Image reading apparatus

摘要

An image reading apparatus includes an image reader unit that has a plurality of light receiving elements for reading an image on an original, and moves relative to a frame for applying a pressing force to a read-target surface of the original; and a driven roller that is rotatable, comes into contact with the original, and moves relative to the frame and independent of the image reader unit in a direction in which the image reader unit applies the pressing force to the original, thereby applying a pressing force to the original independent of the image reader unit.

主权项

1. An image reading apparatus comprising:
an image reader that has a plurality of light receiving elements for reading an image on a to-be-read-medium, and moves relative to a frame for applying a first pressing force to a read-target surface of the to-be-read-medium, the read-target surface carrying an image to be read; and a pressing roller that is rotatable, comes into contact with the to-be-read-medium, and moves relative to the frame and independent of the image reader in the same direction in which the image reader applies the first pressing force to the to-be-read-medium, thereby applying a second pressing force to the to-be-read-medium independent of the image reader, wherein the frame includes a roller supporter that supports a bearing that supports a rotation axis of the pressing roller, the pressing roller applies the second pressing force to the to-be-read-medium when the roller supporter slidably supports the bearing while the bearing is applied with a biasing force in a pressing direction in which the pressing roller applies the second pressing force to the to-be-read-medium, and the image reading apparatus further comprises an elastic member that is disposed between the bearing and the roller supporter for applying a biasing force in the pressing direction to the bearing and the roller supporter.