Canon BJ-W7000 Service Manual page 60

Ee CHAPTER 2 OPERATION mal
2. Operation
The following describes multi-pass print in the
3-pass print mode.
Reference
Though the bubble jet cartridges used on this
printer are configured to have 128 nozzles, 120
nozzles are actually used during printing.
1) Aband of about 2.8 mm in width is printed by 1/
3 of the innermost nozzles when the carriage
moves backwards.
>
About
2.8mm 120
nozzles
width
Nozzle
Figure 2-108
2) The media is fed about 2.8 mm, and the car-
riage moves forward to the left edge of the
media.
t
Figure 2-109
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3) Aband of about 5.6 mm in width is printed by 2/
3 of the innermost nozzles when the carriage
moves backwards.
4
About
5.6mm
Figure 2-110
4) The media is fed about 2.8 mm, and the car-
tiage moves forward to the left edge of the
media.
t
Figure 2-111
5) Aband of about 8.4 mm in width is printed by all
of the nozzles when the carriage moves back-
wards.
+
About
8.4mm
Figure 2-112
6) Steps 4) and 5) are repeated to print the entire
image.
2-13