Charles Geschke

Charles Geschke

Geschke started working at Xerox's Palo Alto Research Center (PARC) in 1972. His first project was to build a mainframe computer. Following this, he worked on programming languages and developed tools that were used to build the Xerox Star workstation.

Charles Geschke founded Adobe with John Warnock in 1982, having both left Xerox.

At their new company, they developed PostScript from scratch, having failed to convince Xerox that their previous similar development, InterPress, was worth publishing. PostScript was first brought to market for Apple's LaserWriter in 1985.

Both Geschke's father and grandfather worked as letterpress photo engravers. His father helped Adobe in their early days by checking colour separation work. Geschke described his father's acknowledgment of the high quality of the halftone patterns as "a wonderful moment".