Sharp MX-4100N Service Manual page 123

20-T Copy color balance adjustment
(Automatic adjustment for each dither)
a. General
This adjustment is to adjust the color balance and the density in the
monochrome mode, the heavy paper mode, the black text, the
color text edge, the line image edge, the text mode, and the map
mode.
This simulation is used to improve image quality in these modes
and images.
b. Adjustment procedures
1) Enter the SIM46-54 mode.
2) Press [EXECUTE] key. (A3 or 11" x 17" paper is automatically
selected.) The color patch image (adjustment pattern) is
printed.
3) Set the color patch image (adjustment pattern) printed in the
procedure 2) on the document table so that the thin lines on
the printed color patch image (adjustment pattern) are on the
left side. Place 5 sheets of white paper on the printed color
patch image (adjustment pattern).
4) Press [EXECUTE] key.
The color balance adjustment is automatically performed.
The adjustment pattern is printed out. Check it for any abnor-
mality.
5) Press [OK] key.
The list of the adjustment items (for each dither) is displayed.
6) Select an adjustment item (for each dither).
Select item
(Mode/Image)
Heavy Paper Adjustment item to improve the color balance in the
*1 heavy paper mode
Black Edge Adjustment item (K) to improve the reproduction of lines,
text density, and thickness
Color Edge Adjustment item (Color) to improve the reproduction of
lines, text density, and thickness
B/W Adjustment item to improve the density and gradation in
the monochrome mode
Color Ed Adjustment item to improve the color balance in the text
mode and the map mode.
*1: When performing adjustments in the heavy paper mode,
load paper in the manual paper feed tray.
7) Press [EXECUTE] key. (A3 or 11" x 17" paper is automatically
selected.)
The color patch image (adjustment pattern) is printed out.
In the monochrome mode, only the monochrome pattern is
printed.
8) Set the color patch image (adjustment pattern) printed in the
procedure 7) on the document table so that the thin lines on
the printed color patch image (adjustment pattern) are on the
left side. Place 5 sheets of white paper on the printed color
patch image (adjustment pattern).
Content
MX-5001N ADJUSTMENTS 5 – 81
9) Press [EXECUTE] key.
The color balance adjustment is automatically performed, and
the machine goes to the state of procedure 6).
To complete the adjustment and enable the adjustment result,
press [OK] key.
10) Make a copy, and check the copy image quality.
NOTE: Use SIM46-52 to reset the adjustment values to the default
values.
ADJ 21
Printer color balance/density
adjustment
(1) Note before execution of the printer color balance/density
adjustment
(Requisite condition before execution of the printer color balance/
density adjustment)
Before execution of the printer color balance/density adjustment,
the copy color balance/density adjustment must have been com-
pleted properly.
(This adjustment is required in the following cases.)
* Basically same as when the copy color balance/density adjust-
ment is required. Refer to the page of the ADJ 20 print color bal-
ance/density adjustment.
* After the copy color balance/density adjustment.
(2) Printer color balance/density check
(Note)
Before checking the copy color balance and the density, be sure to
execute the following procedures in advance.
* Execute the high density image correction (Process correction)
forcibly. (SIM 44-6)
* The half-tone image correction is forcibly executed. (SIM 44-26)
(Method 1)
Execute SIM 64-5 to print the print test pattern.
Set each set value to the default and press [EXECUTE] key. The
print test pattern is printed.