Technical Specification

General:

• Model: DPU-414 (various suffixes like -50B, -30B-E may exist)
• Printing Method: Thermal serial dot printing (Direct Thermal)
• Color: Monochrome (Black and White)

Printing Performance:

• Number of Dots/Line (H x W): 9 x 320 dots
• Printing Width: 89.6 mm
• Paper Width: 112 mm (+0/-1 mm tolerance)
• Print Speed (Max):
  • 52.5 characters/second (Normal mode)
  • 80 characters/second (Condensed mode)
• Character Matrix (H x W dots): 9 x 7 dots (for normal characters)
• Character Size (H x W mm):
  • 2.5 x 1.9 mm (Normal, 40 columns)
  • 2.5 x 0.9 mm (Condensed, 80 columns)
• Number of Columns: 40 (Normal), 80 (Condensed)
• Resolution:
  • 3.57 x 3.57 dots/mm (90.7 x 90.7 dpi)
  • 7.14 x 3.57 dots/mm (181.4 x 90.7 dpi) – Achieved in double-density bit-image mode.
• Character Types: Extended graphics character set, Alphanumeric, International characters, Katakana character set.
• Service Life: 500,000 lines (based on “8” 40-digit continuous printing on recommended thermal paper)

Memory & Commands:

• Input Buffer: 28 Kbytes
• Command: ESC/P™ conformity

Paper Handling:

• Paper Type: Direct Thermal Paper
• Paper Roll External Diameter (Max): Approximately 48 mm
• Paper Length (Typical): Approx. 28 m (for standard paper thickness)
• Paper Thickness: 64 ± 4 µm
• Cutting Method: Tear bar (manual)

Connectivity:

• Serial Interface: RS-232C, 9-pin D-SUB connector
  • Baud Rate: 75, 110, 150, 300, 600, 1200, 2400, 4800, 9600, 19200 bps
  • Data Bit: 7 bits, 8 bits
  • Parity Bit: Odd, Even, or None
  • Stop Bit: 1 bit
  • Control Method: H/W BUSY, Xon/Xoff
• Parallel Interface: Centronics compatible, 36-pin Amphenol connector
  • Synchronization: Synchronized with STROBE signal
  • Handshaking: Synchronized with ACK and BUSY signal
  • Signal Level: TTL level

Power:

• Power Supply: Optional AC adapter or Ni-MH rechargeable battery pack
• AC Adapter (Optional): Typically 6.5 VDC @ 2.0 A (e.g., Seiko PW-4007-U1-E / PW-4007-E1-E)
• Battery Pack (Optional): Ni-MH battery (e.g., Seiko BP-4005-E), 4.8 V output

Physical & Environmental:

• Dimensions (W x D x H): 160.0 x 170.0 x 66.5 mm (printer unit only, excluding protrusions)
• Mass (Weight): Approximately 580 g (without battery pack and thermal paper roll)
• Operating Temperature: 0°C to 40°C
• Storage Temperature: -20°C to 60°C

Compliance & Standards:

• FCC
• CE
• VCCI
• CCC
• RoHS Compliant (for newer models/production)