Answer:
Paper.
Explanation:
Chester Carlson was an American patent attorney,inventor and physicist born on the 8th February, 1906 in Seattle, United States of America.
Carlson is famously known for the invention of electrophotography (xerography), which is typically a process that is used in modern photocopying machines to create high quality text-based and graphic informations on paper.
Between 1932 and 1938, Chester Carlson developed a process that enabled a "picture" of a document to be taken and then reproduced on another paper.
