Impact reduction device and image forming apparatus

An impact reduction device comprising:

• an open-close device including a first member configured to independently rotate around a shaft from an initial state to a predetermined first angle with respect to a housing and a second member capable of rotating together with the first member around the shaft from the initial state to a second angle greater than the first angle with respect to the housing;
• and
• a pressing mechanism disposed in the open-close device to press the first member in a direction in which the first member returns to the initial state when the first member is in an open state,
• the pressing mechanism pressing the first member in the direction in which the first member returns to the initial state using a predetermined first force until the first angle is reached,
• the pressing mechanism pressing the first member in a direction in which the first member together with the second member returns to the initial state using a second force greater than the first force between the first angle and the second angle.