公开(公告)号：US5950044A

公开(公告)日：1999-09-07

申请号：US947486

申请日：1997-10-10

申请人： Seiji Ashiya ,  Satoshi Shigezaki

发明人： Seiji Ashiya ,  Satoshi Shigezaki

IPC分类号： G03G15/02 ,  G03G5/06 ,  G03G15/00 ,  G03G21/14 ,  G03G15/05 ,  G03G15/14

CPC分类号： G03G15/5008

摘要： An electrophotographic apparatus includes an electrophotographic photosensitive member, a charging device, an image exposure device, a developing device, a transfer device, and a control device. The control device stops rotation of the electrophotographic photosensitive member after a region of the electrophotographic photosensitive member, which region opposes the transfer device at the time when operation of the transfer device is stopped while the rotation of the electrophotographic photosensitive member is not stopped, passes, by at least one revolution, a position opposing the charging device which is running. The electrophotographic apparatus requires no idle rotation, makes high speed processing possible, suppresses negative and positive ghosting, and suppresses variations in electric characteristics and in image densities between first and second copying operations, thereby enabling images of high quality to be prepared quickly and simply.

摘要翻译： 电子照相设备包括电子照相感光构件，充电装置，图像曝光装置，显影装置，转印装置和控制装置。 控制装置在电子照相感光构件的区域在电子照相感光构件的旋转不停止之后停止转印装置的操作时在电子照相感光构件的区域与转印装置相对的位置上停止电子照相感光构件的旋转， 通过至少一转，与正在运行的充电装置相对的位置。 电子照相设备不需要怠速旋转，可以实现高速处理，抑制负重和正重影，并且抑制第一和第二复印操作之间的电特性和图像浓度的变化，从而能够快速简单地准备高质量的图像。

公开(公告)号：US5582948A

公开(公告)日：1996-12-10

申请号：US406702

申请日：1995-03-20

申请人： Seiji Ashiya

发明人： Seiji Ashiya

IPC分类号： G03G5/00 ,  G03G5/05 ,  G03G5/14

CPC分类号： G03G5/0525 ,  G03G5/142

摘要： A process for producing an electrophotographic photoreceptor comprising a conductive substrate having thereon an underlayer and further thereon a photoconductive layer, the process comprising the steps of: applying a coating composition comprising at least one of a zirconium alkoxide, a zirconium chelate compound, and a silane coupling agent on a conductive substrate; drying it to form an underlayer; atomizing a mixed solution comprising a water-compatible organic solvent and water to bring it into contact with the underlayer; and forming a photoconductive layer on the underlayer.

摘要翻译： 一种用于制造电子照相感光体的方法，该电子照相感光体包括其上具有底层的导电基底，并且还具有光电导层，该方法包括以下步骤：施加包含锆醇盐，锆螯合物和硅烷中的至少一种的涂料组合物 偶联剂在导电基材上; 干燥形成底层; 将包含水相容的有机溶剂和水的混合溶液雾化以使其与底层接触; 并在底层上形成光电导层。

公开(公告)号：US5403688A

公开(公告)日：1995-04-04

申请号：US646312

申请日：1991-01-28

申请人： Seiji Ashiya ,  Taketoshi Hoshizaki ,  Ryosaku Igarashi ,  Koji Bando ,  Masanori Murase ,  Takahiro Suzuki ,  Masahiko Hodumi ,  Sadao Okano

发明人： Seiji Ashiya ,  Taketoshi Hoshizaki ,  Ryosaku Igarashi ,  Koji Bando ,  Masanori Murase ,  Takahiro Suzuki ,  Masahiko Hodumi ,  Sadao Okano

IPC分类号： G03G5/00 ,  G03G5/05 ,  G03G15/08

CPC分类号： G03G5/0525

摘要： A method for determining a termination time of the step of dispersing a coating composition for a photosensitive layer, containing a binder resin, a powdery charge generating material and a solvent, is disclosed, which comprises (i) providing coating (I) on a substrate by coating the coating composition, following by drying, (ii) providing coating (II) on a substrate by dispersing the coating composition using a dispersion medium to fine the powdery charge generating material, followed by drying, (iii) measuring absorbances of coating (I) at two wavelengths within a short wavelength region and a long wavelength region, respectively, of the spectral absorption wavelength of the charge generating material, (iv) measuring absorbances of coating (II) at the two wavelengthes within the short wavelength region and the long wavelength region, respectively, and (v) calculating spectral absorbance ratios of coatings (I) and (II), respectively, from the following equation: ##EQU1## wherein the dispersing of the coating composition is terminated when the ratio of the spectral absorbance ratio of coating (II) to that of coating (I) exceed a predetermined value.

