Electrical characteristics, Thermal print head, Internal ac powered – TransAct Technologies ITHERM 280 User Manual

Page 28: External powered dc

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Specifications and Requirements

iTherm

®

280 Programmer’s Guide

Page 26

Rev C

28-07764

Electrical Characteristics

Internal AC Powered

The iTherm® 280 Printer is designed to be AC self-powered in domestic and
international markets. The printer is equipped with a universal input power supply that is
designed to operate worldwide without modification.

Supply

Voltage

Rating

(VAC)

Supply

Voltage

Range

(VAC)

Frequency

(Hz)

Rated Power

(watts)

Idle Current

(amps)

Printing Current

(amps)

100-240

90-264

47 – 63

45

.1A @ 120VAC

.05 A @ 240VAC

1.4 A @ 120VAC

.7 A @ 240VAC

Table 1 Standard Power Input Requirements

External Powered DC

Optionally, the iTherm® 280 Printer can be operated with 24-volt DC power supplied
from a host terminal or external supply. Connection to this printer version is made via a
three-pin Hosiden type connector.

Supply

Voltage

Rating

(VDC)

Supply

Voltage

Range

(VDC)

Frequency (Hz)

Idle

Current

(amps)

Current (amps)

24

-5+10%

22.8 –

26.4

2

DC

0.125 A

2.0 A (Cash Drawer Fire)

3.5 A (Printing maximum for < 1 minute)

4.8 A Peak (< 167 msec.)

Table 2 Power Input Requirements with the 24-volt DC Power

The iTherm® 280 can be configured to operate with various power supplies. If a DC
power supply with less capability is used, the printer must be configured for reduced
power and the printer will print slower.

Thermal Print Head


Thermal Print Head Overview:

Number of heat elements:

640

Heat element pitch:

0.125 mm (8 dots/mm.)

Print width:

80 mm. +/- 0.2 mm.

Pulse Life:

100 million pulses

Abrasion Life:

100 km.

Vertical dot pitch

0.264 mm (0.0104 inch) or 96 DPI

Operating Temperature

5-45 degrees C

Humidity:

10-90 % RH (non-condensing)

Operation Precautions:

Do not print without paper.

Clean the head with ethyl-alcohol after power is removed from the printer. This will

remove foreign particles or paper dust which may degrade print quality.

Be sure to set the paper width in the printer’s configuration to agree with the paper

being used (58 or 80 mm width).

2

For DC powered printers, the cash drawer is supplied directly from the DC input supply. The

cash drawer requirements may affect the allowable range of voltages.

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