Toner cartridge sealing film retaining configuration

Electrophotography – Internal machine environment – Particle or contaminant control

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G03G 1508

Patent

active

057428778

ABSTRACT:
In a toner cartridge for supplying toner to the developing unit in a xerographic image forming apparatus, the casing containing toner has two toner discharge openings sealed prior to installation by a sealing film having a sealing portion peel-separably affixed to the casing around the toner discharge openings, as well as a peel-separating leader portion. The sealing film overlaps itself, having open opposite lateral edges. The toner cartridge is fitted with retaining elements affixed to the casing along opposite lateral edges of the toner discharge openings, for covering the open opposite lateral edges of the sealing film. An installation seat having a toner-disgorging opening corresponding to the toner discharge openings is fixed to the end of the toner cartridge casing. The installation seat includes pressing elements therein disposed over the retaining elements for maintaining external pressure on the retaining elements.

REFERENCES:
patent: 3999654 (1976-12-01), Pollack
patent: 4827307 (1989-05-01), Zoltner
patent: 4937628 (1990-06-01), Cipolla et al.
patent: 5142335 (1992-08-01), Sakata et al.
patent: 5261568 (1993-11-01), Corby et al.
Patent Abstracts of Japan vol. 94, No. 012, & JP-A-06 332312, Dec. 1994.
Patent Abstracts of Japan vol. 007, No. 087 (P-190), Apr. 9, 1983 & JP-A-58 014864, Jan. 1993.

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