Inkjet printhead for full color pagewide printing

An inkjet printhead comprising:

• a rigid elongate manifold having first, second, third and fourth parallel ink supply channels extending along the manifold and corresponding first, second, third and fourth parallel rows of outlets defined in the manifold, each row of outlets being in fluid communication with a respective one of the ink supply channels, wherein a first ink delivery group contains the first and second rows of outlets and a second ink delivery group contains the third and fourth rows of outlets;
• a first array of printhead chips mounted to a unitary lower surface of the manifold, each printhead chip of the first array receiving ink from the first and second rows of outlets;
• and
• a second array of printhead chips mounted to the lower surface of the manifold, the second array of printhead chips being parallel and aligned with the first array of printhead chips, each printhead chip of the second array receiving ink from the third and fourth rows of outlets,
• wherein a distance between the first and second ink delivery groups is greater than a distance between the first and second rows of outlets or the third and fourth rows of outlets.