Patent ID: 6886921

Claim:
An ink ejector for an ink jet printer having a substantially uniform surface temperature profile and a substantially non-uniform current density distribution, the ink ejector comprising a thin film resistor having a first segment and a second segment attached at an angle on a first end thereof to a first end portion disposed between the first and second segments, a third segment and a fourth segment attached at an angle on a first end thereof to a second end portion disposed between the third and fourth segments and on a second end thereof to the first and second segments, the resistor having a major axis having a first length, a minor axis having a second length less than the first length, wherein the major axis extends between the first end portion and the second end portion thereof, and wherein electrical conductors are attached to the first end portion and to the second end portion of the resistor for activating the ink ejector on command from the inkjet printer, wherein the first end portion and the second end portion comprise transition sections between the first, second, third, and fourth segments and the electrical conductors and wherein, the transition sections have a length ranging from about 3 to about 4 microns.