Ben-Day dots are a printing technique that involves the use of small colored dots to create shading and texture in an image. The technique was named after its inventor, Benjamin Henry Day Jr., and was commonly used in comic book art and newspaper illustrations in the mid-20th century. By layering different colors of dots, artists were able to create the illusion of depth and dimension in their images. The Ben-Day dot technique has had a significant impact on popular culture and continues to be used in various forms of graphic design today.