hiya het518,
I would make sure that you have your ink jets ready to go by doing a cleaning (running a test print on regular paper) before you start printing the actual image. This would make sure that you don't have any clogged jets (the ink has sugar in it and has a tendency to do this, especially if the printer hasn't been used in a coupla days or so). Also, after you have printed the image, if you aren't going to place it on the cake right away, keep it in a sealed baggy (ziplock or the like) away from light. And don't put the image on til you are bout ready to deliver it or display it. The frosting has a bad habit of sometimes causing the colors to bleed or fade and sometimes it will get bubbles in the image or look "wet". After you put it on the cake, protect it from the light. Until you display it that is.
Great choice! It is just like printing a regular picture. Just be sure to print a nozzle check first to help to pull the colors through the printhead. You can do that in your printer properties. It is just like printing a "regular" picture. The icing sheet shouldn't be removed from the bag until you are ready to print. And dont forget to reseal the zip lock bag with the other icing sheets that you are not using. Also, If you are not using your printer regularly, meaning once every week to 10 days, it is a good idea to print a "test" print on regular non edible paper within that time to help to keep the ink flowing! Most of all...have fun! 
My pleasure. Just remember, if you can see it on your screen...you can print it. So whatever your talents are on the computer, you can make some wild cakes!
You may have to mist some water on to the royal icing before placing the image on or you can lay a damp paper towel on prior to placing the image on.
Quick question for you ladies off topic but related.
How do edible images look on top of royal icing? Do they react differently to royal? I plan on using some on cookies and don't know if they are worth the money. Thanks for the info! bikegal
They look really good on top of royal. Just spread the royal onto the surface of the cookie and then lay the image on it before the royal hardens. Or spread a layer onto the back of the frosting sheet/edible image before applying it to the cookie. You might even want to try using fondant icing which doesn't dry as hard as royal but does allow you to stack the cookies. More info and recipe on that here...
http://sugarcraft.com/catalog/cooky/PCCreatitcookies.htm
I think it would be worth the $ to set up a a system even for use just on cookies. If you purchase the Canon iP1500 (2 cartridge) or iP3000 (4 cartridge) new on eBay or at an electronics/office supply shop, you'd be looking at start-up costs as little as $100 for both the printer and supplies.
Thanks lisa & Peaches for the quick response! Lisa, I think I'll take your advice and buy the frosting sheets and cartridges. I bought the ip3000 six months back but have not had the chance to stock up on edible image items. It was going to cost me $30 for 3 sheets when i can buy a pack of 24 frosting sheets for that same amount. Will post pictures!
bikegal
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