The
Mergenthaler Linotype Company is a
corporation founded in the United States in 1886 to market the machine that casts metal type in lines (linecaster) invented by
Ottmar Mergenthaler. With the company's primary product, the
linotype machine (), it became the world's leading manufacturer of book and newspaper typesetting equipment; outside
North America, its only serious challenger for book production was the Anglo-American
Monotype Corporation.