EPSON Stylus Pro 7400/7800/9400/9800 Revision B
Adjustment Basic Adjustment 341
5.3.22 Colorimetric Calibration (Color ID)
5.3.22.1 Adjustment Overview
This adjustment is required after replacing any of the following parts.
PRINT HEAD
BOARD ASSY., MAIN
BOARD ASSY., SUB
P/S BOARD ASSY.
PURPOSE
By registering/controlling information concerning the ink droplets, this product
improves calibration accuracy and ensures stable color quality. (Difference in color
among individual products or each mode is reduced.) (Refer to “2.5 Colorimetric
Calibration (Color ID) Overview” (p.169))
PRINCIPLE
The calibration is performed by measuring a printed correction pattern with a
calibrator. ID information that is calculated based on the acquired color values (L*, a*,
b*) is transmitted to the printer driver, and the printer driver corrects the dot generation
amount for each dot size x each color in the print data.
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