公开(公告)号：US11892780B1

公开(公告)日：2024-02-06

申请号：US18155032

申请日：2023-01-16

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Yoshiteru Yamada ,  Tomoya Sasaki ,  Ryosuke Fujii ,  Hiroko Kobayashi ,  Yuto Okazaki

IPC: G03G5/05 ,  G03G15/00 ,  G03G21/00 ,  G03G15/02 ,  G03G15/08 ,  G03G5/06

CPC classification number: G03G15/0233 ,  G03G5/0567 ,  G03G5/0605 ,  G03G5/061473 ,  G03G15/0806 ,  G03G15/752 ,  G03G21/0011 ,  G03G2215/00518

Abstract: An image forming apparatus includes an electrophotographic photoreceptor that has a photosensitive layer constituting a surface of the electrophotographic photoreceptor, a charging device that charges the surface of the electrophotographic photoreceptor, an electrostatic charge image forming device that forms an electrostatic charge image on the charged surface of the electrophotographic photoreceptor, a developing device that accommodates a developer containing a toner which contains toner particles and an external additive, and develops the electrostatic charge image formed on the surface of the electrophotographic photoreceptor by the developer as a toner image, a transfer device that transfers the toner image formed on the surface of the electrophotographic photoreceptor to a surface of a recording medium, and a cleaning device that includes a cleaning blade coming into contact with the surface of the electrophotographic photoreceptor and cleaning at least residual toner particles on the surface of the electrophotographic photoreceptor.

公开(公告)号：US10078277B2

公开(公告)日：2018-09-18

申请号：US15827830

申请日：2017-11-30

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hideki Okada

IPC: G03G5/06 ,  G03G5/043 ,  G03G5/047 ,  G03G5/05 ,  C07C211/58 ,  C07C217/84

CPC classification number: G03G5/065 ,  C07C211/58 ,  C07C217/84 ,  G03G5/043 ,  G03G5/047 ,  G03G5/0564 ,  G03G5/0567 ,  G03G5/0592 ,  G03G5/0609 ,  G03G5/0614 ,  G03G5/0618 ,  G03G5/0633 ,  G03G5/0638 ,  G03G5/0646 ,  G03G5/0696

Abstract: An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer containing a charge generating material, a hole transport material, a quinone derivative, and a binder resin. The quinone derivative is represented by general formula (1) or (2), where R1, R2, R3, R4, and R5 each represent, independently of one another, a hydrogen atom, an alkyl group having a carbon number of at least 1 and no greater than 12, an aryl group that has a carbon number of at least 6 and no greater than 14 and that may have an alkyl group having a carbon number of at least 1 and no greater than 6, an aralkyl group having a carbon number of at least 7 and no greater than 12, or a cycloalkyl group having a carbon number of at least 3 and no greater than 10. Z represents an oxygen atom or a sulfur atom.

公开(公告)号：US09599917B2

公开(公告)日：2017-03-21

申请号：US14971156

申请日：2015-12-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： Atsushi Okuda ,  Nobuhiro Nakamura ,  Kazunori Noguchi ,  Akihiro Maruyama ,  Atsushi Fujii ,  Yuka Ishiduka ,  Yuki Yamamoto ,  Kazuko Sakuma ,  Tatsuya Ikezue

IPC: G03G5/14 ,  G03G5/05

CPC classification number: G03G5/144 ,  G03G5/0567 ,  G03G5/142

Abstract: An electrophotographic photosensitive member that abuts with a charging member and/or a developer carrying member with an abutting member interposed therebetween, wherein the electrophotographic photosensitive member has a first portion and a second portion abutting with the abutting member along the longitudinal direction thereof, the electrophotographic photosensitive member has a support, a charge generation layer containing a charge generating material and a polyacetal resin, and a surface layer in this order, the electrophotographic photosensitive member has, in the first portion, an undercoat layer containing a polymerized product of a composition including an electron transporting material and a cross-linking agent, the layer being adjacent to a surface of the charge generation layer, facing the support, and the electrophotographic photosensitive member has, in the second portion, an intermediate layer containing a metal oxide particle and a phenol resin, the layer being between and adjacent to the support and the charge generation layer.

公开(公告)号：US20160187794A1

公开(公告)日：2016-06-30

申请号：US14971156

申请日：2015-12-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： Atsushi Okuda ,  Nobuhiro Nakamura ,  Kazunori Noguchi ,  Akihiro Maruyama ,  Atsushi Fujii ,  Yuka Ishiduka ,  Yuki Yamamoto ,  Kazuko Sakuma ,  Tatsuya Ikezue

IPC: G03G15/00

CPC classification number: G03G5/144 ,  G03G5/0567 ,  G03G5/142

Abstract: An electrophotographic photosensitive member that abuts with a charging member and/or a developer carrying member with an abutting member interposed therebetween, wherein the electrophotographic photosensitive member has a first portion and a second portion abutting with the abutting member along the longitudinal direction thereof, the electrophotographic photosensitive member has a support, a charge generation layer containing a charge generating material and a polyacetal resin, and a surface layer in this order, the electrophotographic photosensitive member has, in the first portion, an undercoat layer containing a polymerized product of a composition including an electron transporting material and a cross-linking agent, the layer being adjacent to a surface of the charge generation layer, facing the support, and the electrophotographic photosensitive member has, in the second portion, an intermediate layer containing a metal oxide particle and a phenol resin, the layer being between and adjacent to the support and the charge generation layer.

