Ink supply unit for an ink jet printer

1. An ink supply unit for use with a printhead, the ink supply unit comprising:

(a) a plurality of ink storage chambers for supplying ink to the back surface of the printhead by means of an ink distribution molding, the molding comprising a series of slots for supplying ink via respective ink outlets to the back of the printhead; and,

(b) a filter, configured to fit around the distribution molding and configured to filter ink passing through the molding, wherein

the ink distribution molding and the filter are inserted within a baffle unit, the baffle unit comprising a number of spaced-apart baffles formed within ink channels of respective ink storage chambers to retard acceleration of ink in respective ink storage chambers.

2. The ink supply unit of claim 1 , wherein the baffle unit comprises a series of pierceable end wall portions, the wall portions being pierced by a corresponding mating ink supply conduit, thereby allowing ink flow into the storage chambers.

3. The ink supply unit of claim 1 , wherein the baffle unit is encased in a housing.

4. The ink supply unit of claim 1 , wherein the ink supply unit comprises three storage chambers for supplying respective three colour inks to the back surface of the printhead.

5. The ink supply unit of claim 1 , wherein the printhead is a print head integrated circuit.

6. The ink supply unit of claim 1 , wherein the outlets have a width of approximately 100 microns.

7. The ink supply unit of claim 1 , wherein the printhead is of an elongate structure and is attached to a printhead aperture in the ink distribution molding by a resilient adhesive.

8. The ink supply unit of claim 7 , wherein the printhead is attached along the back surface and sides by applying adhesive to the internal sides of the printhead aperture.