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    • 2. 发明授权
    • Magnetic brush developing process and developer
    • 磁刷开发过程和开发者
    • US5310617A
    • 1994-05-10
    • US593885
    • 1990-10-05
    • Kyouya TaguchiTakashi TeshimaKazuhiko YamamuraTakatomo Fukumoto
    • Kyouya TaguchiTakashi TeshimaKazuhiko YamamuraTakatomo Fukumoto
    • G03G9/10G03G13/09G03G9/107
    • G03G9/10
    • Disclosed are a two-component type developer which is supplied to an area where a bias voltage of at least 250 V is applied, and a developing process using this developer. In this developer, by adjusting the particle size distribution of carrier particles within a specific range, occurrence of the so-called carrier dragging phenomenon of the transfer of the carrier together with the toner to a photosensitive material can be prevented. This adjustment of the particle size distribution is such that the content of carrier particles having a size smaller than 250 mesh is less than 8% by weight based on the entire carrier particles, the diameter D.sub.50 of the weight average particle size corresponding to 50% of the weight of the entire carrier particles is in the range of from 80 to 120 .mu.m and the difference between D.sub.25 and D.sub.75 is in the range of from 5 to 20 .mu.m.
    • 公开了一种双组分型显影剂,其被供应到施加至少250V的偏置电压的区域和使用该显影剂的显影处理。 在这种显影剂中,通过调整载体颗粒在特定范围内的粒度分布,可以防止载体与调色剂一起转印到感光材料上的所谓载体拖曳现象。 这种粒度分布的调节使得尺寸小于250目的载体颗粒的含量基于载体颗粒的总和小于8重量%,重均粒径的直径D50对应于50重量% 整个载体颗粒的重量在80至120μm的范围内,D25和D75之间的差在5至20μm的范围内。
    • 5. 发明授权
    • Electrophotographing dry-type toner and production method therefor
    • 电子照相干式调色剂及其制备方法
    • US06686112B2
    • 2004-02-03
    • US09959952
    • 2001-11-13
    • Takashi TeshimaMasaki KatoTakatomo Fukumoto
    • Takashi TeshimaMasaki KatoTakatomo Fukumoto
    • G03G908
    • G03G9/09342G03G9/08G03G9/09314G03G9/09335G03G9/09392G03G9/097
    • The present invention provides an electrophotographic dry toner comprising colored resin particles with releasing agent particles dispersed in a binder resin or an electrophotographic dry toner wherein a resin coating layer obtained by the fixation and fusion of encapsulating resin particles is provided on the surface of colored resin particles with releasing agent particles dispersed in a binder. The releasing agent particles dispersed in each colored resin particle have a particle diameter distribution such that the particle diameter of releasing agent particles dispersed in the vicinity of the surface of each colored resin particle is larger than the particle diameter of releasing agent particles at a central site of the colored resin particle. Alternatively, the colored resin particle is coated with the releasing coating layer with a releasing agent layer interposed between them. The electrophotographic dry toner is improved in terms of offset resistance on fixation and durability with no contamination due to filming of process members such as photosensitive materials and developers. The invention also provides a process for the production of a color toner improved in terms of transparency with a reduced amount of free fine powders.
