Toshiba 5520c, 6520c 2.3 To Improve the Reproducibility of Gray

e-STUDIO5520C/6520C/6530C © 2008 TOSHIBA TEC CORPORATION All rights reserved
2-16
2. Copier-specific Adjustments
2.3 To Improve the Reproducibility of Gray
Before the adjustment After the adjustment
Another color (M) is blended in the gray area. No undesired color is blended. A clear copy
image is obtained.
 Explanation
When an original containing gray is copied, another color may be blended in the gray area. Perform image quality
control, automatic calibration, color adjustment (color balance adjustment or RGB adjustment) and color density
adjustment, in order to avoid this problem (or to obtain an achromatic color, for instance).
 Procedures
* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed
below. You can use one procedure in conjunction with another. But if this changes the image quality more
than required or loses the effectiveness of the adjustment, restore the settings made in the previously used
procedure to the original ones. Then use other procedures.
* Both the service technician and the user can use procedures (1) and (2).
* Only the service technician must use procedure (3).
(1) Perform automatic calibration to correct variations in the copy density.
* For further information regarding the adjustment procedures, refer to procedure (1) in 2.2 To Closely
Match the Color Balance of the Original.
* [ADMIN] is selected from among the [CALIBRATION DISPLAY LEVEL] options by default. In other
words, an administrator is authorized to operate automatic calibration. But the [USER] option can also be
selected to allow the user to operate it. Refer to the User Functions Guide for further information
regarding how to select the [CALIBRATION DISPLAY LEVEL] option.
After performing automatic calibration, copy and check the copy image quality.
If further image quality adjustments are still necessary, use the next procedure.