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1. 发明专利

JP2013190667A Toner set, developer, image forming method, and image forming device 审中-公开
标题翻译：调色剂设置，开发者，图像形成方法和图像形成装置
公开(公告)号：JP2013190667A
公开(公告)日：2013-09-26
申请号：JP2012057556
申请日：2012-03-14
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： AWAMURA JUNICHI , KUSAHARA TERUKI , OGAWA SATORU , ITO DAISUKE , INOUE DAISUKE , UCHINOKURA OSAMU , KOJIMA TOMOYUKI , NAGATOMO NOBUYASU , HOZUMI MAMORU , SATO SACHIKO
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09
CPC分类号： G03G9/0819 , G03G9/0804 , G03G9/0821 , G03G9/08782 , G03G9/08795 , G03G9/08797
摘要： PROBLEM TO BE SOLVED: To provide a toner set having excellent low-temperature fixability and forming a high-gloss part on one recording medium, and to provide developer, an image forming method and an image forming device.SOLUTION: A toner set includes one or more kinds of color toner containing binder resin, colorant and a mold-releasing agent, and transparent toner containing the binder resin and the mold-releasing agent but contains no colorant. Both of the color toner and the transparent toner contain crystalline resin. A mean particle diameter of the mold-releasing agent contained in the transparent toner is 0.2-2.0 μm in major diameter. When area of a toner cross section of the mold-releasing agent located near the transparent toner inner surface is A, and area of the toner cross section of the mold-releasing agent located near the color toner inner surface is B, 1
摘要翻译：要解决的问题：提供具有优异的低温定影性并在一个记录介质上形成高光泽部分的调色剂组，并提供显影剂，图像形成方法和图像形成装置。解决方案：调色剂组包括一个或更多种含有粘合剂树脂，着色剂和脱模剂的彩色调色剂，以及含有粘合剂树脂和脱模剂但不含着色剂的透明调色剂。彩色调色剂和透明调色剂均含有结晶性树脂。包含在透明调色剂中的脱模剂的平均粒径为大直径为0.2-2.0μm。当位于透明调色剂内表面附近的脱模剂的调色剂横截面的面积为A时，位于彩色调色剂内表面附近的脱模剂的调色剂横截面积为B，1

