1. Offset paper, formerly known as "Daolin Paper", is mainly used for printing high-grade color printed matter by lithographic (offset) printing machines or other printing machines, and is suitable for printing monochrome or multicolor book covers, characters, inserts, pictorial, maps, posters, color trademarks and various packages.
2. Coated paper is also called printed coated paper. The surface of the base paper is coated with a layer of white paint, and the base paper is made of super calendering. It is divided into single-sided paper and double-sided paper, and the paper surface is divided into light splitting and cloth grain. The paper has smooth surface, high whiteness, good ink absorption and ink adhesion. It is mainly used for offset printing and gravure printing of fine screen printing, such as illustrations in advanced picture books, calendars and books.
Extended data:
Offset paper has small flexibility, uniform ink absorption, good smoothness, compact and opaque texture, good whiteness and strong water resistance. Conjunctival offset printing ink and good quality lead ink should be selected. The viscosity of ink should not be too high, otherwise there will be powder removal and galling. Also to prevent the back from getting dirty, generally use antifouling agent, dusting or lining paper.
Coated paper is characterized by smooth surface, high smoothness and good gloss. The smoothness of coated paper is generally 600 ~ 1000 s because the whiteness of the coating used is above 90%, the particles are extremely fine, and it is calendered by a super calender. At the same time, the pigment is evenly distributed on the paper, showing a pleasant white color.
References:
Baidu Encyclopedia-Coated Paper? Baidu encyclopedia-offset paper