公开(公告)号：US20120045246A1

公开(公告)日：2012-02-23

申请号：US13232021

申请日：2011-09-14

Applicant: Teruyuki MITSUMORI ,  Kozo ISHIO ,  Hiroaki TAKAMURA ,  Masaya OOTA ,  Shiho SANO ,  Takeshi OOWADA ,  Masakazu SUGIHARA ,  Teruki SENOKUTI ,  Shiro YASUTOMI ,  Yumi HIRABARU

Inventor： Teruyuki MITSUMORI ,  Kozo ISHIO ,  Hiroaki TAKAMURA ,  Masaya OOTA ,  Shiho SANO ,  Takeshi OOWADA ,  Masakazu SUGIHARA ,  Teruki SENOKUTI ,  Shiro YASUTOMI ,  Yumi HIRABARU

IPC: G03G15/00

CPC classification number: G03G13/08 ,  G03G9/0819 ,  G03G15/08

Abstract: An image forming apparatus containing an electrophotographic photoreceptor and a toner for developing an electrostatic charge image, where the electrophotographic photoreceptor has an undercoat layer containing metal oxide particles; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies the following formula (1): Dns≦0.233EXP(17.3/Dv50)  (1) where Dv50 is the volume median diameter (μm) of the toner, and Dns is the percentage in number of toner particles having a particle diameter of from 2.00 μm to 3.56 μm.

Abstract translation: 一种包含电子照相感光体和用于显影静电荷图像的调色剂的成像设备，其中电子照相感光体具有含有金属氧化物颗粒的底涂层; 用于显影静电荷图像的调色剂是用于显影含有在水性介质中形成的调色剂基质颗粒的静电荷图像的调色剂; 调色剂的体积中值粒径（Dv50）为4.0μm〜7.0μm; 并且体积中值粒径（Dv50）与粒径为2.00μm〜3.56μm的调色剂粒子的数量（Dns）的关系满足下式（1）：Dns＆nlE; 0.233EXP（17.3 / Dv50） （1）其中Dv50是调色剂的体积中值直径（μm），Dns是粒径为2.00μm至3.56μm的调色剂颗粒数的百分数。

公开(公告)号：US08064796B2

公开(公告)日：2011-11-22

申请号：US12295320

申请日：2007-03-30

Applicant: Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroaki Takamura ,  Masaya Ota ,  Shiho Sano ,  Takeshi Oowada ,  Masakazu Sugihara ,  Teruki Senokuti ,  Shiro Yasutomi ,  Yumi Hirabaru

Inventor： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroaki Takamura ,  Masaya Ota ,  Shiho Sano ,  Takeshi Oowada ,  Masakazu Sugihara ,  Teruki Senokuti ,  Shiro Yasutomi ,  Yumi Hirabaru

IPC: G03G15/06 ,  G03G9/08

CPC classification number: G03G13/08 ,  G03G9/0819 ,  G03G15/08

Abstract: To provide an image forming apparatus which is able to improve image quality while suppressing soiling of image white parts, scattering in the apparatus, streaks, fading, etc. due to non-uniformity in the particle size distribution of a toner or mismatching between a toner and a photoreceptor, and which has good cleaning properties, and even when a high speed printing machine is used, is able to reduce a problem of soiling, etc. in long-term use and provide excellent image stability.An image forming apparatus comprising an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, and a toner for developing an electrostatic charge image, wherein the photosensitive layer of the electrophotographic photoreceptor contains a phthalocyanine obtained via an acid paste step; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies the following formula (1): Dns≦0.233 EXP(17.3/Dv50)  (1).