2. 发明专利

JP2013064819A Toner and manufacturing method of the toner, and image formation device and image formation method using the toner 审中-公开
标题翻译：调色剂的调色剂和制造方法，图像形成装置和使用色调剂的图像形成方法
公开(公告)号：JP2013064819A
公开(公告)日：2013-04-11
申请号：JP2011202751
申请日：2011-09-16
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAGATOMO NOBUYASU , KOJIMA TOMOYUKI , SATO SACHIKO , OGAWA SATORU , HONDA TAKAHIRO , ITO DAISUKE , KUSAHARA TERUKI , INOUE DAISUKE , AWAMURA JUNICHI , UCHINOKURA OSAMU
IPC分类号： G03G9/08 , G03G9/087 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image formation device and a toner having excellent low-temperature fixability, in which toner aggregation does not occur even under a highly humid environment and charge stability can be secured.SOLUTION: A toner material at least including binder resin or binder resin precursor is dissolved or dispersed to obtain an organic solvent liquid. The organic solvent liquid is emulsified or dispersed in an aqueous medium including a stabilizer to obtain an O/W type emulsion or dispersion liquid. From the O/W type emulsion or dispersion liquid, an organic solvent is removed to obtain an electrostatic charge image developing toner. The electrostatic charge image developing toner includes an external additive. The external additive has an average particle diameter of 50-200 nm. A specific surface area A before hydrophobic treatment and a specific surface area B after hydrophobic treatment on the external additive satisfy a mathematical formula (1): 6/(D.ρ)≤A-B≤A/2 ... formula (1), where ρ represents an absolute specific gravity of the external additive, and D represents particle size of the external additive.
摘要翻译：要解决的问题：为了提供一种图像形成装置和具有优异的低温定影性的调色剂，即使在高湿度环境下也不会发生调色剂聚集，并且可以确保电荷稳定性。解决方案：将至少包含粘合剂树脂或粘合剂树脂前体的调色剂材料溶解或分散以获得有机溶剂液体。将有机溶剂液体乳化或分散在包含稳定剂的水性介质中，得到O / W型乳液或分散液。从O / W型乳液或分散液中除去有机溶剂，得到静电荷图像显影调色剂。静电荷图像显影调色剂包括外部添加剂。外用添加剂的平均粒径为50-200nm。憎水处理前的比表面积A和疏水处理后的外用添加剂的比表面积B满足数学式（1）：6 /（D.ρ）≤AB≤A/ 2 ...式（1）其中ρ表示外部添加剂的绝对比重，D表示外部添加剂的粒径。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2013015673A Toner, developer, image forming apparatus and image forming method 有权
标题翻译：调色剂，开发者，图像形成装置和图像形成方法
公开(公告)号：JP2013015673A
公开(公告)日：2013-01-24
申请号：JP2011148332
申请日：2011-07-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HOZUMI MAMORU , AWAMURA JUNICHI , KUSAHARA TERUKI , ITO DAISUKE , OGAWA SATORU , HONDA TAKAHIRO , HIROHARA KIWAKO , UCHINOKURA OSAMU , KOJIMA TOMOYUKI , SATO SACHIKO , NAGATOMO NOBUYASU , WATANABE MASAKI
IPC分类号： G03G9/08 , G03G9/087
CPC分类号： G03G9/08755 , G03G9/0804 , G03G9/08782 , G03G9/08797
摘要： PROBLEM TO BE SOLVED: To provide toner and the like, which achieves good fixing property at 150°C or lower, has a high effect of suppressing contamination inside a copying machine or the like by volatile wax dust or generation of dust to the outside by exhaust, even when the toner is used in a high-speed copying machine, and can give a favorable fixed image.SOLUTION: Toner comprises a binder resin, a release agent and colorant. The binder resin comprises a crystalline polyester resin and a non-crystalline polyester resin. The release agent shows an endothermic peak temperature of 60°C to 80°C in the second temperature rise in differential scanning calorimetry; and the release agent is ester wax satisfying 1.1 (Pa s)≤ηa≤2.0 (Pa s) and 0.001≤ηb/ηa≤1.00, where ηa represents complex viscosity (Pa s) of the release agent obtained by measurement of dynamic viscoelasticity at measurement frequency of 6.28 rad/s and ηb represents complex viscosity (Pa s) of the release agent measured by measurement of dynamic viscoelasticity at measurement frequency of 62.8 rad/s.
摘要翻译：待解决的问题：为了提供在150℃以下的良好定影性能的调色剂等具有通过挥发性蜡粉尘或产生粉尘而抑制复印机等内部的污染的高效果即使在高速复印机中使用调色剂的情况下，也可以通过排气进行外部的定影，并且能够赋予良好的固定图像。调色剂包括粘合剂树脂，脱模剂和着色剂。粘合剂树脂包括结晶聚酯树脂和非结晶聚酯树脂。脱模剂在差示扫描量热法中的第二升温中显示出60℃至80℃的吸热峰温度; 并且脱模剂为满足1.1（Pa·s）≤n * a≤2.0（Pa s）和0.001≤η * SP> b /η * a≤1.00，其中η * a表示得到的脱模剂的复数粘度（Pa s）通过在6.28rad / s的测量频率下测量动态粘弹性，并且η表示通过在测量频率下测量动态粘弹性测量的脱模剂的复数粘度（Pa s） 62.8 rad / s。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2013007843A Toner for electrostatic charge development 审中-公开
标题翻译：用于静电充电开发的调色剂
公开(公告)号：JP2013007843A
公开(公告)日：2013-01-10
申请号：JP2011139708
申请日：2011-06-23
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHIDA RYUTA , AWAMURA JUNICHI , KUSAHARA TERUKI , OGAWA SATORU , HONDA TAKAHIRO , ITO DAISUKE , KOJIMA TOMOYUKI , INOUE DAISUKE , SATO YUKIFUMI , SATO SACHIKO , UCHINOKURA OSAMU
IPC分类号： G03G9/087 , G03G9/08
摘要： PROBLEM TO BE SOLVED: To provide a toner exhibiting high glossiness without inhibiting low-temperature fixability and a hot offset property.SOLUTION: The toner is obtained by: preparing an organic solvent solution or dispersion of a toner resin material containing a binder resin, a prepolymer comprising a modified polyester resin and an active hydrogen group-containing compound together with a colorant and a release agent; subjecting the solution or dispersion to a crosslinking reaction and/or an elongation reaction in an aqueous medium dispersion liquid; and removing the solvent. The prepolymer is derived from an unmodified polyester that is a precursor of the prepolymer; and the unmodified polyester is a polyester having an alcohol having a carbon ring as a copolymer component. The molecular weight Mpt at the maximum peak of the unmodified polyester satisfies 14000≤Mpt≤21000. An average number F of functional groups that is reactive for elongation or crosslinking, included in one molecule of the prepolymer, satisfies 1.8≤F≤2.2. A gel fraction G as an insoluble content in methyl acetate included in the toner satisfies 13≤G≤21 (wt.%).
摘要翻译：要解决的问题：提供在不抑制低温定影性和热偏移性的情况下显示高光泽度的调色剂。解决方案：调色剂是通过以下步骤获得的：制备含有粘合剂树脂的调色剂树脂材料的有机溶剂溶液或分散体，包含改性聚酯树脂和含活泼氢基团的化合物的预聚物以及着色剂和释放代理人使溶液或分散体在水性介质分散液中进行交联反应和/或伸长反应; 并除去溶剂。预聚物衍生自作为预聚物前体的未改性聚酯; 未改性聚酯是具有作为共聚物成分的碳环的醇的聚酯。未改性聚酯的最大峰的分子量Mpt满足14000≤Mpt≤21000。包含在一分子预聚物中的伸长或交联反应的官能团的平均数F满足1.8≤F≤2.2。包含在调色剂中的乙酸甲酯中不溶物含量的凝胶分数G满足13≤G≤21（重量％）。版权所有（C）2013，JPO＆INPIT