Abstract translation: 一种电子照相感光构件，其与充电构件和/或显影剂承载构件抵接，其间具有邻接构件，其中电子照相感光构件具有第一部分和第二部分，其沿着其纵向邻接抵接构件，电子照相 感光构件具有支撑体，含有电荷产生材料和聚缩醛树脂的电荷产生层，并且依次具有表面层，电子照相感光构件在第一部分中具有底涂层，该底涂层含有包含 电子传输材料和交联剂，所述层与电荷产生层的表面相邻，面对载体，并且电子照相感光构件在第二部分中具有含有金属氧化物颗粒和 酚醛树脂，层之间 并且与载体和电荷产生层相邻。

公开(公告)号：US08790853B2

公开(公告)日：2014-07-29

申请号：US11364228

申请日：2006-03-01

Applicant: Jin Wu ,  John J. Wilbert ,  Marc J. Livecchi ,  Liang-bih Lin

Inventor： Jin Wu ,  John J. Wilbert ,  Marc J. Livecchi ,  Liang-bih Lin

IPC: G03G5/00

CPC classification number: G03G5/0542 ,  G03G5/0546 ,  G03G5/0567

Abstract: The present disclosure is directed to charge generating compositions and methods of making the charge generating compositions. The composition may comprise one or more polymers comprising styrene units and allyl alcohol units, and one or more photoconductive particles. Electrophotographic devices employing the compositions, including methods of making the devices, are also disclosed.

Abstract translation: 本公开涉及电荷产生组合物和制备电荷产生组合物的方法。 组合物可以包含一种或多种包含苯乙烯单元和烯丙醇单元的聚合物，以及一种或多种光电导颗粒。 还公开了使用该组合物的电子照相装置，包括制备该装置的方法。

公开(公告)号：US08679709B2

公开(公告)日：2014-03-25

申请号：US12049718

申请日：2008-03-17

Applicant: Katsumi Nukada ,  Wataru Yamada ,  Masahiro Iwasaki ,  Kazuhiro Koseki

Inventor： Katsumi Nukada ,  Wataru Yamada ,  Masahiro Iwasaki ,  Kazuhiro Koseki

IPC: G03G5/047 ,  G03G5/147

CPC classification number: G03G5/14791 ,  G03G5/0567 ,  G03G5/0575 ,  G03G5/0614 ,  G03G5/0616 ,  G03G5/0668 ,  G03G5/0672 ,  G03G5/076 ,  G03G5/1476 ,  G03G5/14769 ,  G03G2215/00957

Abstract: According to the invention, there is provided an electrophotographic photoreceptor comprising a conductive substrate and a photosensitive layer provided on a surface of the conductive substrate, an outermost layer of the photosensitive layer containing a crosslinked product composed of a guanamine compound and at least one charge transporting material having at least one substituent selected from the group consisting of —OH, —OCH3, —NH2, —SH, and —COOH.

Abstract translation: 根据本发明，提供了一种电子照相感光体，其包括导电基底和设置在导电基底表面上的光敏层，感光层的最外层含有由胍胺化合物组成的交联产物和至少一种电荷输送 具有至少一个选自-OH，-OCH 3，-NH 2，-SH和-COOH的取代基的材料。

公开(公告)号：US08197997B2

公开(公告)日：2012-06-12

申请号：US12281230

申请日：2007-02-27

Applicant: Yoshiki Yanagawa ,  Yoshiaki Kawasaki ,  Tetsuro Suzuki

Inventor： Yoshiki Yanagawa ,  Yoshiaki Kawasaki ,  Tetsuro Suzuki

IPC: G03G17/06

CPC classification number: G03G5/14791 ,  G03G5/0546 ,  G03G5/0567 ,  G03G5/0592 ,  G03G5/14734 ,  G03G5/1476

Abstract: To provide an electrophotographic photoconductor that comprises a support and a cross-linked layer formed over the support, wherein the cross-linked layer comprises at least light curable of radically polymerizable compound, the difference of maximum value of the post-exposure electrical potential and minimum value of the post-exposure electrical potential when writing is conducted under the condition that image static power is 0.53 mW, exposure energy is 4.0 erg/cm2 for the electrophotographic photoconductor is within 30V.

