公开(公告)号：US07670743B2

公开(公告)日：2010-03-02

申请号：US12013891

申请日：2008-01-14

申请人： Katsuichi Ohta ,  Tatsuya Niimi ,  Nozomu Tamoto

发明人： Katsuichi Ohta ,  Tatsuya Niimi ,  Nozomu Tamoto

IPC分类号： G03G15/06 ,  G03G5/14

CPC分类号： G03G5/0696 ,  G03G5/0564 ,  G03G5/142 ,  G03G5/144 ,  G03G5/14704 ,  G03G5/14734 ,  G03G5/14786 ,  G03G5/14791 ,  G03G2215/00957

摘要： An image is formed by projecting an image by way of an image irradiating device onto an image bearing member configured to operate at a linear velocity of at least 300 mm/sec, and which is constructed of(i) an electroconductive substrate having an image bearing surface that has an established surface charge having an electric field intensity of at least 32.1 V/μm which is defined as the ratio of the absolute value (V) of the surface voltage of a non-irradiated portion of the image bearing member at a developing position to the layer thickness of the photosensitive layer (μm), (ii) a charge blocking layer overlying the electroconductive substrate, (iii) a moiré prevention layer overlying the charge blocking layer and (iv) a photosensitive layer overlying the moiré prevention layer consisting essentially of a titanyl phthalocyanine; charging the image bearing member by means of a charging device; irradiating said surface of the image bearing member with plural irradiation beams; developing the latent electrostatic image with a developing device; transferring the developed image by a transfer device configured; and cleaning the image bearing member.

摘要翻译： 通过图像照射装置将图像投影到构造成以至少300mm / sec的线速度运行的图像承载部件上形成图像，该图像承载部件由（i）具有图像承载体的导电基板 表面电荷具有至少32.1V /μm的电场强度的已建立的表面电荷，其被定义为显影时的图像承载部件的未照射部分的表面电压的绝对值（V） 位置到感光层的层厚度（μm），（ii）覆盖导电衬底的电荷阻挡层，（iii）覆盖电荷阻挡层的莫尔防止层和（iv）覆盖防止莫尔层的感光层， 基本上由钛酞菁组成; 通过充电装置对图像承载部件充电; 用多个照射光照射图像承载部件的所述表面; 用显影装置显影静电潜像; 通过配置的传送装置传送显影图像; 并清洁图像承载部件。

公开(公告)号：US20070154825A1

公开(公告)日：2007-07-05

申请号：US10543927

申请日：2004-12-01

申请人： Nozomu Tamoto ,  Tatsuya Niimi ,  Tetsuro Suzuki ,  Katsuichi Ohta

发明人： Nozomu Tamoto ,  Tatsuya Niimi ,  Tetsuro Suzuki ,  Katsuichi Ohta

IPC分类号： G03G5/147 ,  G03G5/047

CPC分类号： G03G5/144 ,  G03G5/047 ,  G03G5/0592 ,  G03G5/0696 ,  G03G5/142

摘要： An electrophotographic photoconductor that is excellent in the stability of image quality and can realize high durability is provided. In an electrophotographic photoconductor in which an underlying layer, a photoconductive layer, and a crosslinked-type charge transportation layer are stacked on an electrically conductive support in order, the underlying layer is composed of at least two layers being a layer containing an inorganic pigment and a layer including no inorganic pigment, and the crosslinked-type charge transportation layer is formed by curing, at least, a three-or-more-functional radical-polymerizable monomer having no charge transporting structure and a radical-polymerizable compound having one-functional charge transporting structure.

摘要翻译： 提供了图像质量稳定性优异并且可以实现高耐久性的电子照相感光体。 在其中将下层，光电导层和交联型电荷传输层按顺序层叠在导电载体上的电子照相感光体中，下层由至少两层构成，该层是含有无机颜料的层， 不含无机颜料的层，并且交联型电荷输送层通过至少固化不具有电荷输送结构的三官能以上的自由基聚合性单体和具有一官能的自由基聚合性化合物而形成 电荷输送结构。

