A review.There are many types of printed matter that we see on a daily basis.For example, newspapers, magazines, food/cosmetic packages, beverage cans, and the like.In recent years, as information technol. has spread, a very severe environment has developed where the demand for printed materials is decreasing due to the spread of electronic hardware such as smartphones and tablets.On the other hand, fields in which printing provides added value such as flexible packaging, packages, labels, etc. have remained strong, and printing still supports a rich commodity economy and plays an important role.In addition to conventional measures for safety and health, environmental protection and resource protection on a global scale have also become important environmental measures for printing inks.As environmental awareness increases around the World, sustainable development goals (hereafter referred to as "SDGs") have been set and environmentally friendly inks that meet various environmental guidelines have been developed to reduce environmental impact.We are convinced that printing inks that contain a high content derived from natural materials, such as rosin in rosin-modified phenolic resin and plant-derived fatty acids in fatty acid esters, in addition to vegetable oils, can greatly contribute to SDGs, and recently this fact has been re-recognized.Here, we will explain our approach to environmentally friendly inks and printed materials in response to changes in global environmental awareness.