Samsung SL-M4580FX - Fuser Unit Information

2.ProductSpecicationsandDescription
2.6.Fuserunit
Thissectiondescribesthefuserunitstructureandtheimagefusingprocess.
2.6.1.Fuserunitoverview
ThismodelusestwoHeaterLampswhichprovidesforamuchfasterwarm-uptimethanthatofaconventionalfusing
system,thereforeittsinthecategoryofaninstantfusingsystem.
1)Drum-fuserbelt
Thedrum-fuserbeltismadeof3thinlayersthatcanbeheatedbythehalogenlampinsidemorequickly.Thedrum-fuser
beltcontains2fusinglamps.Onelamp,centerheatinglamp,heatsthecenterandtheotherlamp,sideheatinglamp,
heatstheendsintheaxialdirection.
2)PressureRoller
Thepressurerollerismadeofsoftsiliconerubber,whichattenslightlycreatesthefusingnip.
3)NCsensor
NCsensors(non-contacttypethermistors)arelocatedinthefrontareaandthesideareaofthedrum-fuserbeltand
controlsthetemperature.Theyprotectsthefusingsystemfromoverheating.
4)Thermostat
Thermostatscutoffthepowersupplytothehalogenlampbyopeningthecircuitwhenthefuserbeltbecomesabnormally
hotasaresultofproblemssuchasNCsensormalfunction.Thesethermostatsareusedtopreventabnormaloperation.
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