Image reading apparatus and image forming apparatus

An image reading apparatus comprising:

• an apparatus main body including an image reading portion;
• a rotating portion configured to be rotatable around a shaft with respect to the apparatus main body, the rotating portion capable of being positioned at a first position, a second position where a rotation angle with respect to the apparatus main body is greater than that at the first position, and a third position where the rotation angle with respect to the apparatus main body is greater than that at the second position;
• a holding portion configured to maintain the rotating portion at the first position;
• a first biasing portion configured to apply a force to the rotating portion such that the rotating portion is stoppable at a predetermined position, in a state in which the rotating portion is positioned in a range from the second position to the third position;
• and
• a second biasing portion configured to apply a force to move the rotating portion from the first position to the second position when the maintaining of the rotating portion at the first position by the holding portion is released.

An image forming apparatus comprising:

• an image forming portion configured to form an image on a recording medium;
• an apparatus main body including an image reading portion;
• a rotating portion configured to be rotatable around a shaft with respect to the apparatus main body, the rotating portion capable of being positioned at a first position, a second position where a rotation angle with respect to the apparatus main body is greater than that at the first position, and a third position where the rotation angle with respect to the apparatus main body is greater than that at the second position;
• a holding portion configured to maintain the rotating portion at the first position;
• and
• a biasing portion configured to apply a force to move the rotating portion from the first position to the second position when the maintaining of the rotating portion at the first position by the holding portion is released.

An image forming apparatus comprising:

• an image forming portion configured to form an image on a recording medium;
• an apparatus main body including an image reading portion;
• a rotating portion configured to be rotatable around a shaft with respect to the apparatus main body, the rotating portion capable of being positioned at a first position, a second position where a rotation angle with respect to the apparatus main body is greater than that at the first position, and a third position where the rotation angle with respect to the apparatus main body is greater than that at the second position;
• a holding portion configured to maintain the rotating portion at the first position;
• a first biasing portion configured to apply a force to the rotating portion such that the rotating portion is stoppable at a predetermined position, in a state in which the rotating portion is placed in a range from the second position to the third position;
• and
• a second biasing portion configured to apply a force to move the rotating portion from the first position to the second position when the maintaining of the rotating portion at the first position by the holding portion is released.