They don't! I have three printers right now, two inkjets for photo printing and one monochrome laser for documents - lately, mostly research papers about wasps

They don't! I have three printers right now, two inkjets for photo printing and one monochrome laser for documents - lately, mostly research papers about wasps. All three printers work beautifully. They all print perfectly from all my devices, never give me trouble, and thanks to the economics of HP's Instant Ink program, low and medium quality photo prints up to letter size only cost me as much as one sheet of whatever paper I'm using. Maybe I'm just lucky?