Which way do I insert the transparency into my front loading MP 560 Canon Printer.Shiny side up or down
It depends on which side you want to print on. For transparencies, you want to print on one side only. Most likely, you want to print on the shiny side; essentially as if it were a glossy photo. Load the transparency so that the shiny side gets printed on. Don't know that part? Front loading printers are the easiest to determine which side is printed on. Look at where the paper goes in and where it comes out. Think about it; for single sided printing, the paper isn't being turned around inside; merely rolled around an internal roller, then back out. Watch what happens to the paper the next time you print on a single side. See if the top of the printed page came out first, or last.
The most common designs of front-loaders have the paper come out above where it went in. The paper curls around the bottom of the internal roller and comes right back out on top. Therefore, the printed side started out on the bottom, then curled around the internal roller and came out with the printed side up.
Most front loading printers have the top of the printed page come out first; therefore, the same edge that went in first, got printed on first. With that in mind, if you ever want to print on the unprinted side of a piece of paper (that is already out of the printer), obviously keep the printed side up, but since the top of the printed side came out first, you need to make sure the top goes in first to come out first for the back side.
Your Canon 560 printer has duplex printing, so it is a good idea to run your test to see what happens when printed on a single side, and what happens if you use the duplex-mode. For duplex mode printing, after printing on one side, the printer pulls the paper back in to print the other side automatically. Think about how much space is inside the printer. Depending on how much data the printer can store, either the first page is printed, then the second page, or the second page is printed first, then the first page. It depends on how the printer wants the page to come out. You can run a simple test and see exactly what happens.
Since the printer cannot easily turn the paper around, it merely starts with the opposite end of the first printed side when it prints on the back. If the top of the page came out first for the first printed side, the printer prints the bottom lines of the second page of text working back to the top in reverse order. As a result, the bottom of the page comes out first, with the top coming out last.
Some duplex printers can store so much data that the determine how the second page will look, print it first, then print the first page. Watch to see what yours does.
Worse comes to worse, mark a sheet of paper in one corner, insert it into the printer, then print a document that contains only the period character and see where it is printed. By knowing how you put the paper in, and where the period was printed, you can tell how to handle any situation. By the way, the period character was chosen because it will be so small that most likely you can use that sheet again.