Charles Geschke
Earned degrees in classics and mathematics from Xavier University, plus a Ph.D. in computer science from Carnegie Mellon University. Joined Xerox's Palo Alto Research Center in 1972, where he formed and led the Imaging Sciences Laboratory before co-founding Adobe in 1982 with John Warnock. The two developed PostScript, a page description language for electronic document production that sparked the desktop publishing revolution. Served as Adobe's chief operating officer (1986–1994), president (1989–2000), and chairman (1997–2017). Established core business principles centered on building a company where they personally would want to work, emphasizing respect for employees and innovation—principles that sustained Adobe through competitive challenges and helped scale it into one of the world's largest software firms. Died April 16, 2021, at age 81.







