Two-component developer, developing device, image forming apparatus and image forming method
    21.
    发明专利
    Two-component developer, developing device, image forming apparatus and image forming method 审中-公开
    双组分开发商,开发设备,图像形成装置和图像形成方法

    公开(公告)号:JP2010286742A

    公开(公告)日:2010-12-24

    申请号:JP2009141670

    申请日:2009-06-12

    Abstract: PROBLEM TO BE SOLVED: To provide a two-component developer having a long life of a toner and good stirrability and stably charging the toner, to provide a developing device using the two-component developer, and to provide an image forming apparatus and an image forming method. SOLUTION: The two-component developer 1 includes a toner 3 and a resin coated carrier 2. The toner 3 includes: a toner core particle formed by aggregating polyester resin particles dispersed in an aqueous solution with a polyvalent metal salt; and a coating layer formed by coating the toner core particle surface with a carboxylate-containing polyester resin by aggregation and converting the carboxylate contained in the polyester resin into the corresponding carboxylic acid. The resin coated carrier 2 includes: a carrier core material 2a having an apparent density of ≤2.0 g/cm 3 , a residual magnetization of ≤10 emu/g and a volume average particle size of 25-50 μm; and a resin coating layer 2b formed on the carrier core material 2a surface. An image is formed using the two-component developer 1. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题:为了提供具有长寿命的调色剂和良好的搅拌能力和稳定地对调色剂充电的双组分显影剂,以提供使用双组分显影剂的显影装置,并提供一种图像形成装置 和图像形成方法。 解决方案:双组分显影剂1包括调色剂3和树脂涂布载体2.调色剂3包括:通过将分散在水溶液中的聚酯树脂颗粒与多价金属盐聚集而形成的调色剂芯颗粒; 以及通过聚集使含羧酸酯的聚酯树脂涂覆调色剂核颗粒表面而形成的涂层,并将聚酯树脂中所含的羧酸转化成相应的羧酸。 树脂涂布载体2包括:表观密度为≤2.0g/ cm 3,SP的残余磁化强度≤10emu/ g,体积平均粒径为25〜50的载体芯材2a 微米; 以及形成在载体芯材2a表面上的树脂被覆层2b。 使用双组分显影剂1形成图像。版权所有(C)2011,JPO&INPIT

    Method for producing resin-coated carrier, resin-coated carrier, two-component developer, developing device, apparatus and method for forming image
    22.
    发明专利
    Method for producing resin-coated carrier, resin-coated carrier, two-component developer, developing device, apparatus and method for forming image 有权
    用于生产树脂涂布载体,树脂涂布载体,双组分开发商,开发装置的方法,用于形成图像的装置和方法

    公开(公告)号:JP2010250281A

    公开(公告)日:2010-11-04

    申请号:JP2010027023

    申请日:2010-02-09

    CPC classification number: G03G9/1075 G03G9/1131 G03G9/1133

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a low density resin-coated carrier having a small resin amount to a carrier core material and having a uniform resin coating layer formed on the carrier core material. SOLUTION: A resin-coated carrier 2 includes a carrier core material 2a and a resin coating layer 2b formed on the surface of the carrier core material 2a. The carrier core material 2a includes pores and an apparent density of 1.6-2.0 g/cm 3 and a remanent magnetization of 10 emu/g or less. The resin coating layer 2b is formed by a dry process of making resin particles adhere to the surface of the carrier core material 2a and applying heat and impact force to the resin particles. A volume average particle size of the resin particles is less than 1 μm. A two-component developer 1 containing the resin-coated carrier 2 is charged in a developing device in an image forming apparatus, and an image is formed. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 解决的问题:提供一种生产具有小的树脂量的低密度树脂涂布载体与载体芯材并且在载体芯材上形成均匀的树脂涂层的方法。 解决方案:树脂涂覆载体2包括载体芯材2a和形成在载体芯材2a的表面上的树脂涂层2b。 载体芯材2a包括孔,表观密度为1.6-2.0g / cm 3,剩余磁化强度为10emu / g以下。 树脂涂层2b通过使树脂颗粒粘附到载体芯材2a的表面并对树脂颗粒施加热和冲击力的干法来形成。 树脂粒子的体积平均粒径小于1μm。 将包含树脂涂布载体2的双组分显影剂1装入图像形成装置中的显影装置中,形成图像。 版权所有(C)2011,JPO&INPIT

    Electrophotographic two-component developer
    23.
    发明专利
    Electrophotographic two-component developer 审中-公开
    电子双组分开发商

