Those small colored circles or squares on food packaging—often spotted near the edges—are called printer’s color blocks or process control patches. Though they seem random, they’re crucial for printing quality control. These marks help technicians check color accuracy, ink density, and alignment during production, ensuring packaging looks consistent and meets brand and legal standards. While some may think they relate to flavor or nutrition, they’re purely technical tools. Next time you see them, know they’re there to keep your product’s packaging sharp and reliable.
