EP1041126A2
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Method for ink jet recording or non-absorbing recording medium
Assignee: Seiko Epson Corp
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Filing: 2000-04-03
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Granted: —
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Expires: 2020-04-03
Abstract
Abstract An ink jet recording method using two liquids is provided which can realize good images on ink composition-non-absorbing recording media. An ink composition and a reaction solution are deposited onto a recording medium which does not substantially absorb the ink composition, thereby performing printing. The ink composition comprises a pigment and resin emulsion having a minimum film-forming temperature of 20 °C or below. The content of the polymer particulates in the ink composition is not less than 5% by weight. The weight ratio of the polymer particulates to the pigment is 1 to 20. The reaction solution contains a polyvalent metal salt. Utilization of both the ink composition and the reaction solution can realize good images on non-absorbing recording media.
Inventors
- 👤 Kazuhide c/o Seiko Epson Corporation Kubota
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 01:41
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/54; B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2107; B41J2/2114; B41M; B41M5/00; B41M5/0011; B41M5/0017; C09D11/30; C09D11/32; C09D11/322; C09D11/40; B41J2/135; B41J2/165; B41J2/16505; B41J2/16508; B41J2/16517; B41J2/1652; B41J2/16523; B41M5/0041; B41M5/0058; B41M5/0064
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
103 words
An ink jet recording method comprising the steps
of: depositing a reaction solution and an ink
composition onto a recording medium to perform printing, wherein the recording medium does not substantially
absorb the ink composition; the reaction solution comprises a reactant which,
when brought into contact with the ink composition,
produces coagulate; and the ink composition comprises a pigment and resin
emulsion having a minimum film-forming temperature of
20°C or below, the content of a polymer particulate in
the ink composition being not less than 5% by weight,
and the weight ratio of the polymer particulates to the
pigment being 1 to 20.
Claim 2
Dependent Claim
22 words
The ink jet recording method according to claim
1, wherein the polymer particulates have a diameter of
not more than 100 nm.
Claim 3
Dependent Claim
92 words
The ink jet recording method according to claim
2, wherein the resin emulsion has a film-forming
property, have carboxyl groups on the surface of polymer
particulates, and have a reactivity with a divalent
metal salt such that, when 3 volumes of a 0.1 wt%
aqueous emulsion is brought into contact with one volume
of a 1 mol/liter aqueous divalent metal salt solution,
the time required for the transmission of light having a
wavelength of 700 nm to become 50% of the initial value
is not more than 1 x 10 4 sec.
Claim 4
Dependent Claim
52 words
The ink jet recording method according to any
one of claims 1 to 3, wherein an aqueous emulsion
prepared by dispersing the polymer particulates in a
water medium and adjusting the polymer particulate
concentration to 10% by weight has a contact angle on a
teflon sheet of not less than 70 degrees.
Claim 5
Dependent Claim
52 words
The ink jet recording method according to any
one of claims 1 to 3, wherein an aqueous emulsion
prepared by dispersing the polymer particulates in a
water medium and adjusting the polymer particulate
concentration to 35% by weight has a surface tension of
not less than 40 x 10 -3 N/m (20°C).
Claim 6
Dependent Claim
70 words
The ink jet recording method according to any
one of claims 1 to 5, wherein the polymer particulates
contain 1 to 10% by weight of a structure derived from
an unsaturated vinyl monomer having a carboxyl group and
has a structure crosslinked by a crosslinkable monomer
having two or more polymerizable double bonds with the
content of the structure derived from the crosslinkable
monomer being 0.2 to 4% by weight.
Claim 7
Dependent Claim
22 words
The ink jet recording method according to any
one of claims 1 to 6, wherein the polymer particulates
have a core/shell structure.
Claim 8
Dependent Claim
15 words
The ink jet recording method according to claim
7, wherein the polymer particulates are self-crosslinkable.
Claim 9
Dependent Claim
26 words
The ink jet recording method according to claim
8, wherein the polymer particulates comprise the core
comprising an epoxy-containing resin and the shell
comprising carboxyl-containing resin.
Claim 10
Dependent Claim
27 words
The ink jet recording method according to any
one of claims 1 to 9, wherein the resin emulsion have a
minimum film-forming temperature of 20°C or below.
Claim 11
Dependent Claim
20 words
The ink jet recording method according to any
one of claims 1 to 10, which further contains an organic
solvent.
Claim 12
Dependent Claim
29 words
The ink jet recording method according to any
one of claims 1 to 11, wherein the surface of the
recording medium is formed of a plastic or a metal.
Claim 13
Dependent Claim
30 words
The ink jet recording method according to any
one of claims 1 to 12, wherein the reactant is a
polyvalent metal salt, a polyallylamine, or a derivative
of the polyallylamine.
Claim 14
Dependent Claim
20 words
The ink jet recording method according to claim
13, wherein the polyvalent metal salt is a nitrate or a
carboxylate.
Claim 15
Dependent Claim
61 words
The ink jet recording method according to claim
14, wherein carboxylic acid ions constituting the
carboxylate have been derived from a saturated aliphatic
monocarboxylic acid having 1 to 6 carbon atoms (hydrogen
atoms on the saturated aliphatic hydrocarbon group in
the monocarboxylic acid being optionally substituted by
a hydroxyl group) or a carbocyclic monocarboxylic acid
having 6 to 10 carbon atoms.
Claim 16
Dependent Claim
26 words
The ink jet recording method according to any
one of claims 1 to 15, wherein the reaction solution
further contains triethylene glycol monobutyl ether and
glycerin.
Claim 17
Dependent Claim
44 words
The ink jet recording method according to any
one of claims 1 to 16, wherein the step of ejecting the
droplets of the ink composition on the recording medium
is carried out after the step of depositing the reaction
solution onto the recording medium.
Claim 18
Dependent Claim
44 words
The ink jet recording method according to any
one of claims 1 to 17, wherein the step of ejecting the
droplets of the ink composition on the recording medium
is carried out before the step of depositing the
reaction solution onto the recording medium.
Claim 19
Dependent Claim
15 words
A record produced by the method according to
any one of claims 1 to 18.
References Cited (Backward Citations)
JPS63169846A
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JPH03240558A
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JPH04291654A
Cited
JPH06124875A
Cited
JPH04355658A
Cited
JPH0552581A
Cited
JPH05192413A
Cited
JPH0753500A
Cited
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