Printer Color Balance Adjustment (Manual) - Sharp MX-2300 G Service Manual

(Method 2)
By printing the color balance adjustment sheet with SIM 67-25
and comparing each process (CMY) black patch color balance
with the black patch, the color balance adjustment can be
checked more precisely.
High density
Y
M
C
Bk
CMY
mixed
color
Max
O N M L K
1) The max. density
section is not blurred.
4) Patch for each of C, M, Y, BK
• The patch density is identical between patches or not reversed.
• The patch density is changed gradually.
(Method 3)
(This method cannot be used when the machine supports only
the GDI mode.)
When the PCL mode is supported, use SIM 64-5 to print the
print test pattern.
Set each set value to the default and press [EXECUTE] key,
and the print test pattern is printed out.
The print density must be changed gradually from the lighter
level to the darker level. The density changing direction must
not be reversed. The density level of each color must be
almost at the same level.
When the factory target is selected in the procedure 4) and the
auto adjustment is executed but a satisfactory result is not
obtained on the color balance and the density, use SIM 67-26
to change the factory color balance target and repeat the pro-
cedures from 1).
If a satisfactory result is not obtained with the above proce-
dures, execute the manual color balance adjustment (ADJ
20C).
When the service target is selected in the procedure 4) and the
auto adjustment is executed but a satisfactory result is not
obtained, execute the manual color balance adjustment (ADJ
21C).
7) Cancel SIM 67-25.
For the machine which supports only the GDI mode, the
adjustment is completed.
8) Use SIM 44-26 to execute the half tone image correction (forc-
ible execution).
Enter the SIM 44-26 mode, and press [EXECUTE] key.
[EXECUTE] key is highlighted and the operation is started.
SIMULATION NO.44-26
TEST
HALF TONE DENSITY CORRECT EXECUTION
TOUGH [EXECUTE] THEN EXECUTION START.
It takes several minutes to complete the operation. After com-
pletion of the operation, "COMPLETE" is displayed.
Low density
J I H G F E D C B A
3) Patch C or D of each of Y, C, M,
and BK is very slightly copied.
2) Patch A of each of Y, M,
C, and BK are not copied.
0
CLOSE
EXECUTE
MX-2300/2700 N/G ADJUSTMENTS 6 – 53
(Normal end (Auto transition))
SIMULATION NO.44-26
TEST
HALF TONE DENSITY CORRECT EXECUTION
[S_VALUE]
#1: 907, #2: 902, #3: 909, #4:921, #5:936
#6: 347, #7:992, #8:1047, #9:1081, #10:1137
#11:1183, #12:1222, #13:1261, #14:1283,#15:1260
K C M
Y
(Abnormal end (Auto transition))
SIMULATION NO.44-26
TEST
HALF TONE DENSITY CORRECT EXECUTION
[S_VALUE]
#1: ERR, #2: ERR, #3: ERR, #4: ERR, #5: ERR
#6: ERR, #7: ERR, #8: ERR, #9: ERR, #10: ERR
#11: ERR, #12: ERR, #13: ERR, #14: ERR,#15: ERR
K C M
Y
9) After completion of the operation, cancel SIM 44-26.
10) Use SIM 64-5 to print the print test pattern and check the print
color balance and the density again.
Set each set value to the default and press [EXECUTE] key. The
print test pattern is printed out.
If a satisfactory result on the print color balance and the density is
not obtained with the automatic adjustment, execute the manual
adjustment (SIM 67-25) (ADJ 21B).
21-B Printer color balance adjustment (Manual
adjustment)
This adjustment is required in the following cases.
* When the copy color balance/density adjustment is required.
Refer to the page of the ADJ print color balance/density adjust-
ment.
* After execution of the copy color balance/density adjustment.
a. General
The color balance adjustment (Manual adjustment) is used to
adjust the copy density (15 points for each color) of each color
(CMYK) manually when the automatic adjustment cannot obtain
the specified result or when a fine adjustment is required or when
the user requests to change (customize) the color balance.
In this adjustment, only the patch of each color is adjusted in the
above case where the automatic adjustment cannot obtain the
specified result.
When the color balance is lost, execute the automatic color bal-
ance adjustment in advance and execute this adjustment for better
efficiency.
b. Note for execution of the color balance adjustment (Manual
adjustment)
1) The copy color balance adjustment must have been completed
properly.
2) When setting the color patch image adjustment pattern on the
document table, place 5 sheets of white paper on the color
patch image adjustment pattern.
3) Be sure to use the specified paper for color.
4) Before execution of the image quality check and the image
quality adjustment, be sure to execute the following correc-
tions forcibly to set the image forming section to the optimum
state.
* Execute the high density image correction (Process correc-
tion) forcibly. (SIM 44-6)
* Execute the half tone image correction forcibly. (SIM 44-26)
0
CLOSE
1/1
EXECUTE
0
CLOSE
1/1
EXECUTE