Toner sealing material

Details Toner sealing material Toner sealing material

1991-07-26

1993-12-28

Picard, Leo P.

Photocopying

Contact printing

Light boxes

118656, 355259, G03G 2100

Patent

active

052744256

ABSTRACT:
A toner sealing material for use in a toner cartridge of an electrophotographic image formation apparatus is disclosed. The toner sealing material comprises an elastic layer which is in contact with the cartridge via an adhesive layer and a tetrafluoroethylene resin porous layer having a thickness of at least 0.2 mm which is laminated on the elastic layer via an adhesive layer and is in contact with a developing roller fixed to the cartridge. With the sealing material, a toner can be prevented from leaking from a toner cartridge for an extended period of time.

REFERENCES:
patent: 4108112 (1978-08-01), Hudson
patent: 4398494 (1983-08-01), Alheid
patent: 4449810 (1984-05-01), Ikesue et al.
patent: 4640600 (1987-02-01), Hirabayashi et al.

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