摘要翻译： 公开了一种用于确定分散含有粘合剂树脂，粉末电荷产生材料和溶剂的感光层用涂料组合物的步骤的终止时间的方法，其包括（i）在基材上提供涂层（I） 通过涂覆涂料组合物，然后通过干燥，（ii）通过使用分散介质分散涂料组合物在基材上提供涂层（II），以使粉末电荷产生材料细化，然后干燥，（iii）测量涂层的吸光度（ I）分别在电荷产生材料的光谱吸收波长的短波长区域和长波长区域内的两个波长处，（iv）测量短波长区域内的两个波长处的涂层（II）的吸光度，以及 分别从长波长区域和（v）分别根据以下等式计算涂层（I）和（II）的光谱吸光度比：其中，二 当涂层（II）的光谱吸收比与涂层（I）的光谱吸收比之比超过预定值时，终止涂料组合物的喷涂。

公开(公告)号：US5286587A

公开(公告)日：1994-02-15

申请号：US836383

申请日：1992-02-18

申请人： Seiji Ashiya

发明人： Seiji Ashiya

IPC分类号： G03G5/047 ,  G03G5/05 ,  G03G5/06

CPC分类号： G03G5/047 ,  G03G5/0525 ,  G03G5/06

摘要： An electrophotographic photoreceptor comprising a conductive substrate having thereon at least a charge generating layer and a charge transporting layer is disclosed, in which said charge generating layer is a deposited film of a subliming organic pigment and has an iron content of not more than 100 ppm and a sulfur content of not more than 500 ppm. The electrophotographic photoreceptor has high photosensitivity, high chargeability, small dark decay, low residual potential, and excellent durability.

摘要翻译： 公开了一种电子照相感光体，其包含至少具有电荷产生层和电荷输送层的导电性基板，其中，所述电荷产生层为升华型有机颜料的沉积膜，铁含量不大于100ppm， 硫含量不超过500ppm。 电子照相感光体具有高光敏性，高带电性，小暗衰变，低残留电位和优异的耐久性。

公开(公告)号：US5443934A

公开(公告)日：1995-08-22

申请号：US10755

申请日：1993-01-29

申请人： Takahiro Suzuki ,  Seiji Ashiya ,  Masanori Murase

发明人： Takahiro Suzuki ,  Seiji Ashiya ,  Masanori Murase

IPC分类号： G03G5/14

CPC分类号： G03G5/142

摘要： An electrophotographic photoreceptor comprising an electrically conductive substrate having thereon a subbing layer and a photosensitive layer in sequence, wherein the subbing layer is a layer formed by using a hydrolyzable compound, the layer having a residual organic group content of at least 25 mol % based on the total organic group content of the hydrolyzable compound used, or (ii) by coating a solution of the hydrolyzable compound in an organic solvent in which the hydrolyzable compound has been hydrolyzed to a degree of at least 50%. The coating composition exhibits satisfactory film-forming properties to form a subbing layer without causing cracks which thereby provides an electrophotographic photoreceptor with excellent stability on repeated use.

摘要翻译： 一种电子照相感光体，其具有依次具有底层和感光层的导电性基板，其中，所述底层为使用可水解化合物形成的层，所述层的残留有机基含量为25mol％以上，基于 所使用的可水解化合物的总有机基团含量，或（ii）通过将可水解化合物的溶液在可水解化合物已被水解的有机溶剂中涂覆至少50％的程度。 涂料组合物表现出令人满意的成膜性能，形成底层而不产生裂纹，从而提供重复使用时具有优异稳定性的电子照相感光体。

公开(公告)号：US5324606A

公开(公告)日：1994-06-28

申请号：US977633

申请日：1992-11-17

申请人： Masahiko Hodumi ,  Masanori Murase ,  Sadao Okano ,  Koji Bando ,  Takahiro Suzuki ,  Seiji Ashiya

发明人： Masahiko Hodumi ,  Masanori Murase ,  Sadao Okano ,  Koji Bando ,  Takahiro Suzuki ,  Seiji Ashiya

