Phototypesetting could use a photographic image of fonts, rather than hot metal, to create the printing layout.

FORBES: Death by Sharks: The Familiarity Death Trap

In fact, initially, they designed their new lines of photo typesetters on the old, hot-metal architecture and tried to incorporate elements of the hot-metal process into the phototypesetting.

FORBES: Death by Sharks: The Familiarity Death Trap

We were right on the cusp of the electronic age and had begun to use phototypesetting machines, but the paper was still composed physically on cardboard flats with film strips, X-Acto knives, hot wax, and rubber rollers.

FORBES: My Best Job Ever