Color Adjustment For Connected Copiers - Toshiba e-STUDIO4500c Service Manual

April, 2007 SPECIAL PROCEDURES

4.2.5 COLOR ADJUSTMENT FOR CONNECTED COPIERS

This procedure may be required for copiers after they are connected with the Copy
Connector (B328). Do this procedure only if you or the customer notices that the
color quality between the two copiers is different.
The scanner gamma curve and printer gamma curve are adjusted at the factory for
each machine. However, small differences between machines may arise due to
fluctuations in the tolerances of scanner or image processing components.
The following two adjustments calibrate these differences to within acceptable
standards.
1. Color Adjustment with Connection Kit Color Test Chart (P/N VSST9501)
This adjusts the scanner gamma curve of each machine [A], [B] connected with the
Copy Connector (B328). The scanner gamma curve is adjusted to equalize the
scanner input with the scanner output.
2. ACC (Auto Color Calibration)
This adjusts the printer gamma curves [E], [F] of each machine connected with the
Copy Connector (B328).
[A] [B]
[D]
[C]
[F]
[E]
B132D100.WMF
[A]: Scanner gamma curve – Machine 1
[B]: Scanner gamma curve – Machine 2
[C]: HDD – Machine 1
[D]: HDD – Machine 2
[E]: Printer gamma curve – Machine 1
[F]: Printer gamma curve – Machine 2
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