炭たん酸さん紙し

noun

carbon paper

A sheet of paper coated with carbon or a similar substance, used to make copies of handwritten or typed documents.

• 伝でん票ぴょうを書かくときは、炭たん酸さん紙しを間あいだに挟はさんでください。

  When writing a slip, please insert carbon paper between the sheets.