公开(公告)号：JP2010107601A

公开(公告)日：2010-05-13

申请号：JP2008277514

申请日：2008-10-28

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： TOIZUMI KIYOSHI ,  MATSUMOTO KATSURU ,  KIKAWA KEIICHI

IPC: G03G9/08

CPC classification number: G03G15/08 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/09716 ,  G03G9/09725 ,  G03G2215/0602

Abstract: PROBLEM TO BE SOLVED: To provide a toner containing an external additive externally added to spherical toner particles having a small diameter, the toner maintaining cleaning performance and suppressing decrease in a toner specific charge amount in a print durability test. SOLUTION: The toner comprises toner particles to which silica particles and inorganic fine particles having an average primary particle diameter smaller than that of the silica particles are externally added. The toner particles exhibit a shape factor SF-1 of 130 to 140, a shape factor SF-2 of 120 to 130, and a volume average particle size of 5 μm to 8 μm. The silica particles have an average primary particle diameter of 80 nm to 150 nm and a water content of not more than 1.5 wt.%. The particle size distribution of the silica particles shows a log-normal distribution, and the geometric standard deviation σ g in the particle diameter of the silica particles is less than 1.30. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供外部添加到具有小直径的球形调色剂颗粒的外部添加剂的调色剂，调色剂保持清洁性能并抑制印刷耐久性试验中的调色剂比电荷量的降低。 调色剂包括调色剂颗粒，二氧化硅颗粒和平均一次粒径小于二氧化硅颗粒的一次粒径的无机细颗粒被外部添加。 调色剂颗粒的形状因子SF-1为130〜140，形状因子SF-2为120〜130，体积平均粒径为5μm〜8μm。 二氧化硅粒子的平均一次粒径为80nm〜150nm，水分含量为1.5wt％以下。 二氧化硅粒子的粒度分布表示对数正态分布，二氧化硅粒子的粒径的几何标准偏差σ g 小于1.30。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010039314A

公开(公告)日：2010-02-18

申请号：JP2008203629

申请日：2008-08-06

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KIKAWA KEIICHI ,  MATSUMOTO KATSURU ,  MAEZAWA YOSHIHIRO

IPC: G03G9/08 ,  G03G9/087

Abstract: PROBLEM TO BE SOLVED: To provide a toner having stable charging performance in a high humidity environment, and to provide a method of manufacturing the toner. SOLUTION: In a dispersion liquid preparation step (s1), a melt-kneaded material containing at least a binder resin, a colorant and barium sulfate particles subjected to a hydrophobic treatment on the surfaces is formed into fine particles to prepare a dispersion liquid having the fine particles of the melt-kneaded material dispersed in a liquid medium. In an aggregation step (s2), the fine particles of the melt-kneaded material included in the dispersion liquid are aggregated. Thereby, the obtained toner contains toner particles containing at least a binder resin and a colorant, to which barium sulfate particles subjected to a hydrophobic treatment on the surfaces are internally added. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供在高湿度环境下具有稳定充电性能的调色剂，并提供制造调色剂的方法。 解决方案：在分散液制备步骤（s1）中，将至少含有粘合剂树脂，着色剂和表面上进行疏水处理的硫酸钡颗粒的熔融捏合材料形成为细颗粒以制备分散体 具有分散在液体介质中的熔融捏合材料的细颗粒的液体。 在聚集步骤（s2）中，包含在分散液中的熔融捏合材料的细颗粒被聚集。 由此，得到的调色剂含有至少含有粘合剂树脂和着色剂的调色剂颗粒，其中在表面上进行了疏水处理的硫酸钡颗粒被内部添加。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010031096A

公开(公告)日：2010-02-12

申请号：JP2008192880

申请日：2008-07-25

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： MAEZAWA YOSHIHIRO ,  MATSUMOTO KATSURU

