EP0812888A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ink for ink jet recording and image forming method using the same
Assignee: Seiko Epson Corp
•
Filing: 1997-06-10
•
Granted: —
•
Expires: 2017-06-10
Abstract
Abstract An ink composition for ink jet recording is provided which can meet many property requirements for an ink composition used in ink jet recording and, in addition, can yield a good image on a recording medium having a layer comprising a water-soluble resin. An ink jet recording method using the same is also provided. An ink composition comprising a pigment as a colorant, an anionic surfactant having a polyoxyethylene group, a dispersant, and water is used to record an image on a recording medium having a layer comprising a water-soluble resin by ink jet recording.
Inventors
- 👤 Hitoshi Ohta
- 👤 Kiyohiko Takemoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 04:32
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/322; B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5218; B41M5/5254
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
An ink composition for ink jet recording on a recording medium, comprising a pigment as a colorant, an anionic surfactant having a polyoxyethylene group, a dispersant, and water, wherein said recording medium comprises a substrate bearing a layer comprising a water-soluble resin.
Claim 2
Dependent Claim
16 words
The ink composition according to claim 1, which further comprises a resin emulsion and/or a saccharide.
Claim 3
Dependent Claim
54 words
The ink composition according to claim 2, which comprises 0.5 to 30% by weight of the pigment, 0.1 to 5% by weight, in terms of resin solid content, of the resin emulsion, 0.01 to 5% by weight of the anionic surfactant having a polyoxyethylene group, and 0.1 to 40% by weight of the saccharide.
Claim 4
Dependent Claim
21 words
The ink composition according to any one of claims 1 to 3, wherein the anionic surfactant is polyoxyethylene nonylphenyl ether sulfate.
Claim 5
Dependent Claim
20 words
The ink composition according to any one of claims 1 to 4, wherein the dispersant is a styrene/acrylic acid copolymer.
Claim 6
Dependent Claim
28 words
The ink composition according to claim 5, wherein the styrene/acrylic acid copolymer has a molecular weight of 1,600 to 25,000 and an acid value of 100 to 250.
Claim 7
Dependent Claim
23 words
The ink composition according to any one of claims 1 to 6, which further comprises 0.1 to 30% by weight of a humectant.
Claim 8
Dependent Claim
26 words
The ink composition according to any one of claims 1 to 7, wherein the water-soluble resin is selected from polyvinyl alcohol and/or a polyvinyl alcohol derivative.
Claim 9
Dependent Claim
54 words
An ink jet recording method comprising the steps of: ejecting droplets of an ink composition and depositing the droplets onto a recording medium to form an image, the ink composition being one according to any one of claims 1 to 8, the recording medium comprising a substrate bearing a layer comprising a water-soluble resin.
Claim 10
Dependent Claim
12 words
A record medium recorded by the recording method according to claim 9.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.