公开(公告)号：US5258253A

公开(公告)日：1993-11-02

申请号：US838325

申请日：1992-02-20

申请人： Takatomo Fukumoto ,  Takashi Teshima ,  Kazuhiko Yamamura ,  Kyouya Taguchi ,  Hiroyuki Hazama ,  Takeshi Higuchi ,  Koji Honda

发明人： Takatomo Fukumoto ,  Takashi Teshima ,  Kazuhiko Yamamura ,  Kyouya Taguchi ,  Hiroyuki Hazama ,  Takeshi Higuchi ,  Koji Honda

IPC分类号： G03G9/08 ,  G03G9/113 ,  G03G9/083

CPC分类号： G03G9/1136 ,  G03G9/0823

摘要： Disclosed is a two-component type developer comprising a toner and a coated magnetic carrier wherein said toner has an electroconductivity lower than 3.5.times.10.sup.-10 S/cm and the coating of said magnetic carrier consists of a silicone resin having as its component unit a basic nitrogen atom-containing organic group bonded to a silicone atom (N-containing silicone resin).Such developer is capable of forming images having a high image density and a high image quality, particularly as a white developer or a color developer if developing is carried out even under ordinary conditions, since the toner has its charge quantity maintained in an appropriate range in the developing step.

摘要翻译： 公开了一种双组分型显影剂，其包含调色剂和涂覆的磁性载体，其中所述调色剂具有低于3.5×10 -10 S / cm的导电性，并且所述磁性载体的涂层由有机硅树脂组成，所述硅树脂的组分单元为碱性 与含硅原子结合的含氮原子的有机基团（含N的有机硅树脂）。 这样的显影剂能够形成具有高图像密度和高图像质量的图像，特别是作为白色显影剂或彩色显影剂，即使在普通条件下进行显影，因为调色剂的电荷量保持在适当的范围内 开发步骤。

公开(公告)号：US5310617A

公开(公告)日：1994-05-10

申请号：US593885

申请日：1990-10-05

申请人： Kyouya Taguchi ,  Takashi Teshima ,  Kazuhiko Yamamura ,  Takatomo Fukumoto

发明人： Kyouya Taguchi ,  Takashi Teshima ,  Kazuhiko Yamamura ,  Takatomo Fukumoto

IPC分类号： G03G9/10 ,  G03G13/09 ,  G03G9/107

CPC分类号： G03G9/10

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5168027A

公开(公告)日：1992-12-01

申请号：US599826

申请日：1990-10-19

申请人： Kyouya Taguchi ,  Takashi Teshima ,  Kazuhiko Yamamura ,  Takatomo Fukumoto

发明人： Kyouya Taguchi ,  Takashi Teshima ,  Kazuhiko Yamamura ,  Takatomo Fukumoto

IPC分类号： G03G9/097 ,  G03G9/10 ,  G03G9/107 ,  G03G9/113

CPC分类号： G03G9/107 ,  G03G9/10 ,  G03G9/1132

摘要： Disclosed is a carrier of a developer, which is characterized in that the current value observed when a direct current is applied under a voltage of 200 V is 0.8 to 2.0 .mu.A and the relaxation time is in the range of from 4.0 to 6.0 milliseconds, that is, the characteristic values in the dynamic state, for example, in a developing apparatus, are kept with certain ranges. If this developer carrier is used, an image having a high quality can be obtained without occurrence of troubles often caused in conventional developers, such as carrier dragging (transfer of the carrier to a photosensitive material together with the toner), fogging (transfer of the toner to the background of a copying sheet) and letter thinning.

公开(公告)号：US06806011B2

公开(公告)日：2004-10-19

申请号：US10716434

申请日：2003-11-20

申请人： Takashi Teshima ,  Masaki Kato ,  Takatomo Fukumoto

发明人： Takashi Teshima ,  Masaki Kato ,  Takatomo Fukumoto

IPC分类号： G03G900

CPC分类号： G03G9/09342 ,  G03G9/08 ,  G03G9/09314 ,  G03G9/09335 ,  G03G9/09392 ,  G03G9/097

摘要： 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.

