Summers—For a hard copy inkjet contract proofing system, you need a low-end PC to run the application, a high-speed connection for an incoming data file, an inkjet printer such as an Epson 4800, good proofing media, and a spectrophotometer to calibrate the output device. With a thermal system, you need a room with sufficient cooling to put the system in, and an operator to tend it. The annual maintenance contract alone for a system of this type often exceeds the entire system purchase price for a hard copy inkjet-based system. Materials are at least 10 times more expensive than those of an inkjet system. You could operate 10 remote inkjet systems for the price of one "high-end" proofing system. With a soft proofing system, you need a lightweight PC, a good Internet line, software, and a good, neutral viewing environment.