Abstract translation: 为了提供能够提高图像质量的图像形成装置，同时抑制图像白色部分的污染，由于调色剂的粒度分布不均匀而导致的装置散射，条纹，褪色等，或者调色剂的不匹配 和感光体，并且具有良好的清洁性能，并且即使使用高速印刷机，能够在长期使用中减少污渍等问题，并且提供优异的图像稳定性。 一种图像形成装置，包括在导电性基体上具有感光层的电子照相感光体和静电荷图像显影用调色剂，其中，电子照相感光体的感光层含有通过酸性糊剂步骤得到的酞菁; 用于显影静电荷图像的调色剂是用于显影含有在水性介质中形成的调色剂基质颗粒的静电荷图像的调色剂; 调色剂的体积中值粒径（Dv50）为4.0μm〜7.0μm; 体积中值粒径（Dv50）与粒径为2.00μm〜3.56μm的调色剂粒子的数量（Dns）的关系满足下式（1）：Dns＆nlE; 0.233 EXP（17.3 / Dv50） （1）。

公开(公告)号：US20100316411A1

公开(公告)日：2010-12-16

申请号：US12849461

申请日：2010-08-03

Applicant: Teruyuki MITSUMORI ,  Kozo ISHIO ,  Hiroaki TAKAMURA ,  Masaya OOTA ,  Shiho SANO ,  Takeshi OOWADA ,  Masakazu SUGIHARA ,  Teruki SENOKUTI ,  Shiro YASUTOMI ,  Yumi HIRABARU

Inventor： Teruyuki MITSUMORI ,  Kozo ISHIO ,  Hiroaki TAKAMURA ,  Masaya OOTA ,  Shiho SANO ,  Takeshi OOWADA ,  Masakazu SUGIHARA ,  Teruki SENOKUTI ,  Shiro YASUTOMI ,  Yumi HIRABARU

IPC: G03G15/00

CPC classification number: G03G13/08 ,  G03G9/0819 ,  G03G15/08

Abstract: An image forming apparatus comprising an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, and a toner for developing an electrostatic charge image, wherein the photosensitive layer of the electrophotographic photoreceptor contains a phthalocyanine obtained via an acid paste step; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies the following formula (1): Dns≦0.233 EXP(17.3/Dv50)  (1)

Abstract translation: 一种图像形成装置，包括在导电性基体上具有感光层的电子照相感光体和静电荷图像显影用调色剂，其中，电子照相感光体的感光层含有通过酸性糊剂步骤得到的酞菁; 用于显影静电荷图像的调色剂是用于显影含有在水性介质中形成的调色剂基质颗粒的静电荷图像的调色剂; 调色剂的体积中值粒径（Dv50）为4.0μm〜7.0μm; 体积中值粒径（Dv50）与粒径为2.00μm〜3.56μm的调色剂粒子的数量（Dns）的关系满足下式（1）：Dns＆nlE; 0.233 EXP（17.3 / Dv50） （1）

公开(公告)号：US20100209136A1

公开(公告)日：2010-08-19

申请号：US12526270

申请日：2008-02-06

Applicant: Tadashi Mizushima ,  Hiroaki Takamura ,  Atsuo Saita

Inventor： Tadashi Mizushima ,  Hiroaki Takamura ,  Atsuo Saita

IPC: G03G21/16 ,  C08G64/04 ,  C08G65/00 ,  G03G5/04 ,  G03G15/00

CPC classification number: G03G5/0564 ,  G03G5/14756

Abstract: Disclosed is a coating liquid for producing an electrophotographic photosensitive body, which is excellent in electrical characteristics and mechanical durability, while being excellent in coatability and liquid stability. Also disclosed are an electrophotographic photosensitive body produced by using such a coating liquid, an image-forming device comprising such an electrophotographic photosensitive body, and an electrophotographic photosensitive body cartridge. Specifically disclosed is a coating liquid for producing an electrophotographic photosensitive body, which is characterized by containing a copolymerized polycarbonate resin and asolvent A having a boiling point of not less than 80#C but not more than 150#C. The copolymerized polycarbonate resin has a repeating unit represented by the formula (1) below, while containing not more than 10% by weight of a repeating unit having a biphenyl structure. The average of repetitions of the unit represented by the formula (1) is not more than 10.

