Irregular pattern line segment is the fault of nozzle oblique spraying. The main reason is that the ink is sticky, which forms dirt on the nozzle and changes the direction of ink injection, so there will be fuzzy printing.
In this case, cleaning can also be carried out without disassembling the nozzle.
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——? Epson inkjet printer online maintenance department
When you're done with your design:
Enlarged black pattern: