Medium ejection apparatus to change angle of extension tray

A medium ejection apparatus comprising:

• an ejection roller to eject a medium;
• an ejection tray having a first stacking surface, to stack a medium ejected by the ejection roller;
• and
• an extension tray rotatably attached to an end part of the ejection tray at a downstream side in a medium ejection direction, and having a second stacking surface, to stack a medium ejected by the ejection roller, wherein
• an end part of the ejection tray at the downstream side is provided with a first abutting part and second abutting part, wherein
• the end part of the extension tray at the ejection tray side is provided with a first abutted part and second abutted part, wherein
• the second stacking surface is located forming a first angle with respect to the first stacking surface by the first abutted part abutting against the first abutting part, and wherein
• the second stacking surface is located forming a second angle, different from the first angle, with respect to the first stacking surface by the second abutted part abutting against the first abutting part.