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A DEVICE FOR REMOVING AND COLLECTING PAPER DEBRIS FROM SHEETS

IP.com Disclosure Number: IPCOM000026577D
Original Publication Date: 1992-Oct-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 65K

Publishing Venue

Xerox Disclosure Journal

Abstract

Paper debris (fibers, dust fillers, etc.) contribute significantly to failures in copiers. For instance: debris in the paper path fouls sensors, solenoids, and frictional materials; fillers foul fuser oil; and more recently, fibers ruin photoreceptor belts. Various solutions to these problems have been tried in the past. For example, U. S. Patent 3,396,401 shows that it is old to use a vacuum system to remove loose toner from the surface of a copy sheet. In U. S. Patents 4,522,488 and 4,556,890, vacuum cleaning systems are disclosed that include screens or bristles that contact with the printhead or the recording surface of magnetic tape in a magnetographic printing device.

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XEROX DISCLOSURE JOURNAL

A DEVICE FOR REMOVING AND COLLECTING PAPER DEBRIS U.S. C1.355/297 FROM SHEETS 1nt.Cl. G03g 21/00 Arthur M. Gooray

Proposed Classification

Paper debris (fibers, dust fillers, etc.) contribute significantly to failures in copiers. For instance: debris in the paper path fouls sensors, solenoids, and frictional materials; fillers foul fuser oil; and more recently, fibers ruin photoreceptor belts. Various solutions to these problems have been tried in the past. For example, U. S. Patent 3,396,401 shows that it is old to use a vacuum system to remove loose toner from the surface of a copy sheet. In U. S. Patents 4,522,488 and 4,556,890, vacuum cleaning systems are disclosed that include screens or bristles that contact with the printhead or the recording surface of magnetic tape in a magnetographic printing device.

An improvement over the above debris removing approaches is the use of a vacuum system in combination with a foam roll to dislodge loose fibers from the surface of copy sheets. The foam roll provides mechanical abrasion to loosen debris while the vacuum system removes and collect loose debris in front of the foam roll. The housing of the vacuum system that faces the brush can be specially shaped to encourage a wall jet and thus, the foam roll would break the boundary layer. This is advantageous to removing fibers. A filter in the vacuum system collects the debris. The foam roll could rotate or be held stationary. Also, a foam strip c...