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Browse Prior Art Database

SENSOR TO DETECT CLEANING FAILURES

IP.com Disclosure Number: IPCOM000026079D
Original Publication Date: 1990-Feb-28
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 91K

Publishing Venue

Xerox Disclosure Journal

Abstract

It would be highly desirable to detect cleaner failures in electrophotographic devices before the effect of the cleaner failure is noted by the user. With early detection of the failure, automatic corrective action or servicing is possible.

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XEROX DISCLOSURE JOURNAL

SENSOR TO DETECT CLEANING FAILURES U.S. C1.3551299 Nero R. Lindblad
Herbert Relyea

Proposed Classification

Int. C1. G03g 21/00

It would be highly desirable to detect cleaner failures in electrophotographic devices before the effect of the cleaner failure is noted by the user. With early detection of the failure, automatic corrective action or servicing is possible.

It is proposed to provide a pad of foam or other material suitable for cleaning a charge retentive surface of an electrophotographic device, arranged downstream from the main cleaner member. Such a pad has some amount of toner removing capacity, and continually accumulates toner while in contact with the charge retentive surface. Periodically, the pad is removed from the surface, and examined by a sensor to determine, by the amount of toner collected by the pad, whether the amount of toner remaining on the charge retentive surface after cleaning indicates proper operation of the cleaner. In the event that too much toner is detected on the pad, automatic corrective action or a servicing recommendation will be made. Besides the feature of detecting failure, the arrangement also provides a redundant cleaning system for the removal of minor streaks and spots.

In one possible embodiment of the present proposal, a series of pads are supported on a carousel device to bring one of the pads into cleaning contact with the charge retentive surface, to subsequently carry the pad to a sensi...