IPC分类号： G03G5/047 ,  G03G5/06

CPC分类号： G03G5/047 ,  G03G5/0614

摘要： An electrophotographic photoreceptor comprising a conductive substrate having thereon a photosensitive layer as the uppermost layer, in which the photosensitive layer contains two charge transporting materials different in ionization potential, a charge transporting material having a higher ionization potential is present in the amount equimolar to or in an amount less than the equimolar amount to the other charge transporting material having a lower ionization potential. A laminate type electrophotographic photoreceptor comprising a conductive substrate having thereon a charge generating layer and a charge transporting layer, in which the charge generating layer comprises a binder resin and a charge generating material dispersed therein, the charge transporting layer comprises a binder resin and at least two charge transporting materials including a first charge transporting material and a second charge transporting material, the amount of the first charge transporting material is at least 60 wt % based on the total amount of the charge transporting materials, the difference between the highest ionization potential and the lowest ionization potential the charge transporting materials is not more than 0.4 eV, provided that (1) the ionization potentials of all the charge transporting materials are lower than the ionization potential of the charge generating material, or (2) the ionization potential of the first charge transporting material is lower than the ionization potential of the charge generating material, and the ionization potential of the second charge transporting material is higher than the ionization potential of the charge generating material by at least 0.2 eV.

摘要翻译： 一种电子照相感光体，包括其上具有感光层作为最上层的导电基底，其中感光层包含两种电离电位不同的电荷输送材料，具有较高离子化电位的电荷输送材料以等摩尔于或相等的量存在 相对于具有较低电离电位的其他电荷输送材料的等摩尔量的量。 一种层叠型电子照相感光体，其特征在于，具有导电性基板，其上具有电荷产生层和电荷输送层，其中所述电荷产生层包含粘合剂树脂和分散在其中的电荷产生材料，所述电荷输送层至少包含粘合剂树脂 包括第一电荷输送材料和第二电荷输送材料的两种电荷输送材料，第一电荷输送材料的量相对于电荷输送材料的总量为至少60重量％，最高电离电位与 电荷输送材料的电离电位最低不超过0.4eV，条件是（1）所有电荷输送材料的电离电位低于电荷产生材料的电离电位，或（2） 第一电荷输送材料低于 电荷产生材料的电离电位和第二电荷输送材料的电离电位比电荷产生材料的电离电位高至少0.2eV。

公开(公告)号：US5294509A

公开(公告)日：1994-03-15

申请号：US4259

申请日：1993-01-14

申请人： Seiji Ashiya ,  Takahiro Suzuki ,  Masanori Murase

发明人： Seiji Ashiya ,  Takahiro Suzuki ,  Masanori Murase

IPC分类号： G03G5/047 ,  G03G5/05 ,  G03G5/06

CPC分类号： G03G5/0631 ,  G03G5/047 ,  G03G5/06

摘要： An electrophotographic photoreceptor comprising a conductive substrate having thereon a charge generating layer comprising a binder resin having dispersed therein a charge generating material and a charge transporting layer containing a charge transporting material is disclosed, wherein the ionization potential of the binder resin, I.sub.pb, the ionization potential of the charge generating material, I.sub.pg, and the ionization potential of the charge transporting material, I.sub.pt, satisfy the following relationship:I.sub.pg .ltoreq.I.sub.pb

摘要翻译： 公开了一种电子照相感光体，其具有导电性基材，其上具有电荷产生层，该电荷产生层包含分散有电荷产生材料的粘合剂树脂和含有电荷输送材料的电荷输送层，其中粘合剂树脂的电离电位Ipb，电离 电荷产生材料的电位Ipg和电荷输送材料的电离电位Ipt满足以下关系：Ipg <= Ipb

公开(公告)号：US5200286A

公开(公告)日：1993-04-06

申请号：US652254

申请日：1991-02-06

申请人： Yuichi Yashiki ,  Kazuya Hongo ,  Seiji Ashiya

发明人： Yuichi Yashiki ,  Kazuya Hongo ,  Seiji Ashiya

IPC分类号： G03G5/047 ,  G03G5/05

CPC分类号： G03G5/0507 ,  G03G5/047 ,  G03G5/0514 ,  G03G5/0517 ,  Y10S430/10

摘要： An electrophotographic photoreceptor is disclosed, comprising a substrate having thereon at least an electric charge generating layer and an electric charge transporting layer, characterized in that the electric charge generating layer is formed from a coating solution which is prepared by dispersing an electric charge generating material and an acid in a binder resin solution. Useful acids are inorganic acids, including hydrochloric acid, sulfuric acid, hydrobromic acid and phosphoric acid, and organic acids, including formic acid, acetic acid, propionic acid, butryric acid, lactic acid, benzoic acid and sulfonic acid. This material has an increased sensitivity and thus can be effectively used in copying machines.

