EP1106658A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Liquid composition as well as ink set, image forming method, image forming apparatus and bleed alleviation method using the same
Assignee: Canon Inc
•
Filing: 2000-11-09
•
Granted: —
•
Expires: 2020-11-09
Abstract
Abstract A liquid composition is adapted for use with an anionic ink for forming a high quality image with alleviated bleeding by means of an ink-jet recording system. The liquid composition comprises a first cationic substance and a second cationic substance different from said first cationic substance, of which the first cationic substance is provided in the form of micro-particles at least whose surface is cationic. <IMAGE>
Inventors
- 👤 Masao C/O Canon Kabushiki Kaisha Kato
- 👤 Yutaka C/O Canon Kabushiki Kaisha Kurabayashi
- 👤 Kentaro C/O Canon Kabushiki Kaisha Yano
- 👤 Yuji C/O Canon Kabushiki Kaisha Kondo
- 👤 Hiroshi c/o Canon Kabushiki Kaisha Tomioka
- 👤 Mitsuhiro c/o Canon Kabushiki Kaisha Ono
- 👤 Makiko c/o Canon Kabushiki Kaisha Endo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 13:05
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/0011; B41M5/0017; B41M7/00; C; C09; C09D; C09D11/00; C09D11/30; C09D11/40; C09D11/54
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
39 words
A liquid composition containing a first
cationic substance and a second cationic substance
different from said first cationic substance, said
first cationic substance being in the form of micro-particles,
said micro-particles being cationic at least
at the surface thereof.
Claim 2
Dependent Claim
71 words
A liquid composition to be used with an
anionic aqueous ink containing a coloring material so
as to react with the ink on a recording medium for
printing on the recording medium, said liquid
composition containing a first cationic substance and a
second cationic substance different from said first
cationic substance, said first cationic substance being
in the form of micro-particles, said micro-particles
being cationic at least at the surface thereof.
Claim 3
Dependent Claim
29 words
A liquid composition according to claim 1 or
2, wherein said composition exhibits a zeta potential between
+5 and +90mV attributable to at least one type of
cationic micro-particles.
Claim 4
Dependent Claim
25 words
A liquid composition according to claim 1 or
2, further containing an acid; said composition showing a pH value regulated to
between 2 and 7.
Claim 5
Dependent Claim
23 words
A liquid composition according to claim 4,
wherein the primary dissociation constant pKa of the
acid is not more than 5 in water.
Claim 6
Dependent Claim
26 words
A liquid composition according to any of
claims 1 through 5, wherein the average particle diameter of the cationic
micro-particles is between 0.005 and 1 µm.
Claim 7
Dependent Claim
20 words
A liquid composition according to any of
claims 1 through 6, wherein said second cationic substance comprises a
cationic polymer.
Claim 8
Dependent Claim
31 words
A liquid composition according to claim 7,
wherein said second cationic substance shows a molecular
weight between 400 and 10,000 attributable to said
cationic polymer when observed by gel permeation
chromatography.
Claim 9
Dependent Claim
22 words
A liquid composition according to any of
claims 1 through 8, wherein said second cationic substance comprises at least
two different compounds.
Claim 10
Dependent Claim
24 words
A liquid composition according to claim 9,
wherein at least one of the compounds of said second
cationic substance is a surface active agent.
Claim 11
Dependent Claim
35 words
A liquid composition according to claim 9,
wherein said second cationic substance comprises at least
a compound having a molecular weight not greater than
500 and another compound having a molecular weight
greater than 500.
Claim 12
Dependent Claim
35 words
A liquid composition according to any of
claims 1 through 11, wherein the ratio by weight of said first cationic
substance to said second cationic substance is between
1 : 1 and 100 : 1.
Claim 13
Dependent Claim
22 words
A liquid composition according to any of
claims 1 through 6, wherein said second cationic substance comprises a water-soluble
cationic metal salt.
Claim 14
Dependent Claim
19 words
A liquid composition according to claim 13,
wherein a 1% aqueous solution of said water-soluble metal
salt is acidic.
Claim 15
Dependent Claim
33 words
A liquid composition according to claim 13 or
14, wherein the ratio by weight of said first cationic
substance to said second cationic substance is between
10 : 1 and 1,000 : 1.
Claim 16
Dependent Claim
40 words
A liquid composition according to any of
claims 1 through 15, wherein the total amount of said first cationic substance
and said second cationic substance is between 0.05 and
20 weight % relative to the total mass of the ink.
