KPOWERSCIENCE KP3828 Series, Maintenance Manual

Page: 223 / 230

8-51
8.Printing quality (continued)
Re
m
arks
Do not use solvents such as benzene, acetone, etc. Do not expose the OPC drum
to
strong
light for a long period of tim
e.
Re
m
edy
W
ipe the drum
surface with
special clo
th
.
Since printing should be disabled in the zone within
±
2
lines (
±
8.467mm
{
±
1/
3
INCH}) from the perforation, avoid printing within this zone.
Cause
The adhesive of adhesive paper is attached to the OPC drum surface. Due to the u
nevenness o
f the
perforation, the paper will not com
e in close contact with the
drum
at parts near the
perf
oration and the pr
int will not
be transferred onto such parts of the paper
.
Thus an im
ag
e, on which a lar
ge
am
ount of toner is deposited,
rem
ains on the drum
and part of
this ton
er re
m
ains even af
ter the
cleaning process and is retransferred onto the paper in the subsequ
ent transfer process.
Phenom
enon
25.
Toner stains appear in a
periodic m
anner on the white
background parts of the printed surface.
26.
Printing is perform
ed on the
perforation of the sheet and within
±
2 lines from
the
perforation (ghost im
ages
appear).
-To be continued-