公开(公告)号：US09684253B2

公开(公告)日：2017-06-20

申请号：US14837691

申请日：2015-08-27

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hideki Okada ,  Kensuke Kojima ,  Fumio Sugai ,  Hiroki Tsurumi ,  Yohei Yamamoto ,  Eiichi Miyamoto

IPC: G03G5/04 ,  C07C211/54 ,  C07C217/84 ,  C07C217/80 ,  G03G5/06

CPC classification number: G03G5/04 ,  C07C211/54 ,  C07C217/80 ,  C07C217/84 ,  G03G5/0614 ,  G03G5/0672

Abstract: A triphenylamine derivative is represented by general formula (1). In general formula (1), R1 to R7 each represent, independently of one another, a chemical group selected from the group consisting of a halogen atom, an optionally substituted alkyl group having a carbon number of at least 1 and no greater than 6, an optionally substituted alkoxy group having a carbon number of at least 1 and no greater than 6, and an optionally substituted aryl group having a carbon number of at least 6 and no greater than 12. Also, k, l, m, n, o, and p each represent, independently of one another, an integer of at least 0 and no greater than 4. When any of k, l, m, n, o, or p represents an integer greater than 1, chemical groups R3, R4, R5, R6, or R7 bonded to the same aromatic ring may be the same or different.

公开(公告)号：US08980507B2

公开(公告)日：2015-03-17

申请号：US14091086

申请日：2013-11-26

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tomofumi Shimizu ,  Eiichi Miyamoto ,  Hiroki Tsurumi

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

CPC classification number: G03G5/047 ,  G03G5/0609 ,  G03G5/0614 ,  G03G5/0672 ,  G03G5/0674 ,  G03G5/0679

Abstract: A positively chargeable monolayer electrophotographic photosensitive member includes a photosensitive layer provided on a conductive substrate and having a monolayer structure containing at least a charge generating material, a hole transport material, an electron transport material, and a binder resin. The photosensitive layer contains a hole transport material containing a triarylamine derivative represented by a formula (1) below and an electron transport material containing a compound selected from the group consisting of quinone compounds having a predetermined structure.

Abstract translation: 可带正电的单层电子照相感光构件包括设置在导电基底上并具有至少含有电荷产生材料，空穴传输材料，电子传输材料和粘合剂树脂的单层结构的感光层。 感光层含有含有下述通式（1）表示的三芳基胺衍生物的空穴传输材料和含有选自具有预定结构的醌化合物的化合物的电子传输材料。

公开(公告)号：US10884346B2

公开(公告)日：2021-01-05

申请号：US15999788

申请日：2017-01-30

Applicant: KYOCERA Document Solutions Inc.

Inventor： Eiichi Miyamoto ,  Hiroki Tsurumi

IPC: G03G5/00 ,  G03G5/047 ,  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. The photosensitive layer (3) contains at least a charge generating material, a hole transport material, an electron transport material, and a binder resin. The charge generating material includes a metal-free phthalocyanine. The hole transport material includes a triphenylamine derivative represented by general formula (1) shown below. The electron transport material includes a quinone derivative represented by general formula (2) shown below. In general formula (1), R1, R2, R3, m1, m2, k, p, and q are the same as those described in the description. In general formula (2), R4, R5, and R6 are the same as those described in the description.

公开(公告)号：US09690217B2

公开(公告)日：2017-06-27

申请号：US14837298

申请日：2015-08-27

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hideki Okada ,  Fumio Sugai ,  Kensuke Kojima ,  Hiroki Tsurumi ,  Yohei Yamamoto ,  Eiichi Miyamoto

IPC: G03G5/06 ,  G03G5/04 ,  C07C211/54 ,  C07C217/80

CPC classification number: G03G5/0614 ,  C07C211/54 ,  C07C217/80 ,  G03G5/04 ,  G03G5/0672

Abstract: A triarylamine derivative is represented by general formula (I). In general formula (I), R1 and R2 each represent, independently of one another, a chemical group selected from the group consisting of a halogen atom, an optionally substituted alkyl group having a carbon number of 1-6, an optionally substituted alkoxy group having a carbon number of 1-6, and an optionally substituted aryl group having a carbon number of 6-12. In general formula (I), k and l each represent an integer of at least 0 and no greater than 4. When k and l represent integers greater than 1, chemical groups R1 bonded to the same aromatic ring and chemical groups R2 bonded to the same aromatic ring may be the same or different to one another. In general formula (I), m and n each represent a different integer of at least 1 and no greater than 3.