5. 发明专利

JP2012198332A Electrophotographic toner and production method of the same 审中-公开
标题翻译：电摄影调色剂及其生产方法
公开(公告)号：JP2012198332A
公开(公告)日：2012-10-18
申请号：JP2011061425
申请日：2011-03-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： INOUE DAISUKE , UCHINOKURA OSAMU , OGAWA SATORU , AWAMURA JUNICHI , SUGIMOTO TSUTOMU , KOJIMA TOMOYUKI , ITO DAISUKE , KUSAHARA TERUKI , SATO SACHIKO , HOZUMI MAMORU , SATO YUKIFUMI
IPC分类号： G03G9/087 , G03G9/08 , G03G9/09
摘要： PROBLEM TO BE SOLVED: To provide an electrophotographic toner and a production method of the toner having high electric resistance, excellent heat-resistant storage property, low-temperature fixability and hot offset resistance, and capable of forming an image with high resolution and high picture quality.SOLUTION: The electrophotographic toner contains at least a binder resin, a colorant and a release agent. The electrophotographic toner is produced by using a master batch containing, as the binder resin, a polyester resin (first resin) having a weight average molecular weight of 1,000 to 20,000 and a polyester resin (second resin) having a weight average molecular weight of 25,000 to 40,000, and the colorant, and dispersing the colorant in the binder resin. The method for producing the toner includes the above step.
摘要翻译：要解决的问题：提供一种电子照相调色剂和具有高电阻，优异的耐热储存性，低温定影性和耐热偏移性的调色剂的制备方法，并且能够形成高分辨率的图像和高画质。电解调色剂至少含有粘合剂树脂，着色剂和脱模剂。电子照相调色剂通过使用含有重均分子量为1,000〜20,000的聚酯树脂（第一树脂）和重均分子量为25,000的聚酯树脂（第二树脂）作为粘合剂树脂的母料来制备至40,000，着色剂，并将着色剂分散在粘合剂树脂中。调色剂的制造方法包括上述工序。版权所有（C）2013，JPO＆INPIT

