Powder storage container, developing device using powder storage container, image forming unit, and image forming apparatus

A powder storage container comprising:

• a powder storage unit that stores powder;
• a conveying member that is rotatably disposed in the powder storage unit and conveys the powder stored in the powder storage unit to an outlet;
• and
• an elastic member that includes:
• an upper end portion fixed to the inside of the powder storage unit;
• and
• a lower end portion which is a swingable free end and is disposed above the conveying member;
• and
• wherein a part of the lower end portion along the conveying direction of the conveying member is configured to contact with the conveying member to be elastically deformed,
• wherein the conveying member includes
• a flat plate portion as a first operating portion that is positioned on the upstream side in the conveying direction of the conveying member, loosens powder positioned above the conveying member, and is disposed so as to extend toward the outside in a radial direction of the conveying member,
• a spiral conveying blade portion that is positioned at a middle portion of the conveying member in the conveying direction and conveys powder, and
• a discharge portion as a second operating portion that is positioned on the downstream side in the conveying direction of the conveying member, discharges powder to the outlet, and is formed in an arc shape along an outer peripheral surface of the conveying member.