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：US10809638B2

公开(公告)日：2020-10-20

申请号：US16521427

申请日：2019-07-24

Applicant: KYOCERA Document Solutions Inc.

Inventor： Eiichi Miyamoto ,  Yohei Yamamoto

IPC: G03G5/05 ,  G03G5/06

Abstract: An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer is a single-layer photosensitive layer and contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. A hole mobility μh is at least 1.00×10−7 cm2/V/second and an electron mobility μe is at least 4.00×10−8 cm2/V/second in the photosensitive layer as measured under conditions of a temperature of 23° C. and an electric field intensity of 1.50×105 V/cm. A ratio (μh/μe) of the hole mobility μh to the electron mobility μe is at least 1.0 and no greater than 50.0.

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.