Final answer:
Robert Rauschenberg used photographic screen printing in his 1963 piece 'Retroactive I', which blends silkscreen ink on synthetic polymer paint on canvas, reflecting his mix of pop art with Abstract Expressionism.
Step-by-step explanation:
Robert Rauschenberg, an influential American artist, utilized photographic screen printing in several of his works. He famously used this technique in his 1963 piece, which features silkscreen ink on synthetic polymer paint on canvas. While Rauschenberg's innovative combinations of traditional and non-traditional materials bridged the gap between pop art and Abstract Expressionism, it is important to recognize that this question may refer to numerous works since Rauschenberg often experimented with screen printing during his career. However, a well-known instance of his use of this technology is in the piece titled 'Retroactive I,' from 1963. In this piece, he incorporates imagery from contemporary mass media, such as photographs of President John F. Kennedy, showcasing his interest in combining fine art with popular culture through the use of new media techniques like screen printing.