Ozalid
(ˈəʊzəlɪd)
[Formed by reversing diazo- and inserting l.]
A proprietary name used esp. in connection with a diazotype copying process in which the light-sensitive coating of the paper contains the coupling compound as well as the diazonium salt, so that the image may be made visible by exposure to gaseous ammonia. Hence, a photocopy produced by this process.
| 1924 Trade Marks Jrnl. 16 July 1608 Ozalid... Paper.., stationery, and bookbinding. Kalle & Co., Aktien Gesellschaft.., Biebrich-on-Rhine, Germany; manufacturers and merchants. 1928 Official Gaz. (U.S. Patent Office) 13 Nov. 292/2 Kalle & Co. Aktiengesellschaft, Wiesbaden-Biebrich, Germany. Filed Jan. 30, 1928. Ozalid for light-sensitive copying and photographic papers. Claims use since Mar. 19, 1923. 1929 Encycl. Brit. XVII. 803/1 G. Kögel has patented..the use of diazoanhydrides..for paper that may be used for the same purpose; this process is known as ‘Ozalid’. 1939 Thorpe's Dict. Appl. Chem. (ed. 4) III. 589/2 Ozalide [sic] papers, which have largely displaced blueprint paper, are based on the principle that a light-sensitive diazoanhydride may be mixed with a phenol or aromatic amine without coupling until the mixture is rendered slightly alkaline. 1941 Official Gaz. (U.S. Patent Office) 23 Dec. 767/2 General Aniline & Film Corporation, New York, N.Y. Filed Oct. 22, 1941. Ozalid. For light-sensitive diazotype paper, cloths, films, etc., for machines for developing the photoprints thus produced and parts of such machines. Claims use for light-sensitive diazo type materials since Mar. 19, 1923; and for printing and developing machines since May 1, 1936. 1944 Trade Marks Jrnl. 12 Apr. 167/2 Ozalid... Photographic and photocopying apparatus, instruments, and utensils. Ozalid Company Limited,..London,..manufacturers and merchants. 1967 V. Strauss Printing Industry v. 267/2 Diazo papers..are also known as Ozalids and whiteprints. 1970 E. A. D. Hutchings Survey of Printing Processes vii. 114 Development of the intermediates is carried out in an Ozalid ammonia vapour dyeline machine. 1975 J. Butcher Copy-editing v. 61 The final proof is a photographic proof (usually an Ozalid). |