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Funding is provided by Bank of America, Corporation for Public Broadcasting, The Arthur Vining Davis Foundations, Public Broadcasting Service, National Endowment for the Humanities, The Rockefeller Foundation, Wallace Genetic Foundation and members of The Better Angels Society, including the Dana A. Hamel Family Charitable Trust and Robert and Beverly Grappone.Field of the Invention
The present invention relates to a developer container, a developer storage unit, a process cartridge, and an image forming apparatus that uses these components.
Description of the Related Art
Japanese Patent Application Publication No. H5-197288 describes a developer storage unit including a developing chamber having a developing roller, and a developer container provided adjacent to the developing chamber in order to supply developer to the developing chamber. The developing chamber and the developer storage container communicate with each other via an opening, and the opening is sealed by a sealing member. The sealing member is attached to an end portion of an unsealing member that is supported rotatably inside the developer storage container, and when the unsealing member rotates, the sealing member is peeled away. When the