びんせん便箋binsen
1.

A type of paper specifically designed for writing letters or notes, often featuring printed guidelines or lines to aid in maintaining neat handwriting.

2.

A specialized sheet used for correspondence, typically distinct for its aesthetic or functional qualities, such as having a decorative border or specific weight.

3.

A form of stationery that is pre-printed with vertical lines, making it suitable for formal letter writing or personal messages.

Example:

その便せんには校章が打ち出しにされている。