How to Reset the Ink Level on a HP 4100 Printer

By Ryan Bauer

  • Overview

    The HP 4100 printer uses the C8061X model toner cartridge, which is relatively easy to refill. The problem is that once it's refilled, the cartridge still won't work in the 4100 printer because it will read as out of toner. The printer keeps track of the toner levels in the last 3 cartridges that were inserted into it, and if it thinks they are empty, it will no longer even attempt to print. To reset the ink level on this printer, you have to replace the cartridge's microchip so that it appears to be a new cartridge. The printer will assume it is full, and set its ink level to 100% right off the bat. Toner refill kits that are made for your specific printer will come with one of these chips.
    The HP 4100 series printer
    • Step 1

      Remove the cartridge from the printer by opening the front cover, raising the locking tabs on either side of the cartridge, and sliding it straight out of the printer. Examine the perimeter of the cartridge until you see the microchip. It is shiny and about the size of a pencil eraser.
    • Step 2

      Using a pair of tweezers, remove the old microchip. It is held in place by friction alone, so it can be pulled directly up (towards the top of the cartridge) and out of its holder. Make a note of how it was oriented, and save it in a safe place in case you use it again in the future. After you use 2 other chips, the printer's memory will erase the data it has stored regarding this one and you can use it again.


    • Step 3

      Remove the new microchip from its packaging, and slide it into place in the same way the old one came out. Make sure it is facing the same direction that the other one was. Insert the cartridge back into your HP 4100, and make sure the side locking tabs click into place.
    • Step 4

      Turn your printer on. It should now read the toner level as 100% full. Go ahead and print a test page to make sure everything is as it should be. If there are any problems with the printer recognizing the cartridge, remove it again, and inspect the microchip to make sure it is seated properly.
    • Skill: Moderately Easy
    • Ingredients:
    • Replacement cartridge chip
    • Tweezers
    • Tip: These chips can be purchased from specialty retailers or eBay.
    • Tip: Since the printer only remembers up to 3 cartridges, you can also reset the ink level by cycling through multiple cartridges to make it forget about this one.

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