ColorSync Rendering Intent settings
Perceptual For photographic images. Maintains the relationship between colors as it scales them to fit within your printer’s color gamut.
Saturation For charts and business graphics. Maintains the relative saturation of colors from one gamut to another.
Colorimetric For projects with known colors, such as labels and packaging. Maintains colors that fall within the gamut of both your monitor and printer.
Note
If you experience problems, you may not be able to use background printing.
Your printer comes with several utilities that let you check on your print jobs and schedule, cancel, pause, or restart them. First you need to set up background printing, so you can continue to work on your Macintosh while a file is being printed. Note that background printing is slower and may also slow down your system.
Setting Up Background Printing
You may have set up background printing in the Chooser when you installed your printer software. If not, or you can use the background printing button on the Print dialog box to set it up. Follow these steps:
1.Start an application, open a document, and choose Print from the File menu.
2.Click the 
background printing button. You see this dialog box:
not available if background printing is turned off
3. To turn background printing on, click the On button.