Browse Prior Art Database

HEAT PRESSURE FUSER APPARATUS

IP.com Disclosure Number: IPCOM000025101D
Original Publication Date: 1983-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 126K

Publishing Venue

Xerox Disclosure Journal

Abstract

A heat and pressure roll fusing apparatus for fixing toner images to copv substrates. The apparatus includes a release agent management system (RAM! for applying release agent such as functional silicone oil to a heated roll of the apparatus. The RAM comprises a doner roll, a metering roll and a metering blade which cooperate to convey silicone oil from a sump to the surface of the heated roll. The metering roll which is contacted by the metering blade is provided with a helical groove which acts to scrape the tip of the metering blade and move paper related residue dislodged therefrom to the end of the metering roll where it is collected for subsequent disposal.

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CEROX DISCLOSURE JOURNAL

HEAT PRESSURE FUSER APPARATUS Alvin D. Kromm, Jr.

Rabin Moser

Proposed Classification
U.S. C1. 355/3FU Int. Cl. G03g 15/00

FIG. 2

Volume 8 Number 4 July/August 1983 339

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

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HEAT PRESSURE FUSER APPARATUS (Cont'd)

A heat and pressure roll fusing apparatus for fixing toner images to copv substrates. The apparatus includes a release agent management system (RAM! for applying release agent such as functional silicone oil to a heated roll of the apparatus. The RAM comprises a doner roll, a metering roll and a metering blade which cooperate to convey silicone oil from a sump to the surface of the heated roll. The metering roll which is contacted by the metering blade is provided with a helical groove which acts to scrape the tip of the metering blade and move paper related residue dislodged therefrom to the end of the metering roll where it is collected for subsequent disposal.

For the purpose of coating the heated roll structure 12 there is provided a release agent management system generally indicated 40. The mechanism 40 comprises a donor roll 42, metering roll 44 and a metering blade 46.

The metering roll 44 is partially immersed in the released agent material 36 and is supported for rotation such that it is contacted by the donor roll 42 which, in turn, is supported so as to be contacted by the heated roll structure 12. As can be seen, the orientation of the rolls 42 and 44 is such as to provide a path for conveying material 36 from the sump to the surface of the heated roll structure 12. The meterinq roll is preferably a steel-surfaced roll having a 4-32 AA finish. The metering roll has an outside diameter of 0.75 inch. As mentioned above, the metering roll is supported for rotation, such rotation being derived by means of the positively driven heated roll structure 12 via the rotatably supported donor roll 42. In order to permit rotation of (at a practical input torque to the heated roll structure 12) the metering roll 44 in this manner the donor roll 42 comprises a deformable layer 49 which forms a first nip 50 between the metering roll and the donor roll and a second nip 52 between...