In one example, a wedge shaped carriage to carry a printhead back and forth over a print substrate during printing.

In a liquid discharge head, a third discharge port array group C1 which discharges a liquid of cyan, a second discharge port array group M1 which discharges a liquid of magenta, a fourth discharge port array group G which discharges a liquid of gray, a first discharge port array group Y which discharges a liquid of yellow, a second discharge port array group M2 which discharges a liquid of magenta, a third discharge port array group C2 which discharges a liquid of cyan are arranged in this order, in a direction. Each of discharge port arrays of the fourth discharge port array group G is formed of a plurality of discharge ports having a diameter smaller than that of a plurality of discharge ports which constitute first discharge port arrays of the second and third discharge port array groups C1, C2, M1 and M2.

A print head assembly comprises a print head unit, a cooling duct, and a blower arranged to pass a gaseous cooling medium through the cooling duct.

The cooling duct has an elongated closed hollow cross-section bounded on at least one side by a flat wall. The print head unit is attached to the flat wall outside of the cooling duct such that the print head unit is cooled by the gaseous medium passing through the cooling duct via thermal contact through the flat wall of the cooling duct.

A joining method includes a process of applying a joining material including a thermosetting resin to a member. The joining material includes an addition-type silicone resin. The joining material includes one or more kinds selected from the group consisting of a methyl-based straight silicone resin, a phenyl-based silicone resin, and a modified silicone resin.

The object is to suitably satisfy a condition for preventing smearing of a printed object and a condition for endowing glossiness to the printed object. As a solution therefor, a plurality of inkjet heads (12y, 12m, 12c, 12k), a print heater (104) being a medium heating heater, and a sub-scan driving unit (16) being an opposing position changing unit that sequentially causes each of positions in a medium (50) in a moving direction of the medium (50) to oppose the respective inkjet heads (12y, 12m, 12c, 12k) are provided, where ink is ink containing solvent and is fixed onto the medium (50) by the solvent being dried, and the print heater (104) dries the ink that has been discharged from one of the inkjet heads and struck onto the medium before another inkjet head further discharges an ink droplet onto a struck position of the ink.

The object is to suitably satisfy a condition for preventing smearing of a printed object and a condition for endowing glossiness to the printed object. As a solution therefor, a plurality of inkjet heads (12y, 12m, 12c, 12k), a print heater (104) being a medium heating heater, and a sub-scan driving unit (16) being an opposing position changing unit that sequentially causes each of positions in a medium (50) in a moving direction of the medium (50) to oppose the respective inkjet heads (12y, 12m, 12c, 12k) are provided, where ink is ink containing solvent and is fixed onto the medium (50) by the solvent being dried, and the print heater (104) dries the ink that has been discharged from one of the inkjet heads and struck onto the medium before another inkjet head further discharges an ink droplet onto a struck position of the ink.

In accordance with an embodiment, an inkjet head comprises a first actuator and a second actuator, a first electrode, a second electrode, a third electrode, and a drive controller. The first actuator and the second actuator constitute a pressure chamber. The first electrode comes in contact with the first actuator from the outer side of the pressure chamber. The second electrode comes in contact with the first actuator and the second actuator from the inner side of the pressure chamber. The third electrode comes in contact with the second actuator from the outer side of the pressure chamber. The drive control section outputs an auxiliary pulse which generates volume change in the pressure chamber that is smaller than volume change of the pressure chamber generated by an ejection pulse for ejecting ink from the pressure chamber to the first electrode, the second electrode, and the third electrode.

A liquid ejecting head unit that ejects a liquid from a nozzle, the liquid ejecting head unit including a driving portion that includes an ejection surface on which a plurality of nozzles that eject the liquid are formed; a fixing plate to which a plurality of the driving portions are fixed, and a holder that (Condition 1) is fixed to a support body, which supports the liquid ejecting head unit, and the holder has a conductive property that electrically connects the support body and the fixing plate to one another, or that (Condition 2) includes a portion that projects from the fixing plate in a direction orthogonal to the ejection surface, and houses the plurality of driving portions.

An inkjet printing apparatus and a method of making gratings are provided. The inkjet printing apparatus comprises a base; a platform provided on the base configured to carry a substrate to be processed to linearly move in a first direction on the surface of the base; and a printhead assembly provided above the platform, wherein the printhead assembly includes a printhead support and a plurality of printheads provided on a side of the printhead support facing the platform, each of the plurality of printheads is provided with a nozzle, and the printhead assembly can move linearly in the first direction. The present invention is adaptable to using inkjet printing technology to make gratings.

In a printing method in which a base layer is formed with glossy ink or the like, a longer time period for drying the base layer is ensured. A metallic ink nozzle section, a superimposed colored ink nozzle section configured to discharge superimposed colored ink that is to be superimposed onto a metallic ink layer, and a non-superimposed colored ink nozzle section configured to discharge colored ink onto a position at which no metallic ink layer has been formed are provided. The non-superimposed colored ink nozzle section is interposed between the metallic ink nozzle section and the superimposed colored ink nozzle section.