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Six black dot matrix printer ribbons in sealed packaging

SuppliesMax

SuppliesMax OKI44173404 Printer Ribbon Black 6 Pack

SKU CH-0AYY-YMB76

Six-pack of black dot-matrix ribbons built to OEM specs for Okidata MICROLINE 621, 691 and 691N printers

  • CompatibilityOkidata 44173404
  • ColorBlack
  • Quantity6 Pack
  • SpecificationsOur compatible toner, inkjet cartridges, ribbons, copier and
  • FeaturesOur compatible toner, inkjet cartridges, ribbons, copier and
  • Sharp, professional output for receipts and invoices
  • Built to OEM specifications for reliable ML-621 performance
  • Excellent ink retention reduces ribbon change frequency
  • Six-pack supply supports high-volume business printing
  • Manufactured in ISO 9001 and ISO 14001 certified facilities

Compatible ribbon for Okidata MICROLINE 621/691

This six-pack of black printer ribbons replaces Okidata part 44173404 and fits MICROLINE 621, 691 and 691N models as well as ML-621, ML-691 and ML-691N machines. It is built to OEM specifications for sharp, professional output on receipts, invoices and other high-volume business documents. The ribbons are manufactured in ISO 9001 and ISO 14001 certified facilities using new and recycled components.

Consistent output during extended print runs

Excellent ink retention keeps density stable across long batches so text remains legible from the first page to the last. The formulation resists drying out between shifts, reducing the chance of faded lines or smudging when the printer sits idle. Designed for 110V equipment sold in the U.S., the ribbons maintain reliable feed and impact quality throughout the cartridge life.

Simple cartridge swap with minimal issues

Installation follows the standard Okidata ribbon change procedure: open the cover, remove the spent cartridge and snap the new one into place. No tools or firmware updates are required. The most common problem is forgetting to seat the ribbon guide fully, which can cause misaligned characters; a firm click confirms correct engagement. Using compatible supplies does not void the printer manufacturer warranty.

Highlights

  • Sharp, professional output for receipts and invoices
  • Built to OEM specifications for reliable ML-621 performance
  • Excellent ink retention reduces ribbon change frequency
  • Six-pack supply supports high-volume business printing
  • Manufactured in ISO 9001 and ISO 14001 certified facilities

Specifications

BrandSuppliesMAX
Part NumberOKI44173404
CompatibilityOkidata 44173404
ColorBlack
Quantity6 Pack
SpecificationsOur compatible toner, inkjet cartridges, ribbons, copier and other supplies are constructed to original OEM specifications. Guaranteed Superior Quality to Meet or Exceed High Priced OEM Products. Our Products are manufactured with new and recycled components and air-sealed in an ISO-9001, ISO-9002, ISO-14001 quality certified factory. Our Products are Engineered and Manufactured for use in 110V machines in the North America. The use of our supplies does not void your machines warranty.
FeaturesOur compatible toner, inkjet cartridges, ribbons, copier and other supplies are constructed to original OEM specifications. Guaranteed Superior Quality to Meet or Exceed High Priced OEM Products. Our Products are manufactured with new and recycled components and air-sealed in an ISO-9001, ISO-9002, ISO-14001 quality certified factory. Our Products are Engineered and Manufactured for use in 110V machines in the North America. The use of our supplies does not void your machines warranty.

Questions about this item

Does the ribbon generate extra heat or noise when the MICROLINE 691 runs continuously all day?

The ribbon is a passive consumable; it adds no heat or noise beyond the printer's normal operation.

Which printer models must I already own for these six black ribbons to work?

They fit Okidata MICROLINE 621, MICROLINE 691, MICROLINE 691N, ML-621, ML-691 and ML-691N.

Will the ribbon perform reliably in an older ML-621 that has seen heavy daily use?

Yes, it is built to OEM specifications for those legacy models and delivers consistent output.

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