公开(公告)号：US20050175911A1

公开(公告)日：2005-08-11

申请号：US10974814

申请日：2004-10-28

申请人： Nozomu Tamoto ,  Tatsuya Niimi ,  Tetsuro Suzuki ,  Katsuichi Ohta

发明人： Nozomu Tamoto ,  Tatsuya Niimi ,  Tetsuro Suzuki ,  Katsuichi Ohta

IPC分类号： G03G5/047 ,  G03G5/05 ,  G03G5/06 ,  G03G5/07 ,  G03G15/02

CPC分类号： G03G5/0592 ,  G03G5/0546 ,  G03G5/0589 ,  G03G5/0696 ,  G03G5/071

摘要： The object of the present invention is to provide a photoconductor that is highly sensitive, stable in image quality under repeated usages, and affords prolonged life. In order attain the object, a photoconductor is provided that comprises a charge generating layer, a charge transporting layer, and a crosslinked charge transporting layer, on an substrate in order, the charge generating layer contains titanyl phthalocyanine crystal particles that exhibit a highest peak at 27.2°, main peaks at 9.4°, 9.6° and 24.0°, a peak at 7.3° as the lowest angle, and with no peaks in a range between 7.3° and 9.4°, and with no peak at 26.3° as Bragg 2θangles (±0.2°) in terms of CuK-α characteristic X-ray wavelength at 1.542 Å, and the averaged primary particle size of the titanyl phthalocyanine crystal particles is 0.25 μm or less, and the crosslinked charge transporting layer contains a reaction product of a radical polymerizable monomer having three or more functionalities and no charge transporting structure and a radical polymerizable compound having one functionality and a charge transporting structure, and the thickness of the crosslinked charge transporting layer is 1 to 10 μm.

摘要翻译： 本发明的目的是提供一种在重复使用下具有高灵敏度，稳定的图像质量的感光体，并且延长使用寿命。 为了达到该目的，提供了一种光电导体，其包括电荷产生层，电荷输送层和交联的电荷输送层，依次在基板上，电荷产生层含有氧化钛酞菁晶体颗粒，其在 27.2°，主峰在9.4°，9.6°和24.0°，最低角为7.3°的峰值，7.3°和9.4°之间的峰值没有峰值，在26.3°没有峰值作为布拉格二角形 ±0.2°），钛氧酞菁结晶粒子的平均一次粒径为0.25μm以下，交联电荷输送层含有自由基的反应产物 具有三个或更多个官能团和无电荷输送结构的可聚合单体和具有一个官能度和电荷输送结构的自由基聚合性化合物，以及交联的c 输送层为1〜10毫米。

公开(公告)号：US20050069797A1

公开(公告)日：2005-03-31

申请号：US10944614

申请日：2004-09-20

申请人： Tatsuya Niimi ,  Nozomu Tamoto ,  Katsuichi Ohta

发明人： Tatsuya Niimi ,  Nozomu Tamoto ,  Katsuichi Ohta

IPC分类号： G03G5/06 ,  G03G5/14

CPC分类号： G03G5/144 ,  G03G5/0696 ,  G03G5/142

摘要： A photoreceptor including an electroconductive substrate; and a charge blocking layer; a moiré preventing layer; and a photosensitive layer, which are overlaid overlying the substrate in this order, wherein the photosensitive layer includes a titanyl phthalocyanine crystal which has an average primary particle diameter not greater than 0.25 μm, and has an X-ray diffraction spectrum such that a maximum peak is observed at a Bragg (2θ) angle of 27.2°±0.2°; a peak is observed at Bragg (2θ) angle of 9.4°±0.2°, 9.6±0.2° and 24.0±0.2°; a lowest angle peak is observed at an angle of 7.3°±0.2°; no peak is observed between the lowest angle peak and the 9.4° peak; and no peak is observed at a Bragg (2θ) angle of 26.3°±0.2°, when a Cu—Kα X-ray having a wavelength of 0.1542 nm (1.542 Å) is used.

