Epson TM-U950 Technical Manual page 26

CONFIDENTIAL
Drive voltage
24 V DC ± 10% (including voltage drop caused by drive transistor)
Winding resistance
9 Ω ± 7% at 25
Current consumption (per motor)
Peak current:
Average current:
Hold current:
Drive frequency
Standard mode:
Copy mode:
Drive principle
Constant-current chopper drive, 2-2 phase induction
Carriage feed pitch
0.3386 mm (1/75") per pulse
Print head unit (print solenoids)
Number of solenoids:
Drive voltage:
DC resistance:
Near-end sensors (journal, receipt)
A sensor is provided for the receipt and journal paper roll respectively. The sensors check the
diameter of each roll and activate the near-end alarm when the diameter falls below a user-
determined value.
Sensor type:
Voltage:
Output level:
Paper roll sensors (journal, receipt) (*)
A sensor is provided in the paper path (receipt and journal side, respectively) of the printer
mechanism. These sensors check for the presence of paper, and accordingly control loading of
the paper roll.
Sensor type:
Switch rating:
Contact condition:
(*) If the paper roll sensor detects the "no paper" condition while the cover is open, semi-
Rev. A
C (77 F), per phase
° °
automatic loading can be performed by inserting the paper roll into the paper path.
1.5 A in worst case
550 mA at rated speed
150 mA± 8% per phase
1400 pps (pulse interval 714 µs)
1200 pps (pulse interval 834 µs)
9
24 V DC ± 10% (including voltage drop caused by drive
transistor)
6.65 Ω ± 4% at 25°C (77°F)
Microswitch
5 V DC ± 5%
Low when near-end is detected
Microswitch
10 to 100 mA, 5 V DC (resistive load)
On when paper is present
Features and General Specifications 1-15
TM-U950/U950P Technical Manual