摘要翻译： 公开了一种电子照相感光体，其包括至少具有电荷产生层和电荷输送层的基板，其特征在于，所述电荷产生层由通过分散电荷产生材料制备的涂布溶液形成， 粘合剂树脂溶液中的酸。 有用的酸是无机酸，包括盐酸，硫酸，氢溴酸和磷酸，以及有机酸，包括甲酸，乙酸，丙酸，丁酸，乳酸，苯甲酸和磺酸。 该材料具有增加的灵敏度，因此可有效地用于复印机。

公开(公告)号：US5188916A

公开(公告)日：1993-02-23

申请号：US757028

申请日：1991-09-09

申请人： Masahiko Hodumi ,  Koji Bando ,  Takahiro Suzuki ,  Shigeto Hashiba ,  Yoshiyuki Ono ,  Sadao Okano ,  Seiji Ashiya ,  Masanori Murase

发明人： Masahiko Hodumi ,  Koji Bando ,  Takahiro Suzuki ,  Shigeto Hashiba ,  Yoshiyuki Ono ,  Sadao Okano ,  Seiji Ashiya ,  Masanori Murase

IPC分类号： G03G5/14

CPC分类号： G03G5/144 ,  G03G5/142

摘要： A novel electrophotographic photoreceptor is disclosed, comprising an undercoating layer provided on an electrically conductive substrate having thereon a light-sensitive layer, wherein the undercoating layer is obtained by coating a solution of a composition comprising zirconium and silicon or a solution of a mixture of a zirconium acetyl acetonate compound and a silane coupling agent, the silicon content in the composition comprising zirconium and silicon is in the range of 5 to 35 mol % based on the total amount of zirconium and silicon, and the hardened undercoating layer obtained from the zirconium acetyl acetonate compound and silane coupling agent is a layer having a hardening degree of 1.2 or less.

摘要翻译： 公开了一种新颖的电子照相感光体，其包括设置在其上具有感光层的导电基底上的底涂层，其中底涂层是通过涂布包含锆和硅的组合物的溶液或将 乙酰丙酮锆化合物和硅烷偶联剂，包含锆和硅的组合物中的硅含量相对于锆和硅的总量为5〜35摩尔％，并且由乙酰基锆制得的硬化底涂层 丙烯酸酯化合物和硅烷偶联剂是硬化度为1.2以下的层。

公开(公告)号：US5470682A

公开(公告)日：1995-11-28

申请号：US10858

申请日：1993-01-29

申请人： Seiji Ashiya ,  Takahiro Suzuki ,  Masanori Murase

发明人： Seiji Ashiya ,  Takahiro Suzuki ,  Masanori Murase

IPC分类号： G03G5/08 ,  G03G5/082 ,  G03G5/087

CPC分类号： G03G5/087 ,  G03G5/08207

摘要： An electrophotographic photoreceptor comprising a photosensitive layer containing granular trigonal selenium which has a mean particle diameter of not more than 5 .mu.m and which has absorption peaks in the X-ray diffraction spectrum using CuK.alpha. characteristic X-rays at Bragg angles (2.degree..theta..+-.0.2.degree.) of 23.5.degree., 29.7.degree., 41.4.degree., and 45.4.degree., is disclosed, which has high photosensitivity and low residual potential, maintains its potential characteristics in a stable manner on repeated use, and exhibits sufficient photosensitivity even when applied to high-speed copying.

摘要翻译： 一种电子照相感光体，其包含平均粒径不大于5μm的含有颗粒状三角硒的感光层，并且在X射线衍射光谱中具有吸收峰，使用CuKα特征X射线（布拉格角（2° +/- 0.2°）为23.5°，29.7°，41.4°和45.4°，具有高光敏性和低残留电位，重复使用时以稳定的方式保持其电位特性，即使在 适用于高速复印。