An inkjet printhead including: an elongate fluid manifold having a base defining a plurality of fluid outlets; and printhead chips attached to the base, each printhead chip receiving printing fluid from a plurality of the fluid outlets. All fluid outlets are laterally flared towards a side of a respective printhead chip.

An inkjet printhead includes an elongate fluid manifold having a base which includes a truss structure. The truss structure has webs extending between opposite chords, wherein a plurality of openings between the webs and the chords define fluid outlets. One or more printhead chips are attached to the webs of the truss structure with each printhead chip receiving printing fluid from a plurality of the fluid outlets.

An inkjet printhead includes an elongate fluid manifold having a base which includes a truss structure. The truss structure has webs extending between opposite chords, wherein a plurality of openings between the webs and the chords define fluid outlets. One or more printhead chips are attached to the webs of the truss structure with each printhead chip receiving printing fluid from a plurality of the fluid outlets.

An inkjet printhead includes: an elongate fluid manifold including a longitudinally extending channel having a pair of opposite longitudinal sidewalls and a base defining a floor of the channel; a plurality of printhead chips bonded to the base of the fluid manifold, each printhead chip receiving ink from fluid outlets defined in the floor of the channel; and a plurality of transverse ribs extending across the channel between the sidewalls, each transverse rib extending upwardly from the floor of the channel.

An inkjet printhead includes: an elongate fluid manifold including a longitudinally extending channel having a pair of opposite longitudinal sidewalls and a base defining a floor of the channel; a plurality of printhead chips bonded to the base of the fluid manifold, each printhead chip receiving ink from fluid outlets defined in the floor of the channel; and a plurality of transverse ribs extending across the channel between the sidewalls, each transverse rib extending upwardly from the floor of the channel.

Purpose is to provide an inkjet recording method for forming high-quality color image on a thick recording medium having low thermal conductance rate. The present invention is a single-pass inkjet recording method using an ink set including at least two active ray-curing color inks, and a recording medium having thermal conductivity of less than 0.10 W/(m.Math.K) and thickness of 0.4 mm or more. The ink set containing two color inks satisfy only condition (a), and the ink set containing three or more color inks satisfy conditions (a) and (b): (a) most downstream color ink has a gelation temperature which is 3.0 C. to 15.0 C. higher than that of most upstream color ink, and (b) second or subsequent color ink from the most upstream position in conveyance direction has a gelation temperature which is the same as or higher than that of an adjacent color ink at the upstream position.

Purpose is to provide an inkjet recording method for forming high-quality color image on a thick recording medium having low thermal conductance rate. The present invention is a single-pass inkjet recording method using an ink set including at least two active ray-curing color inks, and a recording medium having thermal conductivity of less than 0.10 W/(m.Math.K) and thickness of 0.4 mm or more. The ink set containing two color inks satisfy only condition (a), and the ink set containing three or more color inks satisfy conditions (a) and (b): (a) most downstream color ink has a gelation temperature which is 3.0 C. to 15.0 C. higher than that of most upstream color ink, and (b) second or subsequent color ink from the most upstream position in conveyance direction has a gelation temperature which is the same as or higher than that of an adjacent color ink at the upstream position.

In certain examples described herein, a depositing mechanism performs an overcoat depositing operation. The depositing mechanism comprises a plurality of print head arrays. Each print head array is arrangeable in a deposit position to deposit an overcoat layer onto a substrate and a service position to enable servicing to be performed. In certain cases, an array controller causes at least one print head array of the plurality of print head arrays to be moved periodically from the deposit position to the service position according to a predefined servicing sequence during an ongoing overcoat depositing operation performed by the depositing mechanism.

In certain examples described herein, a depositing mechanism performs an overcoat depositing operation. The depositing mechanism comprises a plurality of print head arrays. Each print head array is arrangeable in a deposit position to deposit an overcoat layer onto a substrate and a service position to enable servicing to be performed. In certain cases, an array controller causes at least one print head array of the plurality of print head arrays to be moved periodically from the deposit position to the service position according to a predefined servicing sequence during an ongoing overcoat depositing operation performed by the depositing mechanism.

In order to prevent streaks during the ink-jet paint coating of substrates, the invention provides a method for printing sheet-type substrates, in which a substrate (3) is moved in a feed direction (4) past an application device (7) by means of a conveying device (5) and during the movement of the substrate the application device (7) applies a fluid application material (9) drop by drop to the surface (30) of the substrate (3) in a pattern (14) with a pre-defined contour (15), in particular leaving out regions (16), through a plurality of ink-jet nozzles (70) arranged in a row transversely to the feed direction, in response to computer-controlled switching signals, wherein during the application of the pattern (14) and during the movement of the substrate (3) the ink-jet nozzles (70) are moved back and forth transversely to the feed direction (4), preferably in the longitudinal direction of the arranged row of ink-jet nozzles (70), such that the paths (72) traveled by the nozzles (70) over the substrate by the overlap of the movement back and forth with the movement in the feed direction (4) have direction components running perpendicular to the feed direction (4).