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18 条记录 (耗时 0.022 秒)

    Naphthalenetetracarboxylic acid diimide derivatives and photosensitive materials for electrophotography
    12.
    发明授权
    Naphthalenetetracarboxylic acid diimide derivatives and photosensitive materials for electrophotography 有权
    萘四甲酸二酰亚胺衍生物和电子照相用感光材料

    公开(公告)号：US06174638B1

    公开(公告)日：2001-01-16

    申请号：US09320562

    申请日：1999-05-27

    申请人： Kou Ishigami ,  Fumio Sugai ,  Yasufumi Mizuta

    发明人： Kou Ishigami ,  Fumio Sugai ,  Yasufumi Mizuta

    IPC分类号： G03G506

    CPC分类号： G03G5/0651

    摘要： Naphthalenetetracarboxylic acid diimide derivatives represented by the general formula (1), wherein m and n are integers inclusive of 0 but not larger than 6, and are different from each other, R1 is a hydrogen atom, an alkyl group, an alkoxyl group or a halogen atom, either one of R2 or R3 is a substituted or unsubstituted aryl group, and the other one is an alkyl group, an alkoxyl group or an amino group, and wherein when R2 or R3 is an alkoxyl group or an amino group, the number n or m of methylene chains to which this group is bonded is not zero. The derivatives exhibit excellent solubility in an organic solvent, excellent compatibility with a resin binder and excellent photosensitivity, and are very useful as an electron-transporting agent for the photosensitive material for electrophotography.

    摘要翻译： 由通式（1）表示的萘四甲酸二酰亚胺衍生物，其中，m和n为0以上且6以下的整数，并且彼此不同，R 1为氢原子，烷基，烷氧基或 卤素原子，R2或R3中的任一个为取代或未取代的芳基，另一个为烷基，烷氧基或氨基，并且其中当R 2或R 3为烷氧基或氨基时， 该基团的亚甲基链数n或m不为零。该衍生物在有机溶剂中表现出优异的溶解性，与树脂粘合剂的相容性优异，并且具有优异的光敏性，并且作为光敏电子传输剂是非常有用的 电子照相用材料

    Electrophotographic photosensitive element comprising a surface protective layer comprising an etherified melamine-formaldehyde resin
    14.
    发明授权
    Electrophotographic photosensitive element comprising a surface protective layer comprising an etherified melamine-formaldehyde resin 失效
    电子照相感光元件包括含有醚化的三聚氰胺 - 甲醛树脂的表面保护层

    公开(公告)号：US5260157A

    公开(公告)日：1993-11-09

    申请号：US599858

    申请日：1990-10-19

    申请人： Yasufumi Mizuta ,  Akihiko Kawahara ,  Kaname Nakatani ,  Nariaki Tanaka

    发明人： Yasufumi Mizuta ,  Akihiko Kawahara ,  Kaname Nakatani ,  Nariaki Tanaka

    IPC分类号： G03G5/147

    CPC分类号： G03G5/14704 ,  G03G5/14769 ,  G03G5/14773 ,  G03G5/14791

    摘要： An electrophotographic photosensitive element comprising a photosensitive layer and a surface protective layer on the photosensitive layer, the surface protective layer comprising a thermosetting silicone resin, and a methyl-butyl etherified melamine-formaldehyde resin in an amount of from 0.1 to 30 parts by weight per 100 parts by weight of the non-volatile solid components of the thermosetting silicone resin, an electrophotographic photosensitive element comprising a photosensitive layer and a surface protective layer on the photosensitive layer, the surface protective layer comprising a thermosetting silicone resin, and an acrylic copolymer having an average molecular weight of 6,000 or less in an amount of from 0.1 to 30 parts by weight per 100 parts by weight of the non-volatile solid components of the thermosetting silicone resin, and an electrophotographic photosensitive element comprising a photosensitive layer and a surface protective layer on the photosensitive layer, the surface protective layer containing a thermosetting silicone resin, a methyl etherified melamine-formaldehyde resin and/or a methyl-butyl mixed etherified melamine-formaldehyde resin in an amount of from 0.1 to 50 parts by weight per 100 parts by weight of the non-volatile solid components of the thermosetting silicone resin, and a thermoplastic resin in an amount of from 1 to 11 wt % to a total amount of the non-volatile solid components of the thermosetting silicone resin and the methyl etherified melamine-formaldehyde resin and/or the methyl-butyl mixed etherified melamine-formaldehyde resin.

