The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 2020
Filed:
Mar. 17, 2017
Kyocera Document Solutions Inc., Osaka, JP;
Tomofumi Shimizu, Osaka, JP;
Hideki Okada, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
An electrophotographic photosensitive member () includes a conductive substrate () and a photosensitive layer (). The photosensitive layer () is a single-layer photosensitive layer containing at least a charge generating material, an electron transport material, a hole transport material, and a binder resin. The electron transport material includes a naphthoquinone derivative represented by general formula (1). An amount of triboelectric charge of calcium carbonate as measured by charging the calcium carbonate through friction with the photosensitive layer () is at least +7 μC/g. In general formula (1), Rand Rare respectively the same as Rand Rdescribed in the description.