公开(公告)号：US09541849B2

公开(公告)日：2017-01-10

申请号：US14191120

申请日：2014-02-26

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Tomofumi Shimizu ,  Hiroki Tsurumi ,  Yohei Yamamoto ,  Eiichi Miyamoto

IPC: G03G5/06

CPC classification number: G03G5/0609 ,  G03G5/0614 ,  G03G5/0616 ,  G03G5/0618 ,  G03G5/0651 ,  G03G5/0672

Abstract: A positively chargeable single-layer electrophotographic photosensitive member includes a single-layer photosensitive layer. The single-layer photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The electron transport material contains two or more compounds selected from the group consisting of compounds represented by the chemical formulas (1) to (4) below.

Abstract translation: 正电荷单层电子照相感光构件包括单层感光层。 单层感光层包含电荷产生材料，空穴传输材料，电子传输材料和粘合剂树脂。 电子传输材料含有选自由下列化学式（1）至（4）表示的化合物的两种或更多种化合物。

公开(公告)号：US10761440B2

公开(公告)日：2020-09-01

申请号：US16345495

申请日：2017-08-24

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hiroki Tsurumi ,  Eiichi Miyamoto ,  Jun Azuma

IPC: G03G5/06 ,  G03G5/05

Abstract: A photosensitive member (1) includes a conductive substrate (2) and a photosensitive layer (3). The photosensitive layer is a single-layer photosensitive layer (3c). The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The hole transport material includes a triphenylamine derivative represented by general formula (HT). The electron transport material includes a compound represented by general formula (ET1), (ET2), (ET3), (ET4), or (ET5). The binder resin includes a polyarylate resin represented by general formula (1)

公开(公告)号：US10078276B2

公开(公告)日：2018-09-18

申请号：US15160601

申请日：2016-05-20

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hiroki Tsurumi ,  Eiichi Miyamoto

IPC: G03G5/06 ,  G03G21/18 ,  G03G15/02

CPC classification number: G03G5/0614 ,  G03G5/0603 ,  G03G5/0605 ,  G03G5/0607 ,  G03G5/0609 ,  G03G5/0618 ,  G03G5/0672 ,  G03G15/02 ,  G03G21/18

Abstract: A positively chargeable single-layer electrophotographic photosensitive member is used as an image bearing member in an image forming apparatus including a charging section configured to be in contact with the image bearing member to apply a voltage thereto. The positively chargeable single-layer electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer contains at least a charge generating material, a hole transport material, an electron transport material, and a binder resin. The hole transport material contains a triarylamine derivative represented by the following general formula (I). In general formula (I), R1, R2, m and n have the same meaning as R1, R2, m, and n defined in the description.

公开(公告)号：US09785062B2

公开(公告)日：2017-10-10

申请号：US15171467

申请日：2016-06-02

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hiroki Tsurumi ,  Eiichi Miyamoto

IPC: G03G5/04 ,  G03G5/06 ,  G03G5/05

CPC classification number: G03G5/0614 ,  G03G5/0564 ,  G03G5/0575 ,  G03G5/0578 ,  G03G5/0609 ,  G03G5/0612 ,  G03G5/0672

Abstract: In a positively chargeable single-layer electrophotographic photosensitive member, a photosensitive layer contains at least a hole transport material, and particles of a first resin. A compound represented by general formula (1) is contained as the hole transport material. In the general formula (1), R1 represents an alkyl group having a carbon number of at least 2 and no greater than 4. R2, R3, R4, R5, and R6 each represent, independently of one another, a hydrogen atom or an alkyl group having a carbon number of at least 1 and no greater than 4. Ar1 and Ar2 each represent, independently of each other, a hydrogen atom or an optionally substituted aryl group having a carbon number of at least 6 and no greater than 20. At least one of Ar1 and Ar2 represents an optionally substituted aryl group having a carbon number of at least 6 and no greater than 20.