Printer ribbon Fullmark N639BK for OKI ML series (100, 180, 182, 192, 280, 320, 3320, 3321) — black

Fullmark N639BK is a black replacement ribbon designed for impact dot-matrix printers in the OKI ML series, including models 100, 180, 182, 192, 280, 320, 3320 and 3321. Intended for use with receipt rolls, multipart forms and continuous stationery, this ribbon provides a consistent ink supply for text and simple graphics where dot-matrix printing technology is required.

Advantages

This replacement ribbon offers consistent print density across long runs, reliable character formation for legible receipts and forms, and straightforward installation compatible with the specified OKI ML models. Manufactured to fit standard ribbon spindles, it helps maintain predictable print performance for impact printing tasks in office and retail environments.

Suitable for

• Printing receipts and invoices on continuous paper
• Producing multipart carbon-copy forms
• Text and simple graphical output on dot-matrix devices
• Environments requiring durable, impact-based printing (warehouses, point-of-sale, logistics)

Key specifications

• Ink color: Black
• Compatibility: OKI ML series impact dot-matrix printers (specified models)
• Application type: Impact ribbon for continuous and multipart stationery
• Form factor: Ribbon on spool for direct cartridge or spindle installation
• Primary use: Text and simple graphics printing

How to use

Turn off the printer and open the ribbon access cover. Remove the empty or worn spool and place the Fullmark N639BK ribbon onto the designated spindles, ensuring the ribbon is taut and correctly aligned with the print head path. Close the cover, restore power and perform a test print to confirm correct installation and print density. Follow the printer manufacturer’s instructions for ribbon replacement to avoid damage to the print head or mechanisms.

Usage recommendations

Store the ribbon in a cool, dry location away from direct sunlight and extreme temperatures. For best results, use with compatible OKI ML series printers and replace the ribbon when print density becomes faint or characters lose definition.