Monroe Systems for Business

Monroe M33X Premium Printing Calculator Ribbon Cartridges (Black, Red Ink)

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  • Front view of Monroe M33X Super Saturated Black/Red Ribbon Cartridges
  • Box view of Monroe M33X Super Saturated Black/Red Ribbon Cartridges


Monroe M33X Super Saturated Black/Red Printing Calculator Ribbon Cartridges

With Monroe's M33X printing calculator ribbon cartridge you'll never have to worry about a messy installation process ever again! The NEW Monroe M33X Black/Red Ribbon Cartridge is the first-ever Monroe ribbon cartridge that can be used across an entire line of Monroe printing calculator models. This ribbon cartridge is compatible with all Monroe X Series printing calculators, featuring the highest standards in the calculator industry. Monroe's ribbon cartridges produce the darkest printing black/red ribbon cartridges on the market using our exclusive True Red™ color. True Red ink is the perfect red specifically made by Monroe, and doesn't have the orange tint you see in watered down versions from other brands. Our ribbon cartridges have the highest possible inking degree, and are virtually smudge-free! To maintain the darkest print, we recommend users change their Monroe M33X ribbon cartridges after replacing 2 paper tape rolls.

Those who know, choose Monroe.

For use in the following Monroe calculators:

Monroe UltimateX ; Monroe ClassicXMonroe 8145X ; Monroe 8130X ; Monroe 6120X ; Monroe 2020PlusX ; Monroe 122PDX

Please Note: The Monroe M33X Black/Red Ribbon Cartridge is NOT compatible with any Monroe printing calculator model outside of the X Series. 

Click here to see a full list of compatible ribbon cartridges to find the right model for your Monroe calculator. 

The M33X will also work in the following brands and models:

  • Canon
    • MP41DHIII
    • MP27-MG
    • MP25DV
    • MP25-MG
    • MP11DX
    • MP27DII
    • CP1213DIII
    • CP1200DII
    • MP21DX
  • Sharp
    • EL-1197PIII
    • EL-2196BL
  • Casio
    • DR-270TM-BK
    • FR-2650TM
    • DR-210TM
  • Victor
    • Model 1230-4
    • 1280-7 (Older models in the creme color. This cartridge will not fit the current black color model)
    • 1240-3A
    • 1460-4

                                                           To install the M33X Ribbon:                                                                        To uninstall the M33X Ribbon:



 Comparing the Monroe P51S and M33X Ribbon Cartridges:

Mike Prasch of Monroe System for Business reviews the differences between our previous generation ribbon cartridge, the Monroe P51S, and our current generation ribbon, the Monroe M33X. If you have any questions about this video or Monroe printing calculators and their supplies
please contact us at 267-580-2600.

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Additional Information

For Use in:
Monroe UltimateX, Monroe ClassicX, Monroe 8145X, Monroe 8130X, Monroe 6120X, Monroe 2020PlusX, Monroe 122PDX and more!
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9 Reviews

  • 5
    Highly recommend.

    Posted by Sherry Deshamp on Mar 24, 2023

    Great quality, easy to install. I highly recommend purchasing the Monroe brand versus a no name brand for your Monroe calculators.

  • 3
    Monroe M33X...

    Posted by Robert Valentine on Mar 02, 2023

    I recently bought the new Monroe ClassicX printing calculator and a package of M33X ribbons for my new calculator. To my disappointment the printing on the paper is very faint. I suspect that either the printer itself does not put enough pressure against the ribbon when it prints, or the ribbons are not saturated with enough ink. Whatever, the reason, I am not very happy with either the ClassicX or the M33X ribbons.

  • 5

    Posted by Elaine Schorb on Feb 10, 2023

    Quality not great but better than one that was old - will keep as some may be better.

  • 5
    Monroe M33X Premium Printing Calculator Ribbon...

    Posted by Michael Hernandez on Jan 30, 2023

    Monroe M33X Premium Printing Calculator Ribbon Cartridges (Black, Red Ink)

  • 4
    Dark Ink

    Posted by Monroe Customer on Jul 12, 2022

    Direct from Monroe the ink is much darker than elsewhere. I still have some trouble installing these new X versions properly. But when they are installed properly, the ink color is GREAT!

  • 5
    Great customer service

    Posted by Adina Dickherber on Jun 20, 2022

    This company goes above and beyond :)

  • 5
    Fast Service

    Posted by Monroe Customer on Feb 09, 2022

    Staff is always very helpful and orders are received very quickly!

  • 5
    M33X ribbon cartridge

    Posted by Mike on Apr 17, 2021

    Works perfect in my new Swintec calculator.

  • 5
    Calculator Ribbon

    Posted by Pamela Riddle on Mar 31, 2021

    Easy to install

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