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Browse Prior Art Database

LIQUID DEVELOPER THICKNESS SENSOR

IP.com Disclosure Number: IPCOM000023548D
Original Publication Date: 1978-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 179K

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

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

LIQUID DEVELOPER THICKNESS
SENSOR
Robert F. Buchheit
Paul R. Spencer

Proposed Classification
U.S. Cl. 355/3
mt. Cl. G03g 15/00

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


20.

16

'4

Volume 3 Number 1 January/February 1978 61

[This page contains 1 picture or other non-text object]

Page 2 of 2

XEROX DISCLOSURE JOURNAL

62 Volume 3 Number 1 January/February 1978

/fit

[This page contains 1 picture or other non-text object]