Ink jet print head adapted to minimize orientation-induced line-width variation

An ink jet print head adapted to minimize orientation-induced line-width variation, the print head comprising:

• n nozzles, wherein the n nozzles are configured to ink jet a line having a line-width w;
• and
• wherein the n nozzles are located at vertices of a polygon having an average side length savg, and wherein each side length of the polygon is less than 20% deviation from the average side length savg which satisfies the inequality conditions (IIa, IIb) with the coefficient λ=1.3
• w sin(π/n)/[λ+(n/π)sin(π/n)]≦Savg≦w/[1+n/π], where n=2, 3, 4 (IIa), and
• w sin(π/n)/[λ+(n/π)sin(π/n)]≦savg≦w tan(π/n)/[1+(n/π)tan(π/n)], when n=5, 6, 7, (IIb).

An ink jet print head adapted to minimize orientation-induced line-width variation, the print head comprising:

• n nozzles, wherein the n nozzles are configured to ink jet a line having a line-width w;
• and
• wherein the n nozzles are configured to ink jet a polygonal array of ink spots having an average area-equivalent spot diameter d which satisfy the inequality conditions (IVa, IVb) with the coefficient λ=1.3
• w/[1+n/π]≦d≦λw/[λ+(n/π)sin(π/n)], where n=2, 3, 4 (IVa), and
• w/[1+(n/π)tan(π/n)]≦d≦λw/[λ+(n/π)sin(π/n)], where n=5, 6, 7, (IVb).

An ink jet print head adapted to minimize orientation-induced line-width variation, the print head comprising:

• n nozzles, wherein the n nozzles are located at vertices of a polygon having an average side length savg, and wherein each side length of the polygon is less than 20% deviation from the average side length savg;
• and
• wherein each of the n nozzles is configured to ink jet a spot having an average area-equivalent spot diameter d which satisfies the inequality conditions (VIIa, VIIb) with the coefficient λ=1.3
• savg≦d≦λsavg csc(π/n), where n=2, 3, 4 (VIIa),
• and savg cot(π/n)≦d≦λsavg csc(π/n), where n=5, 6, 7, (VIIb).

An ink jet print head adapted to minimize orientation-induced line-width variation, the print head comprising:

• n nozzles, wherein the n nozzles are located at vertices of a polygon and are configured for ink jetting a polygonal array of ink spots having an average area-equivalent spot diameter d;
• and
• wherein each of the side lengths s of the polygon satisfies the inequality conditions (VIIIa, VIIIb) with the coefficient λ=1.3
• d sin(π/n)/λ≦s≦d, where n=2, 3, 4 (VIIIa), and
• d sin(π/n)/λ≦s≦d tan(π/n), where n=5, 6, 7, (VIIIb).