Printing images is a great investment if....you are going to print regularly. Otherwise, there is no guarantee as to what will happen. Sometimes it is fine, other times it is not. We do not recommend that you buy a printer if you are not going to be using it at least once every 1-2 weeks. While people attempt to store the inks, it doesnt always work. If you are not going to use your printer regularly, you are better off purchasing the prints from someone otherwise you will hate edible printing. That being said, many people do not always listen! I dont always listen so, if you are going to store it, a lot depends on what brand cartridges you are going to be using. We have found that letting the ink stay in the printer and printing on regular paper at least every one to two weeks is the best way to go. The ink costs about the same as regular ink, however they can be refilled and that prevents clogging. If you want to remove the ink, then you will have to clean the printhead and put that in an airtight bag, however, you can never truly be sure as to whether or not you cleaned all the ink out and so you do not know whether or not you will come back to a clog. If you are using sponged cartridges, then the sponge can harden over time. You really do not know what you are coming back to when it is time to print. So, I hope I answered your question.
On a better note, if you want to use your printer, find any area bakery or a few local cake decorators who do not have a machine and print for them!