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LIQUID DEVELOPER THICKNESS SENSOR

IP.com Disclosure Number: IPCOM000023548D
Original Publication Date: 1978-Feb-28
Included in the Prior Art Database: 2004-Mar-31

Publishing Venue

Xerox Disclosure Journal

Abstract

A sensor 10 is shown for measuring the thickness of ink 12 on the photoreceptor 14 of a liquid development reproduction machine. A clamp 16 positions an electrically conductive element 18 on an insulating support, e.g. Mylar film, a pre-determined distance from photoreceptor 14. As the thickness of ink 12 changes, a corresponding change in the capacitance between element 18 and photoreceptor 14 is detected by circuit