22 Printer description C7085-90921
Electrical specifications
Table 1-3 lists the electrical specifications required to run the printer safely.
*
When the printer is in standby (off) mode, it continues to consume a minimal amount of energy.
Note This information is preliminary and might not be current. Please see http://www.hp.com/support/
lj4550 for current information.
Environmental specifications
Keep the printer within the environmental conditions shown in Table 1-4 for optimum performance.
Table 1-3 Electrical specifications
Item 110-volt models 220-volt models
Power requirements 100-127 V (+/- 10%)
50/60 Hz (+/- 2 Hz)
220-240 V (+/- 10%)
50/60 Hz (+/- 2 Hz)
Power consumption
(typical)
During printing
During standby
*
During PowerSave
Off
470 W (average)
80 W (average)
4500: 32 W
4550: 0 W
480 W (average)
90 W (average)
4500: 32W
4550: 0 W
Minimum recommended
circuit capacity for typical
product
4500: 16.0 A at 120 V
4550: 10.2 A at 120 V
4500: 7.1 A at 220 V
4550: 5.1 A at 220 V
Table 1-4 Environmental specifications
Item Operating
Temperature
Recommended
Allowed
20° to 26° C (68° to 79° F)
15° to 30° C (59° to 86° F)
Humidity
Recommended
Allowed
20% to 50% RH
10% to 80% RH
Altitude
Allowed 0 to 3100 m
(0 to 10,000 ft)
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