Epson Stylus Pro 7700 Service Manual page 161

Epson Stylus Pro 7700/7710/7700M/7710M/7900/7910/9700/9710/9900/9910/WT7900/WT7910/9890/9908/7890/7908
Symptom Occurrence condition
Water resistance of the CPF • Water drops are attached
on the coated side of the
CPF, and the tracks of the
water appear.
• If the medium is touched
when wet with water, the
print surface is peeled.
Paper dust is attached to the Roller traces appear slightly at
CPF. the area pressed by the driven
roller. (Roller traces may
occur within the area
approximately 50 cm from the
leading edge after the CPF is
loaded.)
White lines appear in the After a few days from
paper feed direction.* printing, white lines like dirt
appear in the paper feed
direction.
TROUBLE SHOOTING
Cause
If water drops are attached on the printed side of the CPF, the coat layer
absorbs water and becomes soft again. If touched in this condition, the
coat surface will be removed. (The CPF is less durable against water
than PGPP, but more durable than commercially available clear films
from other suppliers against water.)
Because the CPF is fed after paper with much paper dust such as plain
paper is used, the traces of the driven roller appear on the printed side
due to the transferred paper dust attached on the roller.
• The coated surface becomes uneven by the coating material leaked
from the cracks because tiny cracks are caused on the CPF coated
surface by the pressure of the driven roller.
• It becomes whiter because the light is diffused on the uneven
surface.
Remedies for Print Quality Troubles
Remedy/Points to be checked
• Do not let water drops attached on the media.
• Do not display the prints outdoor.
• The paper dust on the driven roller can be removed by
feeding the CPF approximately 50 cm.
• When printing on the area with the paper dust attached,
the dust traces become hard to see.
• Wipe the paper dust on the non-print area with a soft
cotton cloth and such.
Comply with the usage environment of the CPF
otherwise, required print quality may not be achieved.
Revision I
(See P.152);
161
Confidential