HP Color LaserJet CM1312 Service Manual - Page 90

Theory of operation, Sequence of operation continued

Page 90 highlights

Table 5-1 Sequence of operation (continued) Period Duration Purpose Remarks 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 product in readiness for a print command The product enters sleep mode when the formatter sends a sleep command, and performs color registration and the image stability control when the formatter sends those commands INTR (Initial rotation) From the time the print Prepares the photosensitive command is received until the drum for printing media is picked up 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 product The product enters the INTR period as soon as the formatter sends another print command 76 Chapter 5 Theory of operation ENWW

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Period
Duration
Purpose
Remarks
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 product in
readiness for a print
command
The product enters sleep
mode when the formatter
sends a sleep command, and
performs color registration
and the 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 product
The product enters the INTR
period as soon as the
formatter sends another print
command
Table 5-1
Sequence of operation (continued)
76
Chapter 5
Theory of operation
ENWW