Claim 17
Dependent Claim
38 words
An ink set comprising in combination a liquid
composition according to any of claims 1 through 16 and
at least an anionic ink selected from a group of inks
of yellow, magenta, cyan, black, red, blue and green.
Claim 18
Dependent Claim
25 words
An ink set according to claim 17, wherein
said group of inks is a combination of inks of
three colors of yellow, magenta and cyan.
Claim 19
Dependent Claim
26 words
An ink set according to claim 17, wherein
said group of inks is a combination of inks of
four colors of yellow, magenta, cyan and black.
Claim 20
Dependent Claim
19 words
An ink set according to any of claims 17
through 19, wherein said ink contains an anionic coloring material.
Claim 21
Dependent Claim
21 words
An ink set according to any of claims 17
through 19, wherein said ink contains a water-soluble dye having
anionic radicals.
Claim 22
Dependent Claim
23 words
An ink set according to any of claims 17
through 19, wherein said ink contains a pigment having anionic
radicals on the surface.
Claim 23
Dependent Claim
21 words
An ink set according to any of claims 17
through 19, wherein said ink contains a pigment and an anionic
compound.
Claim 24
Dependent Claim
45 words
An image forming method comprising a step of
applying a liquid composition according to any of
claims 1 through 16 and an ink containing an anionic
coloring material to a recording medium so as to make
them contact with each other on the recording medium.
Claim 25
Dependent Claim
35 words
An image forming method according to claim
24, wherein said step comprises steps of applying the liquid
composition to the recording medium and subsequently
applying the ink so as to contact with the liquid
composition.
Claim 26
Dependent Claim
34 words
An image forming method according to claim
24, wherein said step comprises steps of applying the ink to
the recording medium and subsequently applying the
liquid composition so as to contact with the ink.
Claim 27
Dependent Claim
40 words
An image forming method according to claim
24, wherein said step comprises steps of applying the ink, the
liquid composition and the ink to the recording medium
in the mentioned order so as to make them contact with
each other.
Claim 28
Dependent Claim
42 words
An image forming method according to claim
24, wherein the liquid composition is applied to the recording
medium by means of an ink-jet recording method adapted
to cause the liquid composition to be ejected from an
orifice according to a recording signal.
Claim 29
Dependent Claim
39 words
An image forming method according to claim
28, wherein said ink-jet recording method is a method of
causing thermal energy to act on the liquid composition
so as to make liquid droplets of the liquid composition
to be ejected.
Claim 30
Dependent Claim
40 words
An image forming method according to claim
24, wherein the ink is applied to the recording medium by
means of an ink-jet recording method adapted to cause
the ink to be ejected from an orifice according to a
recording signal.
Claim 31
Dependent Claim
34 words
An image forming method according to claim
30, wherein said ink-jet recording method is a method of
causing thermal energy to act on the ink so as to make
ink droplets to be ejected.
Claim 32
Dependent Claim
56 words
An image recording apparatus provided with a
recording unit comprising an ink storage section for
storing separately a liquid composition according to
any of claims 1 through 16 and an ink of at least one
color containing an anionic substance and a head
section for separately ejecting said liquid composition
and said ink as liquid droplets.
Claim 33
Dependent Claim
35 words
An image recording apparatus according to
claim 32, wherein said head section comprises a head adapted to
cause thermal energy to act on the ink so as to make
droplets of ink to be ejected.
Claim 34
Dependent Claim
130 words
A liquid composition adapted to form colored
sections on a recording medium when applied to the
recording medium with an ink containing an anionic or
cationic coloring material; said liquid composition containing a first
compound showing the polarity opposite to that of said
ink and a second compound also showing the polarity
opposite to that of said ink; said first compound being in the form of micro-particles; the coloring material in said ink being adapted to
be adsorbed or bound to the surface of the micro-particles
while its molecular state being substantially
equivalent to that in the ink at the time of mixing
said liquid composition and said ink in a liquid state
so as to make the dispersion of said micro-particles
unstable and said micro-particles coagulate with each
other.
