St of a toner image after transferring the toner used in the development onto transfer paper, and the area Sf of a toner image after heat-fixing the toner on the transfer paper with a fixing device 7 satisfy 0.8
摘要翻译：要解决的问题：通过使用粉末调色剂转印到普通纸上并对该调色剂进行热定影来提供在普通纸上形成平均粒度≤0.25的高质量图像的图像形成装置。解决方案：在具有感光体1的电子照相系统图像形成装置中，显影步骤后的感光体1上的调色剂图像的面积Sd与显影装置4之间的关系，转印后的调色剂图像的面积St 在转印纸上的显影中使用的调色剂和用定影装置7将转印纸上的调色剂热固定后的调色剂图像的面积Sf满足0.8

110. 发明专利

JP2005084656A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2005084656A
公开(公告)日：2005-03-31
申请号：JP2003320204
申请日：2003-09-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FURUICHI YASUSHI , AOKI MITSUO , SHU HIYO , SUZUKI HIROHARU , SOGA SETSUO , KASAI TADASHI , TAKAHASHI YUTAKA
IPC分类号： G03G9/08 , G03G15/00 , G03G15/08 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus for obtaining a smooth image equal to or higher than offset printing with ≤0.25 graininess so as to obtain not only basic image qualities such as image density and contamination on a base but high picture quality with ≤0.25 graininess. SOLUTION: In the image forming apparatus which transfers a toner image of powder toner formed on an image carrying body 1 by a developing means 4 onto a transfer material by a transfer means 5, the ratio of the dot area on the image carrying body after development to the dot area after transfer is 0.8 to 1.1 in the transfer means 5 and the toner height on the image carrying body after development is 2 to 5 times the average toner particle diameter in the development means 4. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种图像形成装置，用于获得等于或高于≤0.25粒度的胶版印刷的平滑图像，以便不仅获得基底图像质量和基底上的污染等基本图像质量图像质量≤0.25颗粒度。解决方案：在通过转印装置5将通过显影装置4将形成在图像承载体1上的粉末调色剂的调色剂图像转印到转印材料上的图像形成装置中，图像承载体上的点区域的比例显影后的显影后的体显影后的点区域为0.8〜1.1，显影后的图像载体的调色剂高度为显影装置4中的平均调色剂粒径的2〜5倍。版权所有：（C）2005，JPO＆NCIPI

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