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Fuser Hot Roll Sensor Strip Cleaner and Roughener

IP.com Disclosure Number: IPCOM000051037D
Original Publication Date: 1982-Aug-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Korsch, RF: AUTHOR [+2]

Abstract

The sensor strip surface for a hot roll is cleaned and roughened by applying an abrasive to the surface of the strip as it is rotated.

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Fuser Hot Roll Sensor Strip Cleaner and Roughener

The sensor strip surface for a hot roll is cleaned and roughened by applying an abrasive to the surface of the strip as it is rotated.

Fuser hot roll 10, as shown in Fig. 1, includes a coated inner portion 11 and a bare metallic extension 12 which typically receives a temperature-sensing shoe in operation. The temperature sensor does not operate adequately if the surface of shoulder 12 is either excessively smooth or contaminated. The surface is both cleaned of contaminants and appropriately roughened by placing wedge 15 between fixed frame member 16 and the surface of roll shoulder 12, as shown in Fig. 1. Block 15 is shown in Fig. 2 and preferably is made from a silicon foam rubber base 20 with sandpaper strips 21 and 22 glued to its external surface as with silicon RTV. Wedge 15 is placed on the sensor strip surface 12 without removal of hot roll 10 from the fuser. Wedge 15 is captured between roll 10 and machine frame 16, and roll 10 is rotated by applying rotary power in the direction of arrow 25, thus automatically roughening and cleaning surface 12. The direction of rotation 25 maintains wedge 15 in place. Preferably, separate sandpaper strips 21 and 22 are used to allow wedge 15 to deform and conform to the contour of surface 12. Strips 21 and 22 are positioned slightly inwardly from the edge as best seen in Fig. 2 to prevent damage to the hot roll. This permits uniform sensor strip finish and cleaning with...