Abstract translation: 公开了用于制造电子照相感光体的涂布液，其电气特性和机械耐久性优异，同时涂布性和液体稳定性优异。 还公开了通过使用这种涂布液制造的电子照相感光体，包含这种电子照相感光体的图像形成装置和电子照相感光体盒。 具体公开了一种用于制造电子照相感光体的涂布液，其特征在于含有共聚聚碳酸酯树脂和沸点不低于80℃但不超过150℃的溶剂A. 共聚聚碳酸酯树脂具有由下式（1）表示的重复单元，同时含有不大于10重量％的具有联苯结构的重复单元。 由式（1）表示的单位的重复平均值不大于10。

公开(公告)号：US20090180807A1

公开(公告)日：2009-07-16

申请号：US12295320

申请日：2007-03-30

Applicant: Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroaki Takamura ,  Masaya Oota ,  Shiho Sano ,  Takeshi Oowada ,  Masakazu Sugihara ,  Teruki Senokuti ,  Shiro Yasutomi ,  Yumi Hirabaru

Inventor： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroaki Takamura ,  Masaya Oota ,  Shiho Sano ,  Takeshi Oowada ,  Masakazu Sugihara ,  Teruki Senokuti ,  Shiro Yasutomi ,  Yumi Hirabaru

IPC: G03G15/04 ,  G03G15/08

CPC classification number: G03G13/08 ,  G03G9/0819 ,  G03G15/08

Abstract: To provide an image forming apparatus which is able to improve image quality while suppressing soiling of image white parts, scattering in the apparatus, streaks, fading, etc. due to non-uniformity in the particle size distribution of a toner or mismatching between a toner and a photoreceptor, and which has good cleaning properties, and even when a high speed printing machine is used, is able to reduce a problem of soiling, etc. in long-term use and provide excellent image stability.An image forming apparatus comprising an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, and a toner for developing an electrostatic charge image, wherein the photosensitive layer of the electrophotographic photoreceptor contains a phthalocyanine obtained via an acid paste step; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies the following formula (1): Dns≦0.233 EXP(17.3/Dv50)  (1)

Abstract translation: 为了提供能够提高图像质量的图像形成装置，同时抑制图像白色部分的污染，由于调色剂的粒度分布不均匀而导致的装置散射，条纹，褪色等，或者调色剂的不匹配 和感光体，并且具有良好的清洁性能，并且即使使用高速印刷机，能够在长期使用中减少污渍等问题，并且提供优异的图像稳定性。 一种图像形成装置，包括在导电性基体上具有感光层的电子照相感光体和静电荷图像显影用调色剂，其中，电子照相感光体的感光层含有通过酸性糊剂步骤得到的酞菁; 用于显影静电荷图像的调色剂是用于显影含有在水性介质中形成的调色剂基质颗粒的静电荷图像的调色剂; 调色剂具有4.0μm至7.0μm的体积中值直径（Dv50）; 体积中值粒径（Dv50）与粒径为2.00μm〜3.56μm的调色剂粒子的数量（Dns）的关系满足下式（1）：＆lt; “In-line formula”end =“lead”？> Dns <= 0.233 EXP（17.3 / Dv50）（1）<？in-line-formula description =“In-line Formulas”end =“tail”？>

公开(公告)号：US5932385A

公开(公告)日：1999-08-03

申请号：US956393

申请日：1997-10-23

Applicant: Hiroaki Takamura ,  Takahiro Choda ,  Itaru Ogawa ,  Mamoru Nozomi

Inventor： Hiroaki Takamura ,  Takahiro Choda ,  Itaru Ogawa ,  Mamoru Nozomi

IPC: G03G5/047 ,  G03G5/06 ,  G03G5/14

CPC classification number: G03G5/047 ,  G03G5/0696 ,  G03G5/144

Abstract: An electrophotographic copying method, which comprises conducting each process of at least charging, exposing to light, developing and transferring, characterized in that the photoreceptor has at least an undercoat layer and a photosensitive layer on an electroconductive substrate, wherein the undercoat layer contains a semiconductive material having a band gap of at least 2.2 eV and a binder resin, the photosensitive layer contains at least a phthalocyanine compound as a charge-generation material, and image-formation is carried out from the first revolution of the photoreceptor.

