For printing inks, we also have our own understanding:
[Point 1] ISO 12647 lithographic four-color ink standard ...
[Point 2] Ink general characteristics inspection and indicators ...
1. Brand / Model / Color
2. Production date / storage period
3. Shelf life
4. Packaging appearance
5. Weight (after deducting the weight of the iron can)
6. Damage / deformation
[Point 3] Inspection and index of important physical properties of ink ...
Color intensity
2. Hue deviation
3. Overprint capability
4. Viscosity and fluidity
5. Anti-alcohol / water properties
6. Drying characteristics
[Point 4] Inspection of important physical properties of ink ...
1. Check ink production and expiration date
2. Four-color ink hue detection
3. Detection of "color intensity" of four-color ink
4. Four-color ink viscosity test
5. Four-color ink drying characteristics
6. Four-color ink heavy metal content
7. Spot ink
[Point 5] Reference index for inspection of important ink characteristics ...
1. Color intensity: the chromaticity or density of a certain ink thickness
2. Hue deviation: the hue of the ink
3. Overprint capability: MC> xx, MY> xx, CY> xx
4. Viscosity and fluidity: change the viscosity in color order
5. Anti-alcohol / water properties:
6. Drying characteristics: do not stick hands after printing for 2 minutes
ã€Point 6】 Ink, color sequence and viscosity ...
• Ink overlaps, who pulls who?
• Overprint rate affects color and gray balance
• Density also affects overprint
• Understand ink viscosity and color sequence
• The necessary knowledge to change the color sequence
• How to measure overprint
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