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:
Sep. 17, 2024
Filed:
Feb. 13, 2023
Applicant:
Sharp Kabushiki Kaisha, Sakai, JP;
Inventor:
Takeshi Nishiyama, Sakai, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/02 (2006.01); G03G 21/18 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0216 (2013.01); G03G 21/1814 (2013.01); G03G 21/1821 (2013.01); G03G 2215/025 (2013.01); G03G 2221/1657 (2013.01);
Abstract
A process unit includes a photoreceptor drum, a charging roller, and a cam member. The cam member includes a mounting portion that externally fits to a shaft portion of the charging roller and a contact portion that protrudes to an outside of the mounting portion. Then, the charging roller is maintained in a separate state by bringing the contact portion of the cam member into contact with an outer surface of the drum main body, and the charging roller is switched to a contact state by rotating the cam member dependently with rotation of the photoreceptor drum in a normal direction.