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IP.com Disclosure Number: IPCOM000027059D
Original Publication Date: 1995-Feb-28
Included in the Prior Art Database: 2004-Apr-07

Publishing Venue

Xerox Disclosure Journal


Many electrophotographic copiers and printers use a disposable dry ink cartridge utilizing a pull tab seal opening. Upon installation, the seal on the ink cartridge must be removed. Proposed is a simple, cost effective, disposable cranking key to allow an installer to remove the seal without spillage. The key is molded and attached with a fill gate to the cartridge, much like plastic parts are held together for cereal box toys. A hole and a snap-fit tab would be provided on the cartridge to accept the key. An installer would simply insert and snap key onto the cartridge, thread a portion of the seal membrane or other feature through a slot on the key, and wind the seal membrane onto the key shaft. As the key turns, a uniform mechanical advantage separates the membrane from the cartridge without any sudden jerking action. This lack of sudden cartridge movement significantly limits and reduces dry ink spillage.