公开(公告)号：US07844201B2

公开(公告)日：2010-11-30

申请号：US12173831

申请日：2008-07-16

申请人： Kazunari Hamasaki ,  Yuko Iwashita

发明人： Kazunari Hamasaki ,  Yuko Iwashita

IPC分类号： G03G15/00

CPC分类号： G03G5/102 ,  G03G5/144 ,  G03G15/75 ,  G03G21/0064 ,  G03G2215/0614

摘要： There is provided a tandem color image forming apparatus and the like, which is capable of suppressing the generation of black spots during a continuous image forming process, even though a non-magnetic single-component developer is used and a cleaner-less type is adopted. The color image forming apparatus is a tandem type that includes a plurality of image carriers and a cleaner-less type that does not include a blade cleaner, wherein the resistance per square centimeter of a base body of an image carrier using for at least a black developer among the plurality of image carriers, or the resistance per square centimeter of the base body through an intermediate layer is set in a range of 1×105 to 1×108Ω or more.

摘要翻译： 提供了一种串联彩色图像形成装置等，其能够在连续成像处理期间抑制黑点的产生，即使使用非磁性单组分显影剂，并且采用无清洁剂型 。 彩色图像形成装置是串联型，其包括多个图像载体和不包括刮板清洁器的无清洁器类型，其中每平方厘米的图像载体的基体的电阻至少使用黑色 多个图像载体中的显影剂或通过中间层的基体的每平方厘米的电阻被设定在1×105〜1×108＆OHgr的范围内。 或者更多。

公开(公告)号：US07838191B2

公开(公告)日：2010-11-23

申请号：US11717274

申请日：2007-03-12

申请人： Daisuke Kuboshima ,  Kazunari Hamasaki ,  Yuko Iwashita

发明人： Daisuke Kuboshima ,  Kazunari Hamasaki ,  Yuko Iwashita

IPC分类号： G03G5/06

CPC分类号： G03G5/0696 ,  G03G5/056 ,  G03G5/0614 ,  G03G5/0618 ,  G03G5/0637

摘要： The present invention provides a monolayer type electrophotographic photoconductor which can effectively suppress the generation of an exposure memory and exhibits high sensitivity and an image forming apparatus using the monolayer type electrophotographic photoconductor. In an electrophotographic photoconductor which has a monolayer type photoconductive layer including at least a charge generating agent, a hole transfer agent, an electron transfer agent and a binding resin on a substrate, the charge generating agent contains oxo-titanyl phthalocyanine crystal, the electron transfer agent has a reduction potential thereof set to a value which falls within a range from −0.97 to −0.83 V, and the reflection absorbance (A/−) of the photoconductive layer with respect to light having a wavelength of 700 nm, a film thickness (d/m) of the photoconductive layer, and the concentration (C/weight %) of the oxo-titanyl phthalocyanine crystal of the photoconductive layer (100 weight %) satisfy a following formula (1). A·C−1·d−1>1.75×104  (1)

摘要翻译： 本发明提供了一种单层型电子照相感光体，其能够有效地抑制曝光记忆体的产生并显示出高灵敏度，以及使用单层型电子照相感光体的图像形成装置。 在具有至少包括电荷产生剂，空穴转移剂，电子转移剂和基底上的结合树脂的单层型光电导层的电子照相感光体中，电荷产生剂含有氧代 - 氧钛 - 酞菁结晶，电子转移 试剂的还原电位设定在-0.97〜-0.83V的范围内，光电导层相对于波长为700nm的光的反射吸光度（A / - ），膜厚 （d / m），光导电层的氧代 - 氧钛氧基酞菁结晶的浓度（C /重量％）满足下式（1）。 A·C-1·d-1> 1.75×104（1）

公开(公告)号：US07416825B2

公开(公告)日：2008-08-26

申请号：US11325061

申请日：2006-01-04

申请人： Daisuke Kuboshima ,  Kazunari Hamasaki ,  Norio Nakai

发明人： Daisuke Kuboshima ,  Kazunari Hamasaki ,  Norio Nakai

IPC分类号： G03G5/06

CPC分类号： G03G5/0592 ,  G03G5/0517 ,  G03G5/0564 ,  G03G5/0578 ,  G03G5/0609 ,  G03G5/0614 ,  G03G5/0651 ,  G03G5/0696 ,  G03G5/102