IPC: C08J3/12 ,  G03G9/08 ,  G03G9/087

CPC classification number: G03G9/0804 ,  G03G9/081

Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of a coalesced resin particle for obtaining a coalesced resin particle by coalescing aggregated resin particles in a grain boundary-free state in a short time while keeping a grain size distribution within a narrow range. SOLUTION: In the coalescing step s3, the aggregated resin particle slurry is made to flow through a pipe under a predetermined heated and pressurized condition. In the pressure reduction step s4 before cooling, the coalesced resin particle slurry flowing through the pipe in a heated and pressurized state is subjected to pressure reduction before cooled down to a predetermined temperature in a cooling step s5. In the pressure reduction step s6, the coalesced resin particle slurry having flowed through the pipe and having been cooled in the cooling step s5 is subjected to pressure reduction to the atmospheric pressure. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 解决问题的方案：提供一种聚结树脂颗粒的制造方法，用于通过在短时间内将晶粒尺寸分布保持在窄范围内聚集凝集树脂颗粒而在无晶界的状态下获得聚结的树脂颗粒 。 解决方案：在聚结步骤s3中，使聚集的树脂颗粒浆料在预定的加热和加压条件下流过管道。 在冷却之前的减压步骤s4中，在冷却步骤s5中，在加热和加压状态下流过管的聚结树脂颗粒浆料在冷却至预定温度之前进行减压。 在减压工序s6中，在冷却工序s5中流过管并被冷却的聚结树脂颗粒浆料经过减压至大气压。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009265530A

公开(公告)日：2009-11-12

申请号：JP2008117748

申请日：2008-04-28

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： NAGAOKA AYAE ,  SHIBAI YASUHIRO ,  MATSUMOTO KATSURU ,  KIKAWA KEIICHI

IPC: G03G9/087 ,  G03G9/08

Abstract: PROBLEM TO BE SOLVED: To provide: toner of high transparency and high coloring power, and excellent in fluidity, electrification stability, preserving property, and durability, in spite of being low temperature fixability; a method of manufacturing the toner; a two-component developer; a developing device; and an image forming apparatus thereof. SOLUTION: In a melt kneading step, a melt kneaded object of coloring resin particles is obtained by melt kneading at least a binder resin and a coloring agent in a specific temperature range. In a coloring resin particles-scattering step, slurry of coloring resin particles is obtained by dispersing the melt kneaded object of the coloring resin particles into a liquid medium. In the capsulated mold-releasing agent particles-dispersing step, slurry of the capsulated mold-releasing agent particles is obtained. In the flocculating step, the slurry of the coloring resin particles and the slurry of the capsulated mold releasing agent particles are mixed and the coloring resin particles and the capsulated mold-releasing agent particles are made to flocculate. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供：高透明度和高着色力的调色剂，并且尽管具有低的定影性，但流动性，起电稳定性，保存性和耐久性优异; 制造调色剂的方法; 一个双组分开发商; 显影装置; 及其图像形成装置。 解决方案：在熔融捏合步骤中，通过在特定温度范围内至少将粘合剂树脂和着色剂熔融捏合来获得着色树脂颗粒的熔融捏合物体。 在着色树脂颗粒散射步骤中，着色树脂颗粒的浆料通过将着色树脂颗粒的熔融捏合物体分散在液体介质中而获得。 在封装的脱模剂颗粒分散步骤中，获得封装的脱模剂颗粒的浆料。 在絮凝步骤中，将着色树脂颗粒的浆料和封装的脱模剂颗粒的浆料混合，使着色树脂颗粒和封装的脱模剂颗粒絮凝。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009251472A

公开(公告)日：2009-10-29

申请号：JP2008101963

申请日：2008-04-09

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KIKAWA KEIICHI ,  NAGAOKA AYAE ,  MATSUMOTO KATSURU

IPC: G03G9/087 ,  C08J3/16

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing aggregated particles having a particle diameter in a single micron order (1 μm or more and less than 10 μm), a narrow grain size distribution and an aspheric figure, and having both of good cleaning property and good transfer property, and to provide aggregated particles manufactured by the method, a toner and a developer containing the aggregated particles, and a developing device and an image forming apparatus using the developer. SOLUTION: The aggregated particles are manufactured by the method for manufacturing aggregated particles including a dispersion liquid preparation step and an aggregation step. In the dispersion liquid preparation step, a liquid medium containing a polymer dispersant and an objective material to be processed is treated by use of a high-pressure machine having a gradual pressure release mechanism so as to atomize the objective material at a temperature higher by 100°C to 150°C than the outflow initiation temperature of the objective material measured by a flow tester, so as to prepare a dispersion liquid having fine particles of the objective material dispersed in the liquid medium. In the aggregation step, the fine particles contained in the dispersion liquid are aggregated. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 待解决的问题：为了提供一种制造具有1μm以上且小于10μm的粒径的粒径，窄的粒径分布和非球面的聚集粒子的方法，并具有两者 具有良好的清洁性能和良好的转印性能，并且提供通过该方法制造的凝集颗粒，调色剂和含有聚集颗粒的显影剂，以及使用显影剂的显影装置和图像形成装置。 解决方案：通过包含分散液制备步骤和聚集步骤的凝集颗粒的制造方法制造凝集颗粒。 在分散液制备工序中，使用具有逐渐压力释放机构的高压机械处理含有高分子分散剂和被处理物的液体介质，以便在高于100℃的温度下使目标物质雾化 比通过流动试验仪测定的目标物质的流出引发温度高出150℃，制备分散在液体介质中的目标物质微粒的分散液。 在聚集步骤中，分散液中所含的微粒被聚集。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009249580A

