Sharp MX-4100N Service Manual page 107

• Factory target in the copy color balance adjustment (SIM 46-24)
By use of SIM 63-11, one of the following color balances can be set as the factory color balance target.
Each of the three color balances cannot be changed. (Fixed)
Factory color balance target
(DEF2)
+b* Direction of Yellow
Direction
of Green
Factory color balance target
(DEF3)
• Service color balance target in the copy color balance adjust-
ment (SIM 46-24).
For the service color balance target, an optional color balance
can be adjusted with SIM 46-21 and registered with SIM 63-7.
When, however, SIM 63-8 is executed, the color balance is set to
the same balance as the factory color balance target set with
SIM 63-11.
• Color balance target in the user color balance adjustment
This color balance is same as the service color balance target in
the copy color balance adjustment (SIM 46-24). When, therefore,
the service color balance target is changed, this target is also
changed accordingly.
(Meaning of the service color balance target gamma data and the
purpose of registration)
This procedure must be executed only when the color balance is
customized with SIM 46-21. If the color balance is not customized,
this procedure is not required.
After completion of the customized color balance adjustment (Man-
ual) with SIM 46-21 according to the user's request, use SIM 63-7
to register the service color balance target data by using adjust-
ment pattern that was printed in this mode.
By this procedure, the service color balance target is revised.
It is recommendable to keep the printed adjustment pattern with
SIM 46-21. This adjustment pattern can be used to register the
same color balance target to another machine.
It is also useful to register the service color balance target data.
Do not fold it and keep it under the circumstances which protect it
from discoloration and dirt.
The service color balance target data are basically registered
immediately after the color balance adjustment (Manual) with SIM
46-21.
If a considerable time has passed after completion of the color bal-
ance adjustment (Manual) with SIM 46-21, the color balance of the
adjustment pattern at the time of adjustment differs from the color
balance of the adjustment pattern printed after a considerable time.
Never use such a pattern for the adjustment.
SIM63-8
Factory color balance target (DEF2) =
Service color balance target/Color balance
target for the user color balance adjustment
Hue
(A)
Direction
of Red
Direction of Blue
SIM63-8
MX-5001N ADJUSTMENTS 5 – 65
SIM63-8
Factory color balance target
(DEF1)
Item
DEF1
The engine color balance adjustment target in the automatic color balance
operation is slightly shifted to Magenta. When this target is selected, the
color balance is converted into natural gray color balance by the color
correction table in an actual copy mode and print is made.
DEF2
The engine color balance adjustment target in the automatic color balance
operation is slightly shifted to natural gray color balance. When this target is
selected, the color balance is slightly shifted to Cyan by the color correction
table in an actual copy mode and print is made.
DEF3
The engine color balance adjustment target in the automatic color balance
operation is slightly shifted to Cyan. When this target is selected, the color
balance is converted into the color balance with enhanced Cyan by the color
correction table in an actual copy mode and print is made.
Factory color balance target (DEF3) =
Service color balance target/Color balance
target for the user color balance adjustment
The correctness of the service color balance target data can be
judges as follows.
When result of the color valance adjustment (Auto) with selecting
the service color balance target in SIM 46-24 is unsatisfactory or
abnormal.
In that case, the registered service target data for the color balance
adjustment (Auto) may be improper.
This may be caused when an improper or abnormal color balance
adjustment pattern was used to register the service color balance
target data for the color balance adjustment with SIM 63-7.
The color balance adjustment pattern used in registration was
made and printed by the color balance adjustment (Manual) with
SIM 46-21. This procedure may have been executed erroneously
b. Setting procedure
(Setting procedure of an optional color balance (gamma) as the
service color balance target)
1) Use SIM 46-21 (Copy color balance adjustment (manual
adjustment) mode) to print two sheets of the color patch image
(adjustment pattern).
If the color balance is shifted from the standard, an adjustment
is required. If not, an adjustment is not required. When an
optional color balance is requested by the user, make an
adjustment.
2) Enter the SIM 63-7 mode.
Factory color balance target
(DEF1) = Service color balance
target/Color balance target for the
user color balance adjustment
Content Default
DEF1