Print From Your Computer : Macintosh Printing (Mac OS X 10.5 and 10.6)

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. Available print quality settings depend on the selected Media Type setting.
Click High Speed to speed up printing (may reduce print quality).
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.)
For quieter printing when Plain Paper/Bright White Paper is selected for the Media Type, click Quiet Mode.