Question: Help, printing problem

I am using maple 11. I have an HP printer which I verified is working corrrectly. I have a document made in document mode that I stored in a file, and when I print it sometimes it comes out ok and sometimes it comes out with everything about double size and I don't know what I am doing to cause the double size. When this happens I go to file, print preview and click on double page, and then single page at the top and everything seems to print ok in normal size again. But now I just completed another document and tried to print it out and it printed again with about double size letters but when I go to file print preview, double page and single page are not enabled and I don't know why and consequently I have no way to print out this document. In addition there is nothing in the manual that I can find on printing or double or single size. I don't understand what is going on here or how to control what is going on so I cannot print my latest document. Any help on this problem would be greatly appreciated as I shut down with no way to print my document. Please help and thanks. This is the worst difficulty I have faced with maple.
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