Printing solution caused by fountain solution

Thirteen printing problems caused by the fountain solution

1 Paper and paper dust accumulate on the rubber surface: Acid in the fountain solution damages the paper coating.

2 Printed hair: The coating on the surface of the paper falls off and accumulates on the ink roller, the blanket, and on the plate.

3 printing plate off: fountain solution additive is too acid or corrosive.

(4) Plate corrosion: The effluent of the fountain solution has insufficient oxidizing power, the PH value is too high, the emulsification is aggravated, the additive is too much, the pressure of the ink roller is poorly adjusted, the alcohol is too high, the ink is too thin, and the printing plate is damaged.

5 Foaming: The fountain solution is too strong or the additive itself foams.

6 Drying bad: PH value is too low, ink paper with poor, acidic paper is too strong.

7 Insufficient anti-friction force: PH value is too high, alcohol is too little, plate anti-dirty power is insufficient, roller is poorly adjusted, and ink supply is not correct.

8 dirty version: too little fountain solution, fountain solution is no longer suitable for use, fountain solution is contaminated, the machine is not adjusted correctly.

9 Flying ink: excessive emulsification, ink and water imbalance.

10 fountain solution Corrupted odor: lack of additives, water microbial growth, lack of antibacterial ingredients.

11 Bottom contamination: PH is too high, the printing plate is poorly wetted, the ink volume is too large, the ink on the printing plate and the eraser, the alcohol is too low, the ink is not balanced, and the water quality is problematic.

12 Water Roller Ink: Too little hydrophilic material in fountain solution.

13 Ink roller stacking: wrong fountain solution ratio, excessive emulsification, high pH, ​​low alcohol content. (For details, please refer to: )

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