Abstract: A method for making ink jet print head base elements which includes the steps of making a sacrificial mold of the ink jet print head, binder coagulation casting a ferroelectric, piezoelectric ceramic slurry into the sacrificial mold to form a green ceramic base element, and sintering the green ceramic base element while in the sacrificial mold to thereby burn off the sacrificial mold and yield a sintered, net shape, molded ink jet print head. complex shapes to thereby reduce the numbers of complex manufacturing steps. A three dimensional jet printing process can be used to form the sacrificial molds. Once the sacrificial mold has been made, a ferroelectric material (and preferably a piezoelectric material) is prepared using a binder coagulation process. The slurry of the ferroelectric material, preferably lead zirconium titinate (PbZrTiO.sub.3 hereinafter referred to as PZT) is poured into the mold. Once the ferroelectric material is poured into the mold, a chemical initiator is added.

Abstract: An injection mold cavity and a method for fabricating an injection mold cavity. The mold cavity includes a tear-drop shaped channel and an ejection valve simultaneously formed with the fabrication of the mold cavity using a layer-additive process. The ejection valve is movable within the mold cavity and actuatable by a flow of gas through the channel to eject a molded part from the injection mold cavity. The mold cavity, including the ejection valve, is made of the same material.

Abstract: An apparatus and method for mixing photographic emulsions is disclosed. The mixer is a truncated hollow cone having a first circumference and a second end having a second circumference. The second circumference is larger than the first circumference. The cone is attached to an end of a central shaft attached to the first end. The rotation of the shaft produces micromixing of the photographic emulsion while minimizing air entrainment.