    公开(公告)号:JP2010020172A

    公开(公告)日:2010-01-28

    申请号:JP2008181759

    申请日:2008-07-11

    Abstract: PROBLEM TO BE SOLVED: To solve the following problems: in an environment in which a two-component developer is subjected to thermal and mechanical stress with time and in the main unit of a copying machine, fluidity of the developer deteriorates significantly and density unevenness of an output image occurs; and in printing on many sheets, the fluidity of the developer deteriorates, density unevenness due to insufficient conveyance occurs and an obtained output image degrades significantly. SOLUTION: There is provided an electrophotographic two-component developer satisfying an expression (1): 10.4≤log((C/B)/(A×T))≤17.9, wherein A represents the wax material content (wt.%) of a toner therein; T represents toner concentration (wt.%) of the two-component developer; B represents volume resistance (Ωcm) of a carrier core material; and C represents a volume resistance (Ωcm) of a carrier. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 解决的问题为了解决以下问题:在双组分显影剂随时间受到热应力和机械应力的环境中,在复印机的主单元中,显影剂的流动性显着劣化,并且 出现输出图像的浓度不均匀; 并且在许多片材上印刷时,显影剂的流动性劣化,由于不充分的输送而导致的浓度不均匀性发生,并且获得的输出图像显着劣化。 解决方案:提供满足表达式(1):10.4≤log((C / B)/(A×T))≤17.9的电子照相双组分显影剂,其中A表示蜡材料含量(wt。 %)的调色剂; T表示双组分显影剂的调色剂浓度(重量%); B表示载体芯材的体积电阻(Ωcm); C表示载体的体积电阻(Ωcm)。 版权所有(C)2010,JPO&INPIT

    Carrier and method of manufacturing the same
    24.
    发明专利
    Carrier and method of manufacturing the same 审中-公开
    载体及其制造方法

    公开(公告)号:JP2009258384A

    公开(公告)日:2009-11-05

    申请号:JP2008107186

    申请日:2008-04-16

    Abstract: PROBLEM TO BE SOLVED: To provide a carrier capable of improving stability of charging amount of toner and capable of maintaining high quality image formation for a long period of time.
    SOLUTION: The carrier 1 includes a cover layer 3 on the surface of core material 2, wherein a shape factor (SF-1) of the core material 2 is ≥119, a proportion of the shape factor of the core material after forming the cover layer 3 to the shape factor of the core material 2 is in the range of ≥90% to ≤100%, a bridge resistance value upon agitation test is lowered by a change amount in the range of 0 to ≤1/10 with respect to the initial value under an electric field of 1,000 V/cm and, as the result, the high quality image formation can be maintained over a long period of time.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题:提供能够提高调色剂的充电量的稳定性并能够长时间保持高质量图像形成的载体。 解决方案:载体1在芯材2的表面上包括覆盖层3,其中芯材2的形状因子(SF-1)≥119,芯材的形状因子的比例在 将覆盖层3形成为芯材2的形状因子的范围在≥90%〜≤100%的范围内,搅拌试验时的桥电阻值降低0〜≤1/ 10的范围内的变化量 相对于1000V / cm的电场下的初始值,结果可以长时间保持高质量的图像形成。 版权所有(C)2010,JPO&INPIT

    トナー
    25.
    发明专利
    トナー 审中-公开

    公开(公告)号:JP2017083524A

    公开(公告)日:2017-05-18

    申请号:JP2015208933

    申请日:2015-10-23

    CPC classification number: G03G9/08755 G03G9/08782 G03G9/08795 G03G9/08797

    Abstract: 【課題】本発明は、2成分現像装置内で長期間撹拌すると現像ローラ表面にトナーが融着し、時間の経過とともに現像ローラ表面全体がトナー構成成分で覆われる焼き付き現象が発生し、画像濃度が低下するといった問題を生じない2成分現像剤の提供を課題とする。【解決手段】2価のアルコール成分とジカルボン酸成分を重合して得られる非晶性ポリエステル樹脂中に、直鎖状飽和脂肪族ポリエステルユニットで構成される結晶性ポリエステル樹脂が分散し、離径剤としてモノエステル系ワックスが添加されており、トナー中の結晶性樹脂の分散径が100nm以上500nm以下であり、前記エステルワックス分散径が200nm以上1000nm以下で分散していことを特徴とするトナーにより上記課題を解決する。【選択図】なし

    電子写真用トナー、二成分現像剤及びそれを用いた画像形成装置
    26.
    发明专利
    電子写真用トナー、二成分現像剤及びそれを用いた画像形成装置 审中-公开
    电子显微镜,双组分显影剂和使用其的图像形成装置的调色剂

