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. 26, 2021
Filed:
Jul. 09, 2019
Kyocera Document Solutions Inc., Osaka, JP;
Toshiki Fujita, Osaka, JP;
Nariaki Tanaka, Osaka, JP;
Masahito Ishino, Osaka, JP;
Kiyotaka Kobayashi, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
In an image forming apparatus, a cleaning member is pressed against a circumferential surface of an image bearing member and collects a toner remaining on the circumferential surface of the image bearing member. The toner has a number average roundness of 0.965 to 0.998. The toner has a Dof 4.0 μm to 7.0 μm. A linear pressure of the cleaning member on the circumferential surface of the image bearing member is 10 N/m to 40 N/m. The image bearing member includes a single-layer photosensitive layer containing a charge generating material and a hole transport material. Ionization potential Ipof the hole transport material and ionization potential Ipof the charge generating material satisfy mathematical formula (1) 'Ip≥5.30 eV', mathematical formula (2) 'Ip≥5.30 eV', and mathematical formula (3) “0.09 eV≤|Ip−Ip|≤0.30 eV”.