Epson LX-300+II RTP - Printhead

EPSON LX-300+II/300+II RTP/1170II Revision D
Operating Principles Printer Mechanism 45
2.2.1 Printhead
The table below shows the printhead specifications.
Figure 2-3. Wire Configuration
2.2.1.1 Buzzer Function
This printhead also works as a buzzer. The table below shows buzzer specification.
Table 2-2. Printhead Specifications
Item Specification
Number of wires 9
Diameter of wire φ0.29 mm
Wire configuration
See Figure 2-3 "Wire Configuration".
Note: The figure is seen from the back of the head
facing printing side.
Direct current coil resistance 33.3 ±3.3 Ω (25°C)
Head drive method Rated voltage drive
Head drive voltage 35+2.1/-3.5 V
Peak current
• Normal: 0.75 A (Standard)
• Copy: 0.85 A (Standard)
1.0 A (Maximum)
Head drive frequency
• Normal: 1350Hz or less
• Copy: 1350Hz or less
Head life
• Black ribbon: 0.2 billion strokes/ wire or more
• Color ribbon: 0.1 billion strokes/ wire or more
Environmental condition
• Temperature: 5 to 55°C
• Humidity: 10 to 85%
Table 2-3. Buzzer Function -- Specification
Item Specification
Head voltage 35 +2.1 / -3.5 V
Drive frequency 2kHz, 1.5kHz