electronic phototypesetter

Electronic phototypesetters represent a significant advancement in typesetting technology, moving beyond mechanical and light-based methods to utilize electron beams. These machines, appearing in the 1960s, replaced light with a flow of electrons that could be precisely controlled by magnetic fields.12

This technology operates similarly to a closed-circuit television system. A reading device scans the outline of a letter matrix and converts this information into electronic signals. An output device's screen then reconstitutes a luminous image of the letter based on these signals, which is then projected onto photosensitive film. Computers direct the process, selecting matrices and positioning the output image on the screen to form lines of text. Some advanced models can compose entire pages, including illustrations, at speeds exceeding 3,000 characters per second. This electronic approach dramatically increased composition speed and efficiency compared to earlier methods.123