Calibration occurrence Duration Type of calibration
When you request calibration
from the control panel
(Calibrate Now).
280 seconds (4 minutes, 40
seconds)
DMAX, DHALF, CPR, drum
phase
Quick Calibration Now (HP
Color LaserJet 5550 models
only)
60 seconds (HP Color
LaserJet 5550 models)
DMAX, DHALF (4:05) (HP
Color LaserJet 5550 models)
Full Calibrate HP Color
LaserJet 5550 models only)
280 seconds (4 minutes, 40
seconds)
DMX,DHALF
Table 5-4. Cleaning timing and duration
Cleaning occurrence Duration Type of cleaning
When the printer continuously
prints (with no idle period or
spin down) for 51 pages.
either 5 seconds or 21 seconds
(5 seconds is the most common)
primary and toner charging
rollers
At intervals of between 90 and
140 pages. The printer will
finish printing the current job
before cleaning.
16 seconds ETB
ETB cleaning
During this step, all toner particles that remain on the ETB are returned to the photosensitive
drums in each print cartridge.
ETB cleaning illustrates this step.
Table 5-3. Calibration timing and duration (continued)
162 Chapter 5 Theory of operation ENWW
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