公开(公告)日：2009-10-29

申请号：JP2008101965

申请日：2008-04-09

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KIKAWA KEIICHI ,  MATSUMOTO KATSURU ,  NAGAOKA AYAE

IPC: C08J3/12 ,  G03G9/08 ,  G03G9/087 ,  G03G9/12 ,  G03G9/13

Abstract: PROBLEM TO BE SOLVED: To provide non-spherical particles in a uniform figure having a particle diameter of not more than 3 μm, the particles exhibiting good transfer property and good cleaning property in both of dry and wet processes when used as an electrophotographic developer, achieving formation of an image with high picture qualities, and being easily collected by a filter in an image forming apparatus when used in a dry process, which can suppress adverse influences on a human body by scattered particles out of an image forming apparatus, and to provide a toner and a developer containing the non-spherical particles, a developing device for developing an image by use of the developer, and an image forming apparatus equipped with the developing device. SOLUTION: The developer comprises non-spherical particles having a volume-average particle diameter of 0.1 μm or more and 3 μm or less, a shape factor SF-1 of 125 or more and 145 or less, and a shape factor SF-2 of 115 or more and 140 or less. An image is formed by an image forming apparatus 1, 201 equipped with a developing device 14, 214 charged with the above developer. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供具有不大于3μm的粒径的均匀图形中的非球形颗粒，当用作干燥和湿法时，在干法和湿法两者中表现出良好的转印性能和良好的清洁性能的颗粒 电子照相显影剂，形成具有高图像质量的图像，并且当在干法中使用时可以容易地通过图像形成装置中的过滤器收集，这可以通过散射的颗粒从图像形成装置中抑制对人体的不利影响 ，并提供含有非球形颗粒的调色剂和显影剂，通过使用显影剂显影图像的显影装置和配备有显影装置的图像形成装置。 解决方案：显影剂包括体积平均粒径为0.1μm以上且3μm以下的非球形颗粒，125以上且145以下的形状因子SF-1和形状因子SF -2为115以上且140以下。 图像由装有上述显影剂的显影装置14,214的图像形成装置1,201形成。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009014872A

公开(公告)日：2009-01-22

申请号：JP2007174582

申请日：2007-07-02

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KIKAWA KEIICHI ,  SHIBAI YASUHIRO ,  MATSUMOTO KATSURU

IPC: G03G9/087 ,  G03G9/08 ,  G03G9/097

CPC classification number: G03G9/081 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/08782 ,  G03G9/09741 ,  G03G9/0975

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a toner excellent in transferability, cleaning property, filming resistance, blocking resistance, hot offset resistance and transparency by finely dispersing toner components so as to prevent uneven distribution. SOLUTION: Melt-kneaded products 1 and 2 are each composed of a binder resin 3a, 3b, a colorant 4a, 4b and a release agent 5a, 5b. The colorant and release agent are dispersed in the binder resin. The melt-kneaded product 1 is negatively charged by an anionic dispersant 6, and the melt-kneaded product 2 is positively charged by a cationic dispersant 7. An aggregate 8 is formed by heteroaggregation of a plurality of such melt-kneaded products 1 and 2. The aggregate 8 is fused by heating to form a circular toner 9. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种通过细分散调色剂组分来制造转印性，清洁性，耐成膜性，耐粘连性，耐热粘合性和透明性优异的调色剂的方法，以防止不均匀分布。 解决方案：熔融捏合产物1和2分别由粘合剂树脂3a，3b，着色剂4a，4b和脱模剂5a，5b组成。 着色剂和脱模剂分散在粘合剂树脂中。 熔融捏合产物1通过阴离子分散剂6带负电，并且熔融捏合产物2通过阳离子分散剂7带正电。聚集体8通过多个这样的熔融捏合产物1和2的杂聚而形成 聚集体8通过加热熔合以形成圆形调色剂9.版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008310263A

