received by the International Bureau on 23 May 2014 (23.05.2014)

1. An inkjet ink composition comprising:

one or more of:

a dendritic or hyperbranched polyester acrylate component present in said composition in an amount of 10% to 45% by weight of said composition; an oligomer component present in said composition in an amount of 1 % to 15% by weight of said composition;

a monomer component present in said composition in an amount of 30% to 60% by weight of said composition; and

a photo-initiator component present in said composition in an amount of 1% to 20% by weight of said composition; and

a colorant component present in said composition in an amount of no greater than 5% by weight of said composition, said colorant comprising a white pigment, wherein the white pigment comprises zinc oxide.

2. The ink composition of Claim 1 , wherein said ink composition is formulated for any of brightening, lightening, or diluting one or more full-tone primary inkjet colors.

3. The ink composition of Claim 1 , further comprising an additive component, said additive component including at least one selected from a group comprising:

at least one surfactant present in said composition in an amount of .01 % to 2% by weight of said composition;

at least one leveling additive present in said composition in an amount of .01 % to 2% by weight of said composition; and

at least one stabilizer present in said composition in an amount of .01 % to 2% by weight of said composition.

4. The ink composition of Claim 1 , further comprising a co-initiator component present in said composition in an amount no greater than 15% by weight of said composition.

5. A method for producing a composite lightened primary color inkjet ink comprising:

jetting an amount of a first inkjet ink onto a predetermined region of a substrate;

while said first inkjet ink remains uncured, jetting an amount of a second inkjet ink onto said predetermined region of said substrate;

wherein said first ink is selected from a group comprising a primary color inkjet ink and a transparent white inkjet ink as in Claim 1 and wherein said second inkjet ink comprises the remaining inkjet ink in said group after selection of said first inkjet ink; and

curing said amounts of said first and second inkjet inks jetted onto said predetermined region;

wherein blending of said first and second inkjet inks on said predetermined region in their uncured state produces a composite lightened primary color inkjet ink.

6. The method of Claim 5, wherein said first inkjet ink comprises said primary color inkjet ink and wherein said second inkjet ink comprises said transparent white inkjet ink

7. The method of Claim 5, wherein said first inkjet ink comprises said transparent white inkjet ink and said second inkjet ink comprises said primary color inkjet ink.

8. The method of Claim 5, wherein said primary color inkjet ink is selected from a group consisting of cyan, magenta, yellow and black inkjet inks.

9. The method of Claim 5, wherein said amount of said transparent white inkjet ink is selected to lighten said primary color inkjet ink by a predetermined amount.

10. The method of Claim 5, wherein said lightened primary color inkjet ink comprises a replacement for a pre-formulated light primary color inkjet ink.

1 1 . The method of Claim 10, wherein said predetermined region comprises a region specified by a page description to receive a light primary color inkjet ink.

12. The method of Claim 5, further comprising:

jetting said first and second inkjet inks from separate color channels.

13. A method for producing a lightened primary color Inkjet ink comprising:

blending a primary color inkjet ink, and a transparent white inkjet ink as in any of Claims 1 , 3, or 4, by jetting both inks onto a predetermined area of a substrate so that the two inks blend with each other in the predetermined area of the substrate, wherein said blended inks comprise a lightened primary color inkjet ink; and

curing said blended inks.

14. A system for producing a composite lightened primary color inkjet ink comprising:

a plurality of inkjet inks, each of a different primary color;

a transparent white ink as in any of Claims , 3, or 4;

an inkjet printer having a plurality of color channels;

a controller for said inkjet printer; and

program code for controlling said inkjet printer, which when executed by said controller causes said inkjet printer to perform computer-implemented operations including:

allocating one of said plurality of color channels for delivery of said transparent white ink to a substrate;

responsive to instructions from a page description to deliver a pre- formulated light inkjet ink of a predetermined primary color to a predetermined region of said substrate:

jetting an amount of a first inkjet ink onto said predetermined region;

while said first inkjet ink remains uncured, jetting an amount of a second inkjet ink onto said predetermined region of said substrate;

wherein said first ink is selected from a group comprising the primary color inkjet ink specified by said page description and the transparent white inkjet ink and wherein said second inkjet ink comprises the remaining inkjet ink in said group after selection of said first inkjet ink; and

curing said amounts of said first and second inkjet inks jetted onto said predetermined region;

wherein blending of said first and second inkjet inks on said predetermined region in their uncured state produces a lightened primary color inkjet ink that replaces said pre-formulated light inkjet ink specified by said page description.

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15. The system of Claim 14, wherein said first inkjet ink comprises said primary color inkjet ink and wherein said second inkjet ink comprises said transparent white inkjet ink.

16. The system of Claim 14, wherein said first inkjet ink comprises said transparent white inkjet ink and said second inkjet ink comprises said primary color inkjet ink.

17. The system of Claim 14, wherein said primary color inkjet ink is selected from a group consisting of cyan, magenta, yellow and black inkjet inks.

18. The system of Claim 14, wherein said amount of said transparent white inkjet ink is selected to lighten said amount of primary color inkjet ink to a lightness equal to that of said pre-formulated light inkjet ink specified by said page description.

19. The system of Claim 14, the computer-implemented operations further comprising:

jetting said first and second inkjet inks from separate color channels.

20. A method comprising:

jetting at least one liquid inkjet ink onto a predetermined region of a substrate;

while said at least one liquid inkjet ink remains uncured, jetting an amount of at least one second liquid onto said predetermined region of said substrate,

wherein said at least one second liquid is selected from a group comprising at least one further inkjet ink different from said at least one liquid inkjet ink and at least one non-ink liquid;

wherein said at least one liquid inkjet ink jetted onto said predetermined region of said substrate and said at least one second liquid jetted onto said predetermined region of said substrate blend to form a single composite inkjet ink; and

curing the single composite inkjet ink.

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