Ben Day is a printing technique that uses small dots of color to create images and patterns. It was developed in the 19th century and is often associated with the work of artist Roy Lichtenstein, who popularized it in his comic book-style artwork. The technique allows for the reproduction of images in a cost-effective way, making it widely used in commercial printing. The process involves placing dots of varying sizes and spacing to simulate different shades and tones. This method is commonly seen in pop art and graphic design, where it adds a unique visual texture to printed materials.