Printer having ink delivery system with air compliance chamber

[0048]Referring to FIG. 1, there is shown schematically a printer 1 having an ink delivery system for supplying ink to a printhead. The ink delivery system is similar in function to those described in US2011 / 0279566 and US2011 / 0279562, the contents of which are herein incorporated by reference.

[0049]The printer 1 comprises an ink container 2 having a supply port 6 connected to a first port 8 of a printhead 4 via a first ink conduit 10. A return port 12 of the ink container 2 is connected to a second port 14 of the printhead 4 via a second ink conduit 16. Hence, the ink container 2, the first ink conduit 10, the printhead 4 and the second ink conduit 16 define a closed fluidic loop. Typically, the first ink conduit 10 and second ink conduit 16 are comprised of lengths of flexible tubing.

[0050]The printhead 4 is user-replaceable by means of a first coupling 3 releasably interconnecting the first port 8 and the first ink conduit 10; and a second coupling 5 releasably interconnecting t