Ozalid (trade mark)

Ozalid is a registered trademark[1] of a type of paper used for "test prints" in the monochrome classic offset process.

OZALID was first federally registered in the United States as a trademark on February 5, 1929 as a brand for light-sensitive copying and photographic papers.

Holding Company, Inc. of New York, and is related to the even earlier registration of October 11, 1923 in what is now the Federal Republic of Germany.

Holding Company also owns a United States trademark registration for OZALID for "copying and reprographic machines, apparatus and parts thereof.

OZALID as a mark for "machines for diazo type prints" was first registered in the United States in 1938 and is now expired.

Ozalid machine in use with the City of Seattle, City Light office, circa 1954.