Browse Prior Art Database

FUSER OIL CONTROL

IP.com Disclosure Number: IPCOM000026575D
Original Publication Date: 1992-Oct-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 77K

Publishing Venue

Xerox Disclosure Journal

Abstract

Some copiedprinter machines use roll fusers for fusing images to copy sheets. These roll fusers use oil as a release agent to keep the melted toner from sticking to the fuser roll. Oil is also used to aid sheet stripping from the fuser roll, but the oil applied for this purpose is needed most at the sheet lead edge.

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XEROX DISCLOSURE JOURNAL

FUSER OIL CONTROL

Proposed Gerald M. Garavuso Classification

U.S. C1.355/282 Int. C1. G03g 15/20

Some copiedprinter machines use roll fusers for fusing images to copy sheets. These roll fusers use oil as a release agent to keep the melted toner from sticking to the fuser roll. Oil is also used to aid sheet stripping from the fuser roll, but the oil applied for this purpose is needed most at the sheet lead edge.

Unfortunately, the amount of oil that is applied to a sheet must be kept to a minimum or it will present a problem to anyone trying to type or write on a fused sheet as the oil keeps the ink from adhering to the sheet. The oil layer, normally applied, is approximately 1 microliter per sheet and this is difficult to deliver by wicking in anything but a steady state condition since the oil tends to puddle exposing the first several copies to high levels of oil.

An answer to this problem is a device which applies oil to the fuser roll by spraying it on possibly using an atomizing spray. The spray could be masked by a shutter device so that the spray can be developed to a steady state condition before the shutter is opened. This would allow the application of a precisely controlled layer of oil for each sheet from the first to any number desired. Further, by using different masks, the oil layer applied could be thicker at the lead edge of the sheet, where few end users are likely to write or type, than it is in the rest of the sheet. A...