The relatively expensive printing or photocopying of color transparencies is eliminated. Xerography is now used in most photocopying machines and in laser and LED printers. Cadmium chloride is also used for photocopying, dyeing and electroplating. Xeroxlore or photocopylore is similar material circulated by photocopying; compare samizdat in Soviet-bloc countries. High-quality ZnO produced by the "French process" was added to photocopying paper as a filler. Wisch added that state law does not authorize photocopying such records. The trio then worked well into the night photocopying files from Hubbard's office. The kindly worker spent time photocopying applications and dealing with this improbable applicant. McNulty and Freamon set up the machine in a vacant apartment opposite Stringer's photocopying business. The semiconductor properties of zinc oxide make it useful in varistors and photocopying products. These films are also used in photocopying. In the 1970s, the second largest application of ZnO was photocopying. However, he discovers that this is not the case after catching Bill photocopying his bottom. Another big expansion occurred after the Second World War with the spread of photocopying.