Patent ID: 8267500

Claim:
An inkjet print head to print on a substrate, the print head and the substrate being arranged for motion relative to one another along a first direction, the print head comprising: a series of print modules each extending in a second direction different from the first direction and having orifices to eject ink on respective print lines along the first direction during single pass printing; the orifices that serve adjacent print lines belonging to different modules; a first print module comprising a first set of successive orifices, adjacent to the first print module along the first direction, a second print module comprising a second set of successive orifices, and with respect to a given orifice that belongs to the first set of orifices and serves a given print line, two orifices that (a) belong to the second set, (b) are adjacent to and on opposite sides of the given orifice along the second direction, and (c) respectively serve two print lines such that there is at least one intervening print line between the given print line and a print line served by one of the adjacent orifices, and there is at least one intervening print line between the given print line and a print line served by the other of the adjacent orifices, the intervening print lines being served by orifices not on the first print module and not on the second print module, wherein successive orifices on a given print module are separated by eleven intervening print lines, the print lines served by any two orifices on adjacent print modules are separated by at least one intervening print line, and any two adjacent print lines are served by orifices that lie on print modules that are separated along the first direction by at least four intervening print modules.