HP Deskjet 5650 - Manual (Page 81)

3. Select Print on Both Sides .
4. Verify that Automatic is not selected.
5. Select a binding option in the Booklet Layout is drop-down list:
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Right Edge Binding: Places the binding on the right side of the booklet.
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Left Edge Binding: Places the binding on the left side of the booklet.
6. Do one of the following:
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To leave every other page of the booklet blank, select Print On One Side .
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To print on all pages in the booklet, leave Print On One Side unchecked.