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. 26, 2005
Filed:
Jun. 21, 2002
Eric C. Stelter, Pittsford, NY (US);
Kenneth P. Friedrich, Honeoye, NY (US);
Joseph Guth, Holley, NY (US);
Eric C. Stelter, Pittsford, NY (US);
Kenneth P. Friedrich, Honeoye, NY (US);
Joseph Guth, Holley, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A mechanism and process for detecting mottle or banding in a developed electrophotographic image. Within an electrophotographic reproduction apparatus, a photoconductor is used for receiving and developing a latent image. The photoconductor traverses a path that passes a charging station, an exposure station, a toning station, and a transfer station. Either a densitometerfor measuring the density of the developed image on the photoconductor, or an electrometerorfor detecting the voltage of the image on the photoconductor, detects mottle or banding on the developed image. The densitometeror electrometerorhas an aperture small enough to detect mottle or banding with wavelengths perceptible by human eyes. A logic and control unitaverages the image density or voltage measurements, calculates the variations of the measurements about the average and the periodicities of the measurements, and if the variations or periodicities indicate mottle or banding is present, changes the operation of one or more stations to reduce mottle or banding.