    公开(公告)号:JP2015025888A

    公开(公告)日:2015-02-05

    申请号:JP2013154238

    申请日:2013-07-25

    Abstract: 【課題】トナーの飛散で発生する画像カブリを防止でき、さらに低温定着性と耐高温オフセット性を両立させたトナー、二成分現像剤及びそれを用いた画像形成装置を提供する。【解決手段】少なくともバインダー樹脂、着色剤及び離型剤を含む電子写真用トナーであって、バインダー樹脂がポリエステル系樹脂を含み、離型剤がペンタエリスリトール脂肪酸エステルを含み、電子写真用トナー中の前記ペンタエリスリトール脂肪酸エステルの結晶化度が30〜80の範囲であり、電子写真用トナー中の前記離型剤の平均分散径が0.1μm以上1.0μm以下であることを特徴とする電子写真用トナー。【選択図】図1

    Abstract translation: 要解决的问题:提供构造成防止由于散射调色剂引起的图像雾化并确保低温定影性和耐高温偏移性的调色剂,并且提供双组分显影剂和使用其的图像形成装置。溶液:用于 电子照相术至少含有粘合剂树脂,着色剂和脱模剂。 粘合剂树脂含有聚酯树脂。 脱模剂含有季戊四醇脂肪酸酯。 电子照相用调色剂中季戊四醇脂肪酸酯的结晶度为30-80。 电子照相用调色剂中的脱模剂的平均分散直径为0.1〜1.0μm。

    電子写真用2成分系現像剤およびそれを用いる画像形成方法
    27.
    发明专利
    電子写真用2成分系現像剤およびそれを用いる画像形成方法 审中-公开
    用于电子照相和图像形成方法的两组分开发者

    公开(公告)号:JP2014202814A

    公开(公告)日:2014-10-27

    申请号:JP2013076967

    申请日:2013-04-02

    Abstract: 【課題】感光体の帯電手段として非接触帯電方式を、クリーニング手段としてクリーニングブレード方式を採用した負帯電性トナー及び樹脂被覆キャリアを有する2成分画像形成装置において、長期の使用に渡り、感光体表面の傷を抑制することができる電子写真用2成分系現像剤およびそれを用いる画像形成方法を提供することを課題とする。【解決手段】感光体の帯電手段として非接触帯電方式を、クリーニング手段としてクリーニングブレード方式を採用し、負帯電性トナー及び樹脂被覆キャリアを有する2成分画像形成装置に用いられる電子写真用2成分系現像剤であって、前記負帯電性トナーが、少なくとも結着樹脂、着色剤及びワックスを含有し、少なくとも粒子径65〜200nmの疎水性シリカが0.4〜1.0重量%、および粒子径10〜40nmの酸化チタンが0.1〜0.6重量%外添されており、前記樹脂被覆キャリアが、劣化試験前の樹脂被覆キャリアに対して劣化試験における被覆層削れ量0.03〜0.10重量%を有することを特徴とする電子写真用2成分系現像剤により、上記の課題を解決する。【選択図】なし

    Abstract translation: 要解决的问题:为了提供用于防止长时间使用的感光体表面的损伤的电子照相用双成分显影剂和使用其的图像形成方法,在采用非 - 用于清洁装置的感光体和清洁刮板系统的充电装置的接触充电系统,并且包括带负电的调色剂和树脂涂覆的载体。解决方案:用于电子照相的双组分显影剂用于双组分成像装置, 用于感光体的充电装置的非接触充电系统和用于清洁装置的清洁刮板系统,并且包括带负电的调色剂和树脂涂覆的载体。 带负电的调色剂至少含有粘合剂树脂,着色剂和蜡。 至少0.4-1.0重量%的粒度为65-200nm的疏水性二氧化硅和0.1-0.6重量%的粒径为10-40nm的氧化钛被外部加入。 对于未经测试的树脂涂覆的载体,在劣化试验中,树脂涂覆的载体具有重量百分比0.03-0.10的涂层侵蚀。

    Two-component developer and image forming method
    28.
    发明专利
    Two-component developer and image forming method 有权
    双组分开发和图像形成方法

    公开(公告)号:JP2012078524A

    公开(公告)日:2012-04-19

    申请号:JP2010222927

    申请日:2010-09-30

    CPC classification number: G03G9/097 G03G9/1075 G03G9/1136 G03G9/1139

    Abstract: PROBLEM TO BE SOLVED: To provide a two-component developer having good transfer efficiency and capable of stably charging a toner for a long period of time, and to provide an image forming method.SOLUTION: The two-component developer contains a toner and a resin-coated carrier. The toner includes a plurality of kinds of external additives having different average primary particle diameters from one another, externally added to the toner. In the plurality of kinds of external additives, at least one kind of additive has an average primary particle diameter of 0.1 μm or more. The resin-coated carrier comprises a carrier core material made of a ferrite having a volume average particle diameter of 25 μm or more and 90 μm or less and a resin coating layer formed on the surface of the carrier core material, the layer containing a silicone resin and magnetic fine particles having a volume average particle diameter of 0.1 μm or more and 2 μm or less, and the layer containing the magnetic fine particles by 40 parts by weight or more and 100 parts by weight or less with respect to 100 parts by weight of the silicone resin.

