noun
blanket sheet; broadsheet size
Refers to the large paper size used for Japanese broadsheet newspapers, specifically 406×545 mm. A technical term in printing and publishing.
日本の新聞はブランケット判で印刷されることが多い。
Japanese newspapers are often printed in blanket sheet size.
ブランケット判は406ミリ×545ミリの大
The blanket sheet size is 406 mm by 545 mm.