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參數(shù)資料
| 型號： | 09-ELM205-ST |
| 英文描述： | PRINTER MECH. EASY LOAD |
| 中文描述： | 打印機(jī)機(jī)械。易裝卸設(shè)備 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 160K |
| 代理商： | 09-ELM205-ST |
ELM 205
-
Technical reference -
Rev. G -
10
Advanced Printing Systems
3.7.
Thermistor
When performing continuous printing, it is recommended that the supply energy be reduced so
that the substrate temperature monitored through the thermistor will remain below the maximum
temperature shown in section 3.2.
The thermistor specification is the following:
- R25, resistance at 25°C:
30
KOhms +/- 5% at 25°C
- B value:
3950
KOhms +/- 2%
- Operating temperature:
-20°C to +80°C
- Time constant:
Max. 30 sec (in the air)
Then the resistance value, R, versus temperature, T (in °C), is given by the formula:
R( T ) = R 25* e
B*(
1
T+273
-
1
25+273
)
4.
Stepper motor
4.1.
Stepper motor Timing
The paper feed pitch for stepper motor is 2 steps for one dotline (0,125 mm). For good print
quality it is advised to keep the current into the windings between two successive dotlines.
The timing diagram is then as follows:
PHASE 1
PHASE 2
PHASE 3
PHASE 4
DOTLINE
There are four different positions for the stepper motor. The driving is bipolar and can be
achieved with circuits like Rohm BA6845FS, Sanyo LB1836 or LB1838 or Hitachi HA13421.
Please refer to the IC’s data sheet for further information. It is recommended not to exceed 0.2v
like voltage drop in the stepper motor driver circuit.
Coil resistance is 12 Ohms, rated current is 300 mA (5 volts) per phase while feeding at
10mm/s.
In case of high voltage or continuous printing application, contact APS for current application
circuitry.
3
1
2
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