letter paper; writing paper
Refers to paper specifically intended for writing letters, often sold in pads or sets.
I bought some letter paper at the stationery store.
This letter paper is a little thicker than regular writing paper.
便箋 is the more common, everyday term for writing paper or letter pads. 書簡箋 is a more formal or specific term, often implying higher-quality paper for correspondence.
Standard kanji spelling using 簡 (letter) and 箋 (paper).
Variant using 翰 (writing brush/letter); less common and may be considered old-fashioned.
Compound of 書簡 (letter, correspondence) and 箋 (paper, slip). The spelling 書翰箋 uses an older character for 'letter'.