Check the following points to resolve the issue:
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Make sure that the media type setting in the printer driver matches the type of paper you are using.
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Check the machine's environment. Conditions such as high humidity and high temperatures can cause hollow print.
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If the issue is not solved after printing a few pages, foreign material, such as glue from a label, may be stuck on the drum surface. Clean the drum unit.
> Click here to see how to clean the drum unit.
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Install a new drum unit.
> Click here to see how to replace the drum unit.