摘要： The present invention provides a single layer type electrophotographic photoconductor which exhibits the small number of generated black spots in a formed image and exhibits the excellent sensitivity characteristic even when the photoconductor is used for a long time or a photoconductor drum is rotated at a high speed and an image display device which includes the single layer type electrophotographic photoconductor. In the single layer type electrophotographic photoconductor which includes a photoconductive layer containing a binding resin, a hole transporting agent and an charge generating agent, the photoconductor contains a water-repellant polycarbonate resin as the binding resin, and a contact angle of pure water (measured temperature: 25° C.) with respect to the photoconductive layer is set to 100° or more.

公开(公告)号：US06376142B2

公开(公告)日：2002-04-23

申请号：US09805944

申请日：2001-03-15

申请人： Fumio Sugai ,  Kazunari Hamasaki

发明人： Fumio Sugai ,  Kazunari Hamasaki

IPC分类号： G03G5047

CPC分类号： G03G5/065 ,  G03G5/0609 ,  G03G5/0612 ,  G03G5/0629

摘要： The present invention relates to an electrophotosensitive material comprising a conductive substrate and a photosensitive layer formed on the substrate, the photosensitive layer containing a maleimide derivative represented by the general formula (1): wherein R represents hydrogen atom, alkyl, aryl or aralkyl. The electrophotosensitive material has high sensitivity, since maleimide derivative (1) has excellent electron acceptability, comparability with binder resin and matching with electric charge generating material.

摘要翻译： 本发明涉及一种电光敏材料，其包含形成在基底上的导电基底和感光层，感光层含有由通式（1）表示的马来酰亚胺衍生物：其中R表示氢原子，烷基，芳基或芳烷基。 电子感光材料具有高灵敏度，因为马来酰亚胺衍生物（1）具有优异的电子可接受性，与粘合剂树脂的可比性和与电荷产生材料的匹配。

公开(公告)号：US06090514A

公开(公告)日：2000-07-18

申请号：US367897

申请日：1999-08-20

申请人： Mikio Kakui ,  Hirofumi Kawaguchi ,  Akihiko Kawahara ,  Kazunari Hamasaki ,  Yoshio Inagaki ,  Ayako Yashima

发明人： Mikio Kakui ,  Hirofumi Kawaguchi ,  Akihiko Kawahara ,  Kazunari Hamasaki ,  Yoshio Inagaki ,  Ayako Yashima

IPC分类号： G03G5/06

CPC分类号： G03G5/0666 ,  G03G5/0614 ,  G03G5/0657 ,  G03G5/0681 ,  G03G5/0696

摘要： The present invention provides an electrophotosensitive material comprising a conductive substrate and a single photosensitive layer containing a stilbene derivative (hole transferring material) represented by the general formula (1): ##STR1## (wherein R.sup.1, R.sup.2, R.sup.5 and R.sup.6 are the same or different and represent an alkyl group, an alkoxy group, an aryl group, an aralkyl group or a halogen atom; m, n, p and q are the same or different and represent an integer of 0 to 3, with the proviso that m and n represent a different integer when substituents represented by R.sup.1 and R.sup.2 are the same and that p and q represent a different integer when substituents represented by R.sup.5 and R.sup.6 are the same; and R.sup.3 and R.sup.4 are the same or different and represent a hydrogen atom or an alkyl group) and an electron transferring material, which is provided on the conductive substrate. This photosensitive material has high sensitivity and can be applied to any of positive and negative charging types with a single construction, and is also superior in optical characteristics.

