公开(公告)号：US06573017B2

公开(公告)日：2003-06-03

申请号：US10012306

申请日：2001-12-12

申请人： Jun Azuma ,  Yukimasa Watanabe ,  Hisakazu Honma ,  Ayako Yashima ,  Maki Uchida ,  Eiichi Miyamoto

发明人： Jun Azuma ,  Yukimasa Watanabe ,  Hisakazu Honma ,  Ayako Yashima ,  Maki Uchida ,  Eiichi Miyamoto

IPC分类号： G03G500

CPC分类号： G03G5/04 ,  G03G5/05 ,  G03G5/0609 ,  G03G5/0614 ,  G03G5/0651 ,  G03G5/0666

摘要： Disclosed is a single-layer type electrophotosensitive material comprising a conductive substrate and a photosensitive layer made of a binder resin containing at least an electric charge generating material and an electric charge transferring material, which is formed on the conductive substrate, wherein an oxygen transmission rate of the binder resin is not more than 35 cc·mm/m2·day·atom, wherein it is preferred that a mobility at an electric field strength of 5×105 V/cm of the hole transferring material is not less than 5×10−6 cm2/V/sec and a solid content of the electric charge transferring material is not less than 30% by weight and not more than 50% by weight based on the whole solid content; said electrophotosensitive material has good ozone resistance and does not cause defects such as image black belt due to lowering of the charge capability, an ozone of which is 5.0 ppm at most, and is also superior in sensitivity and wear resistance.

公开(公告)号：US07057034B2

公开(公告)日：2006-06-06

申请号：US10648719

申请日：2003-08-27

申请人： Kazunari Hamasaki ,  Daisuke Kuboshima ,  Hisakazu Honma ,  Jun Azuma ,  Eiichi Miyamoto

发明人： Kazunari Hamasaki ,  Daisuke Kuboshima ,  Hisakazu Honma ,  Jun Azuma ,  Eiichi Miyamoto

IPC分类号： C07D487/22

CPC分类号： C09B47/045 ,  C09B67/0026

摘要： The present invention relates to a novel titanyl phthalocyanine crystal which can prepare a coating solution having excellent storage stability because it satisfies both of the following two characteristics (a) and (b), a method of producing the same, an electrophotosensitive material using the above crystal as an electric charge generating material. (a) The crystal has a maximum peak at a Bragg angle 2θ±0.2°=27.2° and has no peak at 7.4° in a CuKα characteristic X-ray diffraction spectrum. (b) The crystal does not have a peak of a change in temperature within a range from 50 to 400° C. except for a peak associated with evaporation of adsorbed water in differential scanning calorimetry.

摘要翻译： 本发明涉及一种新的钛酞菁结晶，其可以制备具有优异的储存稳定性的涂布溶液，因为它满足以下两个特征（a）和（b），其制备方法，使用上述的电光敏材料 晶体作为电荷产生材料。 （a）晶体在布拉格角2θ±0.2°= 27.2°处具有最大峰值，并且在CuKalpha特征X射线衍射光谱中在7.4°没有峰值。 （b）在差示扫描量热法中，与吸附水的蒸发相关的峰除外，晶体的温度变化的峰值在50〜400℃的范围内。

公开(公告)号：US07029811B2

公开(公告)日：2006-04-18

申请号：US10248229

申请日：2002-12-30

申请人： Jun Azuma ,  Eiichi Miyamoto

发明人： Jun Azuma ,  Eiichi Miyamoto

IPC分类号： G03G5/10

CPC分类号： G03G5/0542 ,  G03G5/0528 ,  G03G5/056 ,  G03G5/0564 ,  G03G5/0571 ,  G03G5/105

摘要： An electrophotographic photoreceptor is disclosed which includes a conductive resin substrate and a resin layer. The resin layer includes a binding resin and is formed on the conductive resin substrate. The difference between the solubility parameter of the conductive resin substrate and the solubility parameter of the resin layer of the photoreceptor is 2.5 (J/cm3)1/2 or less.

