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:
Aug. 18, 2020
Filed:
May. 28, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroyuki Watanabe, Suntou-gun, JP;
Tsutomu Nishida, Mishima, JP;
Yuka Ishiduka, Suntou-gun, JP;
Atsushi Okuda, Yokohama, JP;
Hideharu Shimozawa, Numazu, JP;
Nobuhiro Nakamura, Numazu, JP;
Daisuke Miura, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
To provide an electrophotographic photosensitive member which does not cause film exfoliation in long-term use. An electrophotographic photosensitive member, having: a support; a layered photosensitive layer; and a protective layer in this order, wherein the protective layer is a single layer, the protective layer includes: at least two specific structures, the two specific structures are included in the protective layer at a mass ratio of 20% or more and 240% or less, and a peak area based on in-plane deformation vibration of terminal olefin (CH═) of the protective layer and a peak area based on stretching vibration of C═O of acryloyloxy groups, the peak areas being determined by total reflection Fourier transform infrared spectroscopy under conditions where an internal reflection element is Ge, and an incidence angle is 45°, have a fixed relationship.