Hi,
I don't believe you can print them on a single page. The fact they are
separate sheets means a new page will be used for each one.
You could move the charts to a single sheet by making each chartsheet an
object within a new empty chartsheet. To do this use the location method
on the chart to specify it's new location as an object within a chartsheet.
Or if your printer has the option you may be able to print multiple
pages on a single sheet.
Cheers
Andy