公开(公告)号：US20130316277A1

公开(公告)日：2013-11-28

申请号：US13875504

申请日：2013-05-02

Applicant: KONICA MINOLTA, INC.

Inventor： Mari KONISHI ,  Keiichi INAGAKI ,  Toshiyuki FUJITA

IPC: G03G5/147

CPC classification number: G03G5/14734 ,  G03G5/0542 ,  G03G5/0546 ,  G03G5/0592 ,  G03G5/0614 ,  G03G5/09 ,  G03G5/14704 ,  G03G5/14708 ,  G03G5/1473 ,  G03G5/14791

Abstract: The invention provides a means for improving the abrasion resistance and the scratch resistance of a protection layer by increasing the surface hardness of the protection layer of an organic photoreceptor. The invention is an organic photoreceptor constituted by laminating on an electroconductive substrate, a photosensitive layer and a protection layer successively, wherein the protection layer comprises a charge transport substance represented by the following general formula (1), a resin component obtained by curing a curable compound and tin oxide treated with a surface preparation agent having a reactive organic group, and a silica particle; in the general formula (1), R1 and R2 are each independently hydrogen atoms or methyl groups, and R3 is a straight-chain or branched alkyl group having 1 to 5 carbon atoms.

Abstract translation: 本发明提供了通过提高有机感光体的保护层的表面硬度来提高保护层的耐磨性和耐划伤性的手段。 本发明是通过在导电性基材，感光层和保护层上依次层叠而形成的有机感光体，其中保护层包含由以下通式（1）表示的电荷输送物质，其通过将可固化 用具有反应性有机基团的表面处理剂处理的化合物和氧化锡和二氧化硅颗粒; 在通式（1）中，R 1和R 2各自独立地为氢原子或甲基，R 3为具有1〜5个碳原子的直链或支链烷基。

公开(公告)号：US20160054668A1

公开(公告)日：2016-02-25

申请号：US14803718

申请日：2015-07-20

Applicant: Konica Minolta, Inc.

Inventor： Masanori YUMITA ,  Daisuke KODAMA ,  Mari KONISHI

IPC: G03G5/147

CPC classification number: G03G5/14704 ,  G03G5/14713

Abstract: The electrophotographic photoreceptor of the present invention includes a conductive support, a photosensitive layer disposed on the conductive support, and a surface protective layer disposed on the photosensitive layer. The surface protective layer contains a binder resin and a fine particulate material containing at least one compound selected from MgCu2O2, CaCu2O2, SrCu2O2, and BaCu2O2.

Abstract translation: 本发明的电子照相感光体包括导电性支持体，设置在导电性支持体上的感光层和设置在感光层上的表面保护层。 表面保护层含有粘合剂树脂和含有至少一种选自MgCu 2 O 2，CaCu 2 O 2，SrCu 2 O 2和BaCu 2 O 2的化合物的细颗粒材料。

公开(公告)号：US20150355560A1

公开(公告)日：2015-12-10

申请号：US14727056

申请日：2015-06-01

Applicant: Konica Minolta, Inc.

Inventor： Mari KONISHI ,  Toshiyuki Fujita ,  Daisuke Kodama ,  Takeshi Nakamura ,  Toyoko Shibata

IPC: G03G5/06

CPC classification number: G03G5/047 ,  G03G5/0614 ,  G03G5/0668 ,  G03G5/14704 ,  G03G5/14791

Abstract: The electrophotographic photoreceptor of the present invention at least includes a charge-generating layer, a charge-transporting layer, and a surface protective layer sequentially deposited on an electroconductive support, wherein the charge-transporting layer contains a charge-transporting material having an ionization potential (IPA); the surface protective layer contains a binder resin and a metal oxide microparticle having an ionization potential (IPB); and the ionization potential (IPA) and the ionization potential (IPB) satisfy the relationship represented by Expression (A): −0.4 eV≦(IPA−IPB)≦0.4 eV.

Abstract translation: 本发明的电子照相感光体至少包括电荷产生层，电荷传输层和顺序沉积在导电载体上的表面保护层，其中电荷输送层含有具有电离电位的电荷输送材料 （IPA）; 表面保护层含有粘结剂树脂和具有电离电位（IPB）的金属氧化物微粒; 并且电离电位（IPA）和电离电位（IPB）满足式（A）表示的关系：-0.4eV＆nlE;（IPA-IPB）＆nlE; 0.4eV。

公开(公告)号：US20140113224A1

公开(公告)日：2014-04-24

申请号：US14028597

申请日：2013-09-17

Applicant: Konica Minolta , Inc.

Inventor： Toshiyuki FUJITA ,  Mari KONISHI

IPC: G03G13/22

CPC classification number: G03G13/22 ,  G03G5/0614 ,  G03G5/14704 ,  G03G5/14795 ,  G03G9/09716 ,  G03G9/09725

Abstract: A method for forming an electrophotographic image is provided which exhibits high toner transfer efficiency without image defects caused by scratches on a photoreceptor and image blurring under high-humidity conditions. The method for forming an electrophotographic image uses an organic photoreceptor and includes a charging step, exposing step, developing step, transferring step and cleaning step. The organic photoreceptor has a photosensitive layer and a protective layer on an electrically conductive support. The protective layer contains a resin prepared by polymerization of a polymerizable compound, a particulate metal oxide, and a compound represented by a formula (1). The developing step uses a toner containing a silica particle having a number-average primary particle diameter of 70 to 150 nm. The formula (1) is: where R1, R2, R3, and R4 may be same or different and each represents a hydrogen atom or an alkyl group.

Abstract translation: 提供了形成电子照相图像的方法，其表现出高的调色剂转印效率，而没有由感光体上的划痕引起的图像缺陷和在高湿度条件下的图像模糊。 形成电子照相图像的方法使用有机感光体，包括充电步骤，曝光步骤，显影步骤，转印步骤和清洁步骤。 有机感光体在导电支持体上具有感光层和保护层。 保护层含有通过聚合可聚合化合物，颗粒金属氧化物和式（1）表示的化合物制备的树脂。 显影步骤使用含有数均一次粒径为70〜150nm的二氧化硅粒子的调色剂。 式（1）是：其中R 1，R 2，R 3和R 4可以相同或不同，各自表示氢原子或烷基。