    • 本发明提供了一种电子照相干调色剂,其包含着色树脂颗粒与分散在粘合剂树脂中的脱模剂颗粒或电子照相干调色剂,其中通过胶粘树脂颗粒的固定和熔融获得的树脂涂层被提供在着色树脂颗粒的表面上 脱模剂颗粒分散在粘合剂中。 分散在每个着色树脂颗粒中的脱模剂颗粒具有使分散在每个着色树脂颗粒表面附近的脱模剂颗粒的粒径大于中心部位的脱模剂颗粒的粒径的粒径分布 的着色树脂颗粒。 或者,着色树脂颗粒用剥离剂层涂覆有释放剂层,介于它们之间。 电子照相干调色剂在固定和耐久性方面的抗偏移性方面得到改善,而由于诸如感光材料和显影剂的处理构件的成膜而没有污染。 本发明还提供了一种生产彩色调色剂的方法,该方法在透明度方面具有改善的量,其中游离细粉末的量减少。
    • 9. 发明授权
    • Method of producing liquid developer and liquid developer produced by the method
    • 通过该方法制备液体显影剂和液体显影剂的方法
    • US07635550B2
    • 2009-12-22
    • US11372236
    • 2006-03-09
    • Takashi Teshima
    • Takashi Teshima
    • G03G9/125
    • G03G9/12G03G9/081G03G9/0819G03G9/125G03G9/13
    • A method of producing a liquid developer which comprises an insulation liquid and toner particles dispersed in the solution is provided. The method comprises the steps of: preparing a kneaded material containing a coloring agent and a resin material; dispersing the kneaded material into an insulation liquid to obtain a molten state kneaded material dispersed liquid in which the kneaded material in a molten state is finely dispersed; and cooling the molten state kneaded material dispersed liquid to solidify the molten state kneaded material; wherein the insulation liquid contains as its major component an unsaturated fatty acid. According to the method, it is possible to provide a liquid developer in which toner particles having a small particle size distribution and a uniform shape are dispersed so that properties of each component of the toner particles can be exhibited sufficiently. The liquid developer mentioned above is also harmless to environment.
    • 提供一种制造液体显影剂的方法,其包括分散在溶液中的绝缘液体和调色剂颗粒。 该方法包括以下步骤:制备含有着色剂和树脂材料的捏合材料; 将混炼物分散在绝缘液中,得到熔融状态的混炼物质分散的熔融状态的混炼物分散液, 并将熔融状态的混炼物分散液冷却,使熔融状态的混炼物凝固; 其中所述绝缘液体以其主要成分为不饱和脂肪酸。 根据该方法,可以提供其中分散有较小粒度分布和均匀形状的调色剂颗粒的液体显影剂,从而可以充分发挥调色剂颗粒的各组分的性质。 上述液体显影剂对环境也是无害的。
    • 10. 发明申请
    • Method of Producing Liquid Developer and Liquid Developer Produced by the Method
    • 通过该方法生产液体显影剂和液体显影剂的方法
    • US20090214976A1
    • 2009-08-27
    • US11813580
    • 2006-01-12
    • Takashi TeshimaSatoru Miura
    • Takashi TeshimaSatoru Miura
    • G03G9/08G03G5/00G03G9/00
    • G03G9/125G03G9/12G03G9/13
    • A liquid developer comprised of toner particles having excellent fixing properties to a recording medium is provided, and a liquid developer in which toner particles having uniform shape and small particle size distribution are dispersed is also provided, and further a method of producing a liquid developer capable of producing such a liquid developer efficiently is also provided. In particular, a producing method capable of producing such a liquid developer as described above in a method harmless to the environment is provided. The liquid developer producing method is a method for producing a liquid developer which is comprised of an insulation liquid and toner particles dispersed in the insulation liquid and is characterized by comprising the steps of: a water-based dispersion liquid preparing step for preparing a water-based dispersion liquid, the water-based dispersion liquid comprising a dispersoid comprised of a material containing a resin material and a water-based dispersion medium constituted from a water-based liquid in which the dispersoid is dispersed; a dispersion medium removal step for removing the dispersion medium to obtain toner particles; and a dispersing step for dispersing the toner particles into the insulation liquid.
    • 提供了由具有对记录介质具有优异定影性的调色剂颗粒组成的液体显影剂,并且还提供了其中分散具有均匀形状和小粒度分布的调色剂颗粒的液体显影剂,并且还提供了一种制备液体显影剂的方法 还提供了有效地生产这种液体显影剂的方法。 特别地,提供一种能够以无害于环境的方法制造如上所述的这种液体显影剂的制造方法。 液体显影剂的制造方法是由绝缘液体和分散在绝缘液中的调色剂颗粒构成的液体显影剂的制造方法,其特征在于,包括以下工序:水性分散液的制备工序, 所述水性分散液包含由含有树脂材料的材料构成的分散质和由分散有分散体的水性液体构成的水性分散介质; 用于除去分散介质以获得调色剂颗粒的分散介质去除步骤; 以及用于将调色剂颗粒分散到绝缘液体中的分散步骤。