公开(公告)号：US3930850A

公开(公告)日：1976-01-06

申请号：US384294

申请日：1973-07-31

申请人： Shoji Matsumoto ,  Hitoshi Nishihama ,  Tatsuo Aizawa

发明人： Shoji Matsumoto ,  Hitoshi Nishihama ,  Tatsuo Aizawa

IPC分类号： G03G15/05 ,  G03G5/00 ,  G03G5/02 ,  G03G15/01 ,  G03G15/18 ,  G03G15/22 ,  G03G13/18 ,  G03G13/01 ,  G03G13/22

CPC分类号： G03G15/0147 ,  G03G15/18 ,  G03G15/226 ,  G03G2215/018 ,  G03G2215/0626

摘要： An electrophotographic process comprising forming an electrostatic image on the surface of a sensitive member, transferring the electrostatic image onto the surface of a transfer member, and developing the image so transferred. The process specifically involves using an overcoated sensitive member consisting essentially of an electrically conductive base, a photoconductive layer and a light-transmitting surface insulating layer, subjecting the sensitive member to a primary charging in a specific polarity using a direct current corona discharge, exposing light and dark images on the surface of the sensitive member and simultaneously subjecting it to a secondary charging until the surface of the sensitive member has the same polarity as in the primary charging and its potential becomes substantially equal to the untransferable upper limit potential, exposing the entire surface of the sensitive member to render the potential of the dark image area higher than the untransferable upper limit potential without substantially changing the potential of the light image area, transferring the electrostatic image so formed on the surface of the sensitive member to the surface of a transfer member, and then developing the electrostatic image so transferred thereby to form visible images.

公开(公告)号：US4415645A

公开(公告)日：1983-11-15

申请号：US17804

申请日：1979-03-05

申请人： Toshihiro Kouchi ,  Tatsuo Aizawa

发明人： Toshihiro Kouchi ,  Tatsuo Aizawa

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/06

CPC分类号： G03G9/0825 ,  G03G9/0827 ,  Y10S430/104 ,  Y10S430/105

摘要： A particulate composite developer for electrophotography is disclosed, which has a novel dispersion structure comprising a continuous phase consisting of a homogeneous mixture of a resin and a pigment and a dispersed phase consisting of spherical particles of a soft parting or fixing material having an emulsion grade size and being dispersed in the continuous phase. This particulate developer has in combination improved adaptability to the developing operation, excellent transferring and cleaning properties, good ability to form a sharp image free of fog and good fixing property not causing an offset phenomenon.

公开(公告)号：US4267246A

公开(公告)日：1981-05-12

申请号：US123463

申请日：1980-02-21

申请人： Katsumi Nishibayashi ,  Yoshimi Amagai ,  Norio Hikake ,  Toshihiro Kouchi ,  Tatsuo Aizawa

发明人： Katsumi Nishibayashi ,  Yoshimi Amagai ,  Norio Hikake ,  Toshihiro Kouchi ,  Tatsuo Aizawa

IPC分类号： G03G9/087 ,  G03G11/00 ,  G03G13/16

CPC分类号： G03G9/08731 ,  G03G9/08702 ,  G03G9/08715 ,  G03G9/08717 ,  G03G9/08724 ,  G03G9/08737

摘要： A developer for electrostatic images comprising a binder medium and a pigment dispersed in the binder medium is disclosed. This binder medium comprises (A) a thermoplastic or rubbery polymer containing a member selected from the group consisting of a halogen atom and a nitrile group at a concentration of at least 100 milliequivalents per 100 g of the polymer and (B) a binder having a melting temperature lower than that of the polymer (A) at an (A)/(B) mixing weight ratio of from 1/20 to 1/1. The halogen- or nitrile-containing polymer (A) is present in the form of fine particles dispersed in the continuous phase of the binder (B). This developer has good flowability and charge characteristics at the developing step and shows an excellent offset-preventing effect at the fixing step.

