Electrophotography – Internal machine environment – Particle or contaminant control
Patent
1999-07-06
2000-03-21
Smith, Matthew S
Electrophotography
Internal machine environment
Particle or contaminant control
2225411, 428113, 428149, 428150, 428151, 428354, 428381, 428442, G03G 1508
Patent
active
06041202&
ABSTRACT:
A frangible tear strip for toner cartridges used in electro-photographic copying devices, in which bursting strength is increased without making it more difficult for the user to longitudinally tear the strip to create an opening for passage of toner prior to use. This is accomplished by providing multiple areas of transverse reinforcement of the strip either by increased local area fusing of the material, or the lamination of transversely extending reinforcements at spaced intervals. In a preferred embodiment, the reenforcing material extends the entire axial length of the seal. In a further embodiment, the reinforcing material includes a layer of foam material having a rectangular opening overlapping a corresponding opening in a toner cartridge.
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Smith Matthew S
Temko Charles E.
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