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:
Mar. 17, 2026
Filed:
Nov. 28, 2022
Kyocera Document Solutions Inc., Osaka, JP;
Yuichi Yoshida, Osaka, JP;
Kiichiro Oji, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer includes a charge generating layer and a charge transport layer. The charge generating layer contains a phthalocyanine pigment and a first resin. A ratio of the mass of the phthalocyanine pigment to the mass of the first resin is greater than 2.0 and less than 3.5. A ratio A/Aof a second absorbance Ato a first absorbance Aof the charge generating layer is at least 0.97 and no greater than 1.10. The first absorbance Ais an absorbance of the charge generating layer with respect to first light with a wavelength of 783 nm. The second absorbance Ais an absorbance of the charge generating layer with respect to second light with a wavelength of 830 nm.