Eco-friendly Ink Market Size & Forecasts 2026-2035, By Segments (Ink Type, Application, Substrate, End-User Industry), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (Sun Chemical, Flint Group, Toyo Ink, Sakata INX, DIC Corporation)