公开(公告)号：US20080026310A1

公开(公告)日：2008-01-31

申请号：US11827115

申请日：2007-07-10

申请人： Daisuke Kuboshima ,  Jun Azuma ,  Yoshio Inagaki ,  Junichiro Otsubo ,  Keiji Maruo

发明人： Daisuke Kuboshima ,  Jun Azuma ,  Yoshio Inagaki ,  Junichiro Otsubo ,  Keiji Maruo

IPC分类号： G03G15/04 ,  C07D207/50 ,  C30B7/06

CPC分类号： C09B67/0026 ,  C09B67/0016 ,  G03G5/0696

摘要： The invention provides an oxo-titanylphthalocyanine crystal which is stable, is superior in dispersibility in a photoreceptive layer and efficiently contributes to improvements in sensitivity and charge retention rate of an electrophotographic photoreceptor when it is used as a charge generating agent, a method for producing the oxo-titanylphthalocyanine crystal, and an electrophotographic photoreceptor. The oxo-titanylphthalocyanine crystal has predetermined optical characteristics and thermal properties and is produced by a production method including the following steps (a) to (d): (a) a step of dissolving a crude oxo-titanylphthalocyanine crystal in an acid to obtain an oxo-titanylphthalocyanine solution; (b) a step of adding the oxo-titanylphthalocyanine solution dropwise in a poor solvent to obtain a wet cake; (c) a step of washing the wet cake with an alcohol having 1 to 4 carbon atoms; and (d) a step of stirring the washed wet cake under heating in a nonaqueous solvent to obtain an oxo-titanylphthalocyanine crystal.

摘要翻译： 本发明提供了一种稳定的氧代 - 钛氧基酞菁晶体，其在感光层中的分散性优异，并且有效地提高了当用作电荷产生剂时电子照相感光体的灵敏度和电荷保持率的提高， 氧代 - 钛氧基酞菁晶体和电子照相感光体。 氧代 - 钛氧基酞菁晶体具有预定的光学特性和热性质，并且通过包括以下步骤（a）至（d）的制备方法制备：（a）将粗的氧代 - 氧代 - 酞菁结晶溶解在酸中以获得 氧代 - 钛氧基酞菁溶液; （b）将氧代 - 钛氧基酞菁溶液滴加到不良溶剂中以获得湿滤饼的步骤; （c）用具有1至4个碳原子的醇洗涤湿滤饼的步骤; 和（d）在非水溶剂中加热下搅拌洗涤的湿滤饼以获得氧代 - 氧化钛酞菁晶体的步骤。

公开(公告)号：US08686133B2

公开(公告)日：2014-04-01

申请号：US13546077

申请日：2012-07-11

申请人： Daisuke Kuboshima ,  Jun Azuma ,  Yoshio Inagaki ,  Junichiro Otsubo ,  Keiji Maruo

发明人： Daisuke Kuboshima ,  Jun Azuma ,  Yoshio Inagaki ,  Junichiro Otsubo ,  Keiji Maruo

IPC分类号： C09B47/067

CPC分类号： C09B67/0026 ,  C09B67/0016 ,  G03G5/0696

摘要： The invention provides an oxo-titanylphthalocyanine crystal which is stable, is superior in dispersibility in a photoreceptive layer and efficiently contributes to improvements in sensitivity and charge retention rate of an electrophotographic photoreceptor when it is used as a charge generating agent, a method for producing the oxo-titanylphthalocyanine crystal, and an electrophotographic photoreceptor. The oxo-titanylphthalocyanine crystal has predetermined optical characteristics and thermal properties and is produced by a production method including the following steps (a) to (d): (a) a step of dissolving a crude oxo-titanylphthalocyanine crystal in an acid to obtain an oxo-titanylphthalocyanine solution; (b) a step of adding the oxo-titanylphthalocyanine solution dropwise in a poor solvent to obtain a wet cake; (c) a step of washing the wet cake with an alcohol having 1 to 4 carbon atoms; and (d) a step of stirring the washed wet cake under heating in a nonaqueous solvent to obtain an oxo-titanylphthalocyanine crystal.

