2. the type of ink
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According to different methods, inks can also be divided into different types. Commonly used are flexographic printing inks, lithographic printing inks, gravure printing inks, screen stencil printing inks, special functional inks, and the like.
Toppan printing inks can be divided into lead-printing inks, lead-printing inks (copper inks), lead-printing plastic inks, rubber letterpress plastic inks (flexible plastic inks), letterpress inks, letterpress printing inks, etc. according to different characteristics. . This type of ink is basically a penetrating dry type ink. In the printing process, it is necessary to pay attention to the occurrence of ill-adherence such as poor adhesion, powdering, and contamination.
Lithographic printing inks include various offset inks, lithographic iron inks, lithographic photosensitive inks, offset thermosetting inks, and the like. Lithographic printing inks require high color strength and water resistance, and have good flowability and drying speed.
Intaglio printing inks include various gravure inks, engraved gravure inks, gravure plastic film inks, and the like.
Silk screen printing inks include screen printing inks, screen plastic inks, oil-type inks, water-type inks, and the like.
In addition to the above-mentioned several commonly used inks, there is also an ink that can play a special effect, such as micro-particle ink, gold and silver ink, fluorescent ink, magnetic ink, security ink, conductive ink, carbon ink, monitoring ink, Temperature indication ink, color ink, edible ink, etc.