Solvent-based inks are printing inks that use a solvent as the primary carrier for the color pigments. These inks are known for their durability and resistance to water and fading, making them suitable for outdoor applications. They are commonly used in large-format printing, signage, and banners. The solvent in these inks can be either volatile organic compounds (VOCs) or more environmentally friendly options. While solvent-based inks provide vibrant colors and excellent adhesion to various surfaces, they may require proper ventilation during use due to the fumes released during the printing process.