Browse Prior Art Database

AUTOMATIC SENSOR CLEANING SYSTEM

IP.com Disclosure Number: IPCOM000024947D
Original Publication Date: 1983-Feb-28
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 45K

Publishing Venue

Xerox Disclosure Journal

Abstract

In the process of manipulating documents in a recirculating document handler (RDH), paper dust and other contaminants collect and in time reduce the sensitivity of opto-electronic sheet sensing devices controlling the timing and operability of the RDH. This may be prevented by directing a continuous, but pulsating stream of air at sensor and sensor mirror surfaces while the document handler is in operation. T'nis air flow is strong enough to keep the paper dust and other particles from contaminating the sensors but small enough so as to not impede the RDH's ability to handle the lightest weight documents.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

AUTOMATIC SENSOR CLEANING SYSTEM Proposed William J. Woznicki Classification

US. CI. 271/110 Int. Cl. B65h 7/08

In the process of manipulating documents in a recirculating document handler (RDH), paper dust and other contaminants collect and in time reduce the sensitivity of opto-electronic sheet sensing devices controlling the timing and operability of the RDH. This may be prevented by directing a continuous, but pulsating stream of air at sensor and sensor mirror surfaces while the document handler is in operation. T'nis air flow is strong enough to keep the paper dust and other particles from contaminating the sensors but small enough so as to not impede the RDH's ability to handle the lightest weight documents.

The sensor may comprise a conventional photo-optical transmitter/detector unit on one paper guide or baffle and an opposing mirror on the opposing baffle (the sheet path is between the two baffles). By appropriate location one air nozzle can blow against and clean both the sensor and mirror surfaces, directly or by air stream deflection.

Volume 8 Number 1 January/February 1983 11

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

Page 2 of 2

12

    XEROX DISCLOSURE JOURNAL Volume 8 Number 1 January/February 1983

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