Ball pen ink cartridges containing inks which do not form crystalline masses within copper or copper alloys – 4,077,727

Abstract New ball point pen ink compositions are utilized to enhance the performance and very substantially extend the service life of ball pen ink cartridges by preventing the formation of an ink flow-blocking mass at the entrance to the brass… Read moreBall pen ink cartridges containing inks which do not form crystalline masses within copper or copper alloys – 4,077,727

Ball pen inks which do not form clogging crystalline masses within copper or copper alloy ink cartridges – 4,077,807

Abstract New ball point pen ink compositions are utilized to enhance the performance and very substantially extend the service life of ball pen ink cartridges by preventing the formation of an ink flow-blocking mass at the entrance to the brass… Read moreBall pen inks which do not form clogging crystalline masses within copper or copper alloy ink cartridges – 4,077,807

Ink cartridges having ink compositions with pigmented particles and methods for their manufacture and use – 5,837,041

Abstract Ink cartridges containing ink compositions containing nanometer scale pigment particles are produced by preparing a pigment solution including a solubilized pigment-Lewis acid complex and an aprotic solvent system, separating the pigment from the pigment solution to form pigmented particles… Read moreInk cartridges having ink compositions with pigmented particles and methods for their manufacture and use – 5,837,041

Method and apparatus for protecting electronic contacts on printer ink cartridges during insertion to and removal from a printer – 6,257,702

Abstract Disclosed is a method and apparatus for protecting electronic contacts on printer ink cartridges during insertion to and removal from a printer. The method includes inserting a protective strip (10) into the cradle (18) of the printer such that… Read moreMethod and apparatus for protecting electronic contacts on printer ink cartridges during insertion to and removal from a printer – 6,257,702