Browse Prior Art Database

COMBINATION RADIANT AND PRESSURE FUSER

IP.com Disclosure Number: IPCOM000026116D
Original Publication Date: 1990-Jun-30
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 75K

Publishing Venue

Xerox Disclosure Journal

Abstract

A toner image fixing process and apparatus are disclosed. Toner images are first subjected to energy levels by a radiant heat source 10 to render the toner soft and then the images are passed through a pressure roll arrangement comprising three rolls 12, 14 and 16. The top roll 12 or the one that contacts the toner images is provided with a plastic cover, specifically a polycarbonate sleeve 18. The plastic used provides a surface which conforms to the toner particulate shape under pressure. The advantage of this process is that it permits the use of any toner which can be heat softened at significantly lower energy levels than needed for simple radiant systems. The pressure rolls complete the flow process and fix toner on the paper substrate 20. The plastic conformable surface ensures a copy quality comparable to traditional roll images.

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XEROX DISCLOSURE JOURNAL

COMBINATION RADIANT AND Proposed Classification PRESSURE FUSER U.S. C1.355/200 Rabin Moser
G03g Int. Victor Berko-Boateng C1. 15/00

XEROX DISCLOSURE JOURNAL - Vol. 15, No. 3 May/June 1990 147

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COMBINATION RADIANT AND PRESSURE FUSER(Cont'd)

A toner image fixing process and apparatus are disclosed. Toner images are first subjected to energy levels by a radiant heat source 10 to render the toner soft and then the images are passed through a pressure roll arrangement comprising three rolls 12, 14 and 16. The top roll 12 or the one that contacts the toner images is provided with a plastic cover, specifically a polycarbonate sleeve 18. The plastic used provides a surface which conforms to the toner particulate shape under pressure. The advantage of this process is that it permits the use of any toner which can be heat softened at significantly lower energy levels than needed for simple radiant systems. The pressure rolls complete the flow process and fix toner on the paper substrate 20. The plastic conformable surface ensures a copy quality comparable to traditional roll images.

148 XEROX DISCLOSURE JOURNAL - Vol. 15, No. 3 May/June 1990

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