OKI Microline 390 Turbo

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The OKI Microline 390 Turbo is a 9-pin dot matrix printer designed primarily for office use with a focus on reliability and cost efficiency. It employs impact printing technology capable of high-speed draft and letter-quality modes. The printer supports continuous and single-sheet paper feeding with a tractor feed mechanism, enabling use with multipart forms and labels. Its connectivity options include parallel and serial interfaces commonly used in legacy office environments. The Microline 390 Turbo features a graphics resolution of 240 x 144 dpi, suitable for printing text and basic images. It operates on a 24-pin print head moving horizontally across the paper, providing fast and economical printing for business reports and invoices.

The device includes onboard memory of 128 KB for data buffering and supports emulations such as Epson ESC/P and IBM Proprinter for compatibility. It offers multiple fonts and character sets with user-selectable pitch and line spacing. The printer's robust metal frame ensures durability and long service life in heavy-use scenarios. Its Turbo version enhances print speed up to 435 characters per second in draft mode, significantly reducing bottlenecks in print-intensive workflows.

The OKI Microline 390 Turbo provides high reliability for continuous printing with minimal maintenance requirements. Its fast print speed up to 435 cps in draft mode optimizes work throughput. The 9-pin dot matrix technology allows for printing multiple copies simultaneously via carbon or carbonless forms. It is highly compatible with various legacy systems through its support of standard emulations. The printer’s durable metal construction ensures longevity under heavy daily usage. Also, it supports multiple paper types and sizes including labels and multipart forms, enhancing operational flexibility.

As a dot matrix printer, the Microline 390 Turbo produces lower print quality compared to modern laser or inkjet printers. It is limited to black and white output without color capabilities. The noise level during operation is considerably higher due to impact printing mechanics. Its resolution of 240 x 144 dpi restricts the detail quality for complex images or fonts. Interface options are mostly parallel and serial ports, lacking USB or network connectivity natively. The printer's relatively slow speed by today's standards reduces efficiency in high-volume printing environments.

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