Claims
- 1. An ink jet printing process, comprising the steps of:A) providing an ink jet printer that is responsive to digital data signals; B) loading said printer with ink jet recording elements comprising a support having thereon an image-receiving layer; C) loading said printer with an ink jet ink composition comprising water, humectant and a metallized, phthalocyanine colorant, said metallized, phthalocyanine colorant comprising the formula: MPc(SO3X)a(SO2NRR′)b wherein: M represents a metal; Pc represents a phthalocyanine nucleus; each X independently represents hydrogen, alkali metal or an organic cation; a is from 0 to 3; b is from 1 to 4; each R independently represents a substituted or unsubstituted alkyl group having from 1 to about 15 carbon atoms, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; and each R′ independently represents R or hydrogen; with the proviso that a+b is an average of from 2 to 4; and with the further proviso that at least about 70 wt. % of said metallized, phthalocyanine colorant is present in said composition as particles; and D) printing on said image-receiving layer using said ink jet ink in response to said digital data signals.
- 2. The process of claim 1 wherein R represents a substituted or unsubstituted alkyl group having from 1 to about 15 carbon atoms containing a hydroxy group, a substituted or unsubstituted aryl group containing a hydroxy group or a substituted or unsubstituted heterocyclic group containing a hydroxy group.
- 3. The process of claim 1 wherein M is copper, nickel, aluminum, zinc, iron, or cobalt.
- 4. The process of claim 1 wherein R is CH2CH2OH.
- 5. The process of claim 1 wherein M represents Cu or Ni and R is CH2CH2OH.
- 6. The process of claim 1 wherein said colorant is present in an amount of from about 0.2 to about 10 wt. %, said humectant is present in an amount of from about 5 to about 70 wt. %, and the balance is water.
- 7. The process of claim 1 wherein a is 0 or 1 and b is 3 or 4.
- 8. The process of claim 1 wherein at least about 80 wt. % of said metallized, phthalocyanine colorant is present in said composition as particles.
- 9. The process of claim 1 wherein X represents Na, Li, or ammonium.
- 10. The process of claim 1 which also includes a water-soluble dye.
- 11. The process of claim 1 wherein said particles are less than about 0.3 μm in size.
- 12. The process of claim 1 wherein said particles are less than about 0.1 μm in size.
- 13. The process of claim 1 wherein said support is paper, resin-coated paper or a plastic.
- 14. The process of claim 1 wherein said image-receiving layer comprises from about 30% to about 95 weight percent inorganic particles and from about 5 to about 70 weight percent of a polymeric binder.
- 15. The process of claim 1 wherein said image-receiving layer contains organic particles.
- 16. The process of claim 14 wherein said inorganic particles are silica, alumina, titanium dioxide, clay, calcium carbonate, barium sulfate or zinc oxide.
- 17. The process of claim 14 wherein said polymeric binder is gelatin, poly(vinyl alcohol), poly(vinyl pyrrolidinone), poly(vinyl acetate) or copolymers thereof.
CROSS REFERENCE TO RELATED APPLICATIONS
Reference is made to commonly assigned, co-pending U.S. Patent Applications:
Ser. No. 10/232,035 by Andrievsky et al., filed concurrently herewith entitled “Ink Jet Ink Composition”;
Ser. No. 10/231,836 by Adrievsky et al., filed concurrently herewith entitled “Ink Jet Ink Composition”; and
Ser. No. 10/231,837 by Andrievsky et al., filed concurrently herewith entitled “Ink Jet Printing Process”.
US Referenced Citations (15)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0 904 327 |
Aug 2001 |
EP |
WO 9747699 |
Dec 1997 |
WO |