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Browse Prior Art Database

FUSER TEMPERATURE AND TONER MASS CONTROL

IP.com Disclosure Number: IPCOM000026894D
Original Publication Date: 1994-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 89K

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is a method to increase fuser roll temperature while decreasing the amount of toner deposited on a copy when fixing an image to a heavyweight substrate such as label stock, transparencies, or card stock. By implementing the two actions, the image fixing level on subsequent copies is maximized. A second embodiment employs the proposed method to increase fuser temperature when copying with color toners.

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XEROX DISCLOSURE JOURNAL

FUSER TEMPERATURE AND TONER MASS CONTROL Frederick C. Debolt
Kenneth R. Rasch
David M. Thompson

Proposed Classification

U.S. C1.355/285 Int. C1. G03g 15/20

Proposed is a method to increase fuser roll temperature while decreasing the amount of toner deposited on a copy when fixing an image to a heavyweight substrate such as label stock, transparencies, or card stock. By implementing the two actions, the image fixing level on subsequent copies is maximized. A second embodiment employs the proposed method to increase fuser temperature when copying with color toners.

Poor image fixing on heavyweight copy substrates is caused by two primary factors: the additional energy required to fuse images to heavier substrates as compared to 20 lb. paper, and the fringe effects from a development system that yields a Toner Mass per unit Area (TMA) that is higher for line copy as opposed to solid area development. When running a xerographic copier with any heavyweight copy substrate, it is proposed that the fuser temperature be raised by a predetermined amount such as, for example, 10°F while at the same time, decreasing the grid voltage on a charge scorotron so that the subsequent TMA be no more than 0.8 g/cm2. Tests indicate that these two steps greatly improve the image fixing level on a heavyweight copy substrate. The image fix level on transparencies pass a severe scratch test, and labels are able to withstand the strain of being peeled off from thei...