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. 27, 1996
Filed:
Nov. 07, 1994
Thomas F Szlucha, Fairport, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A method and apparatus for minimizing operator manual adjustments for toner concentration drifts in a printing machine. The method includes storing into a controller, a value for a toner concentration factor, and of estimating a quantity of toner to be depleted by each toner reproduction of a document sheet. The method also includes maintaining the toner concentration ratio by adding to a development housing a quantity of fresh toner, and of keeping a running count of toner reproductions of document sheets made. The method further includes manually adjusting the quantity of fresh toner added based on inspecting toner reproductions made, keeping a count of the number of such manual adjustments, and automatically correcting the stored value for the toner concentration factor, when the number of manual adjustments, relative to a predetermined running count of toner reproductions, reaches a predetermined number.