公开(公告)号：US10730819B2

公开(公告)日：2020-08-04

申请号：US16575125

申请日：2019-09-18

Applicant: KYOCERA Document Solutions Inc.

Inventor： Jun Azuma

IPC: C07C51/60 ,  B01J31/02

Abstract: A naphthalenedicarboxylic acid dichloride production method includes causing a reaction between naphthalenedicarboxylic acid and a chlorinating agent at a reaction temperature of 20° C. or higher and 75° C. or lower in presence of a solvent including tetrahydrofuran. The causing a reaction in the naphthalenedicarboxylic acid dichloride production method is preferably performed in presence of N,N-disubstituted formamide.

公开(公告)号：US09575423B2

公开(公告)日：2017-02-21

申请号：US14641193

申请日：2015-03-06

Applicant: KYOCERA Document Solutions Inc.

Inventor： Jun Azuma ,  Kensuke Okawa ,  Akihiko Ogata ,  Takahiro Oki

IPC: G03G5/047 ,  G03G5/06 ,  G03G5/05 ,  G03G5/04 ,  G03G5/043

CPC classification number: G03G5/047 ,  G03G5/04 ,  G03G5/043 ,  G03G5/0507 ,  G03G5/0564 ,  G03G5/0605 ,  G03G5/0609 ,  G03G5/0612 ,  G03G5/0614 ,  G03G5/0668 ,  G03G5/0672 ,  G03G5/0696

Abstract: An electrophotographic photosensitive member has a photosensitive layer. The photosensitive layer is a multi-layer photosensitive layer having a charge transport layer being an outermost layer or a single-layer photosensitive layer. The amount of silica particles contained in the photosensitive layer is at least 0.5 parts by mass and no greater than 15 parts by mass relative to 100 parts by mass of a binder resin contained in the photosensitive layer.

Abstract translation: 电子照相感光构件具有感光层。 感光层是具有作为最外层或单层感光层的电荷输送层的多层感光层。 包含在感光层中的二氧化硅颗粒的量相对于感光层中包含的粘合剂树脂100质量份为至少0.5质量份且不大于15质量份。

公开(公告)号：US10795273B2

公开(公告)日：2020-10-06

申请号：US16443624

申请日：2019-06-17

Applicant: KYOCERA Document Solutions Inc.

Inventor： Jun Azuma ,  Kensuke Kojima

IPC: G03G5/06 ,  C07C211/54 ,  G03G5/05

Abstract: A bis-butadiene derivative is represented by general formula (1) shown below. In general formula (1), Ra, Rb, and Rc each represent, independently of one another, an alkyl group having a carbon number of at least 1 and no greater than 8 or an alkoxy group having a carbon number of at least 1 and no greater than 8. l and m each represent, independently of one another, an integer of at least 0 and no greater than 5. n represents an integer of at least 0 and no greater than 4. Chemical groups Ra may be the same as or different from each other. Chemical groups Rb may be the same as or different from each other. Chemical groups Rc may be the same as or different from each other.

公开(公告)号：US10732526B2

公开(公告)日：2020-08-04

申请号：US16471154

申请日：2017-11-30

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tomofumi Shimizu ,  Keiji Maruo ,  Jun Azuma

IPC: G03G5/05 ,  C07D231/18 ,  C07D471/04 ,  C08L67/03 ,  C09B47/30 ,  G03G5/06

Abstract: An electrophotographic photosensitive member (1) includes a conductive substrate (2) and a photosensitive layer (3). The photosensitive layer (3) is a single-layer photosensitive layer (3c) and contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The binder resin includes a polyarylate resin represented by general formula (1). In general formula (1), Q1, Q2, Q3, and Q4 each represent a methyl group or a hydrogen atom. r, s, t, and u each represent a number greater than or equal to 15 and less than or equal to 35. X and Y each represent a divalent group represented by chemical formula (2A), chemical formula (2B), chemical formula (2C), or chemical formula (2D), and X and Y are different from each other

公开(公告)号：US10379451B2

公开(公告)日：2019-08-13

申请号：US15904527

申请日：2018-02-26

Applicant: KYOCERA Document Solutions Inc.

Inventor： Jun Azuma ,  Kensuke Okawa ,  Akihiko Ogata ,  Kenji Kitaguchi ,  Tomofumi Shimizu

IPC: G03G5/05 ,  G03G5/047 ,  G03G5/06 ,  C08G63/672 ,  C08G63/91 ,  C08G63/682

Abstract: A polyarylate resin includes at least one type of repeating unit represented by a general formula (1), at least one type of repeating unit represented by a general formula (2), and a terminal group represented by a general formula (3). R1, R2, R3, and R4 each represent, independently of one another, a hydrogen atom or a methyl group. R5 and R6 each represent, independently of each other, a hydrogen atom or a C1-4 alkyl group. R5 and R6 may bond together to represent a C5-7 cycloalkylidene group. X1 represents a divalent group represented by a chemical formula (2A), (2B), (2C), or (2D) with the proviso that when only one type of repeating unit represented by the general formula (2) is included, X1 does not represent a divalent group represented by the chemical formula (2D). Rf represents a chain aliphatic group having at least one fluoro group.

