Medium conveyance apparatus and image reading apparatus

A medium conveyance apparatus comprising:

• a feeding section configured to feed a medium downstream in a conveyance direction of the medium, the feeding section including a first feeding roller and a second feeding roller disposed at an interval in a width direction crossing the conveyance direction, and the second feeding roller rotating together with the first feeding roller;
• a separation section that includes a first torque limiter, that is configured to separate the medium fed in a double-feeding state in cooperation with the feeding section,
• that includes a first separation roller disposed so as to face the first feeding roller, and a second separation roller disposed so as to face the second feeding roller, in which the first separation roller and the second separation roller co-rotate when torque larger in value than a first torque value derived from a limit torque value of the first torque limiter is applied, and
• in which the first separation roller and the second separation roller are configured to co-rotate and rotate independently of each other;
• a detection section configured to detect skew of the medium fed from the feeding section;
• and
• a controller configured to rotate the first feeding roller and the second feeding roller while adjusting rotation speeds of the first feeding roller and the second feeding roller based on a state of the skew of the medium detected by the detection section, wherein
• the separation section includes a second torque limiter configured to couple the first separation roller and the second separation roller to each other in the width direction,
• a limit torque value of the second torque limiter is a second torque value smaller than the first torque value,
• the separation rollers rotate independently of each other when torque larger in value than a total torque value of the first torque value and the second torque value is applied to one of the first and second separation rollers, and
• the second torque value is larger than a torque difference between torque applied to the first separation roller and torque applied to the second separation roller generated when there is no difference in rotation speed between the first feeding roller and the second feeding roller, and is smaller than a torque difference between torque applied to the first separation roller and torque applied to the second separation roller generated when there is a difference in rotation speed between the first feeding roller and the second feeding roller.