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MX-C401  MX-C310/MX-C311/MX-C312/MX-C380/MX-C381/MX-C400/MX-C401 (MAIN UNIT)  1 – 9

Check the sub scan rough adjustment color image shift check
section on the R side and the F side of each color, use the
black scale of "0" as the center reference, and check the bal-
ance in shifts of the color image line positions in the positive
and the negative directions. The balance in the R side must be
the same as that in the F side.

Check the square frames on the R side and the F side of each
color. (Normally five sections of high density can be seen.)
Check the sub scanning direction position of the center area of
high density (one of the above five sections). These must be
on the same position on the R side and the F side.

In this case, use the sub scan direction color image shift check
scale (fine adjustment) as the reference.

Visually check the color density and make the darkest section
as the center, and use it as the read value of the shift amount.

Check that the difference in the center position of the dark den-
sity section is within 

 2 step.

The positional relations of the front and the rear frame of the
print color patterns of a same color are compared. There is no
need that all the colors are in the same state. Compare only
the positional relations of color patterns of a same color.

If the above condition is not met, do the following:

12) Turn the image skew adjustment screw of the target color to

adjust.

Relationship between the adjustment screw rotating angle and
the change in the adjustment image position:

Adjustment screw rotating angle (degree) = Image shift
amount (Adjustment scale) x 10

Repeat procedures 11) - 12) until a satisfactory result is obtained.

1)

Enter the SIM50-22 mode.

2)

Select ALL for the adjustment items.

ALL: Image registration (Main scanning direction, sub scan-
ning direction) / Automatic adjustment of the OPC drum phase

3)

Press [EXECUTE] key.

The adjustment is automatically performed and the adjustment
result data are displayed.

4)

Check the image registration.

NOTE: For details of the image registration check procedures,

refer to ADJ 7B and ADJ 7C.

Make a copy in the document table mode and in the RSPF mode,
and check to confirm that the void area is within the specified range
shown below.

NOTE: For details of the image loss and image void check proce-

dures, refer to ADJ 11 and ADJ 12.

1)

Enter the SIM50-28 mode.

(4.3 Inch LCD model)

(8.5/7.0 Inch LCD model)

2)

Select [SETUP/PRINT ADJ].

3)

Select [ALL].

(4.3 Inch LCD model)

Y

M

C

b

a

Lead edge void area

 3.0 

 1.0mm

Rear edge void area

 2.0 - 5.0mm

Front/Rear void area

 3.0 

 2.0mm

Lead edge image loss adjustment

3.0 

 1.0mm

Side image loss adjustment

2.0 

 1.0mm

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MX-C401  MX-C310/MX-C311/MX-C312/MX-C380/MX-C381/MX-C400/MX-C401 (MAIN UNIT)  1 – 10

(8.5/7.0 Inch LCD model)

NOTE:

When [ALL] is selected, the adjustments of the following two
items are performed at a same time.

* [LEAD]: Print image lead edge image position adjustment

* [OFFSET]: Print image off-center adjustment

4)

Select the paper feed trays to be adjusted. (Select all the
trays.)

Set A4 (11" x 8.5") paper in each paper feed tray in advance.

(4.3 Inch LCD model)

(8.5/7.0 Inch LCD model)

5)

Press [EXECUTE] key.

The adjustment pattern is printed out. (Paper is fed from the
selected paper feed tray, and the adjustment pattern of each
paper feed tray is printed out.)

6)

Set the adjustment pattern in the center reference on the docu-
ment table.

NOTE: Fit the adjustment pattern correctly with the document

guide.

7)

Press [EXECUTE] key.

(4.3 Inch LCD model)

(8.5/7.0 Inch LCD model)

The following item is automatically adjustment.

* Print image lead edge image position adjustment

* Print image off-center adjustment

Perform the procedures of 6) - 7) for the printed adjustment
pattern of each paper feed tray.

8)

Press [OK] key. (For the 4.3 Inch LCD model, press the OSA
shortcut key.)

The adjustment result becomes valid.

(4.3 Inch LCD model)

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MX-C401  MX-C310/MX-C311/MX-C312/MX-C380/MX-C381/MX-C400/MX-C401 (MAIN UNIT)  1 – 11

(8.5/7.0 Inch LCD model)

NOTE: When an error occurs in the automatic adjustment of

SIM50-28, place white paper on the adjustment pattern and
perform the adjustment.

1)

Enter the SIM50-28 mode.

(4.3 Inch LCD model)

(8.5/7.0 Inch LCD model)

2)

Select [OC ADJ].

3)

Select a paper feed tray. Set A4 (11" x 8.5") paper.

(4.3 Inch LCD model)

(8.5/7.0 Inch LCD model)

4)

Press [EXECUTE] key.

The adjustment pattern is printed out.

5)

Set the adjustment pattern in the center reference on the docu-
ment table.

NOTE: Fit the adjustment pattern correctly with the document

guide.

6)

Press [EXECUTE] key.

(4.3 Inch LCD model)

(8.5/7.0 Inch LCD model)

The following item is automatically adjustment.

* Copy lead edge image reference position adjustment, image

off-center, sub scanning direction image magnification ratio
automatic adjustment

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MX-C401  MX-C310/MX-C311/MX-C312/MX-C380/MX-C381/MX-C400/MX-C401 (MAIN UNIT)  1 – 12

7)

Press [OK] key. (For the 4.3 Inch LCD model, press the OSA
shortcut key.)

The adjustment result becomes valid.

(4.3 Inch LCD model)

(8.5/7.0 Inch LCD model)

NOTE: When an error occurs in the automatic adjustment of

SIM50-28, place white paper on the adjustment pattern and
perform the adjustment.

1)

Enter the SIM50-28 mode.

(4.3 Inch LCD model)

(8.5/7.0 Inch LCD model)

2)

Press the [SPF ADJ] button.

3)

Select [ALL].

(4.3 Inch LCD model)

(8.5/7.0 Inch LCD model)

4)

Select one of the paper feed trays that can be used to print
RSPF adjustment patterns. (Multiple selection is not allowed.)

(4.3 Inch LCD model)

(8.5/7.0 Inch LCD model)

5)

Press the [EXECUTE] button.

The machine starts self-print of RSPF adjustment patterns.

When self-print finishes, the next screen appears where you
can start RSPF adjustments.

6)

Set the adjustment pattern face up in the RSPF.

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