Printhead

Spares

OKI Microline ML590 Elite and ML591 Elite 24-Pin Dot Matrix Printer

The OKI ML590 and 591 Elite are 24 pin dot matrix printers. The ML590 has an 80 column carriage and the ML591 has a136 column wide carriage. Maximum print speed is 450 characters per second although the more useful 10 characters per inch printing is somewhat slower at 300 characters per second. Letter quality is at 100cps so a page will typically complete in under a minute.

The feature that sets the ML590 and 591 apart is automatic platen gap adjustment - the printer senses paper width and makes this setting itself. Manual platen gap setting often gives problems in the environment where dot matrix printers are used. Poor print, paper wrecks, ruined ribbons and damaged printheads are the result.

  • Choice of widths -80 column ML590 or ML591 136 column for wide paper
  • High durability 24 pin head with a 200 million character life
  • 8 fonts and barcodes
  • Parallel interface as standard
  • RS232 Serial version available
  • 4 million character ribbon life
  • Up to 4 part forms, 1 original and 3 copies
  • A colour kit is available for this model
  • MTBF of 6,000 hours

Control:

Buttons and lights

Duty Cycle:

MTBF 6,000 hours

Ribbon life: 4 million characters using the re-inking cartridge

Printhead life: 200 million characters

Maximum of 450 characters per second at dpi.

Carriage width (10cpi) : 80 columns 136 columns

Max. in compressed mode: 160 columns 272 columns

Up to 360 x 360 dpi.

Character Pitch: 10/12/15/17.1/20 pitch & proportional.

Typeface & Font: Courier (Scalable), Roman (Scalable), Swiss (Scalable), Prestige, Gothic, Swiss Bold, Orator, Utility + Barcodes.

Paper Handling:

Choice of 80 column ML590 taking paper 76 to 254mm wide or 136 column ML591 taking paper 76 to 406mm wide.

Standard Paper Handling: Paper parking, Zero tear-off, Autoload single sheet, Rear push tractor

First Printable Line is 8.9mm from the top of page

Paper parts: 4 part paper, 1 original and 3 copies. Automatic platen-gap adjustment to deal with different media.

Continuous paper: ML590 76 to 254mm ML591 76 to 406mm

Continuous envelopes: ML590 165 x 91mm ML591 239 x 102mm

Optional Paper Handling: Pull tractors, Single/dual bins sheet feeder, Roll paper stand (ML590 Elite only), Bottom tractors with stand and zero tear-off.

Memory:

64KB

Interface:

Standard Interface is Centronics Parallel

Optional Interfaces: Serial RS 232C/RS 422/Current Loop

Epson LQ ESC/P2, IBM ProPrinter X24E/X24E AGM

Dimensions:

ML590: 133 x 437 x 380mm

ML591: 133 x 585 x 380mm

Weight:

ML590: 6.5kg

ML591: 8.6kg

Acoustic Noise:

55dB(A)/52dB(A) (quiet mode)

Consumables:

Ribbon (Life 4 million pages)

Colour Ribbon

Printhead (Life 200 milion characters)

Spares:

Access Cover - 2PA4094-7381G1

Back Up Roller Assy - 40917101

Cable Head Carriage - 2PU4007-1193P1

Case Gear Assy - 3PA4025-3406G1

Guide Roller Assy - 4PA4025-3719G1

Leaf Spring - 3PP4025-3320P1

LF Motor Gear - 3PB4055-2887P1

Operator Panel - 3PP4025-3670G3

Operator Panel Board - 4YA4042-1516G1

Platen Assy - 3PA4025-3370G1

Platen Knob - 42269201

Pull Up Roller Assy - 3PA4025-3440G2

Ribbon Protector - 3PP4025-3430P1

Space Rack - 40904401

Support Protect Assy - 4PA4025-3382G1

Tractor Assy - 3PA4025-3330G1

Print Head - 4YA4023-2601G1

Logic Board - 4AY7042-1514G401

Power Supplies - AYB4049-7031P4

Line Feed Motor - 3PB4025-3357P1

Space Motor - 4YA4025-3250G1

Options and Accessories:

Pull tractors.

Roll paper stand (for ML590 only).

Bottom tractors with stand and zero tear-off.

Single bin sheet feeder.

Dual bin sheet feeder.

Colour kit.

Serial RS 232C/RS 422/Current Loop Interface:

Copyright G & J Huskinson & MindMachine Associates Ltd 2013, 2015. Some pictures derived from OKI User and Service guides. These technical pages do not constitute an offer for sale; just our knowledge at the time of writing. See the catalog. Sales pages on this Web site use cookies to store user information. We also use Google Analytics to track site usage patterns.