MAINTENANCE & FAULT FINDING
Problem Action
Print rubs off
f reasons:
going to
ent in cold
he Darkness
the
levels of the head
perature
ribbon may
ill be warm and could rub off. Trying
ld be the
bstrate. Some
ke it very
tings may
sin mix
n. If this is the
sk your
r ribbon
This can be for a number o
There is not enough energy
the head. This is more appar
environments. Increasing t
and in extreme conditions,
background energy
can make a difference to the
permeability.
In environments of high tem
and humidity, the applied
st
a different ribbon grade cou
solution.
Mismatch in ribbon/ su
substrate has coatings that ma
difficult to adhere to. The coa
be, for example, a wax/ re
similar to the actual ribbo
case, then trying another ribbon grade is
the best recommendation. A
local Domino distributor fo
advises.
Ribbon Creasing ue to the
ack’ across the
n causes
Bent ribbon guide pins. This may occur
ible to bend a pin back into
e the guide
ff roller. Remove and
nment can
creasing as
ribbon
across the print head.
Ribbon creasing is generally d
ribbon attempting to ‘tr
print head. The most commo
are:
if the cassette is dropped. It is not
usually poss
position. Remove and replac
pin.
A bent peel o
replace the peel bar.
Poor print platen / roller alig
in some cases cause ribbon
the substrate tries to pull the
Print roller/ platen
If the print roller has become damaged
this will cause print quality problems. A
flat spot on the roller will appear as a
repeated blank area on the Test pattern.
(
240) 27864 Issue 1 January 2008
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