公开(公告)号：US06696214B2

公开(公告)日：2004-02-24

申请号：US10336761

申请日：2003-01-06

申请人： Satoshi Katayama ,  Mikio Kakui ,  Masayuki Sakamoto ,  Tatsuhiro Morita ,  Sayaka Fujita ,  Tadashi Nakamura

发明人： Satoshi Katayama ,  Mikio Kakui ,  Masayuki Sakamoto ,  Tatsuhiro Morita ,  Sayaka Fujita ,  Tadashi Nakamura

IPC分类号： G03G5047

CPC分类号： G03G5/0696 ,  G03G5/144

摘要： The invention provides an electrophotographic photoreceptor, in which suppression of image defects and high sensitivity are compatible, and a method for production thereof. The invention also provides a coating fluid for forming a photosensitive layer and a method for production thereof, as well as an image-forming apparatus using said electrophoto-graphic photoreceptor. Briefly, the electrophoto-graphic photoreceptors may be constructed by forming an undercoating layer on a conductive support, and then forming a photosensitive layer on the undercoating layer. The undercoating layer contains titanium oxide particles in at least either needle shape or dendrite shape. The photosensitive layer contains an electric charge-generating material of which the primary particle size and cohesive particle size are in a range of 0.01 &mgr;m-10 &mgr;m. Accordingly, in the electrophotographic photoreceptors, it is possible to maintain high sensitivity and excellent durability and to form an image with no defect. The photosensitive layer in the electrophotographic photoreceptor has a multilayer structure consisting of a charge-generating layer and a charge-transporting layer. The charge-generating material is a phthalocyanine pigment.

摘要翻译： 本发明提供一种电子照相感光体及其制造方法，其中图像缺陷的抑制和高灵敏度相容。 本发明还提供了用于形成感光层的涂布液及其制造方法，以及使用所述电子照相感光体的图像形成装置。 简而言之，电子照相感光体可以通过在导电载体上形成底涂层，然后在底涂层上形成感光层来构造。 底涂层含有至少针状或枝晶形状的氧化钛粒子。 感光层含有一次粒径和粘性粒径在0.01μm〜10μm的范围内的电荷产生材料。 因此，在电子照相感光体中，可以保持高灵敏度和优异的耐久性，并形成没有缺陷的图像。 电子照相感光体中的感光层具有由电荷产生层和电荷输送层组成的多层结构。 电荷产生材料是酞菁颜料。

公开(公告)号：US6136484A

公开(公告)日：2000-10-24

申请号：US322926

申请日：1999-06-01

申请人： Satoshi Katayama ,  Yoshihide Shimoda ,  Makoto Kurokawa ,  Mikio Kakui ,  Hiroko Ishibashi ,  Tadashi Nakamura ,  Tatsuhiro Morita ,  Masayuki Sakamoto ,  Kazushige Morita ,  Tomoko Kanazawa ,  Akihiko Kawahara

发明人： Satoshi Katayama ,  Yoshihide Shimoda ,  Makoto Kurokawa ,  Mikio Kakui ,  Hiroko Ishibashi ,  Tadashi Nakamura ,  Tatsuhiro Morita ,  Masayuki Sakamoto ,  Kazushige Morita ,  Tomoko Kanazawa ,  Akihiko Kawahara

IPC分类号： G03G5/06 ,  G03G5/14

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

摘要： Highly sensitive and highly durable electrophotographic photoreceptors which generate faultless images can be produced by forming the under-coating layer on the conductive support and forming the photoreceptive layer on the layer. The under-coating layer contains dendritic titanium oxide. The under-coating layer contains the dendritic titanium oxide of which the surface is coated with (a) metal oxide(s) and/or (an) organic compound(s). The photoreceptive layer contains a phthalocyanine pigment, and the under-coating layer contains dendritic or needle-like titanium oxide of which the surface is coated with (a) metal oxide(s) and/or (an) organic compound(s). The photoreceptive layer contains a phthalocyanine pigment, and the under-coating layer contains dendritic or needle-like titanium oxide, of which the surface is coated with (a) metal oxide(s) and/or (an) organic compound(s), and an alcohol soluble polyamide resin.

