Sheet feeding device, image forming apparatus, and image forming system

A sheet feeding device comprising:

• a bottom plate on which a sheet is placed;
• a pair of sheet-position adjusting members that are provided on both ends of the bottom plate with respect to a sheet width direction that intersects with a sheet conveying direction and that are opposed to each other so as to adjust a position of the sheet in the sheet width direction;
• and
• an air blowing unit that blows air to the sheet that is placed on the bottom plate so as to float the sheet, wherein
• each of the sheet-position adjusting members includes
• a floating restricting member that is provided such that the floating restricting member protrudes toward a middle of the sheet-position adjusting members and that pushes down the sheet that is placed on the bottom plate so as to restrict a floating position of the sheet;
• and
• a holding mechanism that movably holds the floating restricting member relative to the sheet-position adjusting member,
• the floating restricting member includes
• a sheet contact section that is brought into contact with the sheet when the sheet is pushed from above;
• and
• a sheet-floating restricting section that is provided adjacent to the sheet contact section such that the sheet-floating restricting section and the sheet contact section make a predetermined angle at an edge section and that is brought into contact with the sheet that is floated while the air is blown thereto, thereby restricting a floating position of the sheet, and
• the holding mechanism movably holds the floating restricting member
• in an initial state where the edge section protrudes toward a middle of the sheet-position adjusting members so that the sheet-floating restricting section restricts the floating position of the sheet and the sheet contact section is provided in such an attitude that the sheet contact section moves downward while moving inward, and
• in a sheet-placing time retracted state where, when the sheet to be supplied is pushed against the sheet contact section from above in the initial state, the floating restricting member is moved along a horizontal plane that intersects with the sheet conveying direction while the edge section is rotated downward so that the floating restricting member is moved outside the sheet-position adjusting member.