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This continuous-feed paper, typically thermal in nature, provides a hard copy record of calculations and other data output by adding machines and certain types of calculators. A narrow strip of paper is wound onto a small spool, allowing for compact storage and easy dispensing. The thermal variety darkens when exposed to heat, eliminating the need for ink or ribbons.

The enduring utility of this recording medium stems from the need for physical documentation in various fields. From accounting and finance to scientific research and retail settings, a tangible record offers a convenient method for verifying calculations, tracking transactions, and archiving data. Prior to digital displays and electronic data storage becoming commonplace, such paper records were essential for preserving calculations and facilitating audits. While electronic records are now prevalent, hard copies still hold value as backups, physical proofs, and in situations where electronic access is limited or unavailable.

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