摘要翻译： 产生无故障图像的高度敏感和高度耐用的电子照相感光体可以通过在导电支撑上形成底涂层并在该层上形成感光层来制备。 底涂层含有树枝状氧化钛。 底涂层含有表面被（a）金属氧化物和/或（有机化合物）涂覆的树枝状氧化钛。 感光层含有酞菁颜料，底涂层含有表面涂有（a）金属氧化物和/或（有机化合物）的树枝状或针状氧化钛。 感光层含有酞菁颜料，底涂层含有树枝状或针状氧化钛，其表面被（a）金属氧化物和/或（有机化合物）涂覆， 和醇溶性聚酰胺树脂。

公开(公告)号：US06573105B1

公开(公告)日：2003-06-03

申请号：US09588759

申请日：2000-06-06

申请人： Tomoko Kanazawa ,  Yoshihide Shimoda ,  Sayaka Fujita ,  Tadashi Nakamura ,  Masayuki Sakamoto ,  Tatsuhiro Morita

发明人： Tomoko Kanazawa ,  Yoshihide Shimoda ,  Sayaka Fujita ,  Tadashi Nakamura ,  Masayuki Sakamoto ,  Tatsuhiro Morita

IPC分类号： G01N2172

CPC分类号： G03G5/147 ,  G01N30/12 ,  G01N2030/125 ,  G03G5/05 ,  G03G5/0503 ,  G03G5/0525 ,  G03G5/14

摘要： A test method for a coating liquid for an electrophotographic photoconductor includes calculating a peak area ratio of a component to be analyzed in a coating liquid by pyrolysis gas chromatography, and comparing the peak area ratio with a pre-obtained peak area ratio of the component in a reference coating liquid having a known content of the component, to determine the ratio and/or content of the component in the coating liquid. A control method for controlling a coating liquid based on the test result as obtained is also provided.

摘要翻译： 用于电子照相感光体的涂布液的测试方法包括通过热解气相色谱法计算涂布液中待分析组分的峰面积比，并将峰面积比与预先获得的组分的峰面积比进行比较 具有已知含量的组分的参考涂布液，以确定涂布液中组分的比例和/或含量。还提供了一种基于获得的测试结果控制涂布液的控制方法。

公开(公告)号：US06265123B1

公开(公告)日：2001-07-24

申请号：US09533071

申请日：2000-03-22

申请人： Mikio Kakui ,  Tatsuhiro Morita ,  Rikiya Matsuo ,  Sayaka Fujita ,  Kazushige Morita ,  Yoshihide Shimoda

发明人： Mikio Kakui ,  Tatsuhiro Morita ,  Rikiya Matsuo ,  Sayaka Fujita ,  Kazushige Morita ,  Yoshihide Shimoda

IPC分类号： G03G506

CPC分类号： G03G5/0696 ,  G03G5/0679

摘要： An electrophotographic photosensitive element is provided with a photosensitive layer containing a charge generating substance and a charge transport substance on a conductive support. X-type metal-free phthalocyanine and a disazo compound are contained as a charge generating substance. With the photosensitive element, sufficient sensitivity is achieved so as to cause virtually no problem, and it is possible to reduce possibility of causing an instable electrostatic property such as a reduction in a charge potential and an increase in a remained potential, even in the case of frequent reuse.

摘要翻译： 电子照相感光元件在导电性载体上设置有含有电荷产生物质和电荷输送物质的感光层。 作为电荷产生物质，含有X型金属酞菁和双偶氮化合物。 利用感光元件，实现了足够的灵敏度，从而几乎没有问题，即使在这种情况下也可能降低引起诸如电荷电位降低和剩余电位增加等不稳定静电特性的可能性 经常重用。

公开(公告)号：US06717677B2

公开(公告)日：2004-04-06

申请号：US10244679

申请日：2002-09-17

申请人： Sayaka Fujita ,  Yoichi Takesawa ,  Yoshihide Shimoda ,  Tatsuhiro Morita ,  Rikiya Matsuo ,  Masayuki Sakamoto ,  Koichi Toriyama

