1.2.2 Handling Precautions
Incorrect handling may reduce the efficiency of the printer and cause damage. Handle the printer with the
following precautions.
Also, include any necessary precautions so that users handle the printer with care.
Using anything other than the specified thermal paper does not guarantee print quality and life of the
thermal head.
The followings are examples of trouble:
(1) Poor printing quality due to low thermal sensitivity
(2) Abrasion of the thermal head due to paper surface roughness
(3) Printing stuck and unusual noise due to sticking the thermal layer of the thermal paper
to the thermal head
(4) Printing fade due to low preservability of the thermal paper
(5) Electrolytic corrosion of the thermal head due to inferior paper
After the printer has been left not in use for long period of time, the platen could be deformed and
resulted in print quality deteriorated. In this case, feed thermal paper for a while to recover
deformation of the platen. If the thermal head is remained in contact with the platen without thermal
paper for a long time, the platen and the thermal head may be stuck together and cause paper feed
difficulty. If facing this problem, release the platen unit, and set it back again before starting printing.
Never loosen the screws that fasten respective parts of the printer. Loosened screws may reduce
the efficiency of the performance of the printer mechanism.
Do not release the platen unit during printing; otherwise this may reduce the efficiency of the printer
and may cause damage.
Do not apply stress to the platen unit during printing. The print defect may occur.
When setting the platen unit, the reduction gear may interfere with the platen gear and may cause
the platen unit to not be set. In such a case, release the platen unit and set it again.
Never pull out the thermal paper while the platen unit is set. The printer mechanism may become
damaged.
When handling the printer, make sure to use antistatic clothing and to ground yourself to prevent the
thermal head from damaged by static electricity. Especially take care of the thermal head heat
element and the connecting terminal.
Do not hit or scratch the surface of the thermal head with any sharp or hard object. This could
damage the thermal head.
When printing at a high print ratio in a low temperature or high humidity environment, the vapor from
the thermal paper during printing may cause condensation to form on the printer and soil the thermal
paper itself. Prevent the thermal head from a drop of water. It may cause electrolytic corrosion of the
thermal head. If condensed, do not activate electricity until dried.
Connect or disconnect the connecting terminal after turn off the power.
Do not apply stress to the FPC while connecting and disconnecting them. Otherwise the FPC may
become damaged.
Warn users not to pull the thermal paper and not to change the paper eject angle during printing.
Otherwise, the print defect or the paper jam may occur.
In order to prevent the thermal head from damage and to avoid the print defect, warn users not to
touch the thermal head and the sensor directly when handling the printer like replacing thermal
paper.
Do not use the paper roll with glued end or folded end. In case of using such paper roll, replace to a
new one before the end of the paper roll is shown up.
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