Table 1-1 Operation sequence (continued)
Period Duration Purpose
Print preparation From the time the product
receives a product command
until paper enters the print
zone.
Prepares the product for a print job.
●
The printbar leaves the capping state as the service sled
moves away from the printbar.
●
If needed, some servicing occurs.
●
The printbar lowers to the printing position. The media
type and printing mode determine the print zone height.
● The product picks media from one of the input trays.
●
Every page from Tray 1 is scanned. For Tray 2 and
optional Tray 3, the product performs media edge
detection after printing the first sheet after the main or
optional tray is loaded. The last sheet of each job is also
scanned if at least five sheets have been printed.
●
The product monitors environmental conditions. The
product can slow the print speed if conditions are
significantly different than a normal office environment
(23° C (73.4° F), 50% relative humidity).
●
The formatter PCA processes print data and transmits the
data to the printbar.
Printing From the end of the
preparation period until the
last sheet is delivered.
Processes the print job.
● As the page travels through the print zone, the printbar
applies ink to the page.
●
Simplex print job–the page moves up, over the printbar,
and out to the output bin (face-down).
●
Duplex print job–the page moves up until the trailing edge
is 40 mm (1.5 inches) past the star-wheel jam reflective
sensor, then it reverses direction down through the duplex
path underneath the maintenance ink module, and then it
reenters the print zone where the printbar applies ink to
the second side.
●
The process continues until all the pages of the print job
are completed. The process can be interrupted by
occasional nozzle presence detection and servicing
events if the job includes many pages.
4 Chapter 1 Theory of operation ENWW
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