Patent ID: 8855525
Filing Date: 2014-10-07
Classification: G03G

Abstract:
1. A developing device comprising: a developer carrying member for carrying a developer; a first chamber, for supplying the developer to said developer carrying member, wherein said developer carrying member is partly exposed to said first chamber; a first feeding member, rotatably provided in said first chamber, for feeding the developer; a second chamber connected with said first chamber so as to establish a circulation path through a first communication opening and a second communication opening; a second feeding member, rotatably provided in said second chamber, for feeding the developer in a direction opposite a feeding direction of the first feeding member; a sealing portion for openably sealing said first communication opening and said second communication opening so as to confine the developer in said second chamber; a moving mechanism for moving said sealing portion to unseal said first and second communication openings; and a third feeding member rotatably provided in said second chamber, for feeding the developer in a direction opposite the feeding direction of said second feeding member.