You might find the edible sheets under the names "rice paper", "frosting sheets" and Wilton has a brand out now called "Sugar Sheets". There is a brand of edible ink called "Kopy Kake
" that works on some Canon and Epson printers; however you must clean it with a food safe conversion kit before use. All of these products can be found on the Kopy Kake site. I converted my Epson through them but I buy my sheets through a Canadian Online Supplier.
An easier and much cheaper way to go, especially if you aren't going to keep using the sheets, is to copy the items you want printed on sugar to an 8x10 size and take it to a local bakery or instore bakery where they do transfers for cakes. Here in BC I have got them done for anywhere from $6 to $15 per sheet.
Hope this helps.