Before that, in order to save money, Carlson copied down textbooks and various reference materials every time he went to the library. At work, Carlson often copies a lot of materials. At that time, copying documents mainly relied on photography and copying technology, which not only cost a lot, but also delayed time and brought a lot of inconvenience to work. Carlson often thinks: "If there is such a machine, just plug in the power supply and press the button, it will be able to copy it quickly and well!"
Chester Carlson and his first copier, Carlson, had the idea of invention, and immediately went to the library in an orderly way to consult a lot of information on copying technology in detail in order to determine their own research direction. In the past four years, Carlson has chosen a research direction for himself: replication by photoelectric effect, after repeated comparison with the previous photographic replication technology and thermal conductivity replication technology.
After the research direction was determined, Carlson began to devote himself to research. Although poor Carlson had no laboratory and had to do experiments in his own small kitchen, he persisted in completing one experiment after another. Finally, it was worth it.19381kloc-0/On October 22nd, Carlson's "electrostatic copier" was made. Carlson uses photoelectric effect to project images or texts onto a semiconductor plane. After a few seconds, the part with the image or text will be charged with static electricity because the black ink blocks the light. Then a layer of reflective powder is coated on the plane, and the charged area quickly absorbs the reflective powder, thus obtaining a powder diagram. Finally, transfer the chalk drawing to white paper, heat and fix it, and finally reproduce the same handwriting on the paper. Carlson's first experiment was successful.
However, Carlson did not expect that his invention came out after many twists and turns. 1949, the world's first dry-plate photoelectric copier was put into production by Harmander Company of the United States. 1959, Harmander Company introduced Carlson's mature invention-Xerox 9 14 electrostatic copier. Xerox copier was a great success as soon as it was launched. Hamand Company changed its name to Xerox Copier Company, from a small company to a multinational company. Now, multifunctional copiers have appeared one after another. They can copy and enlarge images with different sizes of paper as needed, and some can even make color copies, but we will never forget the original invention full of Carlson's painstaking efforts.
Chester Carlson and his first copier.