From the Manufacturer
OKI MICROLINE 491 Serial Impact Dot Matrix Printer
High-volume versatility in forms and correspondence.
Whether you need regular output of continuous multi-part forms, fine business correspondence—or combinations of both—24-pin OKI® ML490/491 printers are the single solution. They handle the printing needs of the most demanding environments—including point-of-sale, automation and utility applications such as wholesale or retail sales counters, financial departments, and manufacturing or ware-house sites. Yet they also produce letter-quality type and high-resolution graphics for the office and executive suite.
Unequaled performance technology.
The ML490/491 sport features that give them a strong edge over their predecessors as well as the competition:
• An internal cooling fan provides continuous airflow for the printhead— maximizing throughput productivity for long, unattended print jobs
• Additional feed rollers provide precise forms handling and printed-character placement accuracy
• 3-piece top cover provides easy access and unsurpassed break resistance.
Fast, with finesse.
ML490/491 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. Their rugged printhead (200 million-character average life expectancy) is made up of powerful samarium magnets and stored-energy pins that deliver precise, sharp characters all the way through to the last page of a 5-part form.
The patented OKI closed-loop feedback system assures character placement accuracy. And a zero-tear feature accurately positions continuous forms for a clean tear at the perforation to eliminate wasted stock.
Sturdy and sophisticated.
Field-proven reliability is just one reason OKI MICROLINE printers are the most widely-used impact printers in North America.1 The rugged, reliable OKI ML490/491 printers are sure to win you over, too!
Built to last, inside and out.
The performance-optimized power supply of the OKI® MICROLINE® 490/491 has been enlarged to easily handle harsh printing conditions. Its energy management capabilities match power expenditures to 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 ML490/491 from damage, even in the toughest working environments.
All this performance is user-friendly.
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.
OKI provides the edge in performance no competing printer can claim—and backs it with 3 years of warranty coverage 2 and a network of authorized OKI Dealer Service Centers and Service Depots.
The high-quality, highly reliable and highly affordable ML490/491 Impact printers from OKI. Put them to work in your office or behind the counter—and watch them drive your productivity to new limits while they improve the look of your forms printing.
1 2002 NPD Intellect and Evans Research Market Share Data.
23-year standard warranty parts and labor /2-year printhead.
|Print Speed And Quality|
|Super Speed Draft (cps)||475|
|High Speed Draft (cps)||420|
|Utility Speed (cps)||315|
|Near Letter Quality Speed (cps)||N/A|
|Letter Quality Speed (cps)||126|
|Number Of Colors||1|
|Maximum Graphics Resolution (dpi)||360 x 360|
|Fonts and Bar Codes|
|Resident Scalable Fonts||Yes|
|Resident Bar Code Fonts||Yes|
|No. Of Copies||5|
|Automatic Paper Forms Loading||Yes|
|Short Tear Off||Yes|
|Zero Tear Off||Yes|
|Pin Feed Platen||N/A|
|Top Pull Tractors||Optional|
|Paper Feed Rate (inch per second)||4.5|
|Cut Sheet Feeder Option||Optional|
|Roll Paper Stand Option||Optional|
|Number of Pins||24|
|Expanded Head Gap||Yes|
|Printhead Life (characters)||400 million|
|Memory Buffer Size||128K|
|Monthly Workload (pages)||12,000|
|Operating / Physical Specifications|
|Noise Level In Operating Mode (dBA)||56|
|Ribbon Life (characters)||7.5 million|
|Power Voltage||120v or 220v|
|EPA Energy Star Compliance||Yes|
|Dimensions Of Narrow Carriage w/out Box|
(W x D x H) (inches)
|Dimensions Of Wide Carriage w/out Box|
(W x D x H) (inches)
|21.7 x 13.6 x 6.0|
