HP Scanjet PRO 4500 FN1 Network Scanner

Measuring 5.7 by 20.5 by 15.2 inches (HWD) and weighing 13.2 pounds, the HP ScanJet Pro 4500 is, like the ScanJet Pro 3500 (which is slightly smaller and lighter), too big to fit on the average desktop. The 4500 is also somewhat longer, yet shorter and lighter, than both the Canon DR-2020U and the Epson DS-6500. All of the scanners mentioned here are capable of 600dpi when you scan from the ADF and 1,200dpi from the flatbed, and they all deploy single-pass scanning mechanisms with two sensors (one for each page side), for faster, more reliable two-sided scanning. The two ScanJets and the imageFormula have 50-page ADFs, and the WorkForce model’s ADF holds 100 pages. In addition, the ScanJet 4500’s daily duty cycle of 4,000 pages is significantly higher than other models discussed here.