Other methods of copying included cyclostyle, spirit duplicator, photocopying, and xerography. The Battelle Memorial Institute perfected xerography, resulting in the company Xerox. Dry Toner models use a process similar to xerography in photocopiers. Xerography is now used in most photocopying machines and in laser and LED printers. He helped to develop xerography pioneered by Chester Carlson. With the debut of the 914, Xerox was granted 15-year exclusive patent rights to xerography. Photoconductive chalcogenide glasses are used in xerography. Xerography is standard copy machine technology using toner on bond paper. When large size xerography machines became available, 1975, they replaced the older printing methods. In 1960, this resulted in Disney switching to xerography, that replaced the traditional hand-inking. She invent three xerography techniques, named transcapsa, photo-transcapsa, and chromacapsa. With it, he discovered the basic principle of modern xerography copy machine technology. Static electricity is commonly used in xerography, air filters, and some automotive coating processes. The latter were also the first Soviet animated movies to introduce xerography. Small businesses could lease it on a monthly basis, making xerography affordable to startup companies.