摘要翻译： 公开了一种用于静电图像的显影剂，其包含粘合剂介质和分散在粘合剂介质中的颜料。 该粘合剂介质包含（A）含有选自卤素原子和腈基的成员的热塑性或橡胶状聚合物，其浓度为每100g聚合物至少为100毫当量，和（B）具有 （A）/（B）混合重量比为1/20至1/1的熔融温度低于聚合物（A）。 含卤素或含腈聚合物（A）以分散在粘合剂（B）的连续相中的细颗粒的形式存在。 该显影剂在显影步骤中具有良好的流动性和充电特性，并且在定影步骤中显示出优异的防偏移效果。

公开(公告)号：US4265992A

公开(公告)日：1981-05-05

申请号：US929411

申请日：1978-07-31

申请人： Toshihiro Kouchi ,  Hiroshi Takayama ,  Tatsuo Aizawa

发明人： Toshihiro Kouchi ,  Hiroshi Takayama ,  Tatsuo Aizawa

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/087 ,  G03G9/14

CPC分类号： G03G9/0839 ,  G03G9/0833 ,  G03G9/08704 ,  G03G9/08706 ,  G03G9/08748 ,  G03G9/08775

摘要： In a one-component type developer for electrophotography consisting essentially of a dry blend of fixing magneto-sensitive particles and flowability- and electric resistance-controlling fine particles, when an aromatic vinyl resin and/or an acrylic resin is used as a binder resin for the magneto-sensitive particles in combination with a low molecular weight olefin resin, the magneto-sensitive particles are much improved in the property of holding the flowability- and electric resistance-controlling fine particles on the surfaces thereof. Accordingly, these fine particles cannot be substantially separated from the magneto-sensitive particles under agitation conditions, development conditions and fixing conditions. As a result, contamination of the interior of a copying machine, especially an optical system, can be completely prevented, and also contamination of the background can be completely prevented. Further, the resulting fixed images have a very high resistance to friction and abrasion, and troubles such as blurring and flow of the image are not caused at all.

公开(公告)号：US4259008A

公开(公告)日：1981-03-31

申请号：US28791

申请日：1979-04-10

申请人： Ryutaro Yamagata ,  Sohei Matsuo ,  Shigeo Koyama ,  Nobuhiko Kozuka ,  Yasusuke Tohi ,  Tatsuo Aizawa

发明人： Ryutaro Yamagata ,  Sohei Matsuo ,  Shigeo Koyama ,  Nobuhiko Kozuka ,  Yasusuke Tohi ,  Tatsuo Aizawa

IPC分类号： G03G15/00 ,  G03G15/30 ,  G03B27/50 ,  G03B29/00

CPC分类号： G03G15/6523 ,  G03G15/30

摘要： Improvements are provided in and relating to an electrostatic copying apparatus including a housing, a support for supporting an original to be copied, the support being mounted on the housing and having a transparent plate for supporting the original thereon and a holding member for covering the original on the transparent plate, a system for forming a copied image disposed within the housing and having an optical system for projecting the image of the original on the transparent plate, and a system for transferring a copying paper synchronously with the scanning of the original which is effected by the relative movement of the original holder and the optical system. The improvements include an improvement in the control of the cutting of the copying paper where the copying paper-transferring system includes a system for supplying a roll of copying paper; an improvement in a device for starting the supply of copying paper synchronously with the scanning of the image of the original; an improvement in a device for supplying the roll of copying paper in the copying paper-transferring system; and an improvement in a device for supplying a copying paper in sheet form in the copying paper-transferring system.

摘要翻译： 在静电复印设备中提供改进，该静电复印设备包括外壳，用于支撑要复印的原稿的支撑件，支撑件安装在外壳上并具有用于支撑原稿的透明板和用于覆盖原稿的保持构件 在透明板上形成一个用于形成复制图像的系统，该系统设置在壳体内并具有用于将原稿的图像投影在透明板上的光学系统，以及与原稿的扫描同步地传送复印纸的系统， 通过原始支架和光学系统的相对运动来实现。 这些改进包括改进复印纸切割的控制，其中复印纸转印系统包括用于提供一卷复印纸的系统; 用于与原稿的图像的扫描同步地开始供给复印纸的装置的改进; 用于在复印纸转印系统中提供复印纸卷的装置的改进; 以及用于在复印纸转印系统中以纸张形式提供复印纸的装置的改进。

