Van Dyk Research Corporation

Van Dyke Research Corporation

Maxwell Aaron Pollack

A process for manufacturing a xerographic toner cartridge containing a heat-fusible toner powder situated in a container having an open end surrounded by a peripheral lip. An elongated tongue of a material having non-directional shear strength characteristics is placed on top of the opening, with a thermoplastic adhesive layer being disposed between the container lip and the tongue. The adhesive is activatable by heat and pressure, and once activated adheres more strongly to the peripheral container lip than to the tongue. The adhesive is bonded to the tongue and the peripheral lip by a heated platen having a shape conforming to that of the lip. The heat and pressure applied is sufficient to form the desired adhesive bonds, but the temperature and time employed are insufficient to cause deterioration of the toner powder in the container. The tongue is more than twice as long as the peripheral lip, and the free end of the tongue is folded back against the bonded portion thereof to act as a tab, the free end of said tab being detachably secured to an adjacent wall of the container.

Process for manufacturing a xerographic toner cartridge

A toner cartridge for a xerographic copier, the cartridge having a flexible closure tongue which may be peeled from the cartridge when the same is in inverted position within the copier. The tongue is constructed of a material which has non-directional shear strength characteristics substantially unaffected by folding, and a tear strength substantially greater than the peel strength of the bond between the tongue and the cartridge, so that the tongue does not tear when it is peeled from the cartridge. The surface friction of the tongue material is sufficiently low so that the tongue may be peeled from the cartridge after the cartridge has been positioned so that the tongue is pressed against the periphery of the toner receptacle within the copier.

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Morris Plains, NJ, United States of America

Maxwell Aaron Pollack