摘要翻译： PCT No.PCT / JP98 / 00787 Sec。 371日期1999年8月20日 102（e）日期1999年8月20日PCT提交1998年2月25日PCT公布。 公开号WO98 / 38551 日期：1998年9月3日本发明提供一种电光敏材料，其包含导电性基材和含有通式（1）表示的二苯乙烯衍生物（空穴转移材料）的单一感光层：（其中R1，R2，R5和R6为 相同或不同，表示烷基，烷氧基，芳基，芳烷基或卤素原子; m，n，p和q相同或不同，表示0〜3的整数，条件是 当由R 1和R 2表示的取代基相同时，m和n表示不同的整数，并且当由R 5和R 6表示的取代基相同时，p和q表示不同的整数;并且R 3和R 4相同或不同，表示氢 原子或烷基）和电子转移材料，其设置在导电基板上。 该感光材料具有高灵敏度，并且可以应用于具有单一结构的任何正和负电荷类型，并且还具有优异的光学特性。

公开(公告)号：US5976742A

公开(公告)日：1999-11-02

申请号：US83981

申请日：1998-05-26

申请人： Fumio Sugai ,  Nobuko Akiba ,  Kazunari Hamasaki

发明人： Fumio Sugai ,  Nobuko Akiba ,  Kazunari Hamasaki

IPC分类号： C07D241/36 ,  C07D241/38 ,  G03G5/06 ,  G03G5/04

CPC分类号： G03G5/0664 ,  C07D241/38 ,  G03G5/0609 ,  G03G5/067

摘要： The present invention provides a novel naphthoquinone derivative preferred as an electron transporting agent and an electrophotographic photosensitive material of high sensitivity which contains a novel naphtoquinone derivative having a general formula (1) ##STR1## wherein R.sup.1 represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group which may contain a substituent, and R.sup.2 represents a hydrogen atom, an alkyl group which may have a substituent, a halogenated alkyl group, an aldehyde or a nitro group. The derivative is contained in a photosensitive layer of an electrophotographic photosensitive material as an electron transporting agent.

摘要翻译： 本发明提供优选作为电子传输剂的新型萘醌衍生物和高灵敏度的电子照相感光材料，其含有通式（1）的新颖的萘醌衍生物，其中R1表示氢原子，可具有取代基的烷基 或可以含有取代基的芳基，R 2表示氢原子，可以具有取代基的烷基，卤代烷基，醛或硝基。 该衍生物包含在作为电子传输剂的电子照相感光材料的感光层中。

公开(公告)号：US09141007B2

公开(公告)日：2015-09-22

申请号：US12047401

申请日：2008-03-13

申请人： Kazunari Hamasaki ,  Yuko Iwashita ,  Daisuke Kuboshima ,  Keiji Maruo ,  Shiho Kuboshima

发明人： Kazunari Hamasaki ,  Yuko Iwashita ,  Daisuke Kuboshima ,  Keiji Maruo ,  Shiho Kuboshima

IPC分类号： G03G15/06 ,  G03G5/06 ,  G03G5/05

CPC分类号： G03G5/0696 ,  G03G5/0564 ,  G03G5/0609 ,  G03G5/0614 ,  G03G5/0668 ,  G03G5/0672 ,  G03G5/0677

摘要： Provided is a monolayer type photoconductor superior in sensitivity characteristics that allows reliable production by easy confirmation of the sensitivity characteristics, and an image forming device using such a monolayer type photoconductor. A monolayer type photoconductor including a base body and a single photo sensitive layer formed on the base body, the single photo sensitive layer containing a charge generating agent, a hole transfer agent, an electron transfer agent and a binding resin, wherein a maximum absorption wavelength (λmax) of the photo sensitive layer is set to a value of below 850 nm and an absorbance (A850) of light at a wavelength of 850 nm per unit thickness of the photo sensitive layer is set to a value of 0.05 μm−1 or less.

