Part of the paper is too dry because the paper is exposed to the air flow caused by the fan in the paper tray.
This may occur when:
Solid fills in two are printed
Printing is performed at low temperature and humidity
Thick paper is used
Paper is exposed to the air flow caused by the fan in the paper tray for a long time when printing for image quality adjustment is performed
To adjust the following settings, pre-register the type of paper in use as a custom paper. For details about registering custom papers, see "Specifying a Custom Paper", Preparation.