Browse Prior Art Database

A LOW TONER SENSOR WIPER

IP.com Disclosure Number: IPCOM000025772D
Original Publication Date: 1987-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 77K

Publishing Venue

Xerox Disclosure Journal

Abstract

In low toner supply sensors of the type including ultrasonic sensors in the toner reservoir for sensing the presence or absence of toner adjacent the sensor, it is important that the sensor be kept free of toner when the toner is at low levels for correct "out of toner" indications. To this end, an arrangement is provided for wiping the sensor with a strand of nylon monofilament cable (of

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XEROX DISCLOSURE JOURNAL

LOW TONER SENSOR WIPER Proposed John D. Zoltner Classification

U.S. C1.355/14D Int. C1. G03g 15/00

lA

' 10

In low toner supply sensors of the type including ultrasonic sensors in the toner reservoir for sensing the presence or absence of toner adjacent the sensor, it is important that the sensor be kept free of toner when the toner is at low levels for correct "out of toner" indications. To this end, an arrangement is provided for wiping the sensor with a strand of nylon monofilament cable (of

- 4 lb. test) toclearitoftoner.

A strand of monofilament cable 10 is supported at a first end on a cam follower 12 mounted for reciprocating movement in a vertical direction on a rotating crankshaft 14. Monofilament cable 10 extends from rotating crankshaft 14 across the face of low toner ultrasonic sensor 16, in close wiping engagement therewith. Cable 10 is supported at a second end by a soft extension spring 18, anchored on a sheet metal clip 20 to a fixed surface, such as a toner reservoir side wall. Cable 10 itself may be mounted to spring 18 via a crimped sleeve connector 22 engaging with the spring 18.

In use, cam follower 12 is vertically reciprocated by the motion of rotating crankshaft 14. This vertical motion is transmitted through cam follower 12 to monofilament cable 10 which, by its vertical movement across the face of sensor 16, wipes at least the sensitive central section of sensor 16 clean, as indicated in the Figure. Extension spri...