Print From Your Computer : Macintosh Printing (OS X 10.5)

Select Advanced Print Options
After selecting the basic options on the Print window, you can click Advanced and select advanced options.
Select Advanced as the Mode setting.
Select the Print Quality setting for your document or photo.
If desired, deselect High Speed to improve print quality (printing may be slower).
To flip the image you’re printing, click Mirror Image. (If you are printing on Epson Iron-on Cool Peel Transfer paper, turn on Mirror Image.)
Click Quiet Mode to print more quietly on plain paper (will reduce print speed).
When you’re finished, you’re ready to print.