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. 09, 2022
Filed:
Jul. 18, 2019
Applicant:
Hewlett-packard Development Company, L.p., Spring, TX (US);
Inventor:
Naoya Iwata, Kanagawa, JP;
Assignee:
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 21/20 (2006.01); G03G 15/08 (2006.01); G03G 21/00 (2006.01); G03G 9/00 (2006.01);
U.S. Cl.
CPC ...
G03G 21/206 (2013.01); G03G 15/0813 (2013.01); G03G 15/0817 (2013.01); G03G 15/0896 (2013.01); G03G 21/0052 (2013.01); G03G 9/00 (2013.01); G03G 2215/0602 (2013.01); G03G 2215/08 (2013.01); G03G 2215/0872 (2013.01); G03G 2221/0094 (2013.01); G03G 2221/1645 (2013.01);
Abstract
A developing device includes a developer roller to rotate in a rotation direction, a photosensitive body adjacent the developer roller, and an air flow passage extending through a non-image forming region at a longitudinal end of the developer roller. A closest position is defined where the developer roller and a photosensitive body are closest to one another. The air flow passage extends from inside the developing device and forms an air flow directed toward an upstream side of the closest position, relative to the rotation direction of the developer roller.