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:
Jul. 01, 2014
Filed:
May. 07, 2012
Mark C. Zaretsky, Rochester, NY (US);
Mark C. Zaretsky, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A method of charging a photoreceptor () includes a first corona charging unit () a first corona electrode (), a first shell electrode (), and a first high voltage power supply (). The shell electrode is connected through a resistor to ground and the high voltage power supply is connected to the first corona electrode. A second corona charging unit () has a second corona electrode (), and a first grid electrode () connected to a second shell electrode (). A first corona current from the first high voltage power supply to the first corona electrode and a return current from the first shell electrode to ground is sensed and a voltage on the first high voltage power supply is adjusted to maintain a constant difference. The first corona charging unit charges the photoreceptor to at least 63% of the desired voltage.