Method for assembling a modular printhead assembly

1. A method for assembling a modular printhead assembly, the printhead assembly including a flexible elongate ink-delivery member and a plurality of printhead modules in fluid communication with the ink-delivery member, the ink delivery member and the printhead modules being received in a metal channel, the method including the step of flexing the channel apart at a plurality of locations there-along to enable receipt of respective printhead modules into the metal channel, wherein the flexing is performed against a pivot point located along a centreline of an underside of the metal channel.

2. A method as claimed in claim 1 , wherein the step of flexing involves sequentially flexing the channel apart at successive locations there-along to enable sequential receipt of successive printheads.

3. A method as claimed in claim 2 , further including the step of engaging a robot tool with opposite sides of the channel at each successive location, and with the pivot point located along the centreline of the underside of the metal channel.

4. A method as claimed in claim 3 , further including the step of pushing, with the engaged tool, against the pivot point to flex the channel apart at each successive location.

5. A method as claimed in claim 3 , further including the step of moving the tool relative to the channel to flex the channel sequentially at successive locations.

6. A method as claimed in claim 1 , wherein the step of flexing involves flexing the channel in a plane transverse to its length.

7. A method as claimed in claim 1 , further including the step of fastening capping devices to respective printhead modules.

8. A method as claimed in claim 7 , further including the steps of:

fastening a pair of end moldings to either end of the ink-delivery member; and

seating a camshaft in the end moldings to engage with the capping devices.

9. A method as claimed in claim 1 , wherein the metal channel is a resilient extrusion of a nickel iron alloy.

10. A method as claimed in claim 1 , further comprising the steps of:

flexing the channel apart at a second location subsequent to a first location at which a first printhead module was received;

receiving a second printhead module at the second location; and

pushing the second printhead module along a length of the metal channel in a direction towards the first printhead module.

11. A method for assembling a modular printhead assembly, the printhead assembly including a flexible elongate ink-delivery member and a plurality of printhead modules, the method comprising the steps of:

receiving the flexible elongate ink-delivery member within a metal channel;

flexing the metal channel apart at a first location;

receiving a first printhead module within the metal channel at the first location;

flexing the metal channel apart at a second location subsequent to the first location;

receiving a second printhead module within the metal channel at the second location; and

pushing the second printhead module along a length of the metal channel in a direction towards the first printhead module, wherein

the steps of flexing the metal channel apart flex the channel against a pivot point located along a centre line of an underside of the metal channel.