发明人： Sayaka Fujita ,  Yoichi Takesawa ,  Yoshihide Shimoda ,  Tatsuhiro Morita ,  Rikiya Matsuo ,  Masayuki Sakamoto ,  Koichi Toriyama

IPC分类号： G01B902

CPC分类号： G01B11/0675 ,  G01N21/8422

摘要： It is an object of the invention to inspect defects of a film formed on a relatively rough surface of a substrate by the light interference method. A substrate on which a film is formed is irradiated with light of a longer wavelength than the surface roughness Rmax or Rz of the substrate to obtain interference fringes to inspect defects of the film formed on the substrate. Especially, it is preferable that when the surface roughness Rmax or Rz is 0.5 &mgr;m or more, the substrate is irradiated with light of a wavelength beyond a little longer wavelength than the surface roughness Rmax or Rz. The surface of the substrate is subjected to a cutting process. Specifically, it is possible to inspect defects of the electric charge generation layer, electric charge transport layer, or undercoat layer of an electrophotographic photoreceptor. This photoreceptor is mounted in a digital copier or printer. Further, monochromatic light is preferably applied. Alternatively, indirect light of the light reflected from a reflector plate or the light diffused by a diffusing plate is preferably applied.

摘要翻译： 本发明的目的是通过光干涉法来检测在基底的较粗糙表面上形成的膜的缺陷。 用比基板的表面粗糙度Rmax或Rz更长的波长的光照射其上形成有膜的基板，以获得干涉条纹，以检查在基板上形成的膜的缺陷。 特别地，优选的是，当表面粗糙度Rmax或Rz为0.5μm以上时，用比表面粗糙度Rmax或Rz稍长的波长的光照射基板。 对基板的表面进行切割处理。 具体地，可以检查电子照相感光体的电荷产生层，电荷输送层或底涂层的缺陷。 该感光体安装在数字复印机或打印机中。 此外，优选地应用单色光。 或者，优选地应用从反射板反射的光的间接光或由漫射板漫射的光。

公开(公告)号：US06472114B2

公开(公告)日：2002-10-29

申请号：US09944386

申请日：2001-09-04

申请人： Tatsuhiro Morita ,  Tomomi Nakamura ,  Rikiya Matsuo ,  Akihiko Kawahara ,  Koichi Toriyama ,  Mikio Kakui

发明人： Tatsuhiro Morita ,  Tomomi Nakamura ,  Rikiya Matsuo ,  Akihiko Kawahara ,  Koichi Toriyama ,  Mikio Kakui

IPC分类号： G03G505

CPC分类号： G03G5/0507 ,  G03G5/05 ,  G03G5/0514 ,  G03G5/0517 ,  G03G5/0525 ,  G03G5/0542 ,  G03G5/0696

摘要： An organic electrophotographic receptor comprising at least an undercoating layer, an electric charge generating layer, and an electric charge transferring layer which are laminated in said order, wherein a coating fluid 5 for forming said electric charge generating layer comprising an electric charge generating material, a binding resin, a silicon oil having a surface tension of 22 mN/m or less, and an organic solvent is stored inside a tank 4, and a photosensitive base 1 supported by a chucking device 8 is dipped into said coating tank 4 so as to form said electric charge generating layer.

摘要翻译： 一种有机电子照相受体，其至少包含底涂层，电荷产生层和电荷转移层，其按顺序层叠，其中用于形成所述电荷产生层的涂布液5包括电荷产生材料， 粘合树脂，表面张力为22mN / m以下的硅油和有机溶剂储存在罐4内，并且将由夹紧装置8支撑的感光基底1浸入所述涂布槽4中，以便 形成所述电荷产生层。

公开(公告)号：US5958638A

公开(公告)日：1999-09-28

申请号：US99039

申请日：1998-06-18

申请人： Satoshi Katayama ,  Takahiro Teramoto ,  Kiyofumi Morimoto ,  Satoshi Machino ,  Tatsuhiro Morita ,  Tomoko Kanazawa

