Browse Prior Art Database

Fuse Grade Measurement

IP.com Disclosure Number: IPCOM000048316D
Original Publication Date: 1982-Jan-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Bankert, NR: AUTHOR [+3]

Abstract

The extent to which xerographic toner adheres to copy paper, and to itself, after heat fusing, is measured by applying a known amount of mechanical wear to a fused toner test pattern and measuring the change in light reflectance which occurs as compared to a similar fused toner test pattern which has not been abraded.

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Fuse Grade Measurement

The extent to which xerographic toner adheres to copy paper, and to itself, after heat fusing, is measured by applying a known amount of mechanical wear to a fused toner test pattern and measuring the change in light reflectance which occurs as compared to a similar fused toner test pattern which has not been abraded.

Fig. 1 shows the test pattern which is placed onto a xerographic copier's document glass for copying. The resulting copy contains two identical tracks A and B, each consisting of four identical test patterns. These tracks are concentric about what will be a center of rotation 10. A circular disc of approximately four-inch diameter is now cut from the copy, centered on the center of rotation 10. The outer boundary of this disc includes outer track A.

Fig. 2 is a schematic view of an abrading unit. This unit includes a driven platform 11 having a center of rotation 12. A pair of abrading wheels 13 and 14 freely rotate on a common axis 15 and are force-loaded onto platform 11. Axis 15 does not occupy the same plane as the center of rotation 12; thus, one abrading wheel rubs platform 11 outward toward its periphery, as the other wheel rubs the platform inward toward its center of rotation 12.

The circular disc which was cut from the copy, as shown in Fig. 1, is mounted on platform 11 with centers of rotation 11 and 12 coincident. Platform 11 includes a clamp ring 20 which holds this disc in place and prevents relative movement between the disc and the pl...