Method of assembling a printhead support assembly

1. A method of assembling an inkjet printhead assembly that includes a hollow elongate member of substantially constant cross-section along its length having a base wall, two sidewall sections extending from the base wall, and at least one internal web extending inwardly from said base wall, said sidewall sections and webs defining a plurality of ink supply channels each in fluid communication with a slot extending along the elongate member, and free edges of said sidewall sections and said at least one internal web defining a periphery of a slot extending along the member, a plurality of printhead segment carriers positioned in the slot, at least one printhead segment mounted to each printhead segment carrier and means for connection of each of said ink supply channels to a respective ink supply source, the method comprising the steps of:

mounting at least one printhead on each printhead segment carrier; and

securing that printhead carrier within its respective slot,

wherein the step of mounting the at least one printhead segment on each printhead carrier precedes the step of securing that printhead segment carrier within the slot.

2. A method according to claim 1 , wherein the printhead segment carriers are secured within the slot sequentially, and wherein the printhead segments are installed in the printhead segment carriers to be positioned longitudinally relative to each other before being secured and immobilized within the slot.

3. A method according to claim 1 , wherein the printhead segments are tested for correct operation between installation in their respective printhead segment carriers and installation of their respective printhead segment carriers in the slot.