Which component inside a typical desktop inkjet printer is chiefly responsible for moving the print-head carriage back and forth across the page during printing?
Feed roller
Carriage belt
Fuser assembly
Transfer belt
The carriage belt (also called the timing belt) wraps around a motor pulley and an idler pulley. When the carriage motor turns, it drives the belt, and because the print-head carriage is fastened to the belt, the entire carriage assembly moves horizontally across the paper. If the belt is stretched, frayed, or missing teeth, the carriage can slip or stall, leading to misalignment or print-quality defects. The feed roller moves paper through the printer, the fuser assembly applies heat in a laser printer (not an inkjet), and the transfer belt is used in some laser printers to carry toner-none of these move the inkjet carriage.
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