Price: Yuan1280
Add Time: 2018-06-02 17:21:13



Print       Small   Middle   Big

Duplicator is an electrostatic copying machine. It is a device for copying documents by using electrostatic technology. Duplicator is a simulated way, and can only copy the document faithfully. In the future, the photocopiers of OfficeMate office partners will be developing towards digital copiers.

The digital copier will make it possible to store, transmit and edit the typesetting of the image, such as image synthesis, information addition or deletion, local enlargement or reduction, and error correction. It can connect with computers, word processors and other microprocessors through interfaces, and become an important part of local area network. Multi function, coloring, cheap and miniaturization, high speed are still important development directions.


In 1800s, James Watt, Bermingham of England, invented the Letter copying machine, the predecessor of today's digital copier.


The inventor of the copier, Chester Carlson (Chester Carlson, who translated Chester Carlson), was originally a patent lawyer, part-time researcher and inventor. His work in the New York patent office requires copying a lot of important documents. Carlson suffers from arthritis and sees copying as painless and monotonous work. This encouraged him to conduct experiments on Photoconductivity and estimated that he could make photocopies in the simplest form. Carle quickly conducted Electrophotography experiments at home kitchen, and applied for patent for process technology in 1938. He made the first copy product with zinc covered with sulphur. He used a zinc plate coated with sulphur to make the first copy machine. The word "10-22-38 Astoria" is printed on a microscopic slide, which is placed on sulphur to irradiate strong light. After the slides were taken away, the images of those words remained on the sulphur. Carson intends to sell his invention to some companies, but the process is not mature enough to achieve results.

Principle of copier

Principle of copier

In that era, a large number of duplication work was done with carbon paper or duplicator, and there was no strong demand for electronic copiers. Between 1939 and 1944, Carson was rejected by more than 20 companies, including IBM and general electric, and no one thought the copier would have a lot of market demand. In 1944, a non-profit organization in Columbo, Ohio, signed a contract with Carlson to improve his new technology. Over the next five years, many experiments were carried out to improve the technology of electronic photography. In 1947, Haloid, a small organization that built and sold paper at the time in New York, approached Battelle to obtain authorization to develop a copy machine based on this technology.

Haloid realizes that the term "electronic photography" is too complicated and not very memorable. After consulting a classic language professor at Ohio State University, Haloid and Carlson changed the name of the process to "Xerography", derived from the word "dry and write" in Greek. Haloid decided to call the new copier Xerox, and Xerox became a trademark in 1948.

On ANo



User Name Name
Comments Comment
模板编号:CmsEasy_V_487 ↓  点击购买这款模板 → 查看其他几百套精美网站模板! X