Oki MICROLINE 421 Dot Matrix Printer - 62418801

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Product Overview

The OKI wide-carriage counterpart ML421 is a quantum leap forward in Impact printer performance. Engineered for dedicated forms printing in the most demanding point-of-sale, automa-tion and utility environments, ML421 printers are right at home in applications such as retail sales counters, medical facilities, automotive rental and repair shops, airline counters, financial departments and manufacturing sites. Its print speed and versatile paper handling make it ideal for the office, too.


Manufacturer Okidata
Mfg Part# 62418801
SKU 10334528
UPC 051851450292
UPC 14 00051851450292
Parallel Port Yes
Product Type Dot Matrix Printer
Manufacturer Part Number 62418801
Manufacturer OKI Data
Product Model 421
Product Name MICROLINE 421 Dot Matrix Printer
Product Line MICROLINE
Product Series 400
Brand Name Oki
Media Size Custom Size / Letter - 8.50" x 11"
Media Type Cut Sheet / Single Sheet / Multiple Part Form / Continuous Form / Index Stock / Envelope / Label
Standard Memory 128 KB
Platform Supported PC
Green Compliant Yes
Green Compliance Certificate/Authority ENERGY STAR
Weight (Approximate) 21.20 lb
Color White
Form Factor Desktop
Height 6"
Width 21.7"
Depth 13.6"
Duty Cycle 20000 pages per month
Number of Columns 136
Number of Pins 9-pin
Maximum Print Resolution 240 x 216 dpi
Maximum Mono Print Speed (cps) 570
Print Color Capability Monochrome
Limited Warranty 3 Year
Tech Specs
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:
NLQ: (10 cpi), Speed (in cps) 95
Utility:(10 cpi), Speed (in cps) 380
HSD: (10 cpi), Speed (in cps) 510
SSD: (12 cpi), Speed (in cps)570
Emulation, Interface and Memory
Emulation: Epson® FX, IBM® ProPrinter®, OKI MICROLINE
Interface: Standard – IEEE Parallel and USB; OkiLAN®
10/100 Base-T Internal Print Server (ML420/n, ML421/n);
Optional – RS-232C Serial and Ethernet® via OkiLAN 10/100
Base-T Internal or External Print Servers
Memory: 128K
Operating Systems: Windows® Vista® 32/64, 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)
ML420 – 24,000 pg./mo. duty cycle
ML421 – 17,000 pg./mo. duty cycle
Printhead Life: 400 million characters
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%
Ribbon Life: 4 million characters

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