|Weight Of Narrow Carriage w/out Box (lb.)||N/A|
|Weight Of Wide Carriage w/out Box (lb.)||21.2|
|Front Panel Direct Access Controls||Yes|
|Front Panel Limited Function Mode||Yes|
|Warranty||3-year standard warranty parts and labor; 2-year printhead|
|Toll Free Telephone Support (hours/days)||24 / 7|
|Emulations||Epson® LQ, IBM® ProPrinter®, IBM AGM, IBM XL24|
|OS Compatibility||Windows® XP, 2000, 98/95, 3.x and NT® 4.0; MS-DOS®|
|MICROLINE 490||MICROLINE 490n||MICROLINE 491||MICROLINE 491n|
|Print Speed and Quality|
|Super Speed Draft (cps)||475||475||475||475|
|High Speed Draft (cps)||420||420||420||420|
|Utility Speed (cps)||315||315||315||315|
|Letter Quality Speed (cps)||126||126||126||126|
|Number of Colors||1||1||1||1|
|Maximum Graphics Resolution (dpi)||360 x 360||360 x 360||360 x 360||360 x 360|
|Fonts and Bar Codes|
|Resident Scalable Fonts||Yes||Yes||Yes||Yes|
|Resident Bar Code Fonts||Yes||Yes||Yes||Yes|
|No. of Copies||5||5||5||5|
|Automatic Paper Forms Loading||Yes||Yes||Yes||Yes|
|Short Tear Off||Yes||Yes||Yes||Yes|
|Zero Tear Off||Yes||Yes||Yes||Yes|
|Top Pull Tractors||Optional||Optional||Optional||Optional|
|Paper Feed Rate [...]||4.5||4.5||4.5||4.5|
|Cut Sheet Feeder Option||Optional||Optional||Optional||Optional|
|Roll Paper Stand Option||Optional||Optional||Optional||Optional|
|Number of Pins||24||24||24||24|
|Expanded Head Gap||Yes||Yes||Yes||Yes|
|Printhead Life [...]||400 million||400 million||400 million||400 million|
|Memory Buffer Size||128K||128K||128K||128K|
|Monthly Workload [...]||20,000||20,000||12,000||12,000|
|Noise Level in Operating Mode (dBA)||56||56||56||56|
|Ribbon Life [...]||7.5 million||7.5 million||7.5 million||7.5 million|
|EPA Energy Star Compliance||Yes||Yes||Yes||Yes|
|Dimensions of Narrow Carriage [...]||15.7 x 13.6 x 6.0||15.7 x 13.6 x 6.0||N/A||N/A|
|Dimensions of Wide Carriage [...]||N/A||N/A||21.7 x 13.6 x 6.0||21.7 x 13.6 x 6.0|
|Weight of Narrow Carriage [...]||16.4||16.4||N/A||N/A|
|Weight of Wide Carriage [...]||N/A||N/A||21.2||21.2|
|Front Panel Direct Access Controls||Yes||Yes||Yes||Yes|
|Front Panel Limited Function Mode||Yes||Yes||Yes||Yes|
|Warranty||3-year standard warranty parts and labor; 2-year printhead||3-year standard warranty parts and labor; 2-year printhead||3-year standard warranty parts and labor; 2-year printhead||3-year standard warranty parts and labor; 2-year printhead|
|Toll Free Telephone Support [...]||24 / 7||24 / 7||24 / 7||24 / 7|
|Emulations||Epson® LQ, IBM® ProPrinter®, IBM AGM, IBM XL24||Epson® LQ, IBM® ProPrinter®, IBM AGM, IBM XL24||Epson® LQ, IBM® ProPrinter®, IBM AGM, IBM XL24||Epson® LQ, IBM® ProPrinter®, IBM AGM, IBM XL24|
|OS Compatibility||Windows® XP, 2000, 98/95, 3.x and NT® 4.0; MS-DOS®||Windows® XP, 2000, 98/95, 3.x and NT® 4.0; MS-DOS®||Windows® XP, 2000, 98/95, 3.x and NT® 4.0; MS-DOS®||Windows® XP, 2000, 98/95, 3.x and NT® 4.0; MS-DOS®|
|Whether you need regular output of continuous multi-part forms, fine business correspondence-or combinations of both-24-pin OKI ML491 printers are the single solution. They handle the printing needs of the most demanding environments-including point-of-sale, automation and utility applications such as wholesale or retail sales counters, financial departments, and manufacturing or ware-house sites. Yet they also produce letter-quality type and high-resolution graphics for the office and executive suite.|
|Maximum Mono Print Speed (cps):||475 cps|
|Maximum Print Resolution:||360 x 360 dpi|
|Number of Pins:||24-pin|
|Standard Memory:||128 KB|
|Media Type:||Cut Sheet|
|Media Type:||Roll Paper|
|Media Handling:||Pull Tractor Top|
|Media Handling:||Push Tractor|
|Language Emulation:||Oki Microline|
|Language Emulation:||IBM Graphics ProPrinter|
|Power Source:||AC Supply|
|Input Voltage:||110 V AC|
|Weight (Approximate):||21.20 lb|
|Limited Warranty:||3 Year|
Product images may differ from actual product appearance.