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Before the widespread adoption of xerographic copiers, photo-direct copies produced by machines such as Kodak's Verifax (based on a 1947 patent) were used. A primary obstacle associated with the pre-xerographic copying technologies was the high cost of supplies: a Verifax print required supplies costing US$0.15 in 1969, while a Xerox print ...
The cores of copying pencils, which appear to have been introduced in the 1870s, were made from a mixture of graphite, clay, and aniline dye. By the late 1870s, an improved method for moistening pages in copying books had been invented, and by the late 1880s it had been widely adopted.
Chester Floyd Carlson (February 8, 1906 – September 19, 1968) was an American physicist, inventor, and patent attorney born in Seattle, Washington.. Carlson invented electrophotography (now xerography, meaning "dry writing"), producing a dry copy in contrast to the wet copies then produced by the Photostat process; it is now used by millions of photocopiers worldwide.
People who operated these machines were known as photostat operators. It was the expense and inconvenience of photostats that drove Chester Carlson to study electrophotography. In the mid-1940s Carlson sold the rights to his invention – which became known as xerography – to the Haloid Company and photostatting soon sank into history.
One of the two copiers that were present that day caught fire. [ 1 ] The 914 was one of the most successful Xerox products ever, and was a significant component of Xerox's revenues in the mid-1960s, with one author estimating that the machine accounted for two thirds of the company's revenue in 1965, with income generated of $243M.
The process was called mimeography, and a copy made by the process was a mimeograph. Mimeographs, along with spirit duplicators and hectographs , were common technologies for printing small quantities of a document, as in office work, classroom materials, and church bulletins.
For more stories about products made in America, please sign up for our free ... as 125 workers were laid off there in 2019 so Newell Brands, the company's owner since 2017, could move production ...
Some are mechanical and some are chemical. There is naturally some overlap with printing processes and photographic processes, but the challenge of precisely duplicating business letters, forms, contracts, and other paperwork prompted some unique solutions as well. There were many short-lived inventions along the way.