Epson LQ-780 Dot Matrix Printer

Description

Printing Technology

• Type: Narrow-carriage, flatbed, 24‑pin impact dot matrix

• Print Direction: Bi‑directional with logic seeking

• Supported Emulations: ESC/P2 and IBM PPDS

• Control Panel: 4 buttons and 6 LEDs

Printing Performance

• High‑Speed Draft (10 cpi): Up to ~487 chars/sec

• Draft (10 cpi): Around ~366 chars/sec

• Letter Quality (10 cpi): About ~121 chars/sec

Copying & Columns

• Copy Capability: Original + up to 6 copies (7-part forms)

• Printable Columns per Line: 106 columns (10 cpi)

Fonts, Character Sets & Barcodes

• Character Sets: 15 total – includes Italic, PC437, PC850, PC858, ISO‑8859‑15, Roman 8, among others

• Bitmap Fonts: Includes Courier, Draft, Prestige, Roman, Script, OCR‑B, Orator, Orator‑S, Script C (mix of pitches and proportional styles)

• Scalable Fonts: 4 options – Roman, Roman T, Sans Serif, Sans Serif H (from ~8 pt to 32 pt in 2‑pt steps)

• Text Resolution: 360 × 180 dpi

• Barcodes Supported: CodaBar (NW‑7), Code 39, Code 128, EAN‑13/EAN‑8, Industrial & Matrix 2‑of‑5, Interleaved 2‑of‑5, POSTNET, UPC‑A/E

Paper & Media Handling

• Paper Feed Options: Manual insertion (front front-out), push tractor (rear in/front out)

• Media Types Supported:

  • Single and multi-layer cut sheets

  • Continuous forms

  • Roll paper

  • Envelopes

  • Cardboard

• Media Sizes & Thickness Ranges:

  • Single sheet: Width 90–305 mm, Length 70–420 mm; Thickness 0.065–0.15 mm

  • Multi-part forms: Thickness 0.12–0.49 mm

  • Continuous paper: Thickness 0.12–0.49 mm

• Line Spacing: 1/6″ (≈4.23 mm), programmable in approximate increments of 1/360″ or 1/8″

Reliability & Ribbon Yield

• MTBF: Around 20,000 power-on hours

• Print Head Life: 400 million strokes per wire

• Ribbon Yield: Up to 10 million characters in letter quality mode

Connectivity & Memory

• Standard Interfaces: Bi-directional Parallel (IEEE‑1284) and USB 2.0 (Full Speed)

• Memory Buffer: 128 KB

Size, Weight & Power

• Dimensions: Approximately 480 × 301 × 211 mm (W × D × H)

• Weight: About 6.7 kg

• Power Consumption: Around 46 W (operating) and 8.3 W (standby)

• Electrical Input: AC 198–264 V; 50–60 Hz

Environmental & Acoustic

• Operating Temperature: 5 °C to 35 °C

• Operating Humidity: 10% to 80% RH (non‑condensing)

• Noise Level: Approximately 59 dB(A) during operation