We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Three black printer ribbon cartridges in a row

LD Products

LD Products Compatible Printer Ribbon 42377801 Black 3-Pack

SKU CH-TAAJ-ZHS1A

Three-pack of black compatible ribbon cartridges for Okidata MICROLINE 420, 421, 490, 491, 720, 721, 790 and 791 printers

  • Works with multiple OKI MICROLINE models including 420, 421, 490, 491, 720, 721, 790, 791
  • Three black ribbons in one pack reduce reorder frequency
  • Compatible replacement for Okidata 42377801 at lower cost
  • New condition ensures reliable performance from first print
  • Designed for printers purchased in United States and Canada

Three-Pack Compatible Ribbon for Okidata MICROLINE

This three-pack of LD Products compatible printer ribbons replaces the Okidata 42377801 cartridge. Each ribbon prints in black and is supplied new. The multipack format lowers the cost per cartridge for offices that run high-volume dot-matrix printing.

Check Printer Model and Region Before Ordering

Confirm that your printer is one of the listed Okidata MICROLINE models: 420, 421, 490, 491, 720, 721, 790 or 791, including the n variants. The ribbons are guaranteed to work only with printers originally purchased in the United States or Canada, so verify the purchase region of your hardware.

Suits High-Volume Dot-Matrix Users.

Buyers who operate the compatible Okidata MICROLINE printers and want a lower-cost black ribbon supply will benefit from this pack. Users of inkjet, laser or thermal printers cannot use these ribbons, and anyone with a non-listed Okidata model or a printer bought outside North America should look for a different cartridge.

How it compares

Measured against everything we stock in Ribbon Cartridges for Printers, at today’s prices. Recalculated every night.

Price $7.99
Cheaper than about 90% of the 1,003 comparable items (median $17.99).

New to this? Buying a printer and toner with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameLD Products

Questions about this item

Does the 3-pack include anything besides the three 42377801 black ribbons?

The listing contains three 42377801 black printer ribbon cartridges. No other items are included.

Should I buy the 3-pack or look for a single 42377801 ribbon instead?

The 3-pack gives you three 42377801 black ribbons at once, which is convenient if you print regularly and want spares ready.

Will these 42377801 ribbons work in my OKI MICROLINE 420 n?

Yes, the 42377801 ribbons are compatible with the OKI MICROLINE 420 n as well as the 420, 421, 421 n, 490, 490 n, 491, 491 n, 720, 721, 790 and 791 models.

More in Ribbon Cartridges for Printers

Similar items