IMAGE FUSING AND PAPER EXIT
SM 6-93 B135/B138
Detailed
Descriptions
6.15.8 HOT ROLLER STRIPPER CLEANING
Toner clinging to the hot roller strippers can cause black dots to appear on the
back sides of copies so the widths of the strippers have been reduced from 3 mm
to 0.5 mm. In addition to this design change, the hot roller strippers are cleaned by
switching the fusing/exit motor off/on to rotate the hot roller and dislodge any toner
clinging to these strippers.
When printing ends, the fusing/exit motor switches off for 15 sec. then switches on
for 15 sec. This on/off cycle is repeated for the number of times specified with
SP3905 1 (Default: 1 off/on cycle). While the fusing/exit motor is switched off/on
during the cleaning cycle, all fans remain on.
The hot roller strippers are also force cleaned by adjusting and raising the setting
of SP5959 (1
st
Print Delay Timing) which allows the drum and hot roller to turn
freely to allow more time for cleaning before printing. However, make sure that the
customer understands that increasing this SP setting slows down the first print time.
These are the SP codes that control hot roller stripper cleaning. (For details, refer
to Section “5. Service Tables”.
No. Name Function
SP3905 1 Number of Rotations
Prescribes the number of times the hot roller is
rotated at the end of the print job if the print job
exceeds the number of pages specified with SP3905
2. (Default: 1)
SP3905 2 Number of Pages
Prescribes the number of pages to print and trigger
hot roller stripper cleaning. Cleaning executes only if
the number of pages in the print job exceeds this
number. (Default: 15 pp.)
The timing chart below shows the fusing/exit motor switched off and on twice at the
end of a print job.
Print Job End
Fusing/
Exit motor
Fusing
Temperature
15 sec. 15 sec.
Off/On 1 Off/On 2
1 min.
Re-load Temperature
B135D918.WMF
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