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:
Apr. 21, 1998
Filed:
Jun. 11, 1996
Allen Joseph Rushing, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A method and apparatus of producing images includes a primary charger for depositing a primary electrostatic charge on an electrostatographic recording member. A first electrometer measures or senses the primary electrostatic charge. A light source such as an EL panel is enabled to reduce the level of the primary electrostatic charge to provide a reduced voltage level suited for recording on the image frame. The reduced voltage level on the image frame is imagewise modulated to form an electrostatic image. The electrostatic image is then developed with toner. The output of the EL panel is adjusted in response to a first factor related to a measured value of the level of the primary electrostatic charge and a set point value for the level of the reduced voltage level and a second factor related to error in the level of the reduced voltage level from the set point value for the reduced voltage level. In a specific embodiment of a DAD-CAD process, the primary charge on the image frame is imagewise modulated by a first ROS device and developed with a DAD development station. Thereafter, the image frame with the reduced charge level is imagewise modulated by a second ROS device and developed by a CAD development station.