29 30
The reflectivity of the black mark printed should be less than
10%, and the others should be more than 90%.
Explanation for printing area:
Printing area is shown as above figure.
n1
：
valid printing area.
n2
：
distance from the first printing line to the paper tearing
line. n2=15mm.
Chapter 4 Cleaning Printhead
After the printer is used some duration, the character printed
out might be not clear, this means the printhead need be
cleaned according to following procedure:
(1) Must take out the battery before cleaning.
(2) Open the cover of the printer.
(3) Use a cleaned tampon dipped a few alcohol to brush off the
dirts on the surface of the printhead heating elements.
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Mu
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remember don
remember don
remember don
remember don
’
t use sandpaper, knife, or
t use sandpaper, knife, or
t use sandpaper, knife, or
t use sandpaper, knife, or
screwdriver to scrape the printhead! Otherwise the
screwdriver to scrape the printhead! Otherwise the
screwdriver to scrape the printhead! Otherwise the
screwdriver to scrape the printhead! Otherwise the
printhead will be permanent damage.
printhead will be permanent damage.
printhead will be permanent damage.
printhead will be permanent damage.
(4) After cleaned printhead don’t close the cover until the
alcohol on the printhead is dry completely.
(5) Install the battery and do self testing to inspect the printing
effect.
(6) If the printing effec is not good please contact with
professional maintenance man.
(7) Don’t touch the printhead and motor while just finished
printing to avoid hand is burned.