6. 发明专利

JP2012189967A Manufacturing method of toner 审中-公开
标题翻译：调色剂的制造方法
公开(公告)号：JP2012189967A
公开(公告)日：2012-10-04
申请号：JP2011055824
申请日：2011-03-14
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HOZUMI MAMORU , AWAMURA JUNICHI , OGAWA SATORU , KUSAHARA TERUKI , YOSHIDA RYUTA , INOUE DAISUKE , ITO DAISUKE , UCHINOKURA OSAMU , NAGATOMO NOBUYASU , SATO SACHIKO , HONDA TAKAHIRO
IPC分类号： G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of a toner being excellent in low-temperature fixability, heat-resistant preservability and hot-offset resistance and allowing formation of an image with high glossiness.SOLUTION: A manufacturing method of toner comprises a step of preparing a composition containing a compound having a crystalline polyester, a certain amorphous polyester, a prepolymer and an amino group; a mold release agent and a colorant, by aging a liquid comprising a particle in an aqueous medium using an organic solvent. The number of the isocyanate group of the prepolymer is 1.8 or more and 2.2 or less, as an average value. In the first temperature rising of differential scanning calorimetry of the particle, if the glass transition point and the height of the endothermic peak from the crystalline polyester per unit mass of the particle before aging are defined as Tg[°C] and H[μW/mg] respectively and if the glass transition point and the height of the endothermic peak of the particle after aging are defined as Tg[°C] and H[μW/mg] respectively, the following two formulas: 1.3≤H/H≤1.6 and 0≤Tg-Tg≤1.0 are satisfied.
摘要翻译：要解决的问题：提供低温定影性，耐热保存性和耐热粘合性优异的调色剂的制造方法，并且可以形成具有高光泽度的图像。调色剂的制造方法包括：制备含有结晶性聚酯，某种无定形聚酯，预聚物和氨基的化合物的组合物的工序; 脱模剂和着色剂，通过使用有机溶剂在含水介质中老化包含颗粒的液体。预聚物的异氰酸酯基数为1.8以上且2.2以下，作为平均值。在颗粒的差示扫描量热法的第一次升温中，如果玻璃化转变点和来自结晶聚酯的每单位质量的老化前的颗粒的吸热峰的高度定义为Tg 1 [℃]和H 1 [μW/ mg]，如果玻璃化转变点和老化后颗粒的吸热峰的高度定义为 Tg 2 [℃]和H 2 [μW/ mg]，以下两个公式：1.3≤H 2 / H 1 ≤1.6和0≤Tg 2 -Tg 1 ≤1.0。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2012018249A Toner, developer, container containing developer, process cartridge, image forming method and image forming apparatus 有权
标题翻译：调色剂，开发商，集装箱发展商，过程盒，图像形成方法和图像形成装置
公开(公告)号：JP2012018249A
公开(公告)日：2012-01-26
申请号：JP2010154665
申请日：2010-07-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HOZUMI MAMORU , SUGIMOTO TSUYOSHI , AWAMURA JUNICHI , KUSAHARA TERUKI , SATO YUKIFUMI , UCHINOKURA OSAMU , OGAWA SATORU , KOJIMA TOMOYUKI , INOUE DAISUKE , ITO DAISUKE , SATO SACHIKO
IPC分类号： G03G9/08 , G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide a toner which has excellent releasing property and low temperature fixability, and low contaminating property in a machine and which can be easily produced.SOLUTION: The toner comprises base particles produced by emulsifying or dispersing the following liquid in an aqueous medium, the liquid prepared by dissolving or dispersing a toner material containing a binder resin and a release agent in an organic solvent. The binder resin contains a polyester resin. The release agent is prepared by mixing a hydrocarbon wax in a synthetic ester wax in a weight ratio of 1/9 to 9/1. In a DSC measurement and in a period of second time temperature elevation, the glass transition temperature (Tg) of the hydrocarbon wax denoted by Tg, the Tg of the synthetic ester wax denoted by Tgand the Tg of the release agent denoted by Tghave a relationship of Tg>Tgand Tg>Tg.
摘要翻译：要解决的问题：提供具有优异的脱模性和低温定影性的调色剂，并且机器中的污染性低，并且可以容易地制备。调色剂包括通过将下列液体乳化或分散在水性介质中制备的基础颗粒，该液体通过将含有粘合剂树脂和脱模剂的调色剂材料溶解或分散在有机溶剂中而制备。粘合剂树脂含有聚酯树脂。脱模剂通过以合成酯蜡以1/9至9/1的重量比混合烃蜡来制备。在DSC测量中和在第二次温度升高的时段中，由Tg表示的烃蜡的玻璃化转变温度（Tg）表示为合成酯蜡的Tg 通过Tg 2 ，由Tg 1 + 2 表示的脱模剂的Tg具有Tg 1 > Tg 1 + 2 和Tg 2 > Tg 1 + 2 。版权所有（C）2012，JPO＆INPIT

