Final answer:
A dot matrix printer uses a tractor feed mechanism to advance the paper through the printer by engaging with perforated holes on the sides of the paper.
Step-by-step explanation:
The type of printer that uses a tractor feed during the printing process is the dot matrix printer. The tractor feed mechanism is used to advance the paper through the printer by engaging with perforated holes on the sides of the paper. This type of printer is commonly used for printing forms and multipart documents.