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:
Jun. 05, 1990
Filed:
Nov. 14, 1988
Applicant:
Inventors:
Joanne M Higgins, Rochester, NY (US);
Michael Mosehauer, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355203 ; 118689 ; 355246 ;
Abstract
An electrostatographic reproduction machine includes a toner concentration monitor having a resistive element through which electrical current is passed. The resistive element is heated by the electrical current. In a steady state mode, the resistive element transfers heat to its surroundings and attains a steady state temperature dependent upon the heat transfer characteristics of the surroundings. The toner concentration is detected by measuring the power into the resistive element. The heat transfer characteristics are determined by the thermal conductivity and the flow rate of the developer mixture.