Dot-matrix printers: which paper-feeding method is most commonly associated with continuous forms and reliable multi-part printing?

Introduction / Context:
Dot-matrix printers are widely used for multipart forms and long continuous print runs. Their paper transport mechanisms are optimized for perforated, fanfold paper. Knowing the common feeding method helps in selecting the right media and avoiding jams or misalignment.

Given Data / Assumptions:

• Classic impact printer used for invoices, receipts, and shipping forms.
• Media: continuous fanfold paper with sprocket holes along the edges.
• Requirement: reliable alignment across multiple pages or carbonless copies.

Concept / Approach:
Tractor feed uses sprockets that engage holes on the paper edges, providing positive, synchronized movement ideal for long continuous jobs and multipart forms. Friction and sheet feeding are more common in laser or inkjet printers, and while some dot-matrix units can use friction feed, tractor feed is the signature mechanism that ensures precise line advance and registration over long runs.

Step-by-Step Solution:

Verification / Alternative check:
Observe uniform perforation tear lines and consistent margins across many pages—an indicator of proper tractor feed engagement.

Why Other Options Are Wrong:

• Sheet feed: Suited for single cut sheets; uncommon for traditional dot-matrix continuous forms.
• Friction feed: Works for some tasks but is less reliable for long multipart runs.
• Manual feed: Impractical for continuous, unattended operation.
• None of the above: Incorrect because tractor feed is the standard method.

Common Pitfalls:
Incorrect tractor tension causing skew, misaligned perforations leading to jams, and mixing paper types that do not match sprocket pitch.

Final Answer:
Tractor feed