公开(公告)号：US4245025A

公开(公告)日：1981-01-13

申请号：US940748

申请日：1978-09-08

申请人： Mamoru Kato ,  Susumu Yamaura ,  Yasutoki Kamezawa ,  Tatsuo Aizawa

发明人： Mamoru Kato ,  Susumu Yamaura ,  Yasutoki Kamezawa ,  Tatsuo Aizawa

IPC分类号： D21H17/37 ,  G03G7/00 ,  G03G13/14 ,  B32B9/04

CPC分类号： G03G7/004 ,  Y10S428/913 ,  Y10T428/31855

摘要： A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) 100 parts by weight of thermoplastic acrylic-styrene copolymer and (B) 10 to 100 parts by weight of dry method finely divided silica is disclosed.In this transfer sheet, the electric resistance can be maintained at a high level even under high humidity conditions, and a toner image can be transferred on this transfer sheet at a high transfer efficiency without broadening of contours of the image. This transfer sheet has feel and touch quite similar to those of ordinary paper and is very excellent in graphic characteristics.

摘要翻译： 一种用于在静电摄影或静电印刷中静电转印导电或电半导电调色剂的转印片，其包括形成在基材的至少一个表面上的基材和调色剂接收层，该调色剂接收层含有 公开了包含（A）100重量份热塑性丙烯酸 - 苯乙烯共聚物和（B）10至100重量份的干法细碎二氧化硅的组合物。 在该转印片中，即使在高湿度条件下也可以将电阻保持在高水平，并且可以以高转印效率将调色剂图像转印到转印片上，而不会使图像的轮廓变宽。 这种转印纸的感觉和触感与普通纸的感觉和触感非常相似，并且图形特性非常优异。

公开(公告)号：US4232101A

公开(公告)日：1980-11-04

申请号：US919674

申请日：1978-06-27

申请人： Hideo Fukuda ,  Hiroichi Morikawa ,  Yasutoki Kamezawa ,  Tatsuo Aizawa

发明人： Hideo Fukuda ,  Hiroichi Morikawa ,  Yasutoki Kamezawa ,  Tatsuo Aizawa

IPC分类号： G03G5/14 ,  D21H19/00 ,  G03G5/00 ,  G03G5/10

CPC分类号： G03G5/105 ,  G03G5/101 ,  G03G5/107 ,  Y10T428/254

摘要： A photosensitive paper for electrophotography comprising a paper substrate, an electrophotographic photosensitive layer formed on one surface of the substrate and an electrically conductive coating layer formed on the other surface of the substrate, which electrically conductive coating layer comprises an electrically conductive binder medium and a fine powder of a fluorine resin distributed predominantly in the surface portion of the electrically conductive coating layer, is disclosed.This photosensitive paper is satisfactory in all of the following properties; adaptability to the paper feeding operation, the scratch resistance of the photosensitive layer, the blocking resistance and electric characteristics irrespective of the humidity conditions in the operation atmosphere.

摘要翻译： 一种用于电子照相的感光纸，其包括纸基材，形成在所述基材的一个表面上的电子照相感光层和形成在所述基材的另一表面上的导电涂层，所述导电涂层包含导电粘合剂介质和细 公开了主要分布在导电涂层的表面部分中的氟树脂粉末。 该光敏纸在以下所有性能中均令人满意; 适应于送纸操作，感光层的耐擦伤性，抗粘连性和电特性，而与操作气氛中的湿度条件无关。

公开(公告)号：US4168338A

公开(公告)日：1979-09-18

申请号：US831862

申请日：1977-09-09

申请人： Mamoru Kato ,  Susumu Yamaura ,  Yasutoki Kamezawa ,  Tatsuo Aizawa

发明人： Mamoru Kato ,  Susumu Yamaura ,  Yasutoki Kamezawa ,  Tatsuo Aizawa

IPC分类号： D21H19/24 ,  D21H21/14 ,  G03G7/00 ,  G03G13/16 ,  B32B27/38

CPC分类号： G03G7/0046 ,  G03G13/16 ,  G03G7/004 ,  Y10S428/914 ,  Y10T428/31515 ,  Y10T428/31522 ,  Y10T428/31667 ,  Y10T428/31699 ,  Y10T428/31906 ,  Y10T428/31913 ,  Y10T428/31928

摘要： A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) a thermoplastic acrylic polymer having a carboxyl group content of 2 to 30% by weight and (B) a thermosetting resin reactive with the acrylic polymer (A), and a process for preparing this transfer sheet by using an aqueous coating composition are disclosed. In this transfer sheet, the electric resistance can be maintained at a high level even under high humidity conditions, and a toner image can be transferred on this transfer sheet at a high transfer efficiency.

