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MX-B382/B402  ADJUSTMENTS  4 – 26

When set to DISABLE, the menu of the user auto calibration (auto-
matic adjustment of copy density and gradation) is not displayed in
the user program mode.
(Auto calibration by the user (Auto copy density and gradation
adjustment))
1)

Enter the system setting mode.

2)

Enter the copy setting mode.

3)

Press the auto calibration key.

4)

Press [EXECUTE] key.
The patch image (adjustment pattern) is printed out.

5)

Set the patch image (adjustment pattern) printed in procedure
4) on the document table.
Set the patch image so that the light density area is on the left
side in the center reference.
At that time, place 5 sheets of white paper on the above patch
image (adjustment pattern).

6)

Press [EXECUTE] key, and the copy adjustment is executed
automatically. After completion of the adjustment, the display
returns to the original operation screen.

 

(Requisite condition before execution of the printer density and gra-
dation adjustment)
Before execution of the printer density and gradation adjustment,
the copy density and gradation adjustment must have been com-
pleted properly.
(This adjustment is required in the following cases.)
* Basically same as when the copy density and gradation adjust-

ment is required.

* After the copy density and gradation adjustment.
(2) Printer density and gradation check
(Note)
Before checking the copy density and gradation, 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.

The print density must be changed gradually from the lighter level
to the darker level. The density changing direction must not be
reversed.

(Method 2)
Use SIM67-25 to print the adjustment sheet to check that the
adjustment is proper or not.

The print density must be changed gradually from the lighter level
to the darker level. The density changing direction must not be
reversed.
Patch A or B slightly printed.

 

a. General
The printer density and gradation adjustment (auto adjustment) is
used to adjust the printer density and gradation automatically by
SIM67-24 or the user program.
(When this adjustment is executed, the printer density and grada-
tion adjustments of all the print modes are revised.)

There are following two modes in the auto adjustment.
1)

Auto printer density and gradation adjustment by the service-
man (SIM 67-24 is used.)

2)

Auto printer density and gradation adjustment by the user (The
user program mode is used.)
The auto printer density and gradation adjustment by the user
is provided to reduce the number of service calls.
It is used by the user to reset the printer density and gradation
to the normal levels when any trouble occurs in the printer den-
sity and gradation.
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 printer density and gradation
adjustment by the serviceman functions to recover the normal
printer density and gradation though the machine environment
is greatly changed. If the machine has a fatal problem, repair
and adjust it for obtaining the normal printer density and grada-
tion.
To perform the adjustment, the above difference must be fully
understood.

1)

The copy density and gradation adjustment must have been
completed properly.

2)

When setting the adjustment pattern on the document table in
the automatic density and gradation adjustment procedures,
place 5 sheets of white paper on the adjustment pattern in
order to prevent back copying and adverse effects of paper
wrinkles as far as possible. Also note that the adjustment pat-
tern should be placed to the center reference.

3)

The scan image off-center adjustment and the engine image
off-center adjustment must have been properly adjusted.

Q (Max)

A

B

C D

E

F

G H

I

J

K

L

M N O P

High density

Low density

Patch A or B slightly printed

The max density patch is not blurred

The patch density is identical between patches or not reversed.

The patch density is changed gradually.

MX-B382/B402  ADJUSTMENTS  4 – 27

c. Adjustment procedure
(Auto printer density and gradation adjustment by the serviceman)

YES

NO

Printer density and gradation adjustment (Automatic adjustment) procedure
flowchart (SIM67-24)

Start

Execute ADJ13A (Printer density and gradation adjustment)
(Automatic adjustment).

Enter the SIM67-24 mode, and select A4 (11" x 8.5")
paper.

Press [EXECUTE] key.
(The adjustment pattern is printed.)

Set the adjustment pattern on the document table.
Press [EXECUTE] key. (The adjustment pattern is
scanned, and the adjustment is automatically per-
formed to print the check pattern.)

Check the printed check pattern for any streaks or
unclear copy. (*3)

Press [OK] key. (The initial setting of the half tone
image correction is automatically performed.)

Cancel SIM67-24.

Check the self print check pattern to check the
printer density and gradation adjustment. (*1)

Use SIM64-5 to print the self print
check pattern, and check the printer
density and gradation.

Are the printer

density and gradation

at the satisfactory

level?