摘要翻译： 包含导电基片的感光体; 和电荷阻挡层; 莫尔防止层; 和感光层，其以此顺序覆盖在基板上，其中感光层包括平均一次粒径不大于0.25μm的钛酞菁晶体，并具有X射线衍射光谱，使得最大峰值 在26.2°±0.2°的Bragg（2θ）角度观察到; 在布拉格（2θ）角为9.4°±0.2°，9.6±0.2°和24.0±0.2°时观察到峰值。 在7.3°±0.2°的角度观察到最低角度峰值; 在最低角峰和9.4°峰之间没有观察到峰; 当使用波长为0.1542nm（1.542）的Cu-Kalpha X射线时，在26.3°±0.2°的Bragg（2θ）角度下没有观察到峰。

公开(公告)号：US07507511B2

公开(公告)日：2009-03-24

申请号：US11332545

申请日：2006-01-17

申请人： Nozomu Tamoto ,  Tatsuya Niimi ,  Maiko Koeda ,  Tetsuro Suzuki ,  Takehiko Kinoshita ,  Suzuka Nozoe ,  Katsuichi Ohta

发明人： Nozomu Tamoto ,  Tatsuya Niimi ,  Maiko Koeda ,  Tetsuro Suzuki ,  Takehiko Kinoshita ,  Suzuka Nozoe ,  Katsuichi Ohta

IPC分类号： G03G15/04

CPC分类号： G03G5/142 ,  G03G5/043 ,  G03G5/0546 ,  G03G5/0589 ,  G03G5/0592 ,  G03G5/071 ,  G03G5/144

摘要： An electrophotographic photoreceptor, including: an electroconductive substrate; a first undercoat layer including no metal oxide, located overlying the electroconductive substrate; a second undercoat layer including a metal oxide and a binder resin, located overlying the first undercoat layer; and a photosensitive layer located overlying the second undercoat layer, wherein the metal oxide included in the second undercoat layer has a specific resistivity not less than 107 Ω·cm and a block isocyanate compound.

摘要翻译： 一种电子照相感光体，包括：导电性基体; 不包含位于导电基片上的金属氧化物的第一底涂层; 第二底涂层，包括位于第一底涂层上的金属氧化物和粘合剂树脂; 以及位于第二底涂层上的感光层，其中包含在第二底涂层中的金属氧化物具有不小于107Ω·cm的电阻率和嵌段异氰酸酯化合物。

公开(公告)号：US07371491B2

公开(公告)日：2008-05-13

申请号：US10944614

申请日：2004-09-20

申请人： Tatsuya Niimi ,  Nozomu Tamoto ,  Katsuichi Ohta

发明人： Tatsuya Niimi ,  Nozomu Tamoto ,  Katsuichi Ohta

IPC分类号： G03G5/047 ,  G03G5/14

CPC分类号： G03G5/144 ,  G03G5/0696 ,  G03G5/142

摘要： A photoreceptor including an electroconductive substrate; and a charge blocking layer; a moiré preventing layer; and a photosensitive layer, which are overlaid overlying the substrate in this order, wherein the photosensitive layer includes a titanyl phthalocyanine crystal which has an average primary particle diameter not greater than 0.25 μm, and has an X-ray diffraction spectrum such that a maximum peak is observed at a Bragg (2θ) angle of 27.2°±0.2°; a peak is observed at Bragg (2θ) angle of 9.4°±0.2°, 9.6±0.2° and 24.0±0.2°; a lowest angle peak is observed at an angle of 7.3°±0.2°; no peak is observed between the lowest angle peak and the 9.4° peak; and no peak is observed at a Bragg (2θ) angle of 26.3°±0.2°, when a Cu—Kα X-ray having a wavelength of 0.1542 nm (1.542 Å) is used.

摘要翻译： 包含导电基片的感光体; 和电荷阻挡层; 莫尔防止层; 和感光层，其以此顺序覆盖在基板上，其中感光层包括平均一次粒径不大于0.25μm的钛酞菁晶体，并具有X射线衍射光谱，使得最大峰值 在26.2°±0.2°的Bragg（2θ）角度观察到; 在布拉格（2θ）角为9.4°±0.2°，9.6±0.2°和24.0±0.2°时观察到峰值。 在7.3°±0.2°的角度观察到最低角度峰值; 在最低角峰和9.4°峰之间没有观察到峰; 当使用波长为0.1542nm（1.542）的Cu-Kalpha X射线时，在26.3°±0.2°的Bragg（2θ）角度下没有观察到峰。

