What are modern inks according to type classification?

Ink classification of modern ink is mainly divided into four types:
1. Relief printing ink.
A type of ink used to print books, newspapers, picture books, receipts, books, etc. The main feature of letterpress printing is that the ink part of the printing plate protrudes from the non-inking part. Letterpress printing ink press type and printing products for the purpose of printing ink, copper printing ink, relief rotary ink, flexible relief printing ink.
2. Lithographic ink.
A type of ink suitable for lithographic printing. Lithographic parts basically at a plane, layout of the motifs in oil-wet, hydrophilic, the grain by using the principle of oil and water repellent for printing, so the lithographic printing ink water resistance is a must. The process is divided into offset printing ink, web offset printing ink, offset printing ink, waterless offset printing ink, printing ink, lithographic ink.
3. Gravure ink.
A type of ink for gravure printing. When printing, it is inked into the layout of the layout. Ink is removed or scraped away from the non-print part, and then printed. There are gravure printing ink and photogravure printing ink.
4. Screen printing ink.
A type of ink that is printed on the substrate through a printing plate. Screen printing ink is also divided into transcribed ink and screen printing ink.