Canon iR8500 Service Manual

Also see for ImageRunner iR8500 Series: Function guide Servise manual Service manual Service manual

Contents

CHAPTER 2 NEW FUNCTIONS2-148 COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 20019.2 Changes to the Fixing SystemT02-902-01Unit/locationFixingSeparation clawRoller constructionRoller materialDeliveryDouble-sidedChanges to GP605Change to the fixing roller diameter (from 50 to 60 mm)Change to the pressure roller diameter (from 38 to 50mm)Change to the web roller diameter (from 24 to 28 mm)Change to the web roller pressure (1.5 times as high)Eliminating the pressure roller insulating memberFixing of the inlet guide swing mechanism in placeChange to the distance to the pressure roller static elimi-nator (from 1.5 to 4 mm)Change to the control temperature (198°C for bothstandby and feeding)Change to the thermo switchIncrease in the power (1500W/200V model, 1000W/100V)Change in the position of the separation clawChange to the leading edge radius (from 70 μ to 50 μ)Reduction in the holder escape pressureChange to the shape of the bottom of the holderChange to the shape of stopper of clawChange to the number of internal delivery rollers (form4 to 6)Change to the number of external delivery rollers (from4 to 6)Change to the shape of the curl-reduction rollerUse of a different material (internal delivery, reversalauxiliary, curl reducing roller)Elimination of the curl guideChange to the reference for reversal sequence (to lead-ing edge; all paper types)PurposeTo support higher speedTo support higher speedTo support thermistor passageTo support thermistor passageTo support the larger diameter of the pressurerollerTo improve feeding and to prevent wrin-klingTo prevent soiling of the back (of copies) by thepressure rollerThe edge temperature of the fixing assem-bly is higher than of the GP605To reduce soiling of the edges of sheetsTo reduce jamming at the clawsTo reduce damage to the rollerTo reduce damage to the rollerTo reduce damage to the rollerTo reduce curlingTo reduce curlingTo reduce curlingTo increase durabilityTo support the external delivery roller witha collarTo support tab sheetsRemarks223°C 228°CIn GP605 (iR600), 850W(100V/20A model)In the case of the GP605, thereference is to the trainingedge.Reference9.3 Controlling the Fixing Tem-perature9.1 Outline of the Fixing System