can't print double sided from my Mac computer with PIXMA MX870 ?

[Patrick]

Hi taolsze,

The procedure for printing data on sides of one sheet of paper with your PIXMA MX870 is as follows:

1. Select Duplex Printing & Margin from the pop-up menu on the Print dialog.  In the Print dialog, you can set paper type and print quality to start printing.  To open the Print dialog, you typically select Print... from the File menu of your application software.
   
   
   

2. Set duplex printing by checking the Duplex Printing check box.