Driver issues are the primary cause of printer malfunctions. For the Deskjet 4645, the most common errors involve "Printer Offline" statuses or failed scan attempts. These are almost exclusively software conflicts.
: Delivers up to 4800 x 1200 optimized dpi for color. Reviewers note that while text isn't quite as crisp as a laser printer, it is smudge-resistant and photos are comparable to kiosk prints. Specifications at a Glance Based on documentation from Printerland and HP Support : Focus: HP Deskjet Ink Advantage 4645 - TWFLD hp deskjet 4645 driver