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. 25, 1992
Filed:
Apr. 09, 1991
Todd A Kahle, Hartford, WI (US);
Infographix, Inc., Sussex, WI (US);
Abstract
An electrophotographic copier includes a transfer/charge section, a developer/cleaner section, and a photoreceptor having a surface with first and second image areas. Copies are produced by moving the photoreceptor a half revolution so that the first image area passes through the transfer/charge section in which a uniform charge is applied to the first image area. The charged first image area is exposed to a light image producing an electrostatic image on a surface of the photoreceptor. Toner is applied to the exposed first image area as it passes through the developer/cleaner section. The toned image is transferred to paper by moving the first image area through the transfer/charge section, after which the toner is fused onto the paper. When an another copy is to be made, the second image area passes through the transfer/charge section to apply a uniform charge to that image area while the developer/cleaner section removes residual toner from the first image area. Then the second image area is used to produce the next copy. Otherwise the transfer/charge section is not activated and only the residual toner is removed from the first image area before the copying process ends.