公开(公告)号：US07560203B2

公开(公告)日：2009-07-14

申请号：US10543927

申请日：2004-12-01

申请人： Nozomu Tamoto ,  Tatsuya Niimi ,  Tetsuro Suzuki ,  Katsuichi Ohta

发明人： Nozomu Tamoto ,  Tatsuya Niimi ,  Tetsuro Suzuki ,  Katsuichi Ohta

IPC分类号： G03G5/147

CPC分类号： G03G5/144 ,  G03G5/047 ,  G03G5/0592 ,  G03G5/0696 ,  G03G5/142

摘要： An electrophotographic photoconductor that is excellent in the stability of image quality and can realize high durability is provided. In an electrophotographic photoconductor in which an underlying layer, a photoconductive layer, and a crosslinked-type charge transportation layer are stacked on an electrically conductive support in order, the underlying layer is composed of at least two layers being a layer containing an inorganic pigment and a layer including no inorganic pigment, and the crosslinked-type charge transportation layer is formed by curing, at least, a three-or-more-functional radical-polymerizable monomer having no charge transporting structure and a radical-polymerizable compound having one-functional charge transporting structure.

摘要翻译： 提供了图像质量稳定性优异并且可以实现高耐久性的电子照相感光体。 在其中将下层，光电导层和交联型电荷传输层按顺序层叠在导电载体上的电子照相感光体中，下层由至少两层构成，该层是含有无机颜料的层， 不含无机颜料的层，并且交联型电荷输送层通过至少固化不具有电荷输送结构的三官能以上的自由基聚合性单体和具有一官能的自由基聚合性化合物而形成 电荷输送结构。

公开(公告)号：US20080145778A1

公开(公告)日：2008-06-19

申请号：US12013891

申请日：2008-01-14

申请人： Katsuichi Ohta ,  Tatsuya Niimi ,  Nozomu Tamoto

发明人： Katsuichi Ohta ,  Tatsuya Niimi ,  Nozomu Tamoto

IPC分类号： G03C5/56

CPC分类号： G03G5/0696 ,  G03G5/0564 ,  G03G5/142 ,  G03G5/144 ,  G03G5/14704 ,  G03G5/14734 ,  G03G5/14786 ,  G03G5/14791 ,  G03G2215/00957

摘要： An image forming apparatus including an image bearing member to operate at a linear velocity of at least 300 mm/sec, which includes an electroconductive substrate, a charge blocking layer located overlying the electroconductive substrate, a moiré prevention layer located overlying the charge blocking layer, and a photosensitive layer located overlying the moiré prevention layer. The photosensitive layer contains titanyl phthalocyanine having a primary particle diameter of not greater than 0.25 μm and having a crystal form having a CuKα X ray diffraction spectrum having a wavelength of 1.542 Å such that the maximum diffraction peak is observed at a Bragg (2θ) angle of 27.2±0.2°, main peaks are observed at a Bragg (2θ) angle of 9.4±0.2°, 9.6±0.2°, and 24.0±0.2°, and a peak is observed at a Bragg (2θ) angle of 7.3±0.2° as the lowest angle diffraction peak, while there is no peak between 9.4±0.2° and 7.3±0.2° and there is no peak at 26.3±0.2°).

摘要翻译： 一种图像形成装置，包括以至少300mm / sec的线速度运行的图像承载部件，其包括导电基板，位于导电基板上方的电荷阻挡层，位于电荷阻挡层上方的防止波纹的层， 以及位于覆盖防雾层的感光层。 感光层含有一次粒径不大于0.25μm的氧钛酞菁，具有CuKαX射线衍射光谱的波长为1.542的结晶形式，使得在Bragg（2θ）角度观察到最大衍射峰 的峰值为27.2±0.2°，在布拉格（2θ）角为9.4±0.2°，9.6±0.2°和24.0±0.2°时观测到主峰，在布拉格（2θ）角为7.3±0.2处观察到峰 °为最低角衍射峰，而在9.4±0.2°和7.3±0.2°之间没有峰，26.3±0.2°没有峰）。

