Invention Grant
- Patent Title: Electrophotographic photosensitive member, process cartridge, and image forming apparatus
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Application No.: US16472178Application Date: 2017-11-30
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Publication No.: US10649351B2Publication Date: 2020-05-12
- Inventor: Tomofumi Shimizu , Jun Azuma , Keiji Maruo
- Applicant: KYOCERA Document Solutions Inc.
- Applicant Address: JP Osaka
- Assignee: KYOCERA Document Solutions Inc.
- Current Assignee: KYOCERA Document Solutions Inc.
- Current Assignee Address: JP Osaka
- Agency: Studebaker & Brackett PC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@21d8aa78
- International Application: PCT/JP2017/043014 WO 20171130
- International Announcement: WO2018/123424 WO 20180705
- Main IPC: G03G5/00
- 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)
Public/Granted literature
- US20190354027A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS Public/Granted day:2019-11-21
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