HP 3740 series - Manual (Page 35)

2. In the Scale box, type the percentage by which you want to shrink or enlarge
the document.
• Type a number from 25 to 99 to reduce a document image.
• Type a number from 101 to 400 to enlarge a document image.
3. Click OK, and then print the document.
HP Deskjet 3740 series printer User's Guide
35