Konica Minolta CA-100PLUS, Instruction Manual

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82
7
. Adjust the white balance.
Normally, white balance is adjusted by adjusting the cutoff and drive voltages. However, in the procedure
below, the display is adjusted so that the white generated on the display matches the target color (W) stored
in memory.
The method is explained by taking the following cases
where the measured values are as follows compared to the
target color (W).
• beam intensity of R: Higher by 20%
• beam intensity of B: Lower by 10%
• beam intensity of G: Higher by 10%
7-1. When analyzer mode (G-standard) is se-
lected
1
Adjust the G beam intensity so that the displayed
value for G changes from “110” to “100.0”.
The other value (R and B) may change somewhat if
the intensity is adjust.
2 Adjust the R beam intensity so that the displayed
value for R changes from “109.0” to “100.0”, and
adjust the B beam intensity so that the displayed
value for B changes from “81.80” to “100.0”.
When all the values for R, B and G are “100.0”, the
white displayed is the same (xyLv values are the
same) as the target color (W) stored in the selected
memory channel.
7-2. When analyzer mode (R-standard) is se-
lected
1
Adjust the R beam intensity so that the displayed
value for R changes from “120” to “100”.
The other value (G and B) may change somewhat if
the intensity is adjust.
2
Adjust the of B beam intensity so that the displayed
value for B changes from “75.00” to “100.0”, and
adjust the G beam intensity so that the displayed
value for G changes from “91.70” to “100.0”.
When all the values for R, B and G are “100.0”, the
white displayed is the same (xyLv values are the same)
as the target color (W) stored in the selected memory
channel.
* The RGB values given in the above example are based on calculations, and may not correspond to the actual display.
R
B
G
R
B
G
∆ G
120.0
90.00
110.0
R
B
G
R/G
109.0
81.80
B/G
R
B
G
∆ R ∆ G
120.0
90.00
110.0
R
B
G
B/R R/G
75.00
91.70
G/R B/G
Analog display (R/G, B/G)
Analog display ( ∆ R)
Analog display (B/R, G/R)