Oki 421 Technology, Speed and Print Characteristics, Emulation, Interface and Memory, Accessories

OKI® MICROLINE® 420/421

9-Pin Impact Printers

Built to last, inside and out. Field-proven reliability is just one reason OKI® MICROLINE® impact printers are the most widely-used in North America.1

The performance-optimized power supply of the ML420/421 has been enlarged to easily handle harsh printing conditions—and its energy management capabilities match power expenditures to print-job size, maximizing the life of the 9-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 ML420/421 from damage, even in the toughest working environments.

Performance that’s 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 has a reputation for quality and reliability 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 reliable, affordable ML420/421 can work wonders in virtually any forms-handling application.

Wide-carriage MICROLINE 421

Specifications

Technology, Speed and Print Characteristics

•Printhead: 9-Pin SIDM

•Graphics Resolution: 240 (H) x 216 (V) dpi maximum

•Feed Rate: 4.5 ips (11.4 cm/sec.)

•Print Speed and Character Matrix:

Mode	NLQ	Utility	HSD	SSD
	(10 cpi)	(10 cpi)	(10 cpi)	(12 cpi)
Speed (in cps)	95	380	510	570

Emulation, Interface and Memory

•Emulation: Epson® FX, IBM® ProPrinter®, OKI MICROLINE

•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 (Also available 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: 6

•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 – 24,000 pg./mo. duty cycle ML421 – 17,000 pg./mo. duty cycle

•Printhead Life: 200 million characters

•Ribbon Life: 7.5 million characters

Environmental

•Size (WxDxH):

ML420 – 15.7" x 13.6" x 6.0" (39.8 cm x 34.5 cm x 15.2 cm); ML421 – 21.7" x 13.6" x 6.0" (55.1 cm x 34.5 cm x 15.2 cm)

•Net Weight:

ML420 – 16.4 lb. (7.43 kg); ML421 – 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 420/Parallel/120V		62418701
MICROLINE 420/Parallel/120V/Black		91909701
MICROLINE 420/Parallel/230V		62418702
MICROLINE 421/Parallel/120V		62418801
MICROLINE 421/Parallel/230V		62418802
Accessories
Top-Mount Pull Tractor Kit with acoustic cover:
ML420		70030501
ML421		70030601
Bottom Push Tractor Kit:
ML420		70030701
ML421		70030801
Cut Sheet Feeder		70030101
Roll Paper Stand (ML420 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 (Also 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
Mississauga, Ontario L4W 4M8
Tel: 905.238.4250
Fax: 905.238.4421

www.okidata.com 800.OKI.DATA Printed in the USA. MS11326/0404pdf