11/20/2022 0 Comments Spss 21 serial number![]() ![]() IBM needed this both to avoid patent infringement with Xerox (who used a photoconductor based on selenium ) and to let them use plain paper in their Copiers. IBM hired him as a Research Staff Member in 1968 to help lead development into Organic PhotoConductors, a project he came to manage and which was key to IBM's development of both the Copier I and the IBM 3800. At that time this was a significant scientific achievement and led to an opportunity to conduct more research in this area at the California Institute of Technology in Pasadena in 1967. In 1965 George Castro (PhD), authored a doctrinal thesis at Dartmouth College that demonstrated that organic materials could conduct electricity when exposed to light. ![]() At that time there were more than 40 companies competing with Xerox, but they all had to use coated paper (rather than plain paper), due to Xerox refusing to license their patent on the selenium drum technology, which was key to using plain paper. In 1970 Xerox held 70% of what was then a one billion dollar (USD) Global copier market. By 1961 Haloid (now renamed to Xerox) was making $66m USD in revenue and in 1965 their revenues were over $500m USD. Haloid invested heavily and launched the Xerox 914 in 1959. Little to assess the technology, but that assessment was negative, so IBM did not invest in the product. He eventually found an investor in the Haloid Corporation, however they struggled to finish the product and approached IBM to offer them what became the Xerox 914. IBM reportedly rejected his proposal because they felt that carbon paper was a cheaper alternative. Having made good progress by the early 1940s, he began looking for investors, approaching many office supplies companies including IBM. In the 1930s, Chester Carlson, the inventor of the photocopier, began his research into what came to be called Xerography.
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