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    IMAGE FORMING APPARATUS AND IMAGE FORMATION METHOD
    1.
    发明公开
    IMAGE FORMING APPARATUS AND IMAGE FORMATION METHOD 审中-公开

    公开(公告)号：US20240134297A1

    公开(公告)日：2024-04-25

    申请号：US18489812

    申请日：2023-10-17

    申请人： KYOCERA Document Solutions Inc.

    发明人： Toru TAKATSUNA

    IPC分类号： G03G9/083 ,  G03G9/097 ,  G03G15/08

    CPC分类号： G03G9/0839 ,  G03G9/0836 ,  G03G9/0838 ,  G03G9/09708 ,  G03G15/0822

    摘要： An image forming apparatus includes a magnetic toner, an image bearing member, and a development device. The image bearing member is an amorphous silicon photosensitive drum. The magnetic toner includes toner particles. The toner particles each include a toner mother particle containing a binder resin and a magnetic powder and alumina particles attached to a surface of the toner mother particle. The alumina particles each include a core containing alumina and a conductive layer covering the core. The conductive layer contains antimony tin oxide. The alumina particles have a number average primary particle diameter of at least 0.15 μm and no greater than 0.50 μm. The alumina particles have a specific resistance of no greater than 250 Ω·cm. The alumina particles have an X-ray intensity ratio of at least 0.25 and no greater than 0.35.

    MAGNETIC TONER
    4.
    发明申请
    MAGNETIC TONER 有权
    磁性墨粉

    公开(公告)号：US20150309432A1

    公开(公告)日：2015-10-29

    申请号：US14691514

    申请日：2015-04-20

    申请人： CANON KABUSHIKI KAISHA

    发明人： Daisuke Tsujimoto ,  Yoshihiro Ogawa ,  Toru Takahashi ,  Wakashi Iida

    IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/087

    CPC分类号： G03G9/0819 ,  G03G9/0833 ,  G03G9/0838 ,  G03G9/08755

    摘要： Provided is a magnetic toner, including a toner particle containing a binder resin and a magnetic iron oxide particle, in which: the binder resin includes a resin having a polyester unit in which at least one kind of aliphatic compound selected from the group consisting of an aliphatic monocarboxylic acid having 30 to 102 carbon atoms and an aliphatic monoalcohol having 30 to 102 carbon atoms is condensed at an end of the polyester unit; a content of the magnetic iron oxide particle is from 30 to 80 parts by mass with respect to 100 parts by mass of the binder resin; and the magnetic iron oxide particle satisfies the following conditions: (i) a number-based median diameter D50 is from 0.05 to 0.15 μm; (ii) a number-based ratio D10/D50 is from 0.40 to 1.00; and (iii) a number-based ratio D90/D50 is from 1.00 to 1.50.

    摘要翻译： 提供了一种磁性调色剂，其包括含有粘合剂树脂和磁性氧化铁颗粒的调色剂颗粒，其中：粘合剂树脂包括具有聚酯单元的树脂，其中至少一种选自以下的脂族化合物： 具有30至102个碳原子的脂族单羧酸和具有30至102个碳原子的脂族一元醇在聚酯单元的末端被冷凝; 相对于100质量份粘合剂树脂，磁性氧化铁颗粒的含量为30〜80质量份。 磁性氧化铁粒子满足以下条件：（i）数均中值粒径D50为0.05〜0.15μm; （ii）数量比D10 / D50为0.40〜1.00; 和（iii）基于数的比例D90 / D50为1.00至1.50。

    BLACK MAGNETIC IRON OXIDE PARTICLES
    6.
    发明申请
    BLACK MAGNETIC IRON OXIDE PARTICLES 有权
    黑色磁性氧化物颗粒

    公开(公告)号：US20120064449A1

    公开(公告)日：2012-03-15

    申请号：US13262105

    申请日：2010-03-30

    申请人： Ryo Iwai ,  Mamoru Kamigaki ,  Nobuya Shimo ,  Naoki Uchida

    发明人： Ryo Iwai ,  Mamoru Kamigaki ,  Nobuya Shimo ,  Naoki Uchida

    IPC分类号： G03G9/083 ,  C01G49/02 ,  B32B5/16

    CPC分类号： H01F1/36 ,  B82Y30/00 ,  C01G49/08 ,  C01P2004/03 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/42 ,  G03G9/0833 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/0838 ,  H01F1/344 ,  Y10T428/2982

    摘要： The present invention relates to black magnetic iron oxide particles comprising magnetite as a main component, wherein when the black magnetic iron oxide particles are molded into a tablet shape, an electric resistance value of the tablet in an alternating current electric field is controlled to produce an impedance of not less than 2×106 Ωcm as measured in a characteristic frequency range thereof. The black magnetic iron oxide particles according to the present invention can provide a toner capable of exhibiting a good charging performance and a uniform charging property under the high-temperature and high-humidity conditions, so that when developing an electrostatic latent image therewith, it is possible to obtain toner images having a high resolution or definition, and further the use of heavy metal elements in the black magnetic iron oxide particles can be minimized.

