Quadratone: A black-and-white image reproduced through the four-color process in which black is simulated by levels of gray to bring out detail and provide dimension.
Quality Control: In printing, the process of taking random samples during the press run to check the consistency of quality. In photography, the viewing of color originals under a color corrected light source to determine if highlights, middletone and shadows are correct.
Quarter Tones: A neutral gray area on a reproduction scale located between the highlight and the middletone.
Queue: see print queue.
QuickTime: Apple's format for multimedia files.