Patent ID: 7500742

Claim:
A print head comprising: an orifice plate comprising at least two orifices; wherein at least one orifice prints a first reactive ink; wherein at least one other orifice prints a fixer or a second reactive ink; wherein physical proximity of the at least one orifice and the at least one other orifice on the printhead is not limited and mixing of reactants from the at least one orifice and the at least one other orifice is not otherwise prevented or minimized by the printhead; wherein the first reactive ink and the fixer or the second reactive ink react to form a solid precipitate; wherein the solid precipitate is redispersible or redissolvable in at least one of the first reactive ink, or the fixer or the second reactive ink; and wherein, when the solid precipitate forms on the printhead, the solid precipitate is able to redisperse or redissolve, thus avoiding clogging of the printhead.