SANEI ELECTRIC SK1-21A, Technical Manual

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３５
SK1-21A/31A
4- 6
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Adjusting printing density
Paper sensitivity varies by type of thermal paper. Choose the right density to realize best printing
quality and reliable printing. (The excess heating of the thermal head may cause the reduction of
head life and contamination)
Allows setting density form 60 to 150
％
. The default value from the factory is 100% for maintaining
proper printing quality. Details of the adjustment method are written in
“
Command systems
DC2 ～ (Set print density).
Printing density
Part No. Maker. Density
TF50KS-E2D Nippon Paper
100
％
TF50KS-EY Nippon Paper
100
％
TF11KS-ET Nippon Paper
120
％
F230AA Mitsubishi
100
％
HP-220A Mitsubishi
100
％
4- 7
．
LED display
When an error occurs, the STATUS LED lights or blinks depending on the type of errors as follows.
1. No error signal is detected.
●
Standby
It is possible to print and the printer waits for printing data by ONLINE.
●
Initialization
Initialize printer memories. The printer goes OFFLINE during initialization and
status LED blinks. After completing initialization, the printer goes standby.
2. Auto-recovery error
●
Temperature error
The print head temperature is increased when heavy-duty printing is continuous. If the print
head temperature exceeds70 degrees C, operation of the print head is automatically
stopped to prevent overheating. The status LED blinks and the printer goes OFFLINE.
The printer resumes printing when the head temperature falls to 60 degrees C or lower.
● Paper empty
Detect the paper empty through near end sensor and paper empty sensor.
The status LED blinks at paper near end and keeps the printer ONLINE.
After the paper runs out and the printer detects paper empty, the status LED turns On
and the printer goes OFFLINE.
●
Print head open
When the print head is lifted up, the status LED turns ON and the printer goes OFF-LINE.
After closing the print head, the printer goes on standby.