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:
Feb. 02, 2021
Filed:
Oct. 04, 2018
Applicant:
Hewlett-packard Development Company, L.p., Spring, TX (US);
Inventor:
Yasuyuki Ishii, Yokohama, JP;
Assignee:
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 21/00 (2006.01);
U.S. Cl.
CPC ...
G03G 21/0094 (2013.01); G03G 21/0047 (2013.01); G03G 21/0058 (2013.01); G03G 21/0088 (2013.01); G03G 2221/0036 (2013.01);
Abstract
An image forming apparatus includes a lubricant application device to apply a lubricant to a photoreceptor surface of the image forming apparatus, and a lubricant residual amount detector to detect a residual amount of the lubricant. The residual amount of the lubricant is compared to a predetermined amount, and a charging device charges the photoreceptor surface by selectively applying a DC voltage of varying voltage to the photoreceptor surface in response to the comparison of the residual amount of the lubricant to the predetermined amount.