What is the maximum scan resolution on the HP DeskJet 3755?
The scanner supports a hardware resolution of up to 1200 dpi and an optical resolution of up to 600 dpi. Supported scan file formats include Bitmap (.bmp), JPEG (.jpg), PDF (.pdf), PNG (.png), and TIFF (.tif). (Page 2)
From the official HP Deskjet 3755 All-in-One Printer manual, page 2
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