This may occur when the image record on the intermediate transfer belt has largely changed. For example, this may occur when a solid-fill image is printed after horizontal lines are printed continuously. A potential difference occurs between an image portion and non-image portion on the intermediate transfer belt as a result of continuous printing of horizontal lines, causing the horizontal lines to become obvious on the next solid-fill image.
This may occur if:
Printing is done at high temperature or humidity
Printing on thin coated paper (Paper Weight 3 or lower) or on transparent film
Printing an extremely different type of image
To adjust the following settings, pre-register the type of paper in use as a custom paper. For details about registering custom papers, see "Registering a Custom Paper", Preparation.