摘要翻译： 本发明提供了一种稳定的氧代 - 钛氧基酞菁晶体，其在感光层中的分散性优异，并且有效地提高了当用作电荷产生剂时电子照相感光体的灵敏度和电荷保持率的提高， 氧代 - 钛氧基酞菁晶体和电子照相感光体。 氧代 - 钛氧基酞菁晶体具有预定的光学特性和热性质，并且通过包括以下步骤（a）至（d）的制备方法制备：（a）将粗的氧代 - 氧代 - 酞菁结晶溶解在酸中以获得 氧代 - 钛氧基酞菁溶液; （b）将氧代 - 钛氧基酞菁溶液滴加到不良溶剂中以获得湿滤饼的步骤; （c）用具有1至4个碳原子的醇洗涤湿滤饼的步骤; 和（d）在非水溶剂中加热下搅拌洗涤的湿滤饼以获得氧代 - 氧化钛酞菁晶体的步骤。

公开(公告)号：US20070077507A1

公开(公告)日：2007-04-05

申请号：US11523370

申请日：2006-09-19

申请人： Junichiro Otsubo ,  Jun Azuma ,  Keiji Maruo ,  Yoshio Inagaki ,  Norio Nakai ,  Kazunari Hamasaki ,  Shiho Okawa

发明人： Junichiro Otsubo ,  Jun Azuma ,  Keiji Maruo ,  Yoshio Inagaki ,  Norio Nakai ,  Kazunari Hamasaki ,  Shiho Okawa

IPC分类号： G03G5/14

CPC分类号： G03G5/047 ,  G03G5/142 ,  G03G5/144

摘要： The present invention provides an electrophotographic photoconductor which can reduce the generation of fogging under a high-temperature and high-moisture condition and can be easily manufactured, and a method of manufacturing such an electrophotographic photoconductor. In an electrophotographic photoconductor which includes a support base body, an intermediate layer and a photoconductor layer and a manufacturing method of such an electrophotographic photoconductor, the intermediate layer contains titanium oxide and a binding resin and a ΔL value of the intermediate layer satisfies a following relationship formula (1) or a ΔA value of the intermediate layer satisfies a following relationship formula (2), that is, −5.0≦ΔL≦0 (1) and ΔA≦0.055 (2), wherein the ΔL value is a value which is obtained by subtracting an L value (a parameter value which is measured by a color-difference meter in accordance with JIS Z 8722) which is measured with respect to a single support base body from the L value which is measured in a state that the intermediate layer is formed on the support base body, and the ΔA value is a value which is obtained by subtracting reflection absorbance (a parameter value which is measured by a color-difference meter) which is measured with respect to a single support base body from the reflection absorbance which is measured in a state that the intermediate layer is formed on the support base body.

摘要翻译： 本发明提供一种电子照相感光体，其可以在高温高湿条件下降低发烟，并且可以容易地制造，以及制造这种电照相感光体的方法。 在包括支撑基体，中间层和感光体层的电子照相感光体中，以及这种电子照相感光体的制造方法，中间层含有氧化钛和粘合树脂，中间层的ΔL值满足以下关系 式（1）或中间层的ΔA值满足关系式（2），即-5.0 <=ΔL<= 0（1）和ΔA<= 0.055（2），其中ΔL值为 通过从在一个状态下测量的L值中减去相对于单个支撑基体测量的L值（由根据JIS Z 8722测量的色差计的参数值）获得的值 中间层形成在支撑基体上，DeltaA值是通过减去反射吸光度（通过色差计测量的参数值）而获得的值 r），其从在支撑基体上形成中间层的状态下测量的反射吸光度相对于单个支撑体基体测量。

公开(公告)号：US20110046392A1

公开(公告)日：2011-02-24

申请号：US12924710

申请日：2010-10-01

申请人： Daisuke Kuboshima ,  Jun Azuma ,  Yoshio Inagaki ,  Junichiro Otsubo ,  Keiji Maruo

发明人： Daisuke Kuboshima ,  Jun Azuma ,  Yoshio Inagaki ,  Junichiro Otsubo ,  Keiji Maruo

