Confirming Nip Width - Canon imageCLASS MF4890dw Service Manual

5
Adjustment > Mechanical Adjustment > Confirming Nip Width
Mechanical Adjustment

Confirming Nip Width

Caution :
Be sure to follow the procedures below, otherwise the fixing film or the fixing sleeve
may be damaged.
The nip width of the fixing unit is not adjustable in this printer, however, the incorrect nip width
may cause the faulty fixing.
Follow the procedures below to check the nip width.
1) Prepare an all-black print of A4 size made by the same type of EP Toner cartridge for this
printer before visiting the customer site.
2) Load the printed sheet facing DOWN on the pickup tray.
3) Print a test-page.
4) Turn off the printer when the leading edge of the paper appears in the face-down delivery
slot.
Wait for 60 seconds and open the cartridge door to remove the paper from the printer.
5) Measure the width of the glossy band across the paper and check if it is meeting the
requirements below.
Wasp/Horsethief/Blackrock
• Center (a): 5.5mm to 8.1mm
• Right and left (b, c): 5.5mm to 8.1mm
5 Adjustment > Mechanical Adjustment > Confirming Nip Width
c
Feed out direction
5-2
Center
of
A4-sized
paper
a
b
F-5-1
5-2