摘要翻译： 提供了通过容易地确认灵敏度特性而允许可靠地生产的灵敏度特性优异的单层型感光体，以及使用这种单层型感光体的图像形成装置。 一种单层型光电导体，包括基体和形成在基体上的单个感光层，单一光敏层含有电荷产生剂，空穴转移剂，电子转移剂和粘合树脂，其中最大吸收波长 将感光层的λmax（λmax）设定为低于850nm的值，并且将感光层的每单位厚度的波长850nm的光的吸光度（A850）设定为0.05μm-1或 减。

公开(公告)号：US07700251B2

公开(公告)日：2010-04-20

申请号：US11582588

申请日：2006-10-18

申请人： Norio Nakai ,  Kazunari Hamasaki ,  Daisuke Kuboshima ,  Yoshio Inagaki ,  Hideki Okada ,  Tetsuya Ichiguchi ,  Keiji Maruo

发明人： Norio Nakai ,  Kazunari Hamasaki ,  Daisuke Kuboshima ,  Yoshio Inagaki ,  Hideki Okada ,  Tetsuya Ichiguchi ,  Keiji Maruo

IPC分类号： G03G5/06

CPC分类号： G03G5/047 ,  G03G5/0517 ,  G03G5/0605 ,  G03G5/0609 ,  G03G5/0612 ,  G03G5/0618 ,  G03G5/062

摘要： An electrophotographic photoconductor having an excellent crack resistance and wear resistance as well as excellent sensitivity characteristics, while keeping good image characteristics of the photoconductor is provided. In addition, an image-forming apparatus equipped with such an electrophotographic photoconductor is also provided. The electrophotographic photoconductor includes a photosensitive layer containing at least a charge-generating agent, a hole-transfer agent, and a binder resin on a conductive substrate. The hole-transfer agent has a solubility of 5 to 35% by weight with respect to triglyceride oleate and the photosensitive layer contains a compound represented by the following general formula (1) as an additive:

摘要翻译： 提供具有优异的耐龟裂性和耐磨性以及优异的灵敏度特性的电子照相感光体，同时保持感光体的良好图像特性。 此外，还提供了配备有这种电子照相感光体的图像形成装置。 电子照相感光体包括在导电性基材上至少含有电荷发生剂，空穴转移剂和粘合剂树脂的感光层。 空穴转移剂相对于甘油三酯油酸盐的溶解度为5〜35重量％，感光层含有下述通式（1）表示的化合物作为添加剂：

公开(公告)号：US20070111118A1

公开(公告)日：2007-05-17

申请号：US11582588

申请日：2006-10-18

申请人： Norio Nakai ,  Kazunari Hamasaki ,  Daisuke Kuboshima ,  Yoshio Inagaki ,  Hideki Okada ,  Tetsuya Ichiguchi ,  Keiji Maruo

发明人： Norio Nakai ,  Kazunari Hamasaki ,  Daisuke Kuboshima ,  Yoshio Inagaki ,  Hideki Okada ,  Tetsuya Ichiguchi ,  Keiji Maruo

IPC分类号： G03G5/06

CPC分类号： G03G5/047 ,  G03G5/0517 ,  G03G5/0605 ,  G03G5/0609 ,  G03G5/0612 ,  G03G5/0618 ,  G03G5/062

摘要： An electrophotographic photoconductor having an excellent crack resistance and wear resistance as well as excellent sensitivity characteristics, while keeping good image characteristics of the photoconductor is provided. In addition, an image-forming apparatus equipped with such an electrophotographic photoconductor is also provided. The electrophotographic photoconductor includes a photosensitive layer containing at least a charge-generating agent, a hole-transfer agent, and a binder resin on a conductive substrate. The hole-transfer agent has a solubility of 5 to 35% by weight with respect to triglyceride oleate and the photosensitive layer contains a compound represented by the following general formula (1) as an additive:

摘要翻译： 提供具有优异的耐龟裂性和耐磨性以及优异的灵敏度特性的电子照相感光体，同时保持感光体的良好图像特性。 此外，还提供了配备有这种电子照相感光体的图像形成装置。 电子照相感光体包括在导电性基材上至少含有电荷发生剂，空穴转移剂和粘合剂树脂的感光层。 空穴转移剂相对于甘油三酯油酸盐的溶解度为5〜35重量％，感光层含有下述通式（1）表示的化合物作为添加剂：

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。