Inkjet printhead having optimal number of printhead modules and nozzle rows for out-of-phase printing

1. An inkjet printhead comprising a plurality of transversely aligned color channels, each color channel comprising at least one nozzle row extending longitudinally along said printhead, each nozzle in a row ejecting the same colored ink, wherein said printhead is comprised of a plurality of printhead modules, and the number of color channels is equal to the number of printhead modules.

2. The inkjet printhead of claim 1 , wherein each color channel comprises a pair of nozzle rows.

3. The inkjet printhead of claim 2 , wherein said pairs of nozzle rows are transversely offset from each other.

4. The inkjet printhead of claim 1 , wherein said printhead is a stationary pagewidth printhead, and a print medium is fed transversely past said printhead.

5. The inkjet printhead of claim 4 , configurable such that each of said printhead modules fires a segment from a different color channel, within a predetermined segment-time.

6. The inkjet printhead of claim 5 , wherein said segment-time less than or equal to a line-time divided by the number of nozzle rows, and wherein said line-time is defined as the time taken for said print medium to advance past said printhead by one line.

7. The inkjet printhead of claim 1 , wherein at least one nozzle row has a different peak power requirement than other nozzle rows.

8. The inkjet printhead of claim 1 , wherein each printhead module comprises a respective segment of each nozzle row.

9. The inkjet printhead of claim 8 , configurable such that each segment in a nozzle row is fired sequentially.

10. The inkjet printhead of claim 1 , configurable such that a peak power requirement is equal to an average power requirement.

11. The inkjet printhead of claim 1 , comprising five printhead modules.