发明人： Satoshi Katayama ,  Takahiro Teramoto ,  Kiyofumi Morimoto ,  Satoshi Machino ,  Tatsuhiro Morita ,  Tomoko Kanazawa

IPC分类号： G03G5/06 ,  G03G5/14

CPC分类号： G03G5/0659 ,  G03G5/142 ,  G03G5/144

摘要： An object of the invention is to provide an electrophotographic photoconductor featuring uniform chargeability to a predetermined potential, low residual potential and excellent stability in the operating environment and repeated use thereof, as well as a method of producing the same. An undercoat layer between a substrate and a photosensitive layer is formed by the use of a coating fluid for undercoat layer containing a coupling agent having an unsaturated bond, a metal oxide, a binder and a mixture solvent. The coupling agent increases affinity of the metal oxide for the binder so that the coating fluid does not suffer the aggregation of the metal oxide or gelation thereof, presenting homogeneity and excellent can-stability. Thus is obtained a uniform undercoat layer. A photoconductor having this undercoat layer is adapted to be uniformly charged to a predetermined potential and to suppress the rise of residual potential and particularly the rise of residual potential due to a use thereof under low-temperature, low-humidity conditions or the repeated use thereof over an extended period of time, thus offering a high photosensitivity in a stable manner.

摘要翻译： 本发明的一个目的是提供一种电子照相感光体及其制造方法，该电子照相感光体具有预定电位的均匀带电性，低残留电位和优异的操作环境稳定性及其重复使用。 通过使用含有具有不饱和键的偶联剂，金属氧化物，粘合剂和混合溶剂的底涂层用涂布液，形成基材和感光层之间的底涂层。 偶联剂增加金属氧化物对粘合剂的亲和力，使得涂布液不会发生金属氧化物的凝集或其凝胶化，具有均匀性和优异的罐稳定性。 得到均匀的底涂层。 具有该底涂层的感光体适于均匀地充电至预定电位，并且抑制残留电位的上升，特别是由于在低温，低湿度条件下使用而导致的残留电位的上升，或者其重复使用 延长时间，从而以稳定的方式提供高光敏性。

公开(公告)号：US07803507B2

公开(公告)日：2010-09-28

申请号：US10544454

申请日：2004-02-06

申请人： Tatsuhiro Morita ,  Tomoko Kanazawa ,  Akihiro Kondoh ,  Yohichi Takesawa ,  Takatsugu Obata ,  Shinya Mimura ,  Hiroshi Sugimura

发明人： Tatsuhiro Morita ,  Tomoko Kanazawa ,  Akihiro Kondoh ,  Yohichi Takesawa ,  Takatsugu Obata ,  Shinya Mimura ,  Hiroshi Sugimura

IPC分类号： G03G5/06 ,  G03G5/05

CPC分类号： G03G5/0614 ,  G03G5/056 ,  G03G5/0564 ,  G03G5/0616 ,  G03G5/0666 ,  G03G5/0668 ,  G03G5/0672

摘要： An electrophotographic photoreceptor of high durability capable of providing stable excellent electrical characteristics over a prolonged period of time, which electrophotographic photoreceptor excels in mechanical strength. A photosensitive layer (14) of an electrophotographic photoreceptor (1) includes a polyarylate resin having structural units, for example, those of formula (1) and an enamine compound represented by, for example, formula (2) The variables R1, R2, R3, R4, R7˜R10, X1, Ar1, Ar2, Ar3, Ar4, Ar5, R11, R12, R13, R14, a, m, and n are as defined in the specification. By virtue of these, the electrophotographic photoreceptor (1) of excellent mechanical strength and favorable electrical characteristics can be realized.

