Sheet feeding device and image forming apparatus

A sheet feeding device comprising:

• a loading unit that lifts and lowers a loaded sheet;
• a sheet-end positioning unit that adjusts a position of an end of the sheet;
• a conveying unit that conveys the sheet to an image forming apparatus main body;
• a plurality of slide rails that are attached to the sheet feeding device;
• a pullout unit that is movable toward the image forming apparatus main body on the slide rails;
• an extended tray that is installed on a slide bottom plate so as to extend therefrom;
• the slide bottom plate that is movable up and down by the loading unit and that is slidable on the pullout unit in a horizontal direction;
• a front-edge sheet positioning unit that raises up when the slide bottom plate is pulled out in a horizontal direction and that falls down when the slide bottom plate is pushed in a horizontal direction;
• and
• a connection unit that connects to a handle for pulling out the pullout unit in a horizontal direction when the slide bottom plate is located at a lowest point.