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During the same year Caxton moved its operations to Doornfontein in Johannesburg. In 1968, Caxton again changed ownership, this time to Felstar Publications. During the same year, The Germiston Eagle was introduced as a weekly supplement to the South African Jewish Times. This was the forerunner of all community newspapers in South Africa.
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Carbon tissue was a stock item in Europe and the US well into the 20th century, [1] but by the 1950s carbon printing was very rare and supplies for it became an exotic specialty item. Some companies produced small quantities of carbon tissue and transfer papers for monochrome and three-color work until around 1990.
Carbon black (with subtypes acetylene black, channel black, furnace black, lamp black and thermal black) is a material produced by the incomplete combustion of coal tar, vegetable matter, or petroleum products, including fuel oil, fluid catalytic cracking tar, and ethylene cracking in a limited supply of air.
An A4-size Gestetner offset-printing machine. The Gestetner is a type of duplicating machine named after its inventor, David Gestetner (1854–1939). During the 20th century, the term Gestetner was used as a verb—as in Gestetnering. [1] The Gestetner company established its base in London, filing its first patent in 1879.
Manual card imprinter Another type of manual card imprinter (Janome M220) with a smaller sliding handle. A credit card imprinter, colloquially known as a ZipZap machine, click-clack machine or Knuckle Buster, is a manual device that was used by merchants to record credit card transactions before the advent of payment terminals.
Carbon black particle size is between 10 and 100 nm, while the surface particle size is between 20 and 1,500 m 2 /g. Generally speaking, small carbon black particles with a high surface area are darker, have higher viscosity and lower wettability, are harder to disperse, retain greater conductivity and absorb UV radiation well. [1] [2] [3] [7] [8]
South Africa: South African Bank Note Company (SABN) 1961 South African Reserve Bank [Note 8] [1] South Korea: Korea Minting and Security Printing Corporation (KOMSCO) 1951 Government of South Korea [1] Spain: Fábrica Nacional de Moneda y Timbre (FNMT) 1893 (1940) Ministry of Economy [1] Sri Lanka: De La Rue Lanka Currency & Security Print ...