Browse Prior Art Database

Cleaning Brush Control

IP.com Disclosure Number: IPCOM000052502D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Brannan, RC: AUTHOR [+4]

Abstract

The engagement of a copier's cleaning station brush to the photoconducto is dynamically controlled by monitoring copy-use parameters, such as the length of copy runs and the amount of toner used.

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This is the abbreviated version, containing approximately 84% of the total text.

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Cleaning Brush Control

The engagement of a copier's cleaning station brush to the photoconducto is dynamically controlled by monitoring copy-use parameters, such as the length of copy runs and the amount of toner used.

It is usual to compensate for cleaning brush wear by advancing or incrementing the brush's rotational axis toward the photoconductor's drum surface as a function of the number of revolutions of the photoconductor drum. For example, for each N revolutions, the brush is incremented 0.004 inch toward the photoconductor.

Since the brush rotates during cycle-up, copy run, and cycle-down of the copier, and since brush wear is more nearly a function of the presence of toner on the photoconductor during the copy run portion of its cycle, more brush wear occurs from N drum revolutions of long copy request runs than when the same number of drum revolutions occur due to short copy-request runs. Also, the type of document which uses a lot of toner, for example, an all-black document, represents more toner use per copy, and thus more brush wear during a drum revolution.

Therefore, more accurate compensation for brush wear occurs when brush incrementing not only occurs as a function of photoconductor drum revolutions, but also as a function of the type of copy-requests which have been experienced, and the amount of toner which has been used. Toner use can be measured by counting the number of times that virgin toner is fed to the developer station. This feeding...