IP Library Granted Patent US 8,658,715
Granted Patent B2
US 8,658,715 · App. 13/014,057 · Granted Feb 25, 2014

White ink composition

Inventors: Ippei Okuda (Shiojiri, JP); Takayoshi Kagata (Shiojiri, JP); Tsuyoshi Sano (Shiojiri, JP)
Assignee: Seiko Epson Corporation
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Quick Facts
Patent No.
US 8,658,715
App. No.
13/014,057
Granted
Feb 25, 2014
Kind
B2
Abstract

A white ink composition contains a white coloring material and a fixing resin component. The fixing resin component includes a styrene acrylic resin and a urethane resin at a mass ratio of the styrene acrylic resin to the urethane resin (styrene acrylic resin/urethane resin) of at least 1/10.

Claims (11)

1. A white ink composition, comprising:

a white coloring material and a fixing resin component, wherein

the fixing resin component comprises a styrene acrylic resin and a urethane resin at a mass ratio of the styrene acrylic resin to the urethane resin (styrene acrylic resin/urethane resin) of at least 1/10, and

the content of the styrene acrylic resin is 0.5 to 10% by mass based on the total mass of the white ink composition, and

the content of the urethane resin is 0.5 to 10% by mass based on the total mass of the white ink composition.

2. The white ink composition according to claim 1 , wherein the white coloring material is a metal compound pigment.

3. The white ink composition according to claim 1 , wherein the urethane resin is dispersed in a solvent in a particle form.

4. The white ink composition according to claim 1 , wherein the styrene acrylic resin is dispersed in a solvent in a particle form.

5. The white ink composition according to claim 1 , further comprising at least one selected from alkanediols and glycol ethers.

6. The white ink composition according to claim 1 , wherein the white ink composition is used in an ink jet recording printer that records the white ink composition to a medium using an ink jet recording head.

7. The white ink composition according to claim 1 , the mass ratio is at least 2/10.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 26, 2011
From: OKUDA, IPPEI; KAGATA, TAKAYOSHI; SANO, TSUYOSHI
To: SEIKO EPSON CORPORATION
Reel/Frame 025699/0620 →
Priority Claims (1)
JP 2010-014483 · Jan 26, 2010 · national
Continuity (1)
Related Publication 20110184108A1 · Jul 28, 2011