Abstract translation: 一种电子照相复印方法，其包括进行至少充电，曝光，显影和转印的每个处理，其特征在于，所述感光体在导电基材上具有至少底涂层和感光层，其中底涂层含有半导体 具有至少2.2eV的带隙的材料和粘合剂树脂，感光层至少含有酞菁化合物作为电荷产生材料，并且从感光体的第一圈进行成像。

公开(公告)号：US08974998B2

公开(公告)日：2015-03-10

申请号：US13232021

申请日：2011-09-14

Applicant: Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroaki Takamura ,  Masaya Oota ,  Shiho Sano ,  Takeshi Oowada ,  Masakazu Sugihara ,  Teruki Senokuti ,  Shiro Yasutomi ,  Yumi Hirabaru

Inventor： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroaki Takamura ,  Masaya Oota ,  Shiho Sano ,  Takeshi Oowada ,  Masakazu Sugihara ,  Teruki Senokuti ,  Shiro Yasutomi ,  Yumi Hirabaru

IPC: G03G9/08 ,  G03G15/08 ,  G03G13/08

CPC classification number: G03G13/08 ,  G03G9/0819 ,  G03G15/08

Abstract: A method of forming an image including an electrophotographic photoreceptor and a toner, wherein a photosensitive layer in the electrophotographic photoreceptor includes an undercoat layer including metal oxide particles, a charge generation layer including hydroxygallium phthalocyanine, and a charge transport layer, and the toner contains toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies—0.0517EXP(22.4/Dv50)≦Dns≦0.233EXP(17.3/Dv50) where Dv50 is the volume median diameter (μm) of the toner, and Dns is the percentage in number of toner particles having a particle diameter of from 2.00 μm to 3.56 μm.

Abstract translation: 一种形成包括电子照相感光体和调色剂的图像的方法，其中电子照相感光体中的感光层包括包含金属氧化物颗粒的底涂层，包含羟基镓酞菁的电荷产生层和电荷传输层，并且调色剂含有调色剂 在水性介质中形成的基质颗粒; 调色剂的体积中值粒径（Dv50）为4.0μm〜7.0μm; 体积中值粒径（Dv50）与粒径为2.00μm〜3.56μm的调色剂粒子的数量（Dns）的关系满足-0.0517EXP（22.4 / Dv50）＆nlE; Dns＆NlE; 0.233EXP（17.3 / Dv50）其中Dv50是调色剂的体积中值直径（μm），Dns是粒径为2.00μm至3.56μm的调色剂颗粒数的百分比。

公开(公告)号：US20130309604A1

公开(公告)日：2013-11-21

申请号：US13933918

申请日：2013-07-02

Applicant: Mitsuo WADA ,  Teruyuki Mitsumori ,  Hiroaki Takamura ,  Masaya Oota ,  Teruki Senokuchi ,  Shiho Sano ,  Masakazu Sugihara ,  Shiro Yasutomi ,  Yumi Hirabaru ,  Takeshi Oowada

Inventor： Mitsuo WADA ,  Teruyuki Mitsumori ,  Hiroaki Takamura ,  Masaya Oota ,  Teruki Senokuchi ,  Shiho Sano ,  Masakazu Sugihara ,  Shiro Yasutomi ,  Yumi Hirabaru ,  Takeshi Oowada

IPC: G03G13/08

CPC classification number: G03G13/08 ,  G03G5/047 ,  G03G5/0696 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/0918 ,  G03G2215/00957