    Abstract translation: 解决的问题:提供一种双组分显影剂,其具有良好的转印效率并且能够长时间稳定地充电调色剂,并提供图像形成方法。

    解决方案:双组分显影剂含有调色剂和树脂涂布载体。 调色剂包括彼此不同的平均一次粒径不同的多种外部添加剂,外部添加到调色剂中。 在多种外用添加剂中,至少一种添加剂的平均一次粒径为0.1μm以上。 树脂涂布载体包括由体积平均粒径为25μm以上且90μm以下的铁素体构成的载体芯材,以及形成在载体芯材的表面上的树脂被覆层,含有硅氧烷的层 体积平均粒径为0.1μm以上且2μm以下的树脂和磁性细颗粒,并且含有磁性细颗粒的层相对于100重量份相对于100重量份以上且100重量份以下 有机硅树脂的重量。 版权所有(C)2012,JPO&INPIT

    Resin coated carrier, and method of manufacturing the same
    29.
    发明专利
    Resin coated carrier, and method of manufacturing the same 审中-公开
    树脂涂布载体及其制造方法

    公开(公告)号:JP2011141455A

    公开(公告)日:2011-07-21

    申请号:JP2010002396

    申请日:2010-01-07

    Abstract: PROBLEM TO BE SOLVED: To provide a resin coated carrier where a charge control agent is distributed uniformly in a resin coated layer and toner is stably charged for a long time, and a method of manufacturing the resin coated carrier.
    SOLUTION: This resin coated carrier includes a carrier core material and a resin coated layer formed on the surface of the carrier core material. The resin coated layer contains charge control agent carrying particles carrying the charge control agent in a plurality of holes of porous inorganic fine particles having the holes.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种树脂涂布载体,其中电荷控制剂均匀地分布在树脂涂层中并且调色剂长时间稳定地充电,以及制备树脂涂布载体的方法。 解决方案:该树脂涂覆载体包括载体芯材和形成在载体芯材表面上的树脂涂层。 树脂涂层含有带有带有电荷控制剂的颗粒的电荷控制剂,该多孔孔具有多个孔。 版权所有(C)2011,JPO&INPIT

    Resin-coated carrier, method for producing the same, two-component developer including the resin-coated carrier, developing device, and image forming apparatus
    30.
    发明专利
    Resin-coated carrier, method for producing the same, two-component developer including the resin-coated carrier, developing device, and image forming apparatus 有权
    树脂涂布载体,其制造方法,包括树脂涂布载体的两组分开发商,开发装置和图像形成装置

    公开(公告)号:JP2010262083A

    公开(公告)日:2010-11-18

    申请号:JP2009111575

    申请日:2009-04-30

    Abstract: PROBLEM TO BE SOLVED: To provide a resin-coated carrier capable of stably charging a toner by preventing the thickness of a resin coating layer that is formed on a surface of the carrier core from becoming nonuniform. SOLUTION: The resin-coated carrier 50 includes a carrier core 51 and a resin coating layer 52, formed on the surface of the carrier core 51. The carrier core 51 is composed of a porous material, having fine pores 51a formed on a surface thereof, and has an apparent density of 1.6-2.0 g/cm 3 . The resin coating layer 52 contains cross-linked fine resin particles 53. Additionally, the resin-coated carrier 50 is configured, such that a volume average particle size of the cross-linked fine resin particles 53 contained in the resin coating layer 52 and the area average diameter of the surface fine pores 51a satisfy a predetermined relational expression. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题:通过防止形成在载体芯的表面上的树脂涂层的厚度变得不均匀来提供能够稳定地对调色剂充电的树脂涂布载体。 解决方案:树脂涂覆载体50包括形成在载体芯51的表面上的载体芯51和树脂涂层52.载体芯51由多孔材料构成,具有形成在 其表面,并且具有1.6-2.0g / cm 3的表观密度。 树脂被覆层52含有交联的树脂微粒53.此外,树脂被覆载体50构成为使树脂被覆层52中包含的交联性微粒子树脂53的体积平均粒径和 表面细孔51a的面积平均直径满足规定的关系式。 版权所有(C)2011,JPO&INPIT

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