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Chester Carlson

Chester Carlson, an American physicist and lawyer, will be remembered as the man who invented the photocopier. Thanks to

this great man, xerography is now used in companies all over the world.

Chester Carlson was born on February 8, 1906, in Seattle, Washington. About one year after he was born, his father became very sick with tuberculosis. He also developed arthritis in his spine. Carlson's father spent most of his life lying in bed, coughing and feeling upset with his poor and sickly life.

Not long after he was born, Carlson's family moved from Seattle and stayed a short time at a few places in California, Arizona, Mexico, and finally stayed in San Bernadino, California. It was there that Carlson went to grammar school and high school. Then he went to Riverside Junior College for three years, working and studying at the same time. Then he transferred schools to Advanced Standing at California Institute of Technology and got his Bachelor of Science degree in Physics in 1930.

While going to school and working, Carlson became interested in the work of other inventors, especially Edison. As he read about the other successful inventors, he realized that making an invention would be a


A year later, Carlson took a better-paying job in a small patent department of the P. R. Mallory Company, which had an executive office in New York. He stayed there until the end of 1945, when he was the head of the patent department and had three or four men working for him.

On October 22, 1938, Carlson and another physicist named Otto Kornei were experimenting with sulphur on a zinc plate. On a glass microscope slide, they wrote '10-22-38 ASTORIA .' They closed the shade to make the room very dark. Then they rubbed the plate quickly with a handkerchief to make an electrostatic charge. After that, they laid the slide on the plate and put it under a bright incandescent lamp for a few seconds. Then the slide was removed and lycopodium powder was sprinkled on the plate with sulphur. Blowing on the plate to get rid of the extra powder, Carlson and Kornei found almost a perfect copy of "10-22-38 ASTORIA' in the powder. They repeated the experiment many times to make sure it would work again. Then they made permanent copies by transferring the powder copies to wax paper, and heated them to melt the wax. It worked! They went out to lunch to celebrate!

After Carlson graduated, he started working as a Research Engineer at the Bell Telephone Laboratories in New York. He thought that was boring, so he asked to work in the patent department instead. He liked this new job because he could see a lot of new i

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Approximate Word count = 953
Approximate Pages = 4 (250 words per page double spaced)


  

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