Epson Stylus Pro 7400 - Ink Mark Sensor Adjustment for Auto Nozzle Check

EPSON Stylus Pro 7400/7800/9400/9800 Revision B
Adjustment Basic Adjustment 331
5.3.13 Ink Mark Sensor Adjustment for Auto Nozzle Check
This menu automatically adjusts the Ink Mark Sensor scanning timing (drive pulse of
the CR and PF motors), and also checks the sensor for dot-missing detection
sensitivity. Since the scanning timing varies by unit-to-unit according to the CR and PF
motors’ characteristic, the timing adjustment is made by storing a difference
(correction value) between standard values (pulses) and actually measured values.
First the printer automatically prints a pattern and makes the timing adjustment in both
main and sub scanning directions using the pattern. Then two patterns (with and
without dot-missing) are printed to check the dot-missing detection sensitivity of the
sensor.
 Paper Used
 Size: 24” (Stylus Pro 7400/7800)
44” (Stylus Pro 9400/9800)
 Type: Doubleweight Matte Paper
 Procedure
1. Turn the printer ON.
2. Start up the Adjustment Program and select [Ink Mark Sensor Adjustment for
Auto Nozzle Check].
3. Select the [Sensor Adjustment] and click the [Run] button. An adjustment
pattern will be printed.
The Ink Mark Sensor starts to scan the printed pattern and when finished, the
printer automatically conducts the timing adjustment and prints the result.
Figure 5-48. [Ink Mark Sensor Adjustment for Auto Nozzle Check] Screen
Figure 5-49. Adjustment Pattern