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Two black printer ribbon cartridges in plastic packaging

LD Products

LD Products Printer Ribbon 42377801 Black 2-Pack

SKU CH-NZH6-4D429

Two-pack of black printer ribbons compatible with Okidata Microline 420, 421, 490, 491, 720, 721, 790 and 791 models

  • Works with multiple OKI MICROLINE models including 420, 421, 490, 491, 720, 721, 790, 791
  • Two black ribbons in one pack reduce cost per print
  • Compatible replacement for Okidata 42377801 cartridge
  • Designed for printers purchased in the United States and Canada
  • New LD Products cartridge ensures reliable monochrome output

Compatible ribbon pack for Okidata MICROLINE

This two-pack of black printer ribbons replaces the Okidata 42377801 cartridge. It fits Okidata MICROLINE models 420, 421, 490, 491, 720, 721, 790 and 791, including the n-variants. The ribbons are new and manufactured by LD Products for use with printers purchased in the United States and Canada. Small offices and legacy-system maintainers can keep a spare on hand without paying OEM prices.

Simple drop-in installation with regional constraint

Each cartridge slides into the printer's ribbon compartment the same way as the original. No tools or firmware steps are required. The only common issue is attempting to use these ribbons in units sold outside the United States and Canada, where they will not function. Retail packaging may vary, but the ribbon itself is identical across the two-pack.

Suits users of listed Okidata MICROLINE printers

This pack suits anyone running the listed Okidata MICROLINE dot-matrix models in North America who want a lower-cost black ribbon supply. Buyers with printers purchased in other regions, or those needing colour ribbons, should look elsewhere. The product is strictly a black ribbon replacement for the specific models named above.

Highlights

  • Works with multiple OKI MICROLINE models including 420, 421, 490, 491, 720, 721, 790, 791
  • Two black ribbons in one pack reduce cost per print
  • Compatible replacement for Okidata 42377801 cartridge
  • Designed for printers purchased in the United States and Canada
  • New LD Products cartridge ensures reliable monochrome output

Specifications

BrandLD Products

Questions about this item

How can I confirm the LD Products 42377801 ribbon is printing correctly after installation?

Run a test page on your OKI MICROLINE 420, 421, 490, 491, 720, 721, 790 or 791; the output should show solid black text with no faded or missing lines.

What comes in the 42377801 2-pack and is anything else needed to start printing?

The box contains two black compatible ribbon cartridges; no additional parts are required for the listed OKI MICROLINE printers.

Which ribbon version should I choose for an OKI MICROLINE 491 n?

The 42377801 black 2-pack is the correct replacement for the 491 n and all other listed MICROLINE models.

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