公开(公告)号：US20230251585A1

公开(公告)日：2023-08-10

申请号：US17902401

申请日：2022-09-02

Applicant: Fujifilm Business Innovation Corp.

Inventor： Masahiro IWASAKI ,  Yuki Oyamada ,  Keisuke Kusano ,  Wataru Yamada

IPC: G03G5/05 ,  G03G5/14 ,  G03G5/06 ,  G03G21/18

CPC classification number: G03G5/056 ,  G03G5/142 ,  G03G5/06142 ,  G03G5/06144 ,  G03G21/1814

Abstract: An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer on the conductive substrate, and a photosensitive layer on the undercoat layer, in which the undercoat layer is formed of a cured product of a composition that contains a reactive group-containing triarylamine compound, a curing agent, and an electron transport material and that has a butyral resin content of 0 mass % or more and 5 mass % or less relative to all solid components in the undercoat layer.

公开(公告)号：US20230152720A1

公开(公告)日：2023-05-18

申请号：US18055705

申请日：2022-11-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Akira Okano ,  Takeaki Kumagai ,  Atsushi Hori ,  Megumi Uchino ,  Koji Sato

IPC: G03G5/14 ,  G03G7/00

CPC classification number: G03G5/142 ,  G03G7/0053

Abstract: An electrophotographic belt includes a base layer containing a binder resin and carbon black in the binder resin. The binder resin contains at least one resin selected from the group consisting of PEEK and PPS. A water content calculated by ((X2−X1)/X2)×100 is 0.6% where X1 is a mass of a specimen cut out of the base layer when in a nitrogen atmosphere a temperature of the specimen is increased from 30° C. to 100° C. at a rate of 20° C./min. and maintained at 100° C. for 30 min, and X2 is a mass of the specimen when in a nitrogen atmosphere the specimen is thereafter cooled from 100° C. to 30° C. at a rate of 20° C./min. and the specimen is left to stand in the air under an environment of a temperature of 23° C. and a relative humidity of 50% for 48 hours.

公开(公告)号：US10073405B2

公开(公告)日：2018-09-11

申请号：US15358378

申请日：2016-11-22

Applicant: FUJI XEROX CO., LTD.

Inventor： Akihiro Kawasaki ,  Hirofumi Nakamura

IPC: G03G15/16 ,  G03G5/14 ,  G03G15/00 ,  G03G5/04

CPC classification number: G03G15/75 ,  G03G5/04 ,  G03G5/142 ,  G03G5/144 ,  G03G15/1605

Abstract: An image forming apparatus includes: an electrophotographic photoreceptor that includes an electroconductive substrate, an undercoat layer which is provided on the electroconductive substrate and has electrostatic capacitance per unit area of from 2.5×10−11 F/cm2 to 2.5×10−10 F/cm2, and a photosensitive layer provided on the undercoat layer; a charging unit; an electrostatic latent image forming unit; a developing unit; an intermediate transfer member; a primary transfer unit that primarily transfers the toner image formed on the surface of the electrophotographic photoreceptor, onto the surface of an intermediate transfer member, while providing a primary transfer current value of from 80 μA to 160 μA; and a secondary transfer unit that secondarily transfers the toner image transferred onto the surface of the intermediate transfer member, onto a surface of a recording medium.

公开(公告)号：US09958796B2

公开(公告)日：2018-05-01

申请号：US15442846

申请日：2017-02-27

Applicant: Konica Minolta, Inc.

Inventor： Masanori Yumita ,  Hirofumi Hayata

IPC: G03G5/00 ,  G03G5/047 ,  G03G5/147 ,  G03G5/05 ,  G03G15/00

CPC classification number: G03G5/047 ,  G03G5/0539 ,  G03G5/0609 ,  G03G5/0629 ,  G03G5/0633 ,  G03G5/064 ,  G03G5/0661 ,  G03G5/142 ,  G03G5/14704 ,  G03G5/14708 ,  G03G5/14713 ,  G03G5/14726 ,  G03G5/14734 ,  G03G5/14786 ,  G03G5/14791 ,  G03G5/14795 ,  G03G15/00 ,  G03G15/75 ,  G03G2215/0135

Abstract: An electrophotographic photoreceptor includes an intermediate layer, a photosensitive layer, and a surface layer laminated on a conductive support in this order, wherein a cured product of a polymerizable monomer contains an electron transport agent and n-type metal oxide fine particles to which a reactive organic group is bonded in the surface layer.