摘要翻译： 具有高耐久性的电子照相感光体，其能够在长时间内提供稳定的优异电学特性，该电子照相感光体的机械强度优异。 电子照相感光体（1）的感光层（14）包括具有例如式（1）的结构单元的聚芳酯树脂和由例如式（2）表示的烯胺化合物。变量R1，R2， R3，R4，R7〜R8，X1，Ar1，Ar2，Ar3，Ar4，Ar5，R11，R12，R13，R14，a，m和n如说明书中所定义。 由此，能够实现机械强度优异，电气特性良好的电子照相感光体（1）。

公开(公告)号：US20060286474A1

公开(公告)日：2006-12-21

申请号：US10557254

申请日：2004-05-12

申请人： Tatsuhiro Morita ,  Shinya Mimura ,  Katsuya Takano

发明人： Tatsuhiro Morita ,  Shinya Mimura ,  Katsuya Takano

IPC分类号： G03G5/047

CPC分类号： G03G5/0696

摘要： An electrophotographic photoreceptor which is excellent in the cleaning property and does not deteriorates the image quality for the formed images during long time use, and capable of forming images at high sensitivity, high resolution and high image quality, is provided. A photosensitive layer provided on a conductive substrate of an electrophotographic photoreceptor contains an oxotitanium phthalocyanine of a crystal form showing a diffraction peak at least at 27.3° in view of the Bragg angle 2θ in the X-ray diffraction spectrum and a surface free energy (γ) on a surface thereof is set to range from no less than 20 mN/m to no more than 35 mN/m. Such a inclusion of the oxotitanium phthalocyanine of specified crystal form enables formation of an image excellent in sensitivity and resolution and the control of a foreign matter depositing force when γ is set to an appropriate range, thus delivering a good cleaning performance.

摘要翻译： 提供了一种电子照相感光体，其清洗性能优异，并且不会使长时间使用时形成的图像的图像质量劣化，并且能够以高灵敏度，高分辨率和高图像质量形成图像。 设置在电子照相感光体的导电性基板上的感光层含有X射线衍射光谱中的布拉格角2θ和至少27.3°的衍射峰的结晶形态的氧钛钛酞菁和表面自由能（γ ）设定为不小于20mN / m至不大于35mN / m。 这种包含特定结晶形式的氧钛酞菁可以形成灵敏度和分辨率优异的图像，并且当γ值设定在适当的范围时控制异物沉积力，从而提供良好的清洁性能。

公开(公告)号：US07302210B2

公开(公告)日：2007-11-27

申请号：US10550888

申请日：2004-03-31

申请人： Kotaro Fukushima ,  Hisayuki Utsumi ,  Yohichi Takesawa ,  Shinya Mimura ,  Tatsuhiro Morita ,  Katsuya Takano

发明人： Kotaro Fukushima ,  Hisayuki Utsumi ,  Yohichi Takesawa ,  Shinya Mimura ,  Tatsuhiro Morita ,  Katsuya Takano

IPC分类号： G03G15/00 ,  G03G21/00

CPC分类号： G03G5/04 ,  G03G5/043 ,  G03G5/147

摘要： An electrophotographic photoreceptor using a non-contact type charging process has a creep value CIτ of is 2.70% or more, preferably 3.00% or more, and a Vickers hardness (HV) at its surface of 20≦HV≦25 in a case where a maximum indenting load of 30 mN is loaded to the surface under a circumstance at a temperature of 25° C. and at a relative humidity of 50%. Since such an electrophotographic photoreceptor is excellent in flexibility and has plasticity not too soft nor exhibiting fragility, the amount of film reduction due to wear is decreased during long time use, excellent surface smoothness is ensured, and there is no occurrence of injury or unevenness in density to the formed images.

摘要翻译： 使用非接触式充电方法的电子照相感光体具有2.70％以上，优选为3.00％以上的蠕变值，其表面的维氏硬度（HV）为20〜 在25℃的温度和50％的相对湿度的情况下，将30mN的最大压入载荷加载到表面的情况下，=HV≤25。 由于这种电子照相感光体的柔软性优异，塑性不太软也没有显示脆性，所以在长时间使用时，由于磨损而导致的膜还原量降低，确保了优异的表面平滑性，并且不会发生损伤或不均匀 密度与形成的图像。