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:
Apr. 21, 2025
Filed:
Jan. 01, 2023
Lexmark International, Inc., Lexington, KY (US);
Marc Cousoulis, Lexington, KY (US);
Michael Charles Day, Lexington, KY (US);
Kweku Korsah, Lexington, KY (US);
Jared Kouhui Lin, Lexington, KY (US);
David William Shuman, Lexington, KY (US);
Matthew Russell Smither, Frankfort, KY (US);
LEXMARK INTERNATIONAL, INC., Lexington, KY (US);
Abstract
An imaging device has a developer roll to provide toner to a photoconductive drum to develop a latent image on the drum for direct transfer to media or an intermediate transfer member. A power supply in communication with a controller sets relative voltages on the developer roll and drum. During transfer of the toner, the imaging device determines a current between the developer roll and drum. In turn, the controller determines a charge and mass of the toner for setting with the power supply an operating voltage on the drum or developer roll. Preventing and reporting toners with insufficient charge are other embodiments.