公开(公告)号：US09921498B2

公开(公告)日：2018-03-20

申请号：US15186749

申请日：2016-06-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kunihiko Sekido ,  Masashi Nishi ,  Michiyo Sekiya ,  Kei Tagami

IPC: G03G5/14 ,  G03G5/04 ,  G03G15/00 ,  G03G21/18

CPC classification number: G03G5/04 ,  G03G5/065 ,  G03G5/0657 ,  G03G5/142 ,  G03G15/75 ,  G03G21/18

Abstract: Provided is an electrophotographic photosensitive member including a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer, in which the undercoat layer contains a polymer of a composition containing a compound represented by the formula (1).

公开(公告)号：US20170277049A1

公开(公告)日：2017-09-28

申请号：US15210526

申请日：2016-07-14

Applicant: FUJI XEROX CO., LTD.

Inventor： Wataru YAMADA ,  Hidekazu HIROSE

IPC: G03G15/00

CPC classification number: G03G5/0609 ,  C07C49/683 ,  C07C255/40 ,  C07C2101/14 ,  C07C2101/16 ,  C07C2601/14 ,  C07C2601/16 ,  G03G5/0564 ,  G03G5/0614 ,  G03G5/0696 ,  G03G5/142 ,  G03G15/75 ,  G03G21/18 ,  G03G21/1814

Abstract: A compound has a structure represented by the following formula (C1): wherein Ra1, Ra2, Ra3, Ra41, Ra42, Ra43, Ra44, Ra45, Ra5, Ra6, Ra7, Ra8, Ra9, Ra10, and Ra11 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an aralkyl group, an aryl group, a cyano group, a halogen atom, or a group obtained by combining two or more of the above groups, and a combination of Ra1 and Ra2, Ra41 and Ra42, Ra42 and Ra43, Ra43 and Ra44, Ra44 and Ra45, Ra5 and Ra6, Ra8 and Ra9, or Ra10 and Ra11 each independently may form a ring.

公开(公告)号：US09671706B2

公开(公告)日：2017-06-06

申请号：US14669115

申请日：2015-03-26

Applicant: Daisuke Nii ,  Eiji Kurimoto ,  Tetsuro Suzuki ,  Tomoharu Asano ,  Toshihiro Ishida

Inventor： Daisuke Nii ,  Eiji Kurimoto ,  Tetsuro Suzuki ,  Tomoharu Asano ,  Toshihiro Ishida

IPC: G03G5/14

CPC classification number: G03G5/144 ,  G03G5/142

Abstract: An electrophotographic photoconductor including a support, an undercoat layer overlying the support, and a photosensitive layer overlying the undercoat layer is provided. The undercoat layer includes zinc oxide particles and a binder resin. The undercoat layer has a voltage (V)-current (I) characteristics such that, when S1 is a value obtained by integrating current (I [A]) in terms of voltage (V [V]) from 0 to a distribution voltage VUL [V] distributed to the undercoat layer, and S2 is a value obtained by integrating a line connecting two points at a voltage (V [V]) of 0 and the distribution voltage VUL [V] in terms of voltage (V [V]) from 0 to the distribution voltage VUL [V], S1 is within a range of from 1.0×10−4 to 1.0×10−2 and a ratio (S1/S2) of S1 to S2 is 0.50 or less.

