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Oki Data > 
Item#: 9SIA91N3HB2854

OKIDATA MICROLINE 491 (62419001) 360 x 360 dpi 24 pins Dot Matrix Printer

  • 24 pins
  • Maximum Mono Print Speed (cps): 475 cps
  • Maximum Print Resolution: 360 x 360 dpi
  • Standard Memory: 128 KB
  • Parallel Port, USB

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

A good blend of performance, quality, reliability, and affordability, the ML491 24-pin Dot Matrix Printer lets you easily produce letter-quality type and high-resolution graphics for the office and the executive suite! It’s specially engineered for dedicated form printing in the most demanding point-of-sale, automation, and utility environments.

This high-performance device utilizes the unequaled performance technology – like a three-piece top cover, an internal cooling fan, and additional feed rollers. It boasts exceptional paper-handling versatility and the unique OKI closed-loop feedback system, a fast print speed of up to 475 cps, and 400-million character printhead life, ensuring fast, accurate, and reliable printing result every time. In addition, it’s extremely durable and user-friendly. Its small footprint makes it perfect for retail countertops.

  • newegg Unequaled performance technology The ML491 sports an array of innovative features, giving it a strong edge over its predecessors as well as the competition. The three-piece top cover provides easy access and unsurpassed break resistance. An internal cooling fan provides continuous airflow for the printhead, maximizing throughput productivity for long, unattended print jobs. Additional feed rollers provide precise form handling and printed-character placement accuracy.
  • newegg Value that goes the distance The ML491 printers run the gamut of paper types and envelopes at lightning speed—reaching 475 cps in Utility/Draft mode and 105 cps in Letter-quality. Its rugged printhead (200 million-character average life expectancy) is made up of powerful samarium magnets and stored-energy pins, delivering precise, sharp characters all the way through to the last page of a five-part form. The exclusive OKI closed-loop feedback system ensures character-placement accuracy.
  • newegg Exceptional paper-handling versatility The expandable head gap accommodates multi-part forms and cut-sheet stock, including labels and stiff index stock. The advanced zero-tear feature accurately positions continuous forms for a clean tear at the perforation, eliminating wasted stock. You can get perfect results with single sheets, index stock, labels, and envelopes – all without jams or smears.
  • newegg Built to last, inside and out The ML491’s performance-optimized power supply has been enlarged to easily handle harsh printing conditions. Its energy-management capabilities match power expenditures to the print-job size, maximizing the life of the 24-pin printhead and other components. A long-lasting rack-and-pinion drive system ensures print quality longer than belt or cable systems. And the ergonomically designed, impact-resistant chassis protects the ML491 from damage, even in the toughest working environments.
  • newegg Easy to use Controls are conveniently placed on the front panel for fast access. The automatic loading of continuous and cut stock makes every print job easier, and the design of the internal sheet separator enables easy loading of tractor-fed paper into the rear push tractor.

Learn more about the Oki Data 491 (62419001)


491 (62419001)


Print Speed
Super Speed Draft (cps) 475
High Speed Draft (cps) 420
Utility Speed (cps) 315
Letter Quality Speed (cps) 126
Max Resolution
360 x 360 dpi
Number of Pins
24 pins
Printhead Life
200 million
Ribbon Life
7.5 million
Feed Rate
4.5 ips
Epson LQ, IBM ProPrinter IBM AGM, IBM XL24

Media Handling

Media Type
Single-part, Multi-part, Continuous forms, Cut sheet, Index stock, Envelopes, Labels


Noise Level
In Operating Mode: 56 dB
Power Requirements
Power Voltage: 120v or 220v


USB Ports
LPT Ports
COM Ports
Other Ports
Network Ports: Optional


Windows Compatible
Windows XP, 2000, 98/95, 3.x and NT 4.0

Dimensions & Weight

21.7" x 13.6" x 6.0"
21.2 lbs.
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 0 day
  • Read full details

Customer Reviews of the Oki Data 491 (62419001)

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  • Thomas M.
  • 7/18/2014 12:07:15 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

2 out of 5 eggsNot compatible with old netwrok card

Pros: I worked with the matrix dot system for the past four years never had a problem until now

Cons: I use the matrix dot system on a daily bases to print manifest and setup each manifest up for daily routes. Printer not working according set me back!!

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