Epson R320 - Stylus Photo Color Inkjet Printer, Service Manual

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EPSON Stylus Photo R320 Revision B
ADJUSTMENT Adjustment by using adjustment program 89
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.
Figure 3-1. Head Angular Printing Pattern
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.
Figure 3-2. Bi-D Adjustment Pattern
OK pattern NG pattern
[Judging Standard]
- The printed line should be straight line.
[Reference: Standard value in manufactory]
- Standard: ± 50µm
[Judging Standard]
- 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.
OK pattern NG pattern