IPC分类号： C07F7/28

CPC分类号： C09B67/0026 ,  C09B67/0016 ,  G03G5/0696

摘要： The invention provides an oxo-titanylphthalocyanine crystal which is stable, is superior in dispersibility in a photoreceptive layer and efficiently contributes to improvements in sensitivity and charge retention rate of an electrophotographic photoreceptor when it is used as a charge generating agent, a method for producing the oxo-titanylphthalocyanine crystal, and an electrophotographic photoreceptor. The oxo-titanylphthalocyanine crystal has predetermined optical characteristics and thermal properties and is produced by a production method including the following steps (a) to (d): (a) a step of dissolving a crude oxo-titanylphthalocyanine crystal in an acid to obtain an oxo-titanylphthalocyanine solution; (b) a step of adding the oxo-titanylphthalocyanine solution dropwise in a poor solvent to obtain a wet cake; (c) a step of washing the wet cake with an alcohol having 1 to 4 carbon atoms; and (d) a step of stirring the washed wet cake under heating in a nonaqueous solvent to obtain an oxo-titanylphthalocyanine crystal.

摘要翻译： 本发明提供了一种稳定的氧代 - 钛氧基酞菁晶体，其在感光层中的分散性优异，并且有效地提高了当用作电荷产生剂时电子照相感光体的灵敏度和电荷保持率的提高， 氧代 - 钛氧基酞菁晶体和电子照相感光体。 氧代 - 钛氧基酞菁晶体具有预定的光学特性和热性质，并且通过包括以下步骤（a）至（d）的制备方法制备：（a）将粗的氧代 - 氧代 - 酞菁结晶溶解在酸中以获得 氧代 - 钛氧基酞菁溶液; （b）将氧代 - 钛氧基酞菁溶液滴加到不良溶剂中以获得湿滤饼的步骤; （c）用具有1至4个碳原子的醇洗涤湿滤饼的步骤; 和（d）在非水溶剂中加热下搅拌洗涤的湿滤饼以获得氧代 - 氧化钛酞菁晶体的步骤。

公开(公告)号：US08242261B2

公开(公告)日：2012-08-14

申请号：US12924710

申请日：2010-10-01

申请人： Daisuke Kuboshima ,  Jun Azuma ,  Yoshio Inagaki ,  Junichiro Otsubo ,  Keiji Maruo

发明人： Daisuke Kuboshima ,  Jun Azuma ,  Yoshio Inagaki ,  Junichiro Otsubo ,  Keiji Maruo

IPC分类号： C09B67/04

CPC分类号： C09B67/0026 ,  C09B67/0016 ,  G03G5/0696

摘要： The invention provides an oxo-titanylphthalocyanine crystal which is stable, is superior in dispersibility in a photoreceptive layer and efficiently contributes to improvements in sensitivity and charge retention rate of an electrophotographic photoreceptor when it is used as a charge generating agent, a method for producing the oxo-titanylphthalocyanine crystal, and an electrophotographic photoreceptor. The oxo-titanylphthalocyanine crystal has predetermined optical characteristics and thermal properties and is produced by a production method including the following steps (a) to (d): (a) a step of dissolving a crude oxo-titanylphthalocyanine crystal in an acid to obtain an oxo-titanylphthalocyanine solution; (b) a step of adding the oxo-titanylphthalocyanine solution dropwise in a poor solvent to obtain a wet cake; (c) a step of washing the wet cake with an alcohol having 1 to 4 carbon atoms; and (d) a step of stirring the washed wet cake under heating in a nonaqueous solvent to obtain an oxo-titanylphthalocyanine crystal.

摘要翻译： 本发明提供了一种稳定的氧代 - 钛氧基酞菁晶体，其在感光层中的分散性优异，并且有效地提高了当用作电荷产生剂时电子照相感光体的灵敏度和电荷保持率的提高， 氧代 - 钛氧基酞菁晶体和电子照相感光体。 氧代 - 钛氧基酞菁晶体具有预定的光学特性和热性质，并且通过包括以下步骤（a）至（d）的制备方法制备：（a）将粗的氧代 - 氧化钛酞菁结晶溶解在酸中以获得 氧代 - 钛氧基酞菁溶液; （b）将氧代 - 钛氧基酞菁溶液滴加到不良溶剂中以获得湿滤饼的步骤; （c）用具有1至4个碳原子的醇洗涤湿滤饼的步骤; 和（d）在非水溶剂中加热下搅拌洗涤的湿滤饼以获得氧代 - 氧化钛酞菁晶体的步骤。

