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:
Sep. 18, 2000
Filed:
Dec. 28, 1997
Matthias H Regelsberger, Rochester, NY (US);
Allen J Rushing, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
An electrostatographic recording apparatus and method includes a primary charger establishing a uniform primary electrostatic voltage level on an image recording member. A recorder imagewise modulates the electrostatic charge on the image recording member to form a latent electrostatic image. A development station develops the electrostatic image with toner. A controller controls the primary charger by periodically adjusting a signal to the primary charger in response to a signal related to charger efficiency. The charger efficiency is determined as the ratio of the charger's grid voltage to a voltage level established on the recording member. To calculate changes to the grid, voltage control patches are printed on the member and the densities used to determine changes to setpoint values for the charger.