公开(公告)号：US20170285498A1

公开(公告)日：2017-10-05

申请号：US15622843

申请日：2017-06-14

Applicant: MITSUBISHI CHEMICAL CORPORATION

Inventor： Atsushi YOSHIZAWA ,  Wataru MIYASHITA ,  Mitsuo WADA ,  Akiteru FUJII ,  Takayuki SHOUDA

IPC: G03G5/06 ,  G03G5/047 ,  G03G5/05 ,  G03G5/14 ,  G03G15/00 ,  G03G5/10

CPC classification number: G03G5/0614 ,  G03G5/047 ,  G03G5/0542 ,  G03G5/056 ,  G03G5/0564 ,  G03G5/0603 ,  G03G5/0605 ,  G03G5/0607 ,  G03G5/0609 ,  G03G5/0616 ,  G03G5/0629 ,  G03G5/0637 ,  G03G5/0651 ,  G03G5/0657 ,  G03G5/0668 ,  G03G5/0672 ,  G03G5/0696 ,  G03G5/102 ,  G03G5/142 ,  G03G15/75 ,  G03G2215/00957

Abstract: The present invention relates to an electrophotographic photoreceptor comprising: a conductive support; and a photosensitive layer on the conductive support, wherein the photosensitive layer contains a charge transport substance, a binder resin, and a compound which has a molecular weight of equal to or less than 350, and is represented by General Formula (1).

公开(公告)号：US20190033734A1

公开(公告)日：2019-01-31

申请号：US16143526

申请日：2018-09-27

Applicant: Mitsubishi Chemical Corporation

Inventor： Atsushi YOSHIZAWA

IPC: G03G5/05 ,  C08F290/06 ,  G03G15/00

Abstract: The invention relates to an electrophotographic photoreceptor which is excellent in abrasion resistance and electrical properties by using a fluororesin and a polymer containing a structure represented by a specific formula, and has a long life span, an electrophotographic photoreceptor cartridge and an image forming apparatus including the electrophotographic photoreceptor, and a dispersant which is excellent in dispersibility of a fluororesin particle, and the electrical properties, and the compatibility with a binder resin.

公开(公告)号：US20160124327A1

公开(公告)日：2016-05-05

申请号：US14992603

申请日：2016-01-11

Applicant: Mitsubishi Chemical Corporation

Inventor： Akiteru FUJII ,  Rui ZHAO ,  Yuka NAGAO ,  Atsushi YOSHIZAWA ,  Yuuta KUMANO

IPC: G03G5/047 ,  G03G5/06

CPC classification number: G03G5/047 ,  C08G63/193 ,  G03G5/056 ,  G03G5/0612 ,  G03G5/0696

Abstract: An electrophotographic photoreceptor comprises a conductive support and, at least a photosensitive layer on the conductive support, wherein the photosensitive layer includes a polyarylate resin and the polyarylate resin has a repeating structure represented by formula (1), and the amount of bisphenol residues represented by formula (3) after the polyarylate resin is hydrolyzed, is 0.2% to 1%, in terms of intensity ratio, based on the total amount of bisphenol residues represented by formula (2) and formula (3) after the polyarylate resin is hydrolyzed, the bisphenol residues being detected with a gas chromatograph employing a hydrogen flame ionization detector (FID).

Abstract translation: 电子照相感光体包括导电性支持体和至少在导电性载体上的感光层，其中感光层包含多芳基化合物树脂，多芳基化合物树脂具有由式（1）表示的重复结构，以及由 在多芳基化合物树脂水解后，式（3）在聚芳酯树脂水解后的强度比为0.2％至1％，基于式（2）和式（3）表示的双酚残基的总量， 用使用氢火焰离子化检测器（FID）的气相色谱仪检测双酚残基。

公开(公告)号：US20190219938A1

公开(公告)日：2019-07-18

申请号：US16359327

申请日：2019-03-20

Applicant: Mitsubishi Chemical Corporation

Inventor： Atsushi YOSHIZAWA

IPC: G03G5/05 ,  C08G63/64 ,  C08G63/185 ,  C08G63/183

CPC classification number: G03G5/056 ,  C08G63/16 ,  C08G63/183 ,  C08G63/185 ,  C08G63/60 ,  C08G63/64 ,  G03G5/05

Abstract: The present invention aims to provide an electrophotographic photoreceptor which is excellent in abrasion resistance against practical load and excellent in initial electrical properties, preferably further excellent in adhesion between layers by containing a polyester resin excellent in abrasion resistance, which is an electrophotographic photoreceptor containing a photosensitive layer and a conductive support, the electrophotographic photoreceptor containing a polyester resin having a specific structure α with a number average molecular weight of 15,000 or less and containing a divalent phenol residue and a divalent carboxylic acid residue.

公开(公告)号：US20200233322A1

公开(公告)日：2020-07-23

申请号：US16839151

申请日：2020-04-03

Applicant: Mitsubishi Chemical Corporation

Inventor： Takahiro CHODA ,  Atsushi YOSHIZAWA

IPC: G03G5/047 ,  G03G5/05 ,  G03G5/06 ,  G03G15/00

Abstract: The present invention relates to an electrophotographic photoreceptor including a conductive support and a photosensitive layer on the conductive support, and the photosensitive layer contains a polymer A containing a repeating structural unit represented by a specific formula, and a polymer B containing a repeating structural unit represented by a specific formula. In addition, the present invention relates to an electrophotographic photoreceptor cartridge and an image forming apparatus including the electrophotographic photoreceptor.

公开(公告)号：US20180011412A1

公开(公告)日：2018-01-11

申请号：US15713126

申请日：2017-09-22

Applicant: Mitsubishi Chemical Corporation

Inventor： Atsushi YOSHIZAWA ,  Mitsuo Wada

IPC: G03G5/05 ,  G03G5/147

Abstract: The present invention relates to an electrophotographic photoreceptor comprising: a conductive support; and a photosensitive layer disposed on the conductive support, wherein the photosensitive layer includes a polyester resin containing a dihydric phenol residue and a dicarboxylic acid residue, and the dihydric phenol residue includes at least one dihydric phenol residue selected from the group of the specific dihydric phenol residues, and the other specific dihydric phenol residue.