公开(公告)号：US06686112B2

公开(公告)日：2004-02-03

申请号：US09959952

申请日：2001-11-13

申请人： Takashi Teshima ,  Masaki Kato ,  Takatomo Fukumoto

发明人： Takashi Teshima ,  Masaki Kato ,  Takatomo Fukumoto

IPC分类号： G03G908

CPC分类号： G03G9/09342 ,  G03G9/08 ,  G03G9/09314 ,  G03G9/09335 ,  G03G9/09392 ,  G03G9/097

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08592125B2

公开(公告)日：2013-11-26

申请号：US12708390

申请日：2010-02-18

申请人： Takashi Teshima

发明人： Takashi Teshima

IPC分类号： G03G9/13

CPC分类号： G03G9/125 ,  G03G9/131 ,  G03G9/132 ,  G03G9/135 ,  G03G9/1355 ,  G03G2215/0132 ,  G03G2215/0658

摘要： Provided is a liquid developer containing toner particles and an insulating liquid containing an epoxy modified fatty acid alkyl ester.

摘要翻译： 提供了含有调色剂颗粒和含有环氧改性脂肪酸烷基酯的绝缘液体的液体显影剂。

公开(公告)号：US08142974B2

公开(公告)日：2012-03-27

申请号：US12405523

申请日：2009-03-17

申请人： Yoshihiro Ueno ,  Takashi Teshima ,  Masahiro Oki

发明人： Yoshihiro Ueno ,  Takashi Teshima ,  Masahiro Oki

IPC分类号： G03G9/12

CPC分类号： G03G15/10 ,  G03G9/132 ,  G03G9/133 ,  G03G9/135 ,  G03G9/1355 ,  G03G2215/0602 ,  G03G2215/0658

摘要： A liquid developer is provided. The liquid developer comprises an insulation liquid, toner particles dispersed in the insulation liquid, a dispersant dissolved in the insulation liquid; and a charge control agent dissolved in the insulation liquid. The charge control agent is represented by the following chemical formula (I): wherein in the chemical formula (I) R1 represents an alkyl group or alkenyl group having a carbon number in the range of 8 to 22, and R2 represents a hydroxyalkyl group. The liquid developer has both superior dispersibility and a charge characteristic of toner particles. Further, an image forming apparatus is also provided.

摘要翻译： 提供液体显影剂。 液体显影剂包括绝缘液体，分散在绝缘液体中的调色剂颗粒，溶解在绝缘液体中的分散剂; 和溶解在绝缘液体中的电荷控制剂。 电荷控制剂由以下化学式（I）表示：其中，在化学式（I）中，R 1表示碳数为8〜22的烷基或烯基，R2表示羟烷基。 液体显影剂具有优异的分散性和调色剂颗粒的带电特性。 此外，还提供了一种图像形成装置。

公开(公告)号：US08080355B2

公开(公告)日：2011-12-20

申请号：US12032568

申请日：2008-02-15

申请人： Takashi Teshima ,  Koji Akioka ,  Ken Ikuma

发明人： Takashi Teshima ,  Koji Akioka ,  Ken Ikuma

IPC分类号： G03G9/00

CPC分类号： G03G9/12 ,  G03G9/125 ,  G03G9/13 ,  G03G9/132

摘要： A liquid developer includes an insulation liquid containing a fatty acid monoester, and toner particles comprised of a polyester resin. By using the liquid developer, it is possible to provide superior fixing characteristic of toner particles to a recording medium. An image forming apparatus that can suitably use such a liquid developer is also provided.

摘要翻译： 液体显影剂包括含有脂肪酸单酯的绝缘液和由聚酯树脂组成的调色剂颗粒。 通过使用液体显影剂，可以向调色剂颗粒提供优异的调色剂颗粒的固定特性。 还提供了可以适当地使用这种液体显影剂的图像形成装置。

公开(公告)号：US07635550B2

公开(公告)日：2009-12-22

申请号：US11372236

申请日：2006-03-09

申请人： Takashi Teshima

发明人： Takashi Teshima

IPC分类号： G03G9/125

CPC分类号： G03G9/12 ,  G03G9/081 ,  G03G9/0819 ,  G03G9/125 ,  G03G9/13

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20090214976A1

公开(公告)日：2009-08-27

申请号：US11813580

申请日：2006-01-12

申请人： Takashi Teshima ,  Satoru Miura

发明人： Takashi Teshima ,  Satoru Miura

IPC分类号： G03G9/08 ,  G03G5/00 ,  G03G9/00

CPC分类号： G03G9/125 ,  G03G9/12 ,  G03G9/13

摘要： 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.

摘要翻译： 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。