2. SUPPLY SPECIFICATIONS SPTM-0152
2.4 PRINT CONDITIONS
2-17
2.4.2 PRINT QUALITY OF QR CODE
Head Resolution Speed 1 cell Criteria
3”/sec 3 dots or more Grade D
6”/sec 4 dots or more Grade D
10”/sec 4 dots or more Readable
203dpi
12”/sec 4 dots or more Readable
3”/sec 3 dots or more Grade D
5”/sec 4 dots or more Grade D
8”/sec 4 dots or more Readable
10”/sec 4 dots or more Readable
300dpi
12”/sec 4 dots or more Readable
2”/sec T.B.D. T.B.D.
3”/sec T.B.D. T.B.D.
4”/sec T.B.D. T.B.D.
5”/sec T.B.D. T.B.D.
600dpi
6”/sec T.B.D. T.B.D.
Model: Model 1, Error correction level: Q
Note: JIS X 05109 (2-D code symbol QR code Basic Specification)
1) QR codes may not be readable depending on the print formats, supplies used or print density fine
adjustment, even if the above conditions are satisfied. The number of dot per 1cell should be
increased, or the print density should be turned down.
● LINE PRINTING
(1) Lines of 3 or more dots are guaranteed. Although 1 or 2 dots can be designated, avoid printing them.
(2) When printing horizontal lines, the combination of paper and ribbon, may cause the printing stick.
Accordingly, may cause the printing disconnection, the bleed printing, etc.
When sticking occurred, try the following items.
This horizontal line changes the border thinning.
Thermal head Tone adjustment change to lower.
Change the combination of paper and ribbon
● PRINT TONE
The print density should be adjusted according to print data and supplies used, with reference to
ATTACHMENT-3. When the serial bar code is regarded as important, turn down the print density (adjust
in the negative (-) direction), and when the horizontal line is regarded as important, turn up the print
density (adjust in the positive (+) direction). If voids occur, turn up the print density, and if reverse thermal
transfer or ribbon wrinkle occurs, turn down the print density.
● DURABILITY
If the printout is used in an environment where its surface may be rubbed, confirm the durability of the
printout before it is used. Basically rubbing the printout surface deteriorates the quality. The supply that is
suitable for that particular environment should be used.
● OTHER CAUTIONS
(1) The thermal paper used for direct thermal printing must not have specifications that exceed Na
+
800
ppm, K
+
250 ppm and Cl
-
500 ppm.
(2) Use of paper containing SiO
2
talc, which may cause abnormal abrasion of the print head protection
layer, should be avoided.
(3) If the paper and ribbon are left under pressure of the print head for a long period of time, the ribbon
may stick to the paper, which causes a problem at a start of printing. In addition, there is the case that
a pressure welding trace (smudge) of the ribbon occurs at the time of a printing start and the end by a
kind of the ribbon.
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