公开(公告)号：US20080050666A1

公开(公告)日：2008-02-28

申请号：US11891861

申请日：2007-08-14

申请人： Junichiro Otsubo ,  Jun Azuma ,  Keiji Maruo ,  Yoshio Inagaki

发明人： Junichiro Otsubo ,  Jun Azuma ,  Keiji Maruo ,  Yoshio Inagaki

IPC分类号： G03G15/04 ,  G03G21/16

CPC分类号： G03G15/751

摘要： To provide an electrophotographic photoconductor which can effectively prevent the generation of exposure memory and the increase in residual potential by easily adjusting the electroconductivity in an intermediate layer, and an image forming apparatus using the electrophotographic photoconductor. An electrophotographic photoconductor comprising a base body, and an intermediate layer containing a titanium oxide and a binding resin and a photosensitive layer which are arranged on the base body, and an image forming apparatus using the same, wherein an average primary particle diameter of the titanium oxide is set to a value within the range of 5 to 30 nm, a thickness of the intermediate layer set to a value within the range of 0.5 to 3 μm, and the volume resistivity in the intermediate layer is set to a value within the range of 1×1010 to 5×1013 Ω·cm.

摘要翻译： 提供一种能够有效地防止产生曝光记忆和通过容易地调节中间层的导电性而增加残留电位的电子照相感光体，以及使用电子照相感光体的图像形成装置。 包括基体的电子照相感光体和布置在基体上的包含氧化钛和粘合树脂和感光层的中间层以及使用其的图像形成装置，其中钛的平均一次粒径 将氧化物设定为5〜30nm的范围内，将中间层的厚度设定为0.5〜3μm的范围内，将中间层的体积电阻率设定为该范围内的值 为1×10 10至5×10 3Ω·cm。

公开(公告)号：US08765337B2

公开(公告)日：2014-07-01

申请号：US11805588

申请日：2007-05-24

申请人： Keiji Maruo ,  Junichiro Otsubo ,  Jun Azuma

发明人： Keiji Maruo ,  Junichiro Otsubo ,  Jun Azuma

IPC分类号： G03G5/047

CPC分类号： G03G5/0696 ,  G03G5/047 ,  G03G5/0564 ,  G03G5/0596 ,  G03G5/0614

摘要： The present invention is to provide a multilayer type electrophotographic photoconductor capable of stably obtaining a high image quality image over a long term by restraining the exposure memory and the photo memory, and an image forming apparatus comprising such a multilayer type electrophotographic photoconductor. A multilayer type electrophotographic photoconductor comprising a charge generating layer containing at least a charge generating agent on a base member directly or via an intermediate layer, and a charge transporting layer containing at least a charge transporting agent and a binder resin formed successively, wherein the light absorption degree at a 680 nm wavelength light beam in the photoconductive layer of the multilayer type electrophotographic photoconductor is of a value of 0.8 or less, and the light absorption degree at a 450 nm wavelength light beam is of a value of 1.0 or more, and an image forming apparatus comprising such a multilayer type electrophotographic photoconductor are provided.

摘要翻译： 本发明提供一种能够通过抑制曝光存储器和光存储器而能够长期稳定地获得高图像质量图像的多层电子照相感光体，以及包括这种多层型电子照相感光体的图像形成装置。 包括直接或通过中间层在基底上至少含有电荷产生剂的电荷产生层和至少含有电荷输送剂和依次形成的粘合剂树脂的电荷输送层的多层电子照相感光体，其中，所述光 多层电子照相感光体的光电导层中的680nm波长光束的吸收度为0.8以下，450nm波长光束的光吸收度为1.0以上， 提供了包括这种多层型电子照相感光体的图像形成装置。

公开(公告)号：US20070281227A1

公开(公告)日：2007-12-06

申请号：US11805588

申请日：2007-05-24

申请人： Keiji Maruo ,  Junichiro Otsubo ,  Jun Azuma

发明人： Keiji Maruo ,  Junichiro Otsubo ,  Jun Azuma

IPC分类号： G03G5/047

CPC分类号： G03G5/0696 ,  G03G5/047 ,  G03G5/0564 ,  G03G5/0596 ,  G03G5/0614

摘要： The present invention is to provide a multilayer type electrophotographic photoconductor capable of stably obtaining a high image quality image over a long term by restraining the exposure memory and the photo memory, and an image forming apparatus comprising such a multilayer type electrophotographic photoconductor. A multilayer type electrophotographic photoconductor comprising a charge generating layer containing at least a charge generating agent on a base member directly or via an intermediate layer, and a charge transporting layer containing at least a charge transporting agent and a binder resin formed successively, wherein the light absorption degree at a 680 nm wavelength light beam in the photoconductive layer of the multilayer type electrophotographic photoconductor is of a value of 0.8 or less, and the light absorption degree at a 450 nm wavelength light beam is of a value of 1.0 or more, and an image forming apparatus comprising such a multilayer type electrophotographic photoconductor are provided.