摘要翻译： 一种用于在静电摄影或静电印刷中静电转印导电或电半导电调色剂的转印片，其包括形成在基材的至少一个表面上的基材和调色剂接收层，该调色剂接收层含有 组合物，其包含（A）羧基含量为2〜30重量％的热塑性丙烯酸类聚合物和（B）与丙烯酸类聚合物（A）反应的热固性树脂，以及通过使用水性涂料制备该转印片材的方法 公开了组合物。 在该转印片中，即使在高湿度条件下也可以将电阻保持在高水平，并且可以以高转印效率将调色剂图像转印到转印片上。

公开(公告)号：US4108786A

公开(公告)日：1978-08-22

申请号：US641285

申请日：1975-12-16

申请人： Hiroshi Takayama ,  Tatsuo Aizawa

发明人： Hiroshi Takayama ,  Tatsuo Aizawa

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/14

CPC分类号： G03G9/0825 ,  G03G9/0827 ,  G03G9/083 ,  G03G9/0838 ,  Y10S430/104

摘要： A magnetic toner for electrostatic photography consisting essentially of spherical particles of a composition comprising a fine powder of a magnetic material having an average particle size not exceeding 1000 m.mu. and being dispersed in a binder resin, said powdery magnetic material being present in an amount of 25 to 75% by weight based on the composition, spherical particles of said composition having such a particle size distribution that particles having a particle size larger than 44 .mu. occupy up to 10% of the total particles and particles having a particle size smaller than 2 .mu. occupy up to 10% of the total particles, wherein said fine powder of the magnetic material is distributed predominantly in the surface layer portion of each spherical particle and said spherical particles have a volume resistivity not higher than 1 .times. 10.sup.11 .OMEGA.-cm as measured in a magnetic field of about 680 gauss under a voltage of 1000 V.

摘要翻译： 一种用于静电摄影的磁性调色剂，其基本上由包括平均粒度不超过1000μm的磁性材料的细粉末并分散在粘合剂树脂中的组合物的球形颗粒组成，所述粉末状磁性材料以 基于组合物为25〜75重量％，所述组合物的球形粒子具有粒径分布，粒径大于44μm的粒子占总粒子的10％，粒径小于2的粒子 mu占总粒子的10％，其中所述磁性材料的细粉末主要分布在每个球形颗粒的表面层部分中，并且所测量的球形颗粒的体积电阻率不高于1×1011欧姆 - 厘米 在1000V的电压下在约680高斯的磁场中。

公开(公告)号：US4081571A

公开(公告)日：1978-03-28

申请号：US599953

申请日：1975-07-29

申请人： Hitoshi Nishihama ,  Katsuhiko Gotoda ,  Minoru Motomura ,  Takanobu Nakajima ,  Tatsuo Aizawa

发明人： Hitoshi Nishihama ,  Katsuhiko Gotoda ,  Minoru Motomura ,  Takanobu Nakajima ,  Tatsuo Aizawa

IPC分类号： G03G15/08 ,  G03G15/09 ,  G03G13/08 ,  G03G13/09

CPC分类号： G03G15/0914 ,  G03G15/082 ,  G03G15/09

摘要： Method and apparatus for developing an electrostatic latent image formed on the surface of an electrostatic latent image-bearing material by applying a powdery developer, wherein the surface of a developer-retaining member retaining a layer of the powdery developer thereon is brought into rolling contact with the surface of the image-bearing material in such a relation that a reservoir zone of the developer is formed at least upstream of the zone of rolling contact between the two surfaces, and the developer in the reservoir zone is physically disturbed.