Head Angular Adjustment; Bi-D Adjustment - Epson Stylus Photo R320 Service Manual

EPSON Stylus Photo R320

3.2.4 Head Angular Adjustment

[Adjustment Procedure]
1. Select Head Angular Adjustment in the Adjustment Program.
2. Click the [Print] button to print Head Angular Adjustment Pattern.
3. Select the value of pattern which is most straight among the patterns.
4. Click the [input] button and write the adjustment value.
(Note: The range of the adjustment value is -3 to 3.)
[Treatment procedure for NG product]
1. Replace the Print Head with new one again.
2. Print the check pattern, and check the adjustment result.
3. If the result is NG level, confirm the installation condition of removed parts during
disassembly.
4. Perform step2) again.
[Judging Standard]
OK pattern NG pattern
- The printed line should be straight line.
[Reference: Standard value in manufactory]
- Standard: ± 50µm
Figure 3-1. Head Angular Printing Pattern
ADJUSTMENT

3.2.5 Bi-d Adjustment

[Adjustment Procedure]
1. Select Bi-D Adjustment in the Adjustment Program.
2. Click the [Print] button to print Bi-D Adjustment Pattern.
3. After selecting the pattern that has the smallest misalignment in each variable dot,
click the [Go to input page] button in the Adjustment Program.
4. Click the [Input] button to write the adjustment value of checked items.
5. Click the [Go to print page] button.
[Treatment procedure for NG product]
1. Replace the Print Head with new one again.
2. Print the check pattern, and check the adjustment result.
3. If the result is NG level, confirm the installation condition of removed parts during
disassembly.
4. Perform step2) again.
OK pattern
Adjustment by using adjustment program
[Judging Standard]
NG pattern
- No gap/overlap between short block pattern
and long one.
[Reference: Standard value in manufactory]
VSD1: 60µm,
VSD2: 60µm,
VSD3: 40µm,
VSD4: 40µm,
ECO: 85µm.
Figure 3-2. Bi-D Adjustment Pattern
Revision B
89