Image Defects - Brother MFC-8460N Service Manual

9.2.4.4 Image defects

[ 1 ] Image defect examples
I-1 Light
I-6 Black vertical
streaks
I-10 White horizontal
streaks
I-15 White spots
I-20 Downward fogging
of solid black
[ 2 ] Diameter of rollers
The diameter of each roller and the pitch which appears in the image are listed below.
No.
1 Paper Feed Roller
2 Transfer Roller
3 Exposure Drum
4 Heat Roller
5 Pressure Roller
6 Developer Roller
I-2 Dark I-2 Dark
I-6 Black vertical
streaks
I-11 Faulty
registration
I-16 Black spots
I-21 Horizontal lines
Parts Name
Ø 14.0 mm (44.0 mm)
Ø 15.2 mm (48.2 mm)
Ø 30.0 mm (94.2 mm)
Ø 25.0 mm (78.5 mm)
Ø 25.0 mm (78.5 mm)
Ø 20.0 mm (42.7 mm)
I-3 Completely blank I-4 All black
I-7 Black horizontal
I-8 Black vertical
stripes
streaks
I-13 Image distortion
I-12 Poor fixing
I-18 Gray background
I-17 Black band
I-23 Ghost
I-22 Light rain
Fig. 9-1
Diameter
(The pitch which appears in the image)
9-28
I-5 Dirt on back of paper
I-9 White vertical
streaks
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I-14 Faint print
I-19 Hollow print
I-24 Toner specks
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