8. 发明专利

JP2013190647A Toner, two-component developer, and image forming apparatus 审中-公开
标题翻译：调色剂，双组分显影剂和图像形成装置
公开(公告)号：JP2013190647A
公开(公告)日：2013-09-26
申请号：JP2012057366
申请日：2012-03-14
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOJIMA TOMOYUKI , NAGATOMO NOBUYASU , SATO SACHIKO , UCHINOKURA OSAMU , AWAMURA JUNICHI , OGAWA SATORU , HONDA TAKAHIRO , ITO DAISUKE , KUSAHARA TERUKI , WATANABE MASAKI , INOUE DAISUKE
IPC分类号： G03G9/08 , G03G9/087 , G03G15/08
CPC分类号： G03G9/0825 , G03G9/097 , G03G9/09708
摘要： PROBLEM TO BE SOLVED: To provide a toner that satisfies all of low-temperature fixability, heat-resistance storability, transferability, and a filming property even in a long period of use; developer using the toner; and an image forming apparatus.SOLUTION: A toner of the present invention contains toner base particles containing at least a binder resin and colorant, and at least an external additive. The external additive contains at least adhered particles; the adhered particles are non-spherical secondary particles formed by primary particles adhering to each other; and the particle size distribution index of the adhered particles is represented by the following formula (1), wherein, Dbrepresents the particle diameter of the adhered particles at a point when an accumulated value is 50 number%, when the particle diameter (nm) of the adhered particles is an abscissa, and the accumulated value (number%) of the adhered particles is an ordinate, and the accumulated distribution of the adhered particles is drawn from the small-particle side; and Dbrepresents the particle diameter of the adhered particles at a point when the accumulated value is 10 number%.
摘要翻译：要解决的问题：即使在长时间使用中也可提供满足低温定影性，耐热性保存性，转印性和成膜性全部的调色剂; 显影剂使用墨粉; 和图像形成装置。解决方案：本发明的调色剂含有至少含有粘合剂树脂和着色剂的调色剂基础颗粒和至少一种外部添加剂。外部添加剂至少含有粘附的颗粒; 粘附的颗粒是由一次颗粒彼此附着形成的非球形二次颗粒; 粘附粒子的粒径分布指数由下式（1）表示，其中，当累积值为50数量％时，Db表示粘附粒子的粒径，当粒径（nm）为附着粒子为横坐标，附着粒子的累计值（％）为纵坐标，附着粒子的累积分布从小粒子侧抽出; 并且Db表示在累积值为10数量％的点处的附着粒子的粒径。

