OKI Microline 3320 vs Epson LQ-590II

Detailed Technical Comparison & Buying Guide

OKI Microline 3320 OKI Microline 3320
VS
Epson LQ-590II Epson LQ-590II

OKI Microline 3320

✅ High-speed and built like a tank for industrial use.
❌ Outdated interface requiring adapters for modern PCs.

Epson LQ-590II

✅ Excellent build quality.
❌ Slightly higher running costs.
Feature OKI Microline 3320 Epson LQ-590II
Number of Pins 9 Pins 24 Pins
Printing Columns 80 Columns 80 Columns
High Speed Draft 435 cps 550 cps
Draft Speed 387 cps N/A
Letter Quality Speed N/A 121 cps
Copy Capability 1 original + 4 copies 1 original + 6 copies
Mean Time Between Failure 10,000 Hours 25,000 Hours
Ribbon Life 3 Million Characters 5 Million Characters
Print Head Life 200 Million Characters N/A
Paper Feed Path Top, Bottom, Rear N/A
Control Emulations Epson FX, IBM ProPrinter, OKI Microline N/A
Noise Level 57 dB(A) 55 dB(A)
Interfaces USB, Parallel USB 2.0, Parallel

⚖️ Expert Verdict

The OKI 3320 is a durable 9-pin staple, but the Epson LQ-590II is a significantly more advanced 24-pin tool. The Epson is faster, quieter, and produces much higher resolution text that's actually legible for fine print on contracts. While the OKI is a reliable old tank, the Epson LQ-590II wins for its superior character quality and modern connectivity options. For a professional operation that cares about its output quality, the Epson is the clear winner for its refined impact technology.

What Owners Are Saying?

OKI Microline 3320

OldSchool_Len
"Absolute unit of a warehouse printer. We've had one running for a decade and it’s still going. A bit of a faff to set up on a modern PC, but for continuous forms, it’s a legend."

Epson LQ-590II

Rachel
"Fast as lightning for an impact printer. The MTBF (mean time between failure) on these is massive. Strategic choice for our heavy-duty billing cycles. Very sorted."

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