Epson TM-U950 Technical Manual

Rev. A Features and General Specifications 1-15
TM-U950/U950P Technical Manual
Drive voltage
24 V DC ± 10% (including voltage drop caused by drive transistor)
Winding resistance
9 Ω ± 7% at 25
°
C (77
°
F), per phase
Current consumption (per motor)
Peak current: 1.5 A in worst case
Average current: 550 mA at rated speed
Hold current: 150 mA± 8% per phase
Drive frequency
Standard mode: 1400 pps (pulse interval 714 µs)
Copy mode: 1200 pps (pulse interval 834 µs)
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: 9
Drive voltage: 24 V DC ± 10% (including voltage drop caused by drive
transistor)
DC resistance: 6.65 Ω ± 4% at 25°C (77°F)
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: Microswitch
Voltage: 5 V DC ± 5%
Output level: Low when near-end is detected
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: Microswitch
Switch rating: 10 to 100 mA, 5 V DC (resistive load)
Contact condition: On when paper is present
(*) If the paper roll sensor detects the “no paper” condition while the cover is open, semi-
automatic loading can be performed by inserting the paper roll into the paper path.
CONFIDENTIAL

Epson TM-U950 Specifications

General

Print speed	18.6 ips
Character size	1.3 x 3.1 mm
Print technology	Dot matrix
Paper dimensions	210 x 297 mm
Dimensions (WxDxH)	251 x 298 x 194.5 mm
Electromagnetic compatibility	VCCI, FCC, CE
Safety	UL, CSA
Country of origin	China
Mean time between failures (MTBF)	180000 h
Serial interface	Yes
Standard interfaces	RS-232C
Weight (imperial)	12.3 lbs
Pallet width	1200 mm
Pallet height	1000 mm
Pallet length (UK)	2250 mm
Quantity per pallet	24 pc(s)
Quantity per pallet (UK)	36 pc(s)
Quantity per pallet layer	4 pc(s)
Harmonized System (HS) code	84433210
Quantity per pallet layer (UK)	6 pc(s)
Package depth	425 mm
Package width	360 mm
Package height	330 mm
Package weight	7196 g
Quantity per pack	1 pc(s)

Weight and Dimensions

Depth	298 mm
Width	186 mm
Height	195 mm