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Browse Prior Art Database

TAPE CLEANER

IP.com Disclosure Number: IPCOM000025315D
Original Publication Date: 1984-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 90K

Publishing Venue

Xerox Disclosure Journal

Abstract

In magnetography, the recording surface of the magnetic tape must be cleaner than that acceptable for an image retentive member in an electrophotographic copier. This is because the magnetic recording head in a magnetographic system is generally held in contact with a moving tape. Contaminants such as paper particles, dust and toner particles that are on the tape recording surface collect on the recording head. The debris collected on the recording head reduces the quality of the recorded image.

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IXEROX DISCLOSURE JOURNAL

TAPE CLEANER Almon P. Fisher

XEROX

TAPE CLEANER Proposed Classification

U.S. C1. 355/15 Int. Cl. G03g 21/00

Volume 9 Number 4 July/August 1984

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u 22

In magnetography, the recording surface of the magnetic tape must be cleaner than that acceptable for an image retentive member in an electrophotographic copier. This is because the magnetic recording head in a magnetographic system is generally held in contact with a moving tape. Contaminants such as paper particles, dust and toner particles that are on the tape recording surface collect on the recording head. The debris collected on the recording head reduces the quality of the recorded image.

Typically, a photoconductive member in an electrophotograohic system has 70 to 100 particles (mostly toner) per square millimeter on the surface thereof after it has been cleaned. This is totally acceptable for most electrophotographic systems, but far too dirty for magnetograohic printers. By combining a vacuum cleaning system with a web cleaning system in a magnetographic printing system, the recording surface of the magnetic tape can be cleaned to about 0.05 particles per square millimeter.

With the addition of a third cleaning station, such as the tape cleaner 10 shown in the accompanying figure, the recording surface 14 of the magnetic tape 12 could be reduced another order of magnitude, to about 0.0056 particles Der square millimeter. In addition, after testing such a tape cleaner for about four hours, the recording surface was found to be still free of any evidence of toner particle smearing or scumming...