End

Execute ADJ13B (Printer density and gradation
adjustment) (Manual adjustment). (SIM67-25) (*2)

*1:
If the initial setting of the half tone image correction is not
properly adjusted, satisfactory printer density and gradation
cannot be obtained. In this case, check the print engine for
any problems.
*2:
If satisfactory printer density and gradation are not obtained
with ADJ13B (Printer density and gradation adjustment)
(Manual adjustment) (SIM67-25), check the print engine for
any problems.
*3:
If there is any streak or unclear copy on the printed check
pattern, check the print engine for any problems.

MX-B382/B402  ADJUSTMENTS  4 – 28

1)

Enter the SIM 67-24 mode.

2)

Press [EXECUTE] key. (A4 or 11" x 8.5" paper is automatically
selected.)
The patch image (adjustment pattern) is printed out.

3)

Set the patch image (adjustment pattern) paper printed in pro-
cedure 2) on the document table.
Set the printed patch image (adjustment pattern) on the docu-
ment table. Place the patch image so that the fine lines are on
the left side in the center reference. At that time, place 5
sheets of white paper on the printed patch image (adjustment
pattern).

4)

Press [EXECUTE] key. 

The printer density and gradation adjustment is automatically
executed and prints the check patch image. Wait until the
operation panel shown in the procedure 5) is displayed.

5)

Press [OK] key on the operation panel.

Remark:
After pressing [OK] key, the initial setting of the half tone image
correction is started. During the operation, "NOW REGISTER-
ING THE NEW TARGET OF HALFTONE" is displayed. This
operation takes several minutes.
After completion of the operation, "PLEASE QUIT THIS
MODE" is displayed.
Do not cancel the simulation until "PLEASE QUIT THIS
MODE" is displayed.

6)

Check the printer density and gradation.
There are three methods to check the printer density and gra-
dation.
(Method 1)
Check to insure that the printed check patch image is within
the following specifications.

The print density must be changed gradually from the lighter
level to the darker level. The density changing direction must
not be reversed.
Patch C or D slightly copied.
Patch A must not be copied.
If there is any abnormality, adjust again.

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PRINTER CALIBRATION

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Q (Max)

A

B

C D

E

F

G H

I

J

K

L

M N O P

High density

Low density

Patch A must not be copied.

The max density patch is not blurred

Patch C or D slightly copied.

The patch density is identical between patches or not reversed.

The patch density is changed gradually.

: '10/Dec/01

MX-B382/B402  ADJUSTMENTS  4 – 29

(Method 2)
Use SIM67-25 to print the adjustment check sheet.

The print density must be changed gradually from the lighter
level to the darker level. The density changing direction must
not be reversed.
(Method 3)
Use SIM64-5 to print the print test pattern, and check the den-
sity and gradation.
Set each set value to the default and press [EXECUTE] key.
The print test pattern is printed out.
If a satisfactory result is not obtained with the above proce-
dure, perform the manual density and gradation adjustment
(ADJ 13B).

 

This adjustment is needed in the following situations:
* When the copy density and gradation adjustment is required.

Basically same as when the copy density and gradation adjust-
ment is required.

* After the copy density and gradation adjustment.
a. General
The printer density and gradation adjustment (manual adjustment)
is executed when the above automatic adjustment cannot obtain
the specified range, when a fine adjustment is required, or when a
request for customization is made by the user.
If the adjustment state is improper, it is advisable to execute the
automatic adjustment in advance then execute this adjustment for
efficiency.
b. Note for the printer density and gradation adjustment 

1)

After execution of the copy density and gradation adjustment.

Q (Max)

A

B

C D

E

F

G H

I

J

K

L

M N O P

High density

Low density

Patch A or B slightly printed

The max density patch is not blurred

The patch density is identical between patches or not reversed.

The patch density is changed gradually.

YES

YES

NO

NO

Manual printer density and gradation adjustment procedure flowchart
(SIM67-25)

Start

Execute ADJ13B (Printer density and gradation adjustment
(Manual adjustment)). (*1)

Enter the SIM67-25 mode, and select A4R
(11 " x 8.5"R) paper.

Press [EXECUTE] key.
(The adjustment pattern is printed.)

Check the density and gradation of the
adjustment check pattern.

Select a target adjustment density level with the
scroll key.

Enter the adjustment value with 10-key.

Press [EXECUTE] key.
(The adjustment pattern is printed.)

Are the density
at the satisfactory
level?

Cancel the SIM67-25 mode.

Check the self print check pattern to check the printer
density adjustment result. (*2)

Use SIM64-5 to print the self print
check pattern, and check the printer
density.

Are the printer

density and gradation

at the satisfactory

level?

End

Check the density and gradation of the
adjustment check pattern.

*1:
If satisfactory density is not obtained with the
adjustment, check the print engine for any
problems.