Image reading apparatus

An image reading apparatus, comprising:

• a reading portion that reads an image of a document;
• a first unit;
• a second unit configured to be rotated in relation to the first unit and configured to be closed onto, and opened away from, the first unit by being rotated;
• a motor provided in the second unit;
• a power transmission mechanism that transmits motive power of the motor from the second unit to the first unit,
• a pair of first transporting rollers;
• and
• a pair of second transporting rollers, wherein
• a document transportation path for transportation of a document is formed when the second unit is closed onto the first unit, and the document transportation path is split open when the second unit is opened away from the first unit,
• the power transmission mechanism includes a first gear, which has a same axial center of rotation as that of the second unit, and a second gear, which is provided in the second unit and is in mesh with the first gear,
• the reading portion includes a first reading portion, which is provided in the first unit and reads the image of the document transported along the document transportation path, and a second reading portion, which is provided in the second unit and reads the image of the document transported along the document transportation path,
• the pair of first transporting rollers is located upstream of the first reading portion and the second reading portion on the document transportation path,
• the pair of second transporting rollers is located downstream of the first reading portion and the second reading portion on the document transportation path,
• the pair of first transporting rollers includes a first lower roller, with which a lower surface of the document that is being transported along the document transportation path comes into contact in the first unit, and a first upper roller, with which an upper surface of the document that is being transported along the document transportatoin path comes into contact in the second unit,
• the pair of second transporting rollers includes a second lower roller, with which the lower surface of the document comes into contact in the first unit, and a second upper roller, with which the upper surcface of the documnet comes into contact in the second unit, and
• the motor drives the first lower roller, the first upper roller, the second lower roller, and the second upper roller via the power transmission mechanism.

An image reading apparatus, comprising:

• a reading portion that reads an image of a document;
• a first unit;
• a second unit configured to be rotated in relation to the first unit and configured to be closed onto, and opened away from, the first unit by being rotated;
• a motor provided in the first unit;
• a power transmission mechanism that transmits motive power of the motor from the first unit to the second unit;
• a pair of first transporting rollers;
• and
• a pair of second transporting rollers, wherein
• a document transportation path for transportation of the document is formed when the second unit is closed onto the first unit, and the document transportation path is split open when the second unit is opened away from the first unit,
• the power transmission mechanism includes a first gear and a second gear, wherein the second gear is provided in the second unit and is in mesh with the first gear,
• the reading portion includes a first reading portion, which is provided in the first unit and reads the image of the document transported along the document transportation path, and a second reading portion, which is provided in the second unit and reads the image of the document transported along the document transportation path,
• the pair of first transporting rollers is located upstream of the first reading portion and the second reading portion on the document transportation path,
• the pair of second transporting rollers is located downstream of the first reading portion and the second reading portion on the document transportation path,
• the pair of first transporting rollers includes a first lower roller, with which a lower surface of the document that is being transported along the document transportation path comes into contact in the first unit, and a first upper roller, with which an upper surface of the document that is being transported along the document transportation path comes into contact in the second unit,
• the pair of second transporting rollers includes a second lower roller, with which the lower surface of the document comes into contact in the first unit, and a second upper roller, with which the upper surface of the document comes into contact in the second unit, and the motor drives the first lower roller, the first upper roller, the second lower roller, and the second upper roller via the power transmission mechanism.

An image reading apparatus, comprising:

• a reading portion that reads an image of a document;
• a first unit;
• a second unit configured to be rotated in relation to the first unit and configured to be closed onto, and opened away from, the first unit by being rotated;
• a motor provided in the second unit;
• a power transmission mechanism that transmits motive power of the motor from the second unit to the first unit,
• a pair of first transporting rollers;
• and
• a pair of second transporting rollers, wherein
• a document transportation path for transportation of a document is formed when the second unit is closed onto the first unit, and the document transportation path is split open when the second unit is opened away from the first unit,
• the power transmission mechanism includes a first gear and a second gear, wherein the second gear is provided in the second unit and is in mesh with the first gear,
• the reading portion includes a first reading portion, which is provided in the first unit and reads the image of the document transported along the document transportation path, and a second reading portion, which is provided in the second unit and reads the image of the document transported along the document transportation path,
• the pair of first transporting rollers is located upstream of the first reading portion and the second reading portion on the document transportation path,
• the pair of second transporting rollers is located downstream of the first reading portion and the second reading portion on the document transportation path,
• the pair of first transporting rollers includes a first lower roller, with which a lower surface of the document that is being transported along the document transportation path comes into contact in the first unit, and a first upper roller, with which an upper surface of the document that is being transported along the document transportation path comes into contact in the second unit,
• the pair of second transporting rollers includes a second lower roller, with which the lower surface of the document comes into contact in the first unit, and a second upper roller, with which the upper surface of the document comes into contact in the second unit, and
• the motor drives the first lower roller, the first upper roller, the second lower roller, and the second upper roller via the power transmission mechanism.