The machine converted the signals into a light beam that varied in intensity as it mowed back and forth across photosensitive paper, producing lines of light and dark dots.
On top of the gold is a photosensitive material that becomes insoluble when exposed to light.
If you are photosensitive, you may develop a rash if you're taking certain medications, including sulfa drugs.
Canon Announces the Issuance of a General Exclusion Order by the U.S. ITC Canon Inc. announced today the issuance of a General Exclusion Order by the U.S. International Trade Commission in Investigation No. 337-TA-829, pertaining to certain toner cartridges and their photosensitive drums sold for use in Canon and Hewlett Packard laser beam printers.
July 3, 2013 - Business Wire via Yahoo! Finance