Technology, Speed and Print Characteristics, Description

OKI® MICROLINE® 490/491

24-Pin Impact Printers

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. These are just a few of the reasons why OKI MICROLINE Impact printers are the most widely used in North America.1

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.

Wide-carriage MICROLINE 491

Specifications

Technology, Speed and Print Characteristics

•Printhead: 24-Pin SIDM

•Graphics Resolution: 360 (H) x 360 (V) dpi maximum

•Feed Rate: 4.5 ips (11.4 cm/sec.)

•Print Speed and Character Matrix:

Mode	Letter Quality	Utility Hi-Speed Draft Utility
	(12 cpi)	(12 cpi)	(10 cpi)	(15 cpi)
Speed (in cps) 126		315	420	475

Emulation, Interface and Memory

•Emulation: Epson® LQ, IBM® ProPrinter®, IBM AGM, IBM XL24

•Interface: Standard – IEEE Parallel and USB;

Optional – RS-232C Serial and Ethernet® via OkiLAN® 6120 i 10/100 Base-T Internal Print Server (no AC power adapter required); Twin-ax/Co-ax through 3rd Party

•Memory: 128K

Compatibility

•Operating Systems: Windows® XP, 2000, 98/95, 3.x and NT® 4.0; MS-DOS®

Paper Handling

•Paper Input: Single-part, Multi-part, Continuous forms, Cut sheet, Index stock, Envelopes, Labels

•Number of Copies: 5

•Thickness: 0.017" (0.43 mm) maximum

•Paper Feeding: Rear Push and Friction Feed

•Options: Bottom Push Tractor, Top Pull Tractor, Cut Sheet Feeder, Roll Paper Stand

Warranty and Reliability

•Limited Warranty: 3-Year parts and labor, 2-Year printhead

•MTBF: 20,000 hours (25% duty cycle/35% page density)

•Reliability:

ML420 – 20,000 pg./mo. duty cycle

ML421 – 12,000 pg./mo. duty cycle

•Printhead Life: 200 million characters

•Ribbon Life: 7.5 million characters

Environmental

•Size (WxDxH):

ML490 – 15.7" x 13.6" x 6.0" (39.8 cm x 34.5 cm x 15.2 cm); ML491 – 21.7" x 13.6" x 6.0" (55.1 cm x 34.5 cm x 15.2 cm)

•Net Weight:

ML490 – 16.4 lb. (7.43 kg); ML491 – 21.2 lb. (9.6 kg)

•Acoustic Noise: 56 dBA

•Power Requirements:

120V Model: 120 VAC +6%, -15%;

230V Model: 230 VAC +15%, -14%

Ordering Information

Description	Part Numbers
MICROLINE 490/Parallel / 120V	62418901
MICROLINE 490/Parallel / 230V	62418902
MICROLINE 491/Parallel / 120V	62419001
MICROLINE 491/Parallel / 230V	62419002
Accessories
Top-Mount Pull Tractor Kit with acoustic cover:
ML490	70030501
ML491	70030601
Bottom Push Tractor Kit:
ML490	70030701
ML491	70030801
Cut Sheet Feeder	70030101
Roll Paper Stand (ML490 only)	70023301
RS-232C Serial Interface (19.2K baud max.)	70012801
OkiLAN® 6120 i 10/100 Base-T Ethernet
Internal Print Server	70046501
OkiLAN® 6020e 10/100 Base-T Ethernet
External Print Server	70036001
OkiLAN 6010e 10 Base-T Ethernet
External Print Server	70034401
Self-inking Ribbon Cartridge	42377801
Co-ax Adapter	70047201
Twin-ax/Co-ax (Available through Third Party.
Call 1-800-OKI-DATA.)

OKIcare® Overnight Exchange Warranty Extensions 3

	U.S.	Canada
OKI ML400 Series 1-Yr. Warranty Ext.	58264901	58263111
OKI ML400 Series 2-Yr. Warranty Ext.	58264902	58263112

OKIcare® Depot Warranty Extensions 3

	U.S.	Canada
OKI ML400 Series 1-Yr. Warranty Ext.	58264701	58265511
OKI ML400 Series 2-Yr. Warranty Ext.	58264702	58265512
Upgrade to 3-Yr. Overnight Exchange	58264801	58264811

For more information on OKI Impact Printers and sup- plies, including OKIcare® Extended Service Programs:

1-800-OKI-DATA (800-654-3282).

1Q4 2003 IDC Quarterly Tracker and Evans Research.

23-year standard warranty parts and labor /2-year printhead.

3Available in the U.S. and Canada only.

All specifications subject to change without notice.

© 2004 Oki Data Americas, Inc. OKI Reg. T.M., M.D., M.R., MICROLINE, OkiLAN, OKIcare Reg. T.M., Oki Electric Industry Co., Ltd. 7-Day/24-Hour logo T.M., Oki Data Americas, Inc. Epson Reg. T.M., Seiko Epson Corp. IBM, ProPrinter Reg. T.M., International Business Machines, Inc. Windows, Windows NT, MS-DOS Reg. T.M., Microsoft Corp. Ethernet Reg. T.M., SCO. Energy Star Reg. T.M., U.S. EPA. USB-Logo T.M. Universal Serial Bus Implementers Forum, Inc.

To contact Oki Data Americas, Inc.
In USA: 2000 Bishops Gate Blvd.	In Latin America and Mexico:
Mount Laurel, NJ 08054-4620	2000 Bishops Gate Blvd.
Tel: 800.OKI.DATA (800.654.3282)	Mount Laurel, NJ 08054-4620
Fax: 856.222.5320	Tel: 856.231.0002
In Canada: 2735 Matheson Blvd. East	Fax: 856.222.5071
In Canada: 2735 Matheson Blvd. East
Mississauga, Ontario L4W 4M8
Tel: 905.238.4250
Fax: 905.238.4421

www.okidata.com 800.OKI.DATA

Printed in the USA.

MS 11327/0404pdf