公开(公告)日：2008-12-25

申请号：JP2007160557

申请日：2007-06-18

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： SHIBAI YASUHIRO ,  MATSUMOTO KATSURU

IPC: G03G9/087

Abstract: PROBLEM TO BE SOLVED: To provide a method capable of easily and continuously producing a toner having a sharp particle size distribution, to provide a toner, to provide a two component developer, to provide a developing device, and to provide an image forming apparatus. SOLUTION: A toner raw material mixed liquid obtained by mixing a resin particulate-dispersed liquid at least comprising a binding resin with the other toner component is continuously fed to a mixing space under pressure, a flocculant is continuously fed to the mixing space, the toner raw materials are flocculated by inline flocculation, and the obtained flocculated particle-dispersed liquid is cooled/decompressed, so as to obtain a toner. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种能够容易且连续地生产具有尖锐的粒度分布的调色剂，提供调色剂，提供双组分显影剂，提供显影装置和提供图像的方法 成型装置。 解决方案：通过将至少包含粘合树脂的树脂颗粒分散液与另一种调色剂组分混合而获得的调色剂原料混合液体在压力下连续进料到混合空间，将絮凝剂连续地供给到混合空间 调色剂原料通过在线絮凝进行絮凝，将所得絮凝粒子分散液进行冷却/减压，得到调色剂。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008307517A

公开(公告)日：2008-12-25

申请号：JP2007160558

申请日：2007-06-18

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： MATSUMOTO KATSURU ,  SHIBAI YASUHIRO

IPC: B08B3/08 ,  G03G9/087

Abstract: PROBLEM TO BE SOLVED: To provide a method for cleaning a particle in which the amount of a cleaning liquid to be used is made small, by which an apparatus for cleaning the particle can be miniaturized and in which the particle can be cleaned continuously and uniformly in high efficiency and to provide the apparatus for cleaning the particle in which this cleaning method is used.
SOLUTION: In a dispersion liquid supply step, a particle-dispersed liquid is supplied continuously to a mixing space while being pressurized and the cleaning liquid is also supplied continuously to the mixing space while being pressurized to clean the particle.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种清洁其中使用的清洁液的量小的颗粒的方法，通过该方法可以使用于清洁颗粒的装置可以小型化并且其中可以清洁颗粒 连续均匀地高效率地提供清洁使用该清洗方法的颗粒的装置。 解决方案：在分散液供给步骤中，将粒子分散液体连续供给混合空间同时加压，同时在加压清洗液体的同时将清洗液连续供给至混合空间，以清洁颗粒。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008138170A

公开(公告)日：2008-06-19

申请号：JP2007228357

申请日：2007-09-03

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KIKAWA KEIICHI ,  MATSUMOTO KATSURU ,  NAGAOKA AYAE

IPC: C08J3/05 ,  G03G9/087

CPC classification number: G03G9/0804 ,  C08J3/12 ,  C08J2300/00 ,  C08J2367/02 ,  G03G9/081 ,  G03G9/0815

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing resin particles having particle diameters stably and efficiently controlled, by removing bubbles from the surface of a molten and kneaded material to be a raw material of resin particles and, as a results, fully insuring a working point for a surfactant on the surface of the molten and kneaded material. SOLUTION: The bubbles adhered to the molten kneaded material containing a synthetic resin are removed by pressurizing a mixture of the molten kneaded material containing the synthetic resin and an aqueous medium containing a surfactant by pressurizing under a pressure of 15 to 120 MPa in a roughly pulverizing step. In finely pulverizing step, an aqueous slurry containing coarse grains of the molten kneaded material being a state where the bubbles adhered to the surface are removed through passing a pressure nozzle at a roughly pulverizing step, and fine grains are formed by using a high pressure homogenizing method. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 待解决的问题：为了提供一种通过从作为树脂颗粒的原料的熔融混炼材料的表面除去气泡的方式制造具有稳定和有效控制的粒径的树脂颗粒的方法，结果， 完全确保熔融和捏合材料表面上的表面活性剂的工作点。 解决方案：通过在15〜120MPa的压力下加压含有合成树脂的熔融捏合材料和含有表面活性剂的水性介质的混合物，将附着在含有合成树脂的熔融捏和材料上的气泡除去 粗粉碎步骤。 在细粉碎工序中，通过在大致粉碎工序中通过压力喷嘴除去熔融混炼物的粗粒子的附着在表面的气泡的状态的含水浆料，通过使用高压均质化 方法。 版权所有（C）2008，JPO＆INPIT