Screens and Screening in Photography for Graphic Arts

Paper presented at a symposium on “Photography in the Printing Industry” organized by the Scientific and Technical Group of The Royal Photographic Society, 13-16 September 1983 at New College, Oxford.

Abstract

The field of graphic reproduction is in a period of strong transformation; this is confirmed every day in international contact with technicians and businessmen, in graphic exhibitions and in specialized congresses. It is partially due to the technological evolution of the wider field of Print-under the pressure of competition coming from the new mass-media-but it is also due to internal pushings, whereas the acquisition of new technologies involves the birth of new processes or modernization of the existing ones.

The following aspects will be discussed: innovations in the field of scanners: long range screens (HD = High Density), screens for laser light source, screens for electronic paging (planning system), composite sets, large size (CTX330), quality problems and new control systems, mechanical problems, moiré, microphotometrical MTV system. Screens for new processes: rapi[d a]ccess systems, diffusion transfer systems, photopolymer plates, screens for flexography. Re-screening for gravure (Toppan and similar)-high definition reproductions: screenless lithography, RML random micro lenticular screen, high resolution screening. Creative screening/"Color Effect” system. High frequency grids for optics, electronics, aerodynamics, missiles applications, etc.

Notes

Paper presented at a symposium on “Photography in the Printing Industry” organized by the Scientific and Technical Group of The Royal Photographic Society, 13-16 September 1983 at New College, Oxford.