Hello, the issue might be caused by dried ink or a clogged print head. Clogged print heads can easily occur when the inkjet printer is left without power for an extended period. It is recommended to keep the printer powered on at all times, as the machine can perform regular automatic maintenance, which will reduce the likelihood of clogs. Our printers have a regular automatic cleaning function, which requires the printer to be powered on to work; power outages may affect the condition of the print head, resulting in poor print quality. You can try dripping a little clean water on the surface of the nozzle and gently wiping it with a paper towel to resolve the issue.