Image reading apparatus and image forming apparatus provided with the same

An image reading apparatus comprising:

• an original placing portion on which an original is placed;
• a feed portion for feeding the original placed on said original placing portion to convey the original from one end side of an original plate onto said original plate;
• a conveying rotary member for conveying the original on said original plate;
• a reversing and conveying portion for reversing a front side and a back side of the original conveyed to the other end side of said original plate by said conveying rotary member and conveying the reversed original from the other end side onto said original plate;
• an image reading unit for reading an image of the original stopped on said original plate while being moved;
• and
• a control portion for controlling a driving of said conveying rotary member,
• wherein said control portion controls said conveying rotary member so as to stop the original conveyed from the one end side by said feed portion at a first image reading position on said original plate, and stop the original conveyed from the other end side by said reversing and conveying portion at a second image reading position on said original plate differing from said first image reading position, and
• a first standby position at which said image reading unit stands by to read the original stopped at said first image reading position, and a second standby position at which said image reading unit stands by to read the original stopped at said second image reading position are different from each other.