Ink channel extrusion module for pagewidth printhead

1. An extrusion module for delivering ink to an array of printhead modules defining a pagewidth printhead, the modules being substantially coextensive with the extrusion module, the extrusion module comprising:

a plurality of discrete ink channels each for conveying ink; and

a pattern of holes defined in a surface of the extrusion module via which ink from each of said discrete ink channels is fed from the extrusion module to a printhead module, wherein

the pattern of holes is repeated longitudinally along the extrusion module, one repetition of the pattern corresponding to one printhead module.

2. The extrusion module of claim 1 , further comprising an air channel for the delivery of air to the printhead modules.

3. The extrusion module of claim 1 , wherein the extrusion module is bonded onto a flexible printed circuit board.

4. The extrusion module of claim 1 , further comprising a molded end cap fitted to an end of the extrusion module, the end cap having a number of connectors to which ink and air delivery hoses are connected.

5. The extrusion module of claim 4 , wherein said end cap has a spine including a row of plugs that are received within ends of the respective flow channels.

6. The extrusion module of claim 5 , wherein said end cap clamps onto the ink delivery extrusion module by way of snap engagement tabs formed thereon.

7. The extrusion module of claim 4 wherein said end cap includes connectors which interface directly with an ink cartridge.

8. The extrusion module of claim 1 , wherein a surface of the extrusion module is arranged to seal against annular rings of a number of inlets of each printhead module.

9. The extrusion module of claim 1 , wherein the extrusion module is non-hydrophobic.