Yes—you can safely store the removed cartridge for later use. A practical approach is to place the unused black cartridge back into the plastic sheath or protective packaging that new cartridges come in, then keep it in a safe place. That helps protect it from drying out and accidental spills.

Based on user experience with the R2880, the cartridge should generally keep fine this way, with no major drying or leakage issues, as long as it’s stored carefully. Using the original protective sleeve is the key idea here.

So in short: remove the cartridge, put it in its plastic sleeve or similar protective holder, and store it securely until you need to swap it back in.