摘要翻译： 本发明提供一种能够通过抑制曝光存储器和光存储器而能够长期稳定地获得高图像质量图像的多层电子照相感光体，以及包括这种多层型电子照相感光体的图像形成装置。 包括直接或通过中间层在基底上至少含有电荷产生剂的电荷产生层和至少含有电荷输送剂和依次形成的粘合剂树脂的电荷输送层的多层电子照相感光体，其中，所述光 多层电子照相感光体的光电导层中的680nm波长光束的吸收度为0.8以下，450nm波长光束的光吸收度为1.0以上， 提供了包括这种多层型电子照相感光体的图像形成装置。

公开(公告)号：US07855286B2

公开(公告)日：2010-12-21

申请号：US12589874

申请日：2009-10-29

申请人： Junichiro Otsubo ,  Jun Azuma

发明人： Junichiro Otsubo ,  Jun Azuma

IPC分类号： C09B47/067

CPC分类号： C09B67/0019 ,  C09B67/0016 ,  C09B67/0026 ,  G03G5/0603 ,  G03G5/0614 ,  G03G5/0616 ,  G03G5/0675 ,  G03G5/0677 ,  G03G5/0696

摘要： According to the present invention, a titanyl phthalocyanin crystal excellent in storage stability in organic solvents, a method for preparing the same and an electrophotographic photoconductor using the same are provided. In the titanyl phthalocyanin crystal, the method for preparing such a titanyl phthalocyanin crystal and the electrophotographic photoconductor using the same, the titanyl phthalocyanin crystal is characterized by having the maximum peak at a Bragg angle 2θ±0.2°=27.2° in a CuKα characteristic X-ray diffraction spectrum and one peak within the range of 270 to 400° C. other than a peak accompanied by the vaporization of adsorbed water in a differential scanning calorimetric analysis.

摘要翻译： 根据本发明，提供了在有机溶剂中的保存稳定性优异的酞菁钛结晶，其制备方法和使用其的电子照相感光体。 在酞菁钛结晶中，制备这种酞菁钛结晶的方法和使用其的电子照相感光体，钛酞菁结晶的特征在​​于在CuKα特性中在布拉格角2处具有最大峰;±0.2°= 27.2° 在差示扫描量热分析中除吸附水的蒸发之外的峰值之外，在270〜400℃的范围内的X射线衍射光谱和一个峰。

公开(公告)号：US07693454B2

公开(公告)日：2010-04-06

申请号：US11717190

申请日：2007-03-13

申请人： Jun Azuma ,  Junichiro Otsubo

发明人： Jun Azuma ,  Junichiro Otsubo

IPC分类号： G03G15/00

CPC分类号： G03G15/751 ,  G03G5/144

摘要： Disclosed is an image forming apparatus composed of a combination of multi-layered electrophotographic photoreceptor wherein an undercoat layer is made of at least fine titanium oxide particles and a binder resin and has a thickness of 3 μm or less and the fine titanium oxide particles are surface treated with alumina and silica and have a number average primary particle size of 20 nm or less, and exposing means by LED exposure. Thus, an electrophotographic photoreceptor having good balance between dispersibility of titanium oxide and electrical insulation properties is obtained and image fog does not occur under high temperature and high humidity environment and also excellent image quality can be maintained during continuous printing under low temperature and low humidity environment.

摘要翻译： 公开了一种图像形成装置，其由多层电子照相感光体的组合构成，其中底涂层由至少细小的氧化钛颗粒和粘合剂树脂制成，并且具有3μm或更小的厚度，并且氧化钛微粒是表面 用氧化铝和二氧化硅处理，数均原始粒径为20nm以下，通过LED曝光曝光。 因此，获得了在氧化钛的分散性和电绝缘性之间具有良好平衡的电子照相感光体，并且在高温和高湿度环境下不发生图像雾化，并且在低温和低湿度环境下连续印刷期间可以保持良好的图像质量 。