Sequence of operation
Table 1-1 Sequence of operation
Period Duration Purpose Remarks
WAIT From the time the power is
turned on or the door is
closed, until the printer is
ready for a print operation
Clears the potential from the
drum surface, adjusts the
drum phase, and cleans the
ITB
Detects the cartridge
presence and environment;
completes any required
calibration (color registration
control and image stability)
STBY (Standby period) From end of the WAIT or
LSTR period until either the
print command is received
from the formatter or the
power is turned off
Maintains the printer in
readiness for a print
command
The printer enters sleep mode
when the formatter sends a
sleep command, and
performs color registration
and image stability control
when the formatter sends
those commands
INTR (Initial rotation) From the time the print
command is received until the
media is picked up
Prepares the photosensitive
drum for printing
PRINT From the end of INTR period
until the fuser paper sensor
detects the trailing edge of
paper
Forms the images on the
photosensitive drum and
transfers the toner image to
the print media
Performs image stabilization
at a specified print interval or
at specified times
LSTR (Last rotation) From the end of the PRINT
period until the delivery motor
stops rotating
Moves the printed sheet out
of the printer
The printer enters the INTR
period as soon as the
formatter sends another print
command
4 Chapter 1 Theory of operation ENWW
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