MX3500N ADJUSTMENTS 6 – 52
(3) 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)
* Execute the half tone image correction forcibly. (SIM 44-26)
(Procedure)
a. When the PCL mode is supported:
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.
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.
b. When the PCL mode is not supported: (In the case of GDI
model)
Use SIM 67-25 to print the color balance adjustment sheet and
compare each process (CMY) black patch color balance and the
black patch to check the color balance.
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.
Patch B may not be copied.
Patch A must not be copied.
21-A
Printer color balance adjustment (Auto
adjustment)
a. General
The color balance adjustment (auto adjustment) is used to adjust
the print density of each color (Cyan, Magenta, Yellow, Black) auto-
matically with SIM 67-24 or the user program.
(When this adjustment is executed, the color balance adjustments
of all the print modes are revised.)
There are following two modes of the automatic color balance
adjustment.
1)
Auto color balance adjustment by the serviceman) (SIM 67-24
I used.)
2)
Auto color balance adjustment by the user (The user program
is used.) (The color balance target becomes the service tar-
get.)
The auto color balance adjustment by the user is provided to
reduce the number of service calls.
If the print color balance is lost for some reasons, the user can
use this color balance adjustment to recover the balance.
When, however, the machine has a fatal problem or when the
machine environment is greatly changed, this function does
not work effectively.
On the other hand, the auto color balance adjustment by the
serviceman functions to recover the normal color balance
though the machine environment is greatly changed. If the
machine has a fatal problem, repair and adjust it for obtaining
the normal color balance.
To perform the adjustment, the above difference must be fully
understood.
b. Note for execution of the color balance adjustment (Auto adjust-
ment)
1)
The copy color balance adjustment must have been completed
properly.
2)
Be sure to use the specified paper for color.
3)
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)
c. Adjustment procedure
(Auto color balance adjustment by the serviceman)
1)
Enter the SIM 67-24 mode.
2)
Press [EXECUTE] key. (A3 or 11" x 17" paper is automatically
selected.)
The color patch image (adjustment pattern) is printed out.
Max
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
C
M
Y
Bk
High density
Low density
Fig. 1 PG image
1) The max. density
section is not blurred.
3) Patch for each of C, M, Y, BK
• The patch density is identical between patches or not reversed.
• The patch density is changed gradually.
2) Patch C or D of each of Y, C, M,
and BK is very slightly copied.
Patch A of each of Y, M,
C, and BK are not copied.
SIMULATION
NO.67-24
TEST
PRINTER ENGINE HALFTONE AUTO ADJUSTMENT MODE
EXECUTE
0
CLOSE
PRESS [EXECUTE] TO PRINT THE TEST PATCH.
(PLEASE USE SPECIFIED TYPE OF A3 OR 11”
17” SIZE PAPER
FOR THIS ADJUSTMENT
Содержание MX 3501N - Color Laser - Copier
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