The optimal target SID values are not universal; they vary significantly based on the paper type and the chosen print standard (such as ISO 12647). For instance, uncoated papers, which are more absorbent, require a lower target SID (e.g., Cyan 1.25–1.45 D) than coated papers (e.g., Cyan 1.45–1.65 D) to avoid excessive Dot Gain and Ink Film Thickness. The print shop must establish and maintain these specific target values for each Substrate combination.

Establishing a consistent Solid Ink Density target is the core of reliable Process Control. Measuring the target SID on a 100% patch using a Densitometer allows the operator to quickly adjust ink flow on press. By strictly adhering to these targets, printers ensure that all colors are reproducible and consistent across jobs, maintaining the integrity of the brand's color standards.