CHAPTER 6 TROUBLESHOOTING
6-24
7. IMAGE DEFECTS
7.1
Image Defect Examples
I-2 Dark
I-1 Light
I-2 Dark
I-3 Completely blank
I-4 All black
I-5 Dirt on back of paper
I-6 Black vertical
streaks
I-6 Black vertical
streaks
I-7 Black horizontal
stripes
I-12 Poor fixing
I-13 Image distortion
I-14 Faint print
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Print out test print out test print out test Print out test print o Print out test print o
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Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
Print out test print out test print out test Print out test print oPrint out test print o
Print out test print out test print out test Print out test print o
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I-19 Hollow print
I-15 White spots
I-16 Black spots
I-18 Gray background
I-17 Black band
I-20 Downward fogging
of solid black
I-21 Horizontal lines
I-11 Faulty
registration
I-10 White horizontal
streaks
I-8 Black vertical
streaks
I-9 White vertical
streaks
I-23 Ghost
I-22 Light rain
I-24 Toner specks
Fig. 6-10
7.2
Diameter of Rollers
The diameter of each roller and the pitch which appears in the image are listed below;
No.
Parts Name
Diameter (The pitch which
appears in the image)
1
First Paper Feed Roller
φ
13.6 mm (42.7 mm)
2
Paper Feed Roller
φ
14.0 mm (44.0 mm)
3 Transfer
Roller
φ
15.20 mm (47.7 mm)
4 Photosensitive
Drum
φ
29.97 mm (94.1 mm)
5 Heat
Roller
φ
25.0 mm (78.5 mm)
6 Pressure
Roller
φ
25.0 mm (78.5 mm)
7 Development
Roller
φ
20.0 mm (39.0 mm)