Claim 35
Dependent Claim
128 words
An ink set comprising as independent
components thereof an ink containing an anionic or
cationic coloring material and a liquid composition
containing micro-particles electrically charged to the
polarity opposite to that of said coloring material; said liquid composition containing a first
compound showing the polarity opposite to that of said
ink and a second compound also showing the polarity
opposite to that of said ink; the coloring material in said ink being adapted to
be adsorbed or bound to the surface of the micro-particles
while its molecular state being substantially
equivalent to that in the ink at the time of mixing
said liquid composition and said ink in a liquid state
so as to make the dispersion of said micro-particles
unstable and said micro-particles coagulate with each
other.
Claim 36
Dependent Claim
109 words
An image forming method comprising a step of
causing an ink containing a coloring material and a
liquid composition containing a first compound in the
form of micro-particles reactive to said coloring
material and a second compound also reactive to said
coloring material to react with each other as liquid-liquid
reaction on a recording medium and forming
colored sections containing said coloring material and
said first and second compounds; said step including a step of causing said
coloring material in said ink to be adsorbed or bound
to the surface of the micro-particles in said liquid
composition, while maintaining the molecular state of
said coloring material in said ink.
Claim 37
Dependent Claim
130 words
An image forming method comprising a step of
causing an ink containing a coloring material and a
liquid composition containing a first compound in the
form of micro-particles reactive to said coloring
material and a second compound also reactive to said
coloring material to react with each other as liquid-liquid
reaction on a recording medium and forming
colored sections containing said coloring material and
said first and second compounds; said step including: a step of causing said coloring material in said
ink to be adsorbed or bound to the surface of the
micro-particles in said liquid composition, while
maintaining the molecular state of said coloring
material in said ink; and a step of causing said coloring material in said
ink to react with said second compound in said liquid
composition.
Claim 38
Dependent Claim
156 words
An image forming method comprising a step of
causing an ink containing a coloring material and a
liquid composition containing a first compound in the
form of micro-particles reactive to said coloring
material and a second compound also reactive to said
coloring material to react with each other as liquid-liquid
reaction on a recording medium and forming
colored sections containing said coloring material and
said first and second compounds; said step including: a step of causing said coloring material in said
ink to be adsorbed or bound to the surface of the
micro-particles in said liquid composition, while
maintaining the molecular state of said coloring
material in said ink; a step of causing said micro-particles to become
less dispersed and coagulate as a result of adsorbing
or binding said coloring material to the surface
thereof; and a step of causing said coloring material in said
ink to react with said second compound in said liquid
composition.
Claim 39
Dependent Claim
169 words
An image forming method comprising a step of
causing an ink containing a coloring material and a
liquid composition containing a first compound in the
form of micro-particles reactive to said coloring
material and a second compound also reactive to said
coloring material to react with each other as liquid-
liquid reaction on a recording medium and forming
colored sections containing said coloring material and
said first and second compounds; said step including: a step of causing said coloring material in said
ink to be adsorbed or bound to the surface of the
micro-particles in said liquid composition, while
maintaining the molecular state of said coloring
material in said ink; a step of causing said micro-particles to become
less dispersed and coagulate as a result of adsorbing
or binding said coloring material to the surface
thereof; and a step of causing the part of said coloring
material not participating in the reaction with said
micro-particles in said liquid composition to react
with said second compound in said liquid composition.
Claim 40
Dependent Claim
100 words
An image formed by causing an ink containing
a coloring material and a liquid composition containing
a first compound in the form of micro-particles
reactive to said coloring material and a second
compound also reactive to said coloring material to
react with each other as liquid-liquid reaction on a
recording medium, said image containing colored
sections therein; said colored sections containing said coloring
material of said ink in a state of being adsorbed or
bound to said micro-particles of said liquid
composition as single molecules and in a state of
having reacted with said second compound of said liquid
composition.
Claim 41
Independent Claim
145 words
A method of alleviating bleeding appearing
along the boundary lines of first areas of a color and
second areas of another color located respectively
adjacent to said first areas in an image formed by
applying liquid droplets to a recording medium; at least either said first areas or second areas
being colored sections formed by causing ink containing
a coloring material and a liquid composition containing
a first compound in the form of micro-particles
reactive to said coloring material and a second
compound also reactive to said coloring material to
react with each other as liquid-liquid reaction on a
recording medium, said colored sections containing
therein said coloring material of said ink in a state
of being adsorbed or bound to said micro-particles of
said liquid composition as single molecules and in a
state of having reacted with said second compound of
said liquid composition.
References Cited (Backward Citations)
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