Patent ID: 7794061
Filing Date: 2010-09-14
Classification: B41J

Abstract:
1. An inkjet printhead comprising: an array of droplet ejectors arranged in adjacent rows, each droplet ejector having a nozzle, a chamber for containing printing fluid and a corresponding actuator for ejecting the printing fluid through the nozzle, each of the chambers having a respective inlet to refill the printing fluid ejected by the actuator; and, a printing fluid supply channel extending parallel to the adjacent rows for supplying printing fluid to the droplet ejectors via the respective inlets; wherein, a pair of the adjacent rows extends along each side of the printing fluid supply channel such that one of the rows in each pair is spaced further from the printing fluid supply channel than the other row of the pair and the inlets are dimensioned differently for each row such that all the chambers in the array have substantially equal refill rates, the droplet ejectors in one row of each pair being interleaved with the droplet ejectors of other row of the pair such that the chambers in said one row overlap the chambers in said other row in a direction parallel to the printing fluid supply channel and in a direction normal to the printing fluid supply channel.