OKI MICROLINE 591 image

OKI MICROLINE 591

Quick information
Brand OKI 1990
Model ML591
Released Year 1990
Type Printers
Series Microline
Status Discontinued
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Overview

The OKI MICROLINE 591 is a dot matrix impact printer designed primarily for office and business environments. It uses a 9-pin print head capable of producing crisp and clear characters on multipart forms and continuous stationery. The printer supports various print speeds, typically up to 435 characters per second (cps), making it efficient for high-volume tasks. It features tractor feed mechanisms ensuring reliable paper handling and minimal misfeeds. Connectivity options include parallel and serial ports to interface with a broad range of computers and systems. Its compact design and durable build ensure long-lasting use even in demanding printing environments.

Specifications

MPN ML591
UPC 0051851040714
Model MICROLINE 591
Technology Dot Matrix
Connectivity Parallel port, Serial RS-232
Output Type Black & White
Type Workgroup Printer
Product Line OKI Microline
Depth 14.89in
Extend Printer Technology Dot Matrix
Color White
Form Factor Desktop
Media Type Envelopes, Continuous Forms, Plain Paper
Max Resolution (Bw) 360x360DPI
Max Media Size A3 (297x420mm)
Black Print Speed 450cps
Print Technology 9-pin Dot Matrix Impact Printer
Print Speed Up to 435 cps (characters per second) draft mode
Print Resolution 240 x 144 dpi
Paper Handling Single and continuous forms, multipart forms (up to 6 copies)
Character Sets Supports ESC/P emulation and IBM Proprinter emulation
Fonts Draft, Courier, and Roman fonts
Operating Systems Compatible with DOS, Windows, and various legacy systems
Power Consumption 40 Watts (approximate)
Dimensions (W x D x H) 360 x 285 x 160 mm
Weight Approx. 6.5 kg
Noise Level Around 58 dB during printing
Emulations ESC/P, IBM Proprinter
Interfaces Parallel, Serial
Form Feed Tractor Feed Mechanism
Discontinuation Yes

Key Advantages

The MICROLINE 591 offers robust reliability and high endurance suitable for heavy-duty printing. Its ability to print on multipart forms is ideal for invoicing and receipt generation. The dot matrix technology allows for carbon copy printing, a feature unavailable on inkjet or laser printers. Its fast printing speed helps increase office productivity. The printer supports multiple emulations, making it compatible with diverse software and operating systems. Its energy efficiency and low maintenance costs contribute to overall operational economy.

Limitations

As an impact printer, the MICROLINE 591 produces lower resolution text and graphics compared to modern laser or inkjet printers. It is comparatively noisy during operation, which may not suit quiet office environments. The print speed and quality are limited by the 9-pin print head technology. Lack of color printing capability restricts its use to monochrome applications. It also lacks advanced connectivity options such as USB or network support commonly found in newer models. The physical size is larger than contemporary compact printers, requiring more desk space.

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