HP d640 HP D640 High-Volume Printer - User Manual (Printer and Accessories), C - Page 255
Printer Normal Operating Environment
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Using Paper Purchasing, Handling, and Storing Acclimatizing paper to the "best performance conditions" described above minimizes these adverse affects, but exposure to temperature and humidity extremes will eventually make acclimatization impossible. In extreme conditions, the paper may become unfit for use. For optimum results, keep paper supplies in moisture-proof packaging and load only the amount that will be used soon. Printer Normal Operating Environment The specifications for the printer's operating environment are defined below. Observing these environmental guidelines helps ensure trouble-free printer operation.The temperature and humidity of the paper used with the printer should be in balance with the printer's environment. • Temperature 59°F to 95°F (15°C to 35°C) • Relative Humidity 20% to 80% • Altitude 0 to 7000 feet (0 to 2150 m) Total Operating Environment Figure D-4 is a map of the operating range of the printer, showing recommended maxima and minima for temperature and humidity. Operating the printer in the A,C, D, and E areas of Figure D-4 may result in lower-quality prints. 95°F (35°C) D 85°F (30°C) Temperature A B C 65°F (18°C) 59°F (15°C) 20% E Humidity Figure D-4 Total operating environment 80% Using Paper D-19