Citizen CL-E700 Series ユーザーズマニュアル

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Chapter 3 Printer Adjustments
Cleaning
Wipe off any foreign matter such as media dust, dirt and adhesive 
substances built up around the printhead with the head cleaning pen 
(head cleaner) provided, and use a soft cloth soaked in ethyl alcohol for 
the platen etc.
It is particularly important to clean the thermal printhead after printing 
on thermal media for long periods, which will guarantee the print quality 
and extend the life of the thermal printhead.
Note: Always use the head cleaner when cleaning the thermal printhead.
Head cleaner
Thermal printhead
Ribbon guide roller
Platen
Guide shaft
Do not use any solvent other than ethyl alcohol. Solvents such as 
benzene, acetone and thinner will dissolve plastic parts and destroy 
the thermal printhead, platen and much of the printer!
Try to avoid using "excessive amounts" of ethyl alcohol to clean the 
platen. Excessive use will harden the platen surface prematurely.
 Caution