an inkjet printhead assembly includes an elongate ink feed structure defining a plurality of longitudinally extending ink supply passages and a plurality of spaced apart sets of ink outlets in fluid communication with respective ink supply passages . a plurality of printhead modules are releasably attached to the ink feed structure . each printhead module is in fluid communication with a respective set of ink outlets , and each printhead module includes an elongate printhead chip configured to eject ink supplied from the ink feed structure . each printhead chip is obliquely angled with respect to a longitudinal axis of the ink feed structure . a capping arrangement configured to cap nozzles on each printhead chip .