Sharp AR-BC260 Service Manual page 124

b. Setup procedure
(Procedure to set the an optional color balance (gamma) as
the service color balance target)
1) Two sheets of color patch image (adjustment pattern) are out-
putted in the copy color balance adjustment (manual adjust-
ment) (SIM 46-21). (ADJ 11C)
At that time, when the color balance is shifted from the stan-
dard, an adjustment is required. If not, there is no need to
adjust.
If an optional color balance is required according to the user's
request, an adjustment is required.
2) Enter the SIM 63-7 mode.
3) Press the [SETUP] key.
4) Set the color patch image (adjustment pattern) paper properly
adjusted and printed in the copy color balance adjustment
(manual adjustment) (SIM 46-21) (ADJ 11C) on the original
table.
The color patch image (adjustment pattern) printed by SIM 64-
2 may be used. In this case, check that the printed image is
proper. (The other color patch images (adjustment patterns)
printed by another machine may be used.)
Set the paper on the original table so that the darker density
side comes on the left side. Then place 5 sheets of white
paper on the color patch image (adjustment pattern).
If it is difficult to adjust the color balance adjustment (Manual) with
SIM 46-21 satisfactorily level, do not register the service target
gamma data with SIM 63-7.
5) Press the [EXECUTE] key.
The color patch image (adjustment pattern) is read.
6) Press the [REPEAT] key, set the second color patch image
paper, and perform procedure 5) again.
The color balance (gamma) target setup level of each color can be
checked with K/C/M/Y keys.
The setup level values must be in the ascending sequence of B –
O. If there is no change or the sequence is reversed, it is judged
as an abnormality.
In case of an abnormality, resolve the problem and check again.
7) Press the [OK] key.
The color balance (gamma) corresponding to the color patch
image (adjustment pattern) printed in the copy color balance
adjustment (manual adjustment) (ADJ 11C) is set as the ser-
vice target.
(Method to set the color balance of the service color and the
color balance target for the user color balance adjustment to
the same color balance of the factory color balance target)
This adjustment must not be performed when the copy color bal-
ance is adjusted to the unique color balance according to the
user's request with SIM 46-21 and the unique color balance is reg-
istered (set) as the color balance target of the service color.
∗ When the factory color balance target is changed with SIM 63-
11, this adjustment must be executed without fail.
1) Enter the SIM 63-8 mode.
2) Press the [EXECUTE] key.
3) Press the YES key.
The color balanced target of the service color and the color bal-
ance target for the user color balance adjustment are set to the
color balance same as that of the factory color balance target.
ADJ 11D
NOTE for SIM 46-1 and 46-2:
The major purpose of these simulations is to delete background
copy simply.
SIM 46-1 and 46-2 are used to adjust the copy density in the low-
density area, and they do not affect the density in the high-density
area.
Note that the tone and the color phase may be changed greatly if
the set value is changed greatly.
When an extreme background copy is produced, use ADJ 11C
color balance adjustment (manual adjustment) (SIM 46-21)
instead of this procedure.
The adjustment result of SIM 46-1 is reflected evenly to all the
color copy modes.
The adjustment result of SIM 46-2 is reflected evenly to all the
monochrome copy modes.
1) Enter the SIM 46-1 or 46-2 mode.
2) Select the copy mode to be adjusted with the scroll key.
3) Enter the adjustment value with the 10-key, and press the
AR-BC260 SETTING AND ADJUSTMENTS 8 - 31
Copy density adjustment in low-
density area (Normally unnecessary
to adjust.)
[OK] key.
To increase the density in the low-density area, set a greater
adjustment value. To reduce the density, set a lower adjust-
ment value. The adjustment in the low-density area can be
adjusted individually for each copy mode.
The greater the set value is, the greater the density in the low-
density area is, and vice versa. (The density in the high-den-
sity area is not changed.)