Ink-jet image forming method

• US 20030189628A1
• Filed: 01/23/2003
• Published: 10/09/2003
• Est. Priority Date: 01/31/2002
• Status: Active Grant

• Current Assignee: Konica Corporation (Konica Minolta Inc.)
• Original Assignee: Konica Corporation (Konica Minolta Inc.)
• Inventors: Kida, Shuji, Suzuki, Shinichi, Fukuda, Teruyuki, Ohya, Hidenobu, Kaga, Makoto
• Granted Patent: US 6,808,258 B2
• Time in Patent Office: Days
• US Class Current: 347/102
• CPC Class Codes: B41J 11/0024 using conduction means, e.g. by using a heated platen
• CPC Class Codes: B41J 15/005 Forming loops or sags in webs, e.g. for slackening a web or for compensating variations of the amount of conveyed web material (by arranging a "dancing roller" in a sag of the web material)
• CPC Class Codes: B41M 5/506 Intermediate layers
• CPC Class Codes: B41M 5/52 Macromolecular coatings
• CPC Class Codes: B41M 5/5218 characterised by inorganic additives, e.g. pigments, clays
• CPC Class Codes: B41M 5/5254 characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
• CPC Class Codes: B41M 7/0027 using protective coatings or layers by lamination or by fusion of the coatings or layers
• CPC Class Codes: B41M 7/009 using thermal means, e.g. infrared radiation, heat
• CPC Class Codes: Y10T 428/277 Cellulosic substrate

Abstract

An ink-jet image recording method is disclosed. In the method and image is formed by jetting ink on an ink-jet recording medium having an ink absorption layer and optionally a layer provided the ink absorption layer on resin coated paper, in which the outermost layer comprises an aqueous emulsion of thermoplastic resin particles synthesized in the presence of polyvinyl alcohol as a protective colloid for emulsion polymerization, and the recording medium is treated by heat.

Claims

1. An ink-jet image recording method comprising;

forming an image by jetting ink on an ink-jet recording medium having at least one ink absorption layer on resin coated paper, the outermost layer of the ink jet recording medium comprising an aqueous emulsion of thermoplastic resin particles synthesized in the presence of polyvinyl alcohol as a protective colloid for emulsion polymerization, and then

treating the recording medium by heat.

2. The ink-jet image recording method of claim 1 wherein the polyvinyl alcohol has a degree of polymerization from 300 to 1,500.

3. The ink-jet image recording method of claim 1 wherein the polyvinyl alcohol has a degree of saponification of not more than 90 mol %.

4. The ink-jet image recording method of claim 1 wherein glass transition temperature of the thermoplastic resin particles is from 40 to 100°

C.

5. The ink-jet image recording method of claim 1 wherein an average particle diameter of the thermoplastic resin particles is not more than 300 nm.

6. The ink-jet image recording method of claim 1 wherein amount of the thermoplastic resin particles is from 1 to 10 g/m².

7. The ink-jet image recording method of claim 1 wherein the outermost layer further contains inorganic fine particle.

8. The ink-jet image recording method of claim 1 wherein the ink is a pigment ink.

9. The ink-jet image recording method of claim 1 wherein the polyvinyl alcohol having a degree of polymerization of from 1,500 to 4,500.

10. The ink-jet image recording method of claim 9 wherein the method comprises drying between the forming an image and the treating by heat.

11. The ink-jet image recording method of claim 9 wherein treating the recording medium by heat is accompanied simultaneously by pressure with a pressure of from 5 to 20 MPa.

12. The ink-jet image recording method of claim 9 wherein amount of the thermoplastic resin particles is from 1 to 10 g/m².

13. The ink-jet image recording method of claim 9 wherein the outermost layer further contains inorganic fine particle.

14. The ink-jet image recording method of claim 9 wherein the ink is a pigment ink.

15. The ink-jet image recording method of claim 1 wherein the recording medium has one ink absorption layer.

16. The ink-jet image recording method of claim 1 wherein the recording medium has two ink absorption layers.