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. 05, 2013
Filed:
Aug. 27, 2010
Donald S. Rimai, Webster, NY (US);
Kenneth J. Brown, Penfield, NY (US);
Charles H. Hasenauer, Rochester, NY (US);
Donald S. Rimai, Webster, NY (US);
Kenneth J. Brown, Penfield, NY (US);
Charles H. Hasenauer, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A piezoelectric crystal adjacent to a development member in an electrophotographic printer has an electrode on it facing the development member. An AC bias is applied across the crystal while a DC bias is applied between the electrode and the development member to measure toner-mass deposition rate. An AC bias is then applied between the electrode and the development member to measure developer flow rate. The toner concentration of the developer is determined using the measured toner mass-deposition rate and developer flow rate.