Conveying device and image forming device

A conveying device, comprising:

• a main body including a first conveying member that conveys a single media;
• a holding unit that holds a plurality of media accumulated in a vertical direction relative to an installation surface on which the conveying device is installed and is attached and detached to and from the main body through movement in a direction parallel to the installation surface;
• a feed unit that feeds the single medium to the main body, and includes an attaching part and a second conveying member and a second conveying member, the attaching part enabling the feed unit to attach to the holding unit, the second conveying member facing the first conveying member to pinch the media at a position facing the first conveying member so as to conveys the single media with the first conveying member;
• a third conveying member that conveys a single medium which is on the uppermost surface among the plurality of media held in the holding unit and is separated from the plurality of media;
• and
• a positioning mechanism that positions the main body and the feed unit so that the second conveying member is located at a predetermined position relative to the first conveying member when the holding unit is loaded on the main body, wherein
• the attaching part is configured to allow relative movement of the feed unit and the holding unit, and
• the feed unit is positioned relative to the main body.