9. 发明专利

JP2012189876A Image forming apparatus and toner for developing electrostatic charge image 审中-公开
标题翻译：图像形成装置和调色剂用于开发静电荷图像
公开(公告)号：JP2012189876A
公开(公告)日：2012-10-04
申请号：JP2011054359
申请日：2011-03-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SATO SACHIKO , HONDA TAKAHIRO , KOJIMA TOMOYUKI , UCHINOKURA OSAMU , AWAMURA JUNICHI , OGAWA SATORU , INOUE DAISUKE
IPC分类号： G03G9/08 , G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide a toner containing crystalline polyester which suppresses aggregation of the toner in a high temperature and high humidity environment markedly, while suppressing degradation in a filming property and toner fluidity that may occur as a side effect, and stabilizes a charging property of the toner, and to provide an image forming apparatus mounted with the toner.SOLUTION: In an image forming apparatus of this invention, a toner for forming an image is obtained by dispersing an oil phase into an aqueous medium, the oil phase including at least a crystalline polyester resin and at least one kind or more of non-crystalline polyester resins as a binding resin component in an organic solvent and by removing the organic solvent from the thus obtained dispersion liquid. The toner includes, on a surface of toner base particles, an additive containing at least two or more kinds of fine particles of silica. The silica includes both silica A from a sol-gel process and silica B from a dry process, and the silica A from a sol-gel process has an average primary particle diameter of 20 to 120 nm, and the silica A absorbs 0.01 g or more of moisture by allowing the silica A to stand for 1 week.
摘要翻译：要解决的问题：提供一种含有结晶聚酯的调色剂，其显着地抑制调色剂在高温高湿环境中的聚集，同时抑制作为副作用可能发生的成膜性和调色剂流动性的降低，以及稳定调色剂的带电性，并提供安装有调色剂的图像形成装置。解决方案：在本发明的图像形成装置中，用于形成图像的调色剂是通过将油相分散到水性介质中获得的，所述油相至少包括结晶聚酯树脂和至少一种或多种非结晶性聚酯树脂作为有机溶剂中的粘合树脂成分，并从由此得到的分散液中除去有机溶剂。调色剂在调色剂基础颗粒的表面上包括含有至少两种或更多种二氧化硅微粒的添加剂。二氧化硅包括来自溶胶 - 凝胶法的二氧化硅A和来自干法的二氧化硅B，来自溶胶 - 凝胶法的二氧化硅A的平均一次粒径为20〜120nm，二氧化硅A吸收0.01g或更多的水分通过使二氧化硅A放置1周。版权所有（C）2013，JPO＆INPIT

10. 发明专利

JP2011203717A Electrostatic charge developing toner 有权
标题翻译：静电充电发电机
公开(公告)号：JP2011203717A
公开(公告)日：2011-10-13
申请号：JP2011014780
申请日：2011-01-27
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KUSAHARA TERUKI , AWAMURA JUNICHI , SUGIMOTO TSUTOMU , SHU HYO , SUZUKI TOMOMI , UCHINOKURA OSAMU , HONDA TAKAHIRO , KOJIMA TOMOYUKI , OGAWA SATORU , INOUE DAISUKE , SATO YUKIFUMI , ITO DAISUKE , YOSHIDA RYUTA , SATO SACHIKO
IPC分类号： G03G9/087 , G03G9/08 , G03G9/10 , G03G15/08
CPC分类号： G03G9/0821 , G03G9/08755 , G03G9/08782 , G03G9/08795 , G03G9/08797
摘要： PROBLEM TO BE SOLVED: To provide an electrostatic charge image developing toner which is excellent in the image quality, cleanability and coloring property of an image and in low temperature fixability and toner preservability, in a recycling system using a color toner.SOLUTION: The electrostatic charge developing toner is obtained by granulation from a dispersion in which an oil phase containing a toner composition in an organic solvent is dispersed in an aqueous medium. A binder resin in the toner composition contains a low molecular resin component, wherein a resin softening coefficient (A) of the low molecular resin component represented by expression: A=|(lnG'(r1)-lnG'(r2))/(T1-T2)| is >0.165, and when a flow start temperature (°C) of the low molecular resin component measured with an elevated flow tester is designated as Tfb, a storage modulus (dyne/cm) G'(Tfb) is ≤1×10. In the expression, T1 is a temperature (°C) at which a storage modulus G'(r1) becomes 1×10(dyne/cm), and T2 is a temperature (°C) at which a storage modulus G'(r2) becomes 1×10, as measured with a rheometer at a frequency of 1 Hz and a strain of 1 deg.
摘要翻译：要解决的问题：提供一种在使用彩色调色剂的回收系统中提供图像质量，图像的清洁性和着色性以及低温定影性和调色剂保存性的静电电荷图像显影调色剂。溶液：静电通过将含有有机溶剂中的调色剂组合物的油相分散在水性介质中的分散体造粒得到电荷显影调色剂。调色剂组合物中的粘合剂树脂含有低分子量树脂组分，其中由式A = |（lnG'（r1）-lnG'（r2））/（ T1-T2）| > 0.165，并且当用升高的流动测试仪测量的低分子量树脂组分的流动开始温度（℃）被指定为Tfb时，储能模量（dyne / cm）G'（Tfb）≤1×10。在该表达式中，T1是储能模量G'（r1）变为1×10（dyne / cm）的温度（℃），T2是储存模量G'（r2）的温度（℃））变为1×10，如用流变仪在1Hz的频率和1度的应变下测量的。

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