In offset and flexographic printing, there are many indicators to prevent quality degradation, one of which is known as TIC. This stands for the sum of the four CMYK values for each color. But what is its function and how can it help designers and production managers improve quality and control the printing process?
Pay attention to the following examples in CMYK colors:
- 100-40-100-50 / TIC: 290%
- 100-100-100-100 / TIC: 400%
- 70-20-10-50 / TIC: 150%
Coated papers: 300-350% TIC is often considered acceptable, but higher values may be possible depending on the paper type and printing conditions. Uncoated papers: 250-300% TIC is generally recommended, as uncoated papers may have lower ink absorption capacities and be more prone to ink trapping.
Increasing TIC beyond the recommended ranges can lead to several issues in printing:
- Ink Trapping: When too much ink is applied to the paper, it can become trapped between the paper fibers, leading to uneven ink distribution and blotchy areas.
- Smudging: Excess ink can cause the printed image to smudge, especially when the paper is handled or stored improperly.
- Color Shift: High ink coverage can result in a shift in the perceived colors of the printed image, as the ink can absorb light and alter the color balance.