摘要翻译： 公开了一种电子照相感光体，其包括导电树脂基板和树脂层。 树脂层包括粘合树脂，并且形成在导电树脂基板上。 导电性树脂基板的溶解度参数与感光体的树脂层的溶解度参数之差为2.5（J / cm 3以下）1/2以下。

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：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：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：US06858368B2

公开(公告)日：2005-02-22

申请号：US10249102

申请日：2003-03-17

申请人： Jun Azuma ,  Yukimasa Watanabe ,  Ayako Yashima

发明人： Jun Azuma ,  Yukimasa Watanabe ,  Ayako Yashima

IPC分类号： G03G5/06 ,  G03G13/20

CPC分类号： G03G5/0679 ,  G03G5/0609 ,  G03G5/0668 ,  G03G5/0677 ,  G03G5/0696

摘要： An image forming device is disclosed which comprises an electrophotographic photoreceptor and a flash fixing means. The photoreceptor has a photoconductive layer formed on top of a support substrate, and the photoconductive layer contains a charge generating agent and a charge transport agent therein. The half maximum wavelength region of the charge transport agent's absorption peak is in a visual region that includes the wavelength region of the flash light when its intensity is 50% or greater of its maximum but does not include the wavelength region of the exposure light. This photoreceptor will not produce electrostatic irregularities even if light from the flash fixing means leaks thereon, and its sensitivity and its ability to be electrostatically charged will not decrease even if repeatedly used.

摘要翻译： 公开了一种图像形成装置，其包括电子照相感光体和闪光固定装置。 感光体具有形成在支撑基板的顶部上的光电导层，光电导层中含有电荷产生剂和电荷输送剂。 电荷输送剂的吸收峰的最大半波长区域在其强度为其最大值的50％以上但不包括曝光光的波长区域的情况下，包含闪光的波长区域的视觉区域。 即使来自闪光固定装置的光在其上泄漏，该感光体也不会产生静电不规则，并且即使重复使用，其感光度和静电电荷的能力也不会降低。

公开(公告)号：US5907745A

公开(公告)日：1999-05-25

申请号：US850818

申请日：1997-05-02

申请人： Jun Azuma ,  Yoshinori Sugiura ,  Seietsu Miura ,  Tatsuo Hamada ,  Hiroshi Goto ,  Akira Kuroda ,  Takeshi Niimura ,  Yoshihiro Matsuo

发明人： Jun Azuma ,  Yoshinori Sugiura ,  Seietsu Miura ,  Tatsuo Hamada ,  Hiroshi Goto ,  Akira Kuroda ,  Takeshi Niimura ,  Yoshihiro Matsuo

IPC分类号： B41J2/435 ,  B41J2/44 ,  B41J13/10 ,  G03G15/00 ,  G03G15/04 ,  G03G15/20 ,  G03G15/32 ,  G03G21/20

CPC分类号： G03G15/6552 ,  B41J13/10 ,  B41J2/435 ,  B41J2/442 ,  G03G15/00 ,  G03G15/326 ,  G03G15/6502 ,  G03G21/206 ,  B65H2301/42142 ,  G03G15/0435 ,  G03G2215/00371 ,  G03G2215/00383 ,  G03G2215/00413

摘要： An image forming apparatus for forming an image on a recording material includes an image bearing member; and optical mechanism for projecting light corresponding to image information onto the image bearing member; a developer for developing a latent image formed on the image bearing member into a toner image; a transfer mechanism for transferring the toner image onto a recording material; a fixer for fixing the toner image transferred onto the recording material; a first support for supporting the recording material to be fed to the transfer mechanism; and a second support for supporting the recording material which has been subjected to a fixing operation of the fixer. Air ducts are provided along the back side supporting surfaces of the first support and the second support which overlap in a horizontal direction with the optical mechanism therebetween. A sheet feeding position, an image transfer position, and an image fixing position take lower positions in the order named.

摘要翻译： 用于在记录材料上形成图像的图像形成装置包括图像承载部件; 以及用于将对应于图像信息的光投射到图像承载部件上的光学机构; 用于将形成在图像承载部件上的潜像显影成调色剂图像的显影剂; 用于将调色剂图像转印到记录材料上的转印机构; 用于固定转印到记录材料上的调色剂图像的定影剂; 用于支撑待传送到传送机构的记录材料的第一支撑件; 以及用于支撑经过定影剂的定影操作的记录材料的第二支撑件。 沿着第一支撑件和第二支撑件的后侧支撑表面沿着水平方向重叠的空气管道，其间具有光学机构。 送纸位置，图像转印位置和图像定影位置以所述顺序取下较低的位置。

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：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 。