Abstract: An image-forming apparatus including an electrophotographic photoreceptor of which photosensitive layer contains oxytitanium phthalocyanine showing main diffraction peaks at Bragg angles (2θ) of 9.0° and 27.2° and at least one main diffraction peak in the range of 9.3° to 9.8° to CuKα rays, and the toner satisfies all the following requirements (1) to (3): (1) the volume median diameter (Dv50) is 4.0 μm or more and 7.0 μm or less, (2) the average sphericity is 0.93 or more, and (3) the relation between the volume median diameter (Dv50) and the content (% by number: Dns) of toner particles of 2.00 μm or more and 3.56 μm or less satisfies Dns≦0.233EXP(17.3/Dv50).

Abstract translation: 包括电子照相感光体的图像形成装置，其感光层含有氧钛酞菁，其在布拉格角（2θ）为9.0°和27.2°的主要衍射峰以及9.3Kg至9.8°范围内的至少一个主要衍射峰 并且调色剂满足以下所有要求（1）至（3）：（1）体积中值粒径（Dv50）为4.0μm以上至7.0μm以下，（2）平均球形度为0.93以上， 和（3）2.00μm以上至3.56μm以下的调色剂颗粒的体积中值粒径（Dv50）与含量（％（数量：Dns））之间的关系满足Dns@0.233EXP（17.3 / Dv50）。

公开(公告)号：US20110311271A1

公开(公告)日：2011-12-22

申请号：US13155660

申请日：2011-06-08

Applicant: Hiroaki TAKAMURA

Inventor： Hiroaki TAKAMURA

IPC: G03G15/00 ,  G03G21/18 ,  G03G5/04

CPC classification number: G03G5/0564 ,  G03G5/10 ,  G03G5/102 ,  G03G2215/00957

Abstract: It is to provide an electrophotographic photoreceptor which is excellent in cleaning properties and does not cause a problem of adhesiveness with a substrate in the case where an electrophotographic photoreceptor having a substrate whose outer diameter is small. There are provided an electrophotographic photoreceptor comprising a conductive substrate and a photosensitive layer provided thereon, wherein the conductive substrate has a cylindrical shape having an outer diameter of 25 mm or less and the photosensitive layer contains a copolycarbonate resin having a specific repeating structure as well as an image-forming apparatus having the electrophotographic photoreceptor mounted thereon.

Abstract translation: 提供一种电子照相感光体，其具有优异的清洁性能，并且在具有外径小的基板的电子照相感光体的情况下，不会引起与基板的粘附性的问题。 提供了一种电子照相感光体，其包括导电基底和设置在其上的感光层，其中导电基底具有外径为25mm或更小的圆柱形，感光层含有具有特定重复结构的共聚碳酸酯树脂以及 具有安装在其上的电子照相感光体的图像形成装置。

公开(公告)号：US20110294055A1

公开(公告)日：2011-12-01

申请号：US13149215

申请日：2011-05-31

Applicant: Hiroaki TAKAMURA

Inventor： Hiroaki TAKAMURA

IPC: G03G5/07

CPC classification number: G03G5/0564

Abstract: It is to provide a sheet-shaped electrophotographic photoreceptor which has an uncoated area, is good in mechanical adhesiveness between the photosensitive layer and the sheet-shaped conductive substrate but excellent ease of peeling with a solvent, and is further good in electrical properties. The electrophotographic photoreceptor comprises a sheet-shaped conductive substrate and a photosensitive layer provided thereon, wherein the electrophotographic photoreceptor contains a photosensitive layer-uncoated area within the sheet surface, and the photosensitive layer contains a copolycarbonate resin having an extremely restricted specific structure.

Abstract translation: 提供具有未涂覆区域的片状电子照相感光体，感光层与片状导电性基材的机械粘合性良好，但溶剂易剥离性优异，电性能更好。 电子照相感光体包括片状导电性基材和设置在其上的感光层，其中电子照相感光体在片材表面内含有感光层未涂覆区域，感光层含有特别限制的结构的共聚碳酸酯树脂。