    摘要翻译： 本发明涉及包含磁铁矿作为主要成分的黑色磁性氧化铁颗粒，其中当将黑色磁性氧化铁颗粒模制成片状时，控制片剂在交流电场中的电阻值，以产生 在其特征频率范围内测量的阻抗不小于2×106＆OHgr; cm。 根据本发明的黑色磁性氧化铁颗粒可以提供能够在高温和高湿度条件下表现出良好的充电性能和均匀充电性能的调色剂，使得当与其显影静电潜像时，它是 可以获得具有高分辨率或清晰度的调色剂图像，并且还可以使黑色磁性氧化铁颗粒中的重金属元素的使用最小化。

    METHOD FOR PRODUCING TONER
    8.
    发明申请
    METHOD FOR PRODUCING TONER 有权
    生产调色剂的方法

    公开(公告)号：US20100047707A1

    公开(公告)日：2010-02-25

    申请号：US12544839

    申请日：2009-08-20

    申请人： Tomoaki UEDA ,  Masanori Abe

    发明人： Tomoaki UEDA ,  Masanori Abe

    IPC分类号： G03G9/083 ,  G03G9/087 ,  G03G13/20

    CPC分类号： G03G15/2007 ,  G03G9/0804 ,  G03G9/0833 ,  G03G9/0836 ,  G03G9/0838

    摘要： A toner which can efficiently induce high-frequency magnetic induction heating by Neel relaxation and/or Brown relaxation is provided. A toner including a core particle containing a thermoplastic polymer material and superparamagnetic ferrite fine particles having a particle diameter of less than 100 nm which adhere to the surfaces of the core particle is manufactured by directly forming the superparamagnetic ferrite fine particles having a particle diameter of less than 100 nm on the surfaces of the core particle so that the superparamagnetic ferrite fine particles having a particle diameter of less than 100 nm are not in contact with each other. As a result, the toner is prevented from being scattered due to the influence of a magnetic field, so that a high quality image is formed.

    摘要翻译： 提供了可以通过Neel松弛和/或棕色弛豫有效地诱导高频磁感应加热的调色剂。 通过直接形成粒径较小的超顺磁性铁氧体微粒，制造含有含有热塑性聚合物材料的核心颗粒和粒径小于100nm的超顺磁铁氧体细颗粒的调色剂 在核心颗粒的表面上超过100nm，使得粒径小于100nm的超顺磁铁氧体细颗粒彼此不接触。 结果，防止调色剂由于磁场的影响而被散射，从而形成高质量的图像。

    Magnetic toner
    9.
    发明申请
    Magnetic toner 有权
    磁性调色剂

    公开(公告)号：US20070072102A1

    公开(公告)日：2007-03-29

    申请号：US10577148

    申请日：2004-10-28

    申请人： Tadashi Dojo ,  Nene Dojo ,  Tomohisa Sano

    发明人： Tadashi Dojo ,  Nene Dojo ,  Tomohisa Sano

    IPC分类号： G03G9/083

    CPC分类号： G03G9/0837 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0834 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/0838 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797

    摘要： To provide a magnetic toner which: enables a stable image density to be obtained irrespective of a use environment; and exhibits excellent low-temperature fixability, little image deterioration upon fixation, high coloring power, and a reduced toner consumption. The present invention relates to a magnetic toner containing at least: a binder resin; and a magnetic body. The binder resin contains a polyester unit. The toner has a weight average particle size of 5.0 to 9.0 μm, a true specific gravity of 1.3 to 1.7 g/cm3, and a saturated magnetization of 20 to 35 Am2/kg in a magnetic field of 796 kA/m. The dielectric loss tangent (tan δ) of the toner satisfies (tan δH−tan δL)/tan δL≦0.20 at 100 kHz.

    摘要翻译： 提供一种能够获得稳定的图像浓度而不考虑使用环境的磁性调色剂; 并且具有优异的低温定影性，定影时的图像变差小，着色力高，并且降低了调色剂消耗。 本发明涉及至少含有粘合剂树脂的磁性调色剂; 和磁性体。 粘合剂树脂含有聚酯单元。 调色剂的重均粒径为5.0〜9.0μm，真比重为1.3〜1.7g / cm 3，饱和磁化强度为20〜35Am 2 / > / kg，磁场为796 kA / m。 调色剂的介电损耗角正切（tanδ）满足（tanδ> H> T>ΔL）/tanδL<= 0.20在 100 kHz。