Printed at an Angle

The paper is curled.

Solutions

If the paper is curled or the edges of the paper are folded, it may touch the print head and be fed at an angle.

Place the paper on a flat surface to check if it is curled. If it is, flatten it.

The paper is loaded incorrectly.

Solutions

Load paper in the correct direction, and slide the edge guide against the edge of the paper.