    Image forming device using a single-layer-type electrophotographic photoconductor and image forming method using the same
    15.
    发明授权
    Image forming device using a single-layer-type electrophotographic photoconductor and image forming method using the same 有权
    使用单层电子照相感光体的图像形成装置及使用其的图像形成方法

    公开(公告)号：US07555241B2

    公开(公告)日：2009-06-30

    申请号：US11503812

    申请日：2006-08-14

    申请人： Makoto Shishido ,  Shiho Okawa ,  Eiichi Miyamoto ,  Yasufumi Mizuta

    发明人： Makoto Shishido ,  Shiho Okawa ,  Eiichi Miyamoto ,  Yasufumi Mizuta

    IPC分类号： G03G15/00 ,  G03G21/00

    CPC分类号： G03G21/06

    摘要： An image forming apparatus which can exhibit an excellent charge eliminating effect by erasing a transfer memory using a precharging device with optimized conditions even when a positively-charged single-layer-type electrophotographic photoconductor is used as a photoconductor. In the image forming apparatus which sequentially arranges a charging device, a developing device, a transfer device, and a charge eliminating device around a single-layer-type electrophotographic photoconductor, the charging device charges a surface of the single-layer-type electrophotographic photoconductor with a positive polarity, a precharging device having a conductive member is arranged on an upstream side of the charge eliminating device, the conductive member is brought into contact with the electrophotographic photoconductor, and a current density Ib (μA/m2) of the injected current into the photoconductor from the conductive member is set to a value of 700 (μA/m2) or more.

    摘要翻译： 即使使用带正电的单层型电子照相感光体作为光电导体，也能够利用优化条件的预充电装置擦除转印存储器，能够表现出优异的电荷消除效果的图像形成装置。 在单层型电子照相光电导体周围依次配置充电装置，显影装置，转印装置和电荷消除装置的图像形成装置中，充电装置对单层型电子照相感光体 具有正极性，具有导电部件的预充电装置设置在电荷消除装置的上游侧，导电部件与电子照相感光体接触，并且注入电流的电流密度Ib（μA/ m 2） 从导电部件入射到感光体中的值设定为700（μmA/ m 2）以上。

    Electrophotosensitive material containing disazo compound as charge-generating agent
    16.
    发明授权
    Electrophotosensitive material containing disazo compound as charge-generating agent 失效
    含有双偶氮化合物作为电荷发生剂的电子感光材料

    公开(公告)号：US5424157A

    公开(公告)日：1995-06-13

    申请号：US158783

    申请日：1993-12-01

    申请人： Eiichi Miyamoto ,  Yasufumi Mizuta

    发明人： Eiichi Miyamoto ,  Yasufumi Mizuta

    IPC分类号： G03G5/06

    CPC分类号： G03G5/0683 ,  G03G5/0679 ,  G03G5/0681

    摘要： An electrophotosensitive material containing, as a charge-generating agent, a compound represented by the following general formula (1), ##STR1## wherein Cp is an azo coupling component, Y is a divalent organic group containing at least one aromatic ring or heterocyclic ring, R1 and R8 are alkyl groups or halogen atoms, respectively, and R2 and R4 are alkyl groups, halogen atoms or hydrogen atoms, respectively. The charge-generating agent used here remains chemically stable and exhibits excellent recurring property and charge-forming efficiency.

    摘要翻译： 含有作为电荷产生剂的由以下通式（1）表示的化合物的光敏材料：其中Cp是偶氮偶合组分，Y是含有至少一个芳族环或杂环的二价有机基团 R 1和R 8分别是烷基或卤原子，R 2和R 4分别是烷基，卤素原子或氢原子。 这里使用的电荷产生剂保持化学稳定，显示出优异的重复性和电荷形成效率。