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AssigneeGeneral Plastics, Inc.
InventorsRen-Hao Liu, Shu Hui Wang, Xiao Hui Wang, Ting Hsuan Ko, Jui-Chi Wang, Robin Hsu, Ya Li Huang, Kuan Tung Li, Hui Wen Hsieh
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A foolproof device used in a process cartridge of an image forming apparatus formed of a developing device and a toner container is constructed to include female engagement portions of two different sizes formed in the toner container, and male engagement portions of two different sizes formed in the developing device and adapted for guiding correct installation of the toner container in the developing device and securing the toner container to the developing device positively.
A foolproof device used in an image forming apparatus comprising a developing device adapted for receiving toner and forming images with received toner and a toner container adapted for supplying toner to said developing device for forming images, the foolproof device comprising a plurality of first engagement portions formed in one of said developing device and said toner container, and a plurality of second engagement portions formed in the other of said developing device and said toner container and adapted for engaging said first engagement portions respectively, said first engagement portions having different longitudinal lengths, said second engagement portions having different sizes respectively fitting lengths of said first engagement portions.
Dependencies are inferred from the claim text.