公开(公告)号：US20160252834A1

公开(公告)日：2016-09-01

申请号：US15053914

申请日：2016-02-25

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kaname Watariguchi ,  Masato Tanaka ,  Masataka Kawahara ,  Jumpei Kuno

IPC: G03G15/00

CPC classification number: G03G5/0696 ,  G03G5/047 ,  G03G5/142

Abstract: An electrophotographic photoconductor comprises a support, an undercoat layer, a charge generation layer, and a hole transport layer in this order. The undercoat layer comprises an electron transport substance, and the charge generation layer comprises a gallium phthalocyanine crystal and an amide compound represented by formula (N1): where R1 represents a methyl group, a propyl group, or a vinyl group.

Abstract translation: 电子照相感光体依次包括载体，底涂层，电荷产生层和空穴传输层。 底涂层包含电子传输物质，电荷产生层包含镓酞菁晶体和由式（N1）表示的酰胺化合物：其中R1表示甲基，丙基或乙烯基。

公开(公告)号：US09383663B2

公开(公告)日：2016-07-05

申请号：US14091139

申请日：2013-11-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yota Ito ,  Michiyo Sekiya ,  Kunihiko Sekido ,  Atsushi Okuda ,  Nobuhiro Nakamura ,  Kazunori Noguchi ,  Daisuke Tanaka ,  Kazumichi Sugiyama ,  Yuka Ishiduka

IPC: G03G5/14 ,  G03G5/047 ,  G03G5/06

CPC classification number: G03G5/047 ,  G03G5/0609 ,  G03G5/0612 ,  G03G5/065 ,  G03G5/0651 ,  G03G5/0657 ,  G03G5/142 ,  G03G5/144

Abstract: An electrophotographic photosensitive member includes a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer. The undercoat layer is an electron transporting layer and contains a metal salt of organic acid having at least one metal element selected from Fe, Co, Ni, Cu, and Zn.

Abstract translation: 电子照相感光构件包括载体，形成在载体上的底涂层和形成在底涂层上的感光层。 底涂层是电子传输层，并且含有选自Fe，Co，Ni，Cu和Zn中的至少一种金属元素的有机酸的金属盐。

公开(公告)号：US09372418B2

公开(公告)日：2016-06-21

申请号：US14418861

申请日：2013-08-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazuhisa Shida ,  Atsushi Fujii ,  Haruyuki Tsuji ,  Nobuhiro Nakamura ,  Hideaki Matsuoka ,  Hiroyuki Tomono

IPC: G03G15/04 ,  G03G5/087 ,  G03G5/00 ,  G03G5/14

CPC classification number: G03G5/087 ,  G03G5/00 ,  G03G5/142 ,  G03G5/144

Abstract: An electrophotographic photosensitive member in which a leak hardly occurs, and a process cartridge and electrophotographic apparatus having the same are provided. The conductive layer in the electrophotographic photosensitive member includes a binder material, a first metal oxide particle, and a second metal oxide particle. The first metal oxide particle is a titanium oxide particle coated with tin oxide doped with phosphorus, tungsten, niobium, tantalum, or fluorine, and the second metal oxide particle is an uncoated titanium oxide particle. The contents of the first and second metal oxide particles in the conductive layer is 20 to 50 vol. % and 1.0 to 15 vol. %, respectively based on the total volume of the conductive layer. The content of the second metal oxide particle in the conductive layer is 5.0 to 30% by volume based on the content of the first metal oxide particle in the conductive layer.

Abstract translation: 其中几乎不发生泄漏的电子照相感光构件，并且提供具有该电子照相感光构件的处理盒和电子照相设备。 电子照相感光构件中的导电层包括粘合剂材料，第一金属氧化物颗粒和第二金属氧化物颗粒。 第一金属氧化物颗粒是涂覆有掺杂有磷，钨，铌，钽或氟的氧化锡的氧化钛颗粒，第二金属氧化物颗粒是未涂覆的氧化钛颗粒。 导电层中的第一和第二金属氧化物颗粒的含量为20〜50体积％。 ％和1.0至15体积％ ％，分别基于导电层的总体积。 导电层中的第二金属氧化物粒子的含量相对于导电层中的第一金属氧化物粒子的含量为5.0〜30体积％。