Ink set and image printing method

Patent metadata

Field	Value
Publication number	US-9487668-B2
Application number	US-201514755123-A
Country	US
Kind code	B2
Filing date	Jun 30, 2015
Priority date	Mar 16, 2011
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

An ink set includes a first ink that contains a white material and a first resin; and a second ink that contains a color material other than the white material and a second resin, wherein the first resin includes a component (A) causing cracks when resin of 0.5 g is dropped onto a slide glass and is dried at a temperature of 50° C. and a humidity of 0% RH for 10 minutes, and wherein the second resin includes a component (B) of at least one of polyolefin wax and ethylene vinyl acetate resin.

First claim

What is claimed is:

1. An ink set for ink jet printing comprising:
a first ink that contains a white material and a first resin; and
a second ink that contains a color material other than the white material, and a second resin,
wherein the white material is in the range of 1-20% of the total mass of the first ink,
wherein the first resin is in the range of 1-7% of the total mass of the first ink and is configured to fix the first ink to a printing medium,
wherein the color material is in the range of 1-20% of the total mass of the second ink,
wherein the second resin is in the range of 1-10% of the total mass of the second ink and is configured to fix the second ink to the first ink, and
wherein the first resin includes fluorene resin having a fluorene structure, and the second resin includes at least one of polyolefin wax and ethylene vinyl acetate resin.

2. The ink set according to claim 1 , wherein an average particle diameter of the polyolefin wax is equal to or more than 100 nm and equal to or less than 200 nm.

3. The ink set according to claim 1 , wherein a content of the first resin in the first ink is equal to or more than 1 mass % and less than 6 mass %.

4. An image printing method using the ink set according to claim 1 , the method comprising:
ejecting liquid droplets of the first ink to attach the liquid droplets of the first ink to a printing medium; and
ejecting liquid droplets of the second ink to attach the liquid droplets of the second ink onto the liquid droplets of the first ink attached to the printing medium.

5. An image printing device which prints an image comprising:
the ink set of claim 1 ;
a first nozzle which is configured to eject the first ink of the ink set to a printing medium; and
a second nozzle which is configured to eject the second ink of the ink set onto the first ink which is attached to the printing mechanism.

Assignees

• Seiko Epson Corp

Inventors

• Okuda Ippei
• Sano Tsuyoshi

Classifications

• C09D175/04

  Polyurethanes · CPC title

• C09D11/108

  Hydrocarbon resins · CPC title

• B41J2/01

  Ink jet · CPC title

• C09D11/10

  based on artificial resins · CPC title

• C09D11/40 Primary

  Ink-sets specially adapted for multi-colour inkjet printing · CPC title