Epson 440 User Manual download pdf (Page 148)

EPSON Stylus Color 440/640/740 Revision A

Chapter 5 Adjustment 148

5.2.2.8 Head Angular Adjustment

During production, slight variations are created in printheads and

carriage (which are used as a printhead base.) If these differences are

not adjusted, they can adversely influence the printhead angle, and

color overlapping is not performed correctly and color/white line

problem occurs as a result. Therefore, in order to adjust the printhead

angle correctly, the exclusive lever for adjusting the printhead angle is

installed on the side of the carriage unit. By moving this lever, you are

able to adjust the printhead angle without removing the ink cartridge.

This adjustment is required in the following cases.

When a printhead is replaced.

When the carriage unit is replaced.

When the angle adjustment lever is moved.

Print the check pattern in the adjustment program to determine the

angle degree needed for the printhead. Then move the adjustment lever

in the carriage unit to set the printhead angle referring to the printed

check pattern.

Remove the upper case from the main unit. (Refer to Chapter 4.)

NOTE

If you perform this adjustment with the upper case installed, select

“

Move the carriage to the head angular adjustment position”

Current Head Angular Confirmation Menu (1) screen (Figure 5-26)

before loosening the screw.

Apply the main menu (Figure 5-21). (See Section 5.2.2.2.)

By using the Up/Down arrow key, select

Adjustment

in the main

menu. By using the Up/Down arrow key, select

Head Angular

Adjustment

. The following screen appears.

Figure 5-26. Current Head Angular Confirmation Menu (1)

Select Head Angular Adjustment Pattern and press Enter key. The

screen below appears and the printer prints the head angular

adjustment pattern (Figure 5-28).

Figure 5-27. Current Head Angular Confirmation Menu (2)

CAUTION

Before or after performing this operation, refer to Table

5-2 and perform appropriate adjustments or

operations.

M S-D O S Prom pt-SC 640

Auto

H ead Angular Adjustm ent

Esc: Previous

H ead Angular Adjustm ent pattern

E n te r: O K

N o te :

The inform ation provided in this service tool is com m on for the Stylus Color 440, 640,

and 740 except for som e printer specific inform ation such as ink counter lim its.

M ove the carriage to the head angular adjustm ent position.

R eturn the carriage to the hom e position.

M S-D O S P rom pt-S C 640

Auto

The H ead Angular Adjustm ent pattern is now printing.

N o te :

The inform ation provided in this service tool is com m on for the Stylus C olor 440, 640,

and 740 except for som e printer specific inform ation such as ink counter lim its.

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Epson 440 User Manual Page 148

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