公开(公告)号：US07371490B2

公开(公告)日：2008-05-13

申请号：US10974814

申请日：2004-10-28

申请人： Nozomu Tamoto ,  Tatsuya Niimi ,  Tetsuro Suzuki ,  Katsuichi Ohta

发明人： Nozomu Tamoto ,  Tatsuya Niimi ,  Tetsuro Suzuki ,  Katsuichi Ohta

IPC分类号： G03G5/047

CPC分类号： G03G5/0592 ,  G03G5/0546 ,  G03G5/0589 ,  G03G5/0696 ,  G03G5/071

摘要： The object of the present invention is to provide a photoconductor that is highly sensitive, stable in image quality under repeated usages, and affords prolonged life.In order attain the object, a photoconductor is provided that comprises a charge generating layer, a charge transporting layer, and a crosslinked charge transporting layer, on an substrate in order,the charge generating layer contains titanyl phthalocyanine crystal particles that exhibit a highest peak at 27.2°, main peaks at 9.4°, 9.6° and 24.0°, a peak at 7.3° as the lowest angle, and with no peaks in a range between 7.3° and 9.4°, and with no peak at 26.3° as Bragg 2θangles (±0.2°) in terms of CuK-α characteristic X-ray wavelength at 1.542 Å, and the averaged primary particle size of the titanyl phthalocyanine crystal particles is 0.25 μm or less, andthe crosslinked charge transporting layer contains a reaction product of a radical polymerizable monomer having three or more functionalities and no charge transporting structure and a radical polymerizable compound having one functionality and a charge transporting structure, and the thickness of the crosslinked charge transporting layer is 1 to 10 μm.

摘要翻译： 本发明的目的是提供一种在重复使用下具有高灵敏度，稳定的图像质量的感光体，并且延长使用寿命。 为了达到该目的，提供了一种光电导体，其包括电荷产生层，电荷输送层和交联的电荷输送层，依次在基板上，电荷产生层含有氧化钛酞菁晶体颗粒，其在 27.2°，主峰在9.4°，9.6°和24.0°，最低角为7.3°的峰值，7.3°和9.4°之间的峰值没有峰值，在26.3°没有峰值作为布拉格二角形 ±0.2°），钛氧酞菁结晶粒子的平均一次粒径为0.25μm以下，交联电荷输送层含有自由基的反应产物 具有三个或更多个官能团和无电荷输送结构的可聚合单体和具有一个官能度和电荷输送结构的自由基聚合性化合物，以及交联的c 输送层为1〜10毫米。

公开(公告)号：US20060197823A1

公开(公告)日：2006-09-07

申请号：US11367786

申请日：2006-03-06

申请人： Katsuichi Ohta ,  Tatsuya Niimi ,  Nozomu Tamoto

发明人： Katsuichi Ohta ,  Tatsuya Niimi ,  Nozomu Tamoto

IPC分类号： B41J2/415

CPC分类号： G03G5/0696 ,  G03G5/0564 ,  G03G5/142 ,  G03G5/144 ,  G03G5/14704 ,  G03G5/14734 ,  G03G5/14786 ,  G03G5/14791 ,  G03G2215/00957

摘要： An image forming apparatus including an image bearing member to operate at a linear velocity of at least 300 mm/sec, which includes an electroconductive substrate, a charge blocking layer located overlying the electroconductive substrate, a moiré prevention layer located overlying the charge blocking layer, and a photosensitive layer located overlying the moiré prevention layer. The photosensitive layer contains titanyl phthalocyanine having a primary particle diameter of not greater than 0.25 μm and having a crystal form having a CuKα X ray diffraction spectrum having a wavelength of 1.542 Å such that the maximum diffraction peak is observed at a Bragg (2θ) angle of 27.2±0.2°, main peaks are observed at a Bragg (2θ) angle of 9.4±0.2°, 9.6±0.2°, and 24.0±0.2°, and a peak is observed at a Bragg (2θ) angle of 7.3±0.2° as the lowest angle diffraction peak, while there is no peak between 9.4±0.2 and 7.3±0.2 and there is no peak at 26.3±0.2°).

摘要翻译： 一种图像形成装置，包括以至少300mm / sec的线速度运行的图像承载部件，其包括导电基板，位于导电基板上方的电荷阻挡层，位于电荷阻挡层上方的防止波纹的层， 以及位于覆盖防雾层的感光层。 感光层含有一次粒径不大于0.25μm的氧钛酞菁，具有CuKαX射线衍射光谱的波长为1.542的结晶形式，使得在Bragg（2θ）角度观察到最大衍射峰 的峰值为27.2±0.2°，在布拉格（2θ）角为9.4±0.2°，9.6±0.2°和24.0±0.2°时观测到主峰，在布拉格（2θ）角为7.3±0.2处观察到峰 °作为最低角衍射峰，而在9.4±0.2和7.3±0.2之间没有峰，而在26.3±0.2°处没有峰。