油墨的分类与几种特性（Ink classification and several characteristics）.docVIP

油墨的分类与几种特性（Ink classification and several characteristics） Ink classification and several characteristics,.Txt comrades: do not stock, the risk is too great, or the most safe to do tofu! Do the hard, it is dried bean curd, do dilute is bean curd brain, do thin is bean curd skin, do not have is soya bean milk, put smelly, it is smelly bean curd! Can not lose! Ink classification and several characteristics Ink classification and several characteristics First, the classification of ink With the development of printing technology, the varieties of ink are increasing, and the classification methods are also many. If printed according to the classification, the following five kinds: Letterpress printing ink: books, black ink, rotary black ink, color relief printing ink, etc.; Lithographic printing ink: offset light resin ink, offset printing rotary ink and so on; Gravure printing ink: gravure ink, engraving intaglio ink, etc.; Stencil printing ink: ink print ink Roneo, etc.; Special printing ink: foaming ink, magnetic ink, fluorescent ink, conductive ink, etc.. Two, printing ink printability The properties of substrates, printing inks, and other materials that match the printing conditions and are suitable for printing operations are called printability. The printability of an ink, in which ink is matched with printing conditions and suitable for printing operations. Mainly viscosity, thixotropy, thixotropy, drying and so on. 1. viscosity of ink The friction characteristics of ink flow in the show, called ink viscosity, physical quantity measuring ink viscosity, the viscosity of the ink is called. The viscosity of the ink can be measured by viscosity meter, commonly used viscometers have parallel plate viscometer, rotary viscometer, Raleigh viscometer etc.. The printing speed faster and faster, the greater the liquidity requirements of ink viscosity, the smaller the. The viscosity of the ink can be adjusted by inking oil or ink thinner. 2. adhesion of ink The ink from the