EPSON Stylus Pro 7400/7800/9400/9800 Revision B
Product Description Control Panel 117
CR Head Alignment
This function allows you to check by a printed pattern if the CR head is tilted or not.
A mechanical adjustment is required if the CR head is judged as tilted.
Figure 1-30.
CR Head Alignment Check Pattern
PF Head Alignment
The alignment of the PF head can be adjusted by a printed pattern that consists of
waved Bi-D patterns.
Bi-D adjustment (reference row)
Bi-D adjustment VSD1 reference row can be adjusted.
PF Head Alignment adjustment
Observe the printed pattern and judge if the PF head is tilted or not. A mechanical
adjustment is required if the PF head is judged as tilted.
Figure 1-31.
PF Head Alignment Check Pattern
Table 1-57. Nozzle Row and Ink Color
Nozzle Row
Ink Color
Stylus Pro 7800, Stylus Pro 9800 Stylus Pro 7400, Stylus Pro 9400
A Light Light Black Matte Black
G Magenta Yellow
AGAGAG
Nozzle Row
Overlapping of adjacent colors
indicates the CR head's tilting status.
Home to anti-home direction printing
discharging ink from every fouth nozzles
Anti-home to home direction printing
discharging ink from every fouth nozzles
Home to anti-home direction printing
discharging ink from the all 180 nozzles
Anti-home to home direction printing
discharging ink from the all 180 nozzles
Print mode: 360dpi, Bi-D, 240cps, VSD2, Small
Checking the CR Head for tilting
Guide line for the check point
The tilting status can be judged
by these gaps.
Print mode: 360dpi, Bi-D, 320cps, VSD1, Small
Checking the PF Head for tilting
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