公开(公告)号：US10273331B2

公开(公告)日：2019-04-30

申请号：US15824745

申请日：2017-11-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Jun Azuma ,  Kenji Kitaguchi ,  Kensuke Okawa ,  Seiki Hasunuma ,  Tomofumi Shimizu

IPC: G03G5/05 ,  G03G5/06 ,  C08G63/19 ,  C08G63/181 ,  C08L67/02

Abstract: A polyarylate resin is represented by general formula (1) shown below. In general formula (1), R1 and R2 each represent, independently of one another, a hydrogen atom or a methyl group. r and s each represent an integer of at least 0 and no greater than 49. t and u each represent an integer of at least 1 and no greater than 50. r+s+t+u=100. r+t=s+u. X and Y each represent, independently of one another, a divalent group represented by chemical formula (1-1), chemical formula (1-2), chemical formula (1-3), or chemical formula (1-4). X and Y are different from one another.

公开(公告)号：US10031431B2

公开(公告)日：2018-07-24

申请号：US15492914

申请日：2017-04-20

Applicant: KYOCERA Document Solutions Inc.

Inventor： Jun Azuma ,  Takahiro Oki ,  Kensuke Okawa ,  Akihiko Ogata

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

Abstract: An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer contains at least a charge generating material, a charge transport material, and a binder resin. The binder resin includes a polyarylate resin. The polyarylate resin is represented by general formula (1) shown below. In general formula (1), X represents a divalent group represented by chemical formula (1-1), (1-2), (1-3), or (1-4) shown below.

公开(公告)号：US11067909B2

公开(公告)日：2021-07-20

申请号：US16632197

申请日：2018-07-17

Applicant: KYOCERA Document Solutions Inc.

Inventor： Jun Azuma ,  Kensuke Kojima ,  Tomofumi Shimizu ,  Hideki Okada

IPC: G03G5/06 ,  G03G5/05 ,  C07C209/06 ,  C07C211/54 ,  G03G5/047

Abstract: A compound is represented by general formula (1). In general formula (1), R1 and R2 each represent, independently of one another, a hydrogen atom, a methyl group, or an ethyl group, and a sum of the number of carbon atoms of the chemical group represented by R1 and the number of carbon atoms of the chemical group represented by R2 is 2. R3 and R4 each represent, independently of one another, a hydrogen atom, a methyl group, or an ethyl group, and a sum of the number of carbon atoms of the chemical group represented by R3 and the number of carbon atoms of the chemical group represented by R1 is 2. A photosensitive layer of an electrophotographic photosensitive member contains at least a charge generating material, a hole transport material, and a binder resin. The hole transport material includes a compound represented by general formula (1)

公开(公告)号：US10649351B2

公开(公告)日：2020-05-12

申请号：US16472178

申请日：2017-11-30

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tomofumi Shimizu ,  Jun Azuma ,  Keiji Maruo

IPC: G03G5/00 ,  G03G5/043 ,  G03G5/05 ,  G03G5/06

Abstract: An electrophotographic photosensitive member (1) includes a conductive substrate (2) and a photosensitive layer (3). The photosensitive layer (3) is a single-layer photosensitive layer (3c) and contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The binder resin includes a polyarylate resin represented by general formula (1). In general formula (1), Q1, Q2, Q3, and Q4 each represent a methyl group or a hydrogen atom. r, s, t, and u each represent a number greater than or equal to 15 and less than or equal to 35. X and Y each represent a divalent group represented by chemical formula (2A), chemical formula (2B), chemical formula (2C), or chemical formula (2D)

公开(公告)号：US10509309B2

公开(公告)日：2019-12-17

申请号：US15899400

申请日：2018-02-20

Applicant: KYOCERA Document Solutions Inc.

Inventor： Jun Azuma

IPC: C08G81/00 ,  G03C1/795 ,  C08L67/02 ,  G03C1/06 ,  C08G65/38 ,  C07C211/01 ,  C08G63/40 ,  G03G5/05 ,  G03G5/06 ,  C08G63/189 ,  C08G63/195 ,  C08L101/00 ,  C07C211/54

Abstract: A polyarylate resin is represented by general formula (1) shown below. In general formula (1), R1 represents a hydrogen atom or methyl group. R2 and R3 each represent a hydrogen atom or an alkyl group having a carbon number of at least 1 and no greater than 4. R2 and R3 are not the same as one another. When R1 represents a hydrogen atom, R2 and R3 are not bonded to one another. When R1 represents a methyl group, R2 and R3 are optionally bonded to one another to form a ring. r and s each represent a number greater than or equal to 0 and less than or equal to 49. t and u each represent a number greater than or equal to 1 and less than or equal to 50. r+s+t+u=100. r+t=s+u.