초록 ▼

A developing apparatus usable with an image forming apparatus includes a frame having developing device; a toner accommodation container having an opening for supplying toner to the developing device and for accommodating the toner; and an elastic sheet inserted between the frame and the toner accom

A developing apparatus usable with an image forming apparatus includes a frame having developing device; a toner accommodation container having an opening for supplying toner to the developing device and for accommodating the toner; and an elastic sheet inserted between the frame and the toner accommodation container to seal the opening, wherein the elastic sheet has a thickness larger than the gap when it is not compressed, and has a flexible sheet projected out of the gap. A method of sealing an opening of the toner accommodation container, includes detachably mounting an elastic sheet to a longitudinal end of an insertion member; then inserting the insertion member between the toner accommodation container and the frame to a position for sealing the opening by the elastic sheet; and then removing the elastic sheet from the insertion member. A sealing member for sealing an opening of a toner accommodating container includes a flexible film; and an elastic sheet on the flexible film.

대표청구항 ▼

[ What is claimed is:] [1.] A sealing member for sealing an opening of a toner-accommodating container having a gap which is formed by the toner-accommodating container and a developing frame provided with a developing sleeve, the toner-accommodating container being capable of containing toner for u

[ What is claimed is:] [1.] A sealing member for sealing an opening of a toner-accommodating container having a gap which is formed by the toner-accommodating container and a developing frame provided with a developing sleeve, the toner-accommodating container being capable of containing toner for use in developing a latent image formed on an electrophotographic photosensitive member, said sealing member comprising:a flexible film having a thickness of approximately 10-200 .mu.m; andan elastic sheet on said flexible film,wherein, to seal the opening, said flexible film and said elastic sheet are inserted into the gap by an insertion member, wherein after the insertion member is removed, the opening remains sealed by saidsealing member remaining in the gap by the elasticity of the elastic sheet, andwherein a surface of said elastic sheet is covered with a sliding sheet when said elastic sheet is inserted into the gap, and, after said elastic sheet is inserted into the gap, the sliding sheet is pulled out of the gap.