Abstract translation: 为了提供一种电子照相感光体，其包括在载体上形成的载体和交联层，其中交联层至少包含可自由基聚合的化合物的可光固化的，曝光后电位的最大值与最小值之差 在图像静电功率为0.53mW的条件下进行写入时的曝光后电位值，电子照相感光体的曝光能量为4.0erg / cm2，为30V以内。

公开(公告)号：US08105739B2

公开(公告)日：2012-01-31

申请号：US12053996

申请日：2008-03-24

Applicant: Wataru Yamada ,  Katsumi Nukada ,  Yukiko Furushiro

Inventor： Wataru Yamada ,  Katsumi Nukada ,  Yukiko Furushiro

IPC: G03G5/00

CPC classification number: G03G5/0614 ,  G03G5/0542 ,  G03G5/0567 ,  G03G5/0696

Abstract: An electrophotographic photoreceptor includes a conductive support and a photosensitive layer. The photosensitive layer is disposed on the conductive support, and includes a layer that includes, in the same layer, at least a charge generating material and a compound having a triple bond and a hydroxy group.

Abstract translation: 电子照相感光体包括导电性支持体和感光层。 感光层设置在导电支撑体上，并且包括在同一层中至少包含电荷产生材料和具有三键和羟基的化合物的层。

公开(公告)号：US20110300475A1

公开(公告)日：2011-12-08

申请号：US13153123

申请日：2011-06-03

Applicant: Kuboshima Daisuke ,  Shishido Makoto ,  Yamamoto Yohei ,  Shimizu Tomofumi ,  Miyamoto Eiichi

Inventor： Kuboshima Daisuke ,  Shishido Makoto ,  Yamamoto Yohei ,  Shimizu Tomofumi ,  Miyamoto Eiichi

IPC: G03G15/00

CPC classification number: G03G5/056 ,  G03G5/0567 ,  G03G5/0596

Abstract: An electrophotographic photoconductor includes a photosensitive layer on a conductive base, in which 1) the photosensitive layer includes a charge-generating layer including a charge-generating material, and a charge-transport layer including a charge-transport material and a binder resin, the charge-generating layer and the charge-transport layer being stacked, in that order, on the conductive base, and the charge-transport layer having a yield strain of about 5%-25%, or 2) the photosensitive layer includes a charge-generating material, a charge-transport material, and a binder resin in the same layer and has a yield strain of about 5%-25%, corresponding to the yield strain measured using a 10 mm×30 mm rectangular, sample having a thickness of 30 μm with both 10-mm sides held at an initial load of 1 N, a strain rate of 0.5 %/min, and a temperature of 30°C., in which the electrophotographic photoconductor is used as an image-bearing member.

Abstract translation: 电子照相感光体包括导电基底上的感光层，其中1）感光层包括含电荷产生材料的电荷产生层和包含电荷传输材料和粘合剂树脂的电荷传输层， 电荷产生层和电荷传输层按顺序堆叠在导电性基底上，电荷传输层的屈服应变为约5％-25％，或2）感光层包括电荷 - 产生材料，电荷传输材料和粘合剂树脂，并且具有约5％-25％的屈服应变，对应于使用10mm×30mm矩形样品测量的屈服应变，其厚度为 30微米，两个10毫米面的初始载荷保持在1N，应变速率为0.5％/分钟，温度为30℃，其中电子照相感光体用作图像承载部件。

公开(公告)号：US20110200926A1

公开(公告)日：2011-08-18

申请号：US13020355

申请日：2011-02-03

Applicant: Yuuji TANAKA ,  Norio Nagayama ,  Hiromi Sakaguchi ,  Tetsuro Suzuki ,  Kazukiyo Nagai

Inventor： Yuuji TANAKA ,  Norio Nagayama ,  Hiromi Sakaguchi ,  Tetsuro Suzuki ,  Kazukiyo Nagai

IPC: G03G5/04 ,  G03G13/20 ,  G03G15/02

CPC classification number: G03G5/0614 ,  G03G5/0567 ,  G03G5/0592 ,  G03G5/076 ,  G03G5/14708 ,  G03G5/1476 ,  G03G2215/00957

Abstract: An electrophotographic photoconductor including a layer comprising a cross-linked hardened material of a compound A with a compound B. Each of the compounds A and B has at least two alcohol groups, at least one of the compounds A and B has at least two methylol groups, at least one of the compounds A and B has at least three alcohol groups, and at least one of the compounds A and B has a charge transportable group. In other words, the compound A has X methylol groups, X being an integer of 2 or more, the compound B has Y alcohol groups, Y being an integer of 2 or more, at least one of the compounds A and B has a charge transportable group, and the following relations are satisfied: x=2 and y≧3, or x≧3 and y≧2.

Abstract translation: 电子照相感光体包括包含化合物A与化合物B的交联硬化材料的层。化合物A和B中的每一个具有至少两个醇基，化合物A和B中的至少一个具有至少两个羟甲基 化合物A和B中的至少一种具有至少三个醇基，化合物A和B中的至少一个具有电荷可转移基团。 换句话说，化合物A具有X羟甲基，X为2以上的整数，化合物B具有Y个醇基，Y为2以上的整数，化合物A和B中的至少一个具有电荷 可满足以下关系：x = 2，y≥3，x≥3，y≥2。