Types of lithographic Inks

It is made of fine metal (aluminum and copper powder) mixed with connecting material. The brightness of metal ink depends on the quality of metal powder and the number of floating ink layers. Aluminum powder makes silver ink and copper powder makes gold ink.Types of lithographic Inks

A. Types of lithographic inks:Types of lithographic Inks

      It is made of fine metal (aluminum and copper powder) mixed with connecting material. The brightness of metal ink depends on the quality of metal powder and the number of floating ink layers. Aluminum powder makes silver ink and copper powder makes gold ink.Types of lithographic Inks

① Gold base:Types of lithographic Inks

      It is printed on the printing paper first, and then sprinkle the metal powder on it to make it adhere to the gold bottom. The gold powder spreader can generally be connected to the end of the printing machine. Generally, the gold bottom is made of thick linseed oil or comprehensive binder with transparent pigment, and a little grayish yellow or green pigment is often mixed to increase the visibility of the gold bottom.Types of lithographic Inks

② Bright ink:

The connecting material is composed of rosin resin, which is generally not easy to penetrate into the paper, and the color material is also specially selected to ensure that it can fully integrate with the connecting material and float freely in the ink layer

③ Hot dry ink:Types of lithographic Inks

      The binder is made of high concentration synthetic resin dissolved in carbon hydrogen compounds, and the boiling point of this solvent is between 560.Types of lithographic Inks

      The evaporation rate of this ink is low at normal temperature, but after heating, it will increase with the increase of temperature. It is usually used on a printing machine with a dryer, suitable for roller paper printing.Types of lithographic Inks

④ Printed iron ink:

      The connecting material is composed of dry oil, improved resin, a little crimson oil or evaporated solvent. The color material is specially selected and will not change color after drying. Features heat resistance, no discoloration after drying. Types of lithographic Inks

      After printing, the iron sheet passes through the high hot blast furnace, and the general temperature is between 230 ° C and 350 ° C. the temperature adjustment depends on the quality of work and mechanical application, and the baking time is between 5-20 minutes.Types of lithographic Inks

      If the baking time is short, the temperature will increase. General pigments can not withstand such high temperature. Iron plate printing needs high temperature, so the color used for printing is limited.Types of lithographic Inks

⑤ Metallic ink:Types of lithographic Inks

It is made of fine metal (aluminum and copper powder) mixed with connecting material. The brightness of metal ink depends on the quality of metal powder and the number of floating ink layers. Aluminum powder makes silver ink and copper powder makes gold ink.Types of lithographic Inks

⑥ Newsprint ink:

The ink is thin and the flow rate is fast. It is generally composed of mineral oil and carbon black. Ink is sucked into paper and dried. It is generally used in high-speed printing presses.Types of lithographic Inks

⑦ Quick drying ink:Types of lithographic Inks

The connecting material is composed of a special mixture of rosin and oil. After the ink is printed on the printing paper, the turpentine and oil are separated immediately. The turpentine becomes a hard ink layer on the paper surface, and the oil penetrates into the paper layer.Types of lithographic Inks