The present specification relates to an apparatus for manufacturing a blanket. The apparatus includes a surface plate on which a substrate film is supplied; a coating unit coating a blanket composition on the substrate film; and a comma blade horizontally moving on the surface plate coated with the blanket composition. Of the whole surface of the comma blade, the surface contacting the blanket composition is an angular surface. This application also relates to a method for manufacturing a blanket, a blanket manufactured using the same, a reverse offset printing roll provided with the blanket, and a reverse offset printing apparatus including the same.