JP2003175669A - Inkjet recording element and printing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a porous inkjet recording element having an instant drying time when being used for inkjet printing; provide a porous recording element having a favorable coating quality (especially, having less cracks); provide an inkjet recording element which presents a favorable picture quality after printing; and provide a printing method using such elements. <P>SOLUTION: This porous inkjet recording element has a base material which carries a porous image-accepting layer having (a) an inorganic particle which is formed into a capsule with an organic polymer having Tg less than 100°C, and (b) a particle having an average particulate diameter of 5 μm or lower. <P>COPYRIGHT: (C)2003,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a recording element and a printing method using the element. Yo
More particularly, the present invention comprises encapsulated particles
It relates to an inkjet recording element. [0002] 2. Description of the Related Art A typical ink jet recording system is described.
Or ink jet printing systems
Drops rise from the nozzle towards the recording element or medium.
Jet at high speed, producing an image on the media. Ink droplets
Or recording liquid) is generally a recording agent (eg, a dye or
Or pigments) and a large amount of solvent. Solvent (also
Is a carrier liquid), generally water, organic materials (eg,
Monohydric alcohol, polyhydric alcohol or a mixture thereof
Object). [0003] Ink-jet recording elements are generally small.
At least one ink-receiving layer or image-forming layer
Comprising a supporting body for supporting such an element.
Has an opaque support, intended for reflective viewing
Observation with transmitted light, having a transparent substrate
Includes those intended for In such an image recording element, the photographic quality
To achieve and maintain the image of the inkjet
The recording element is Easy to get wet, puddling, i.e.
Ink dots coalesce (leading to uneven density)
Not really, -Does not show any bleeding of the image, ・ Absorbs high density ink, dries quickly,
Elements when stacked against a surface or other surface
Demonstrates the ability to prevent blocking together
And .Between supports and / or layers (s)
Discontinuities or defects due to the interaction of
Cracks, flips, combs, etc.) -Unabsorbed dye aggregates on the free surface to crystallize the dye (image
Blooming or bronzing in the formation area
Action) ・ Contact with water or sunlight, tungsten lamps or fireflies
Prevents fading from contact with radiation from light lamps
With optimized image fastness
It is well known that this is not the case. Almost instantaneous ink drying times and good
Inkjet recording elements that simultaneously provide image quality are desirable
No. However, the records elements need to conform
Due to the wide range of ink compositions and capacities,
To achieve these requirements of
Have difficulty. [0006] One side of a porous or non-porous support
Porous or acting as a suitable image receiving layer on both sides
Is non-porous single-layer coating or multi-layer coating
Ink jet recording elements that use printing are known. Non
Recording elements that use porous coatings are generally good
Although having image quality, the ink drying time is poor.
Recording elements using porous coatings are generally colloidal
Contains fine particles and has poor image quality
Also exhibit excellent drying times. [0007] For use with ink jet printing
A wide variety of different types of porous image recording elements are known.
However, there are many open issues in the art.
There are known products that have severe commercial utility.
There are a number of deficiencies that can be limited. Of the porous image recording layer
A major design challenge is to use non-particulate matter as much as possible
Get a good quality, crack-free coating without the need
Is to be able to do that. Non-particulate matter
If too much is present, the image recording layer will not be porous
This results in poor ink drying time. [0008] EP 813,978 discloses fine particles, hydrophilic
Ink binder layer containing a water-soluble binder and oil droplets
It relates to the ink jet recording element used. Only
While this element has oil droplets moving to the surface,
There is a problem in that a change in appearance occurs. US Pat. No. 6,197,381 discloses fine inorganic particles.
, Hydrophilic binder and glass transition temperature below 30 ℃
Comprising a hydrophobic latex having high degree
It relates to the production of a recording sheet from the composition. But
This recording sheet exhibits poor ink drying time
There is a problem in that. [0010] Final Program and Proceedings of IS & T
NIP14, pp. 150-152 contains inorganic core / organic shell particles
And a microporous paper having an image receiving layer. these
The organic shell of is a cationic polymer. But
The nature or origin of these cationic polymers
No mention at all. [0011] SUMMARY OF THE INVENTION The object of the present invention is to
Instant drying when used in jet printing
Providing a porous inkjet recording element having a gap
And Another object of the present invention is to provide a good coating
Recording with high quality (especially low cracking)
Is to provide the element. Another object of the present invention
Is required for ink-jet recording that shows good image quality after printing.
Is to provide the element. [0012] Another object of the present invention is to provide the above-described element.
The purpose is to provide a printing method to be used. [0013] SUMMARY OF THE INVENTION These and other objects are provided.
The objectives are: (a) organic polymers with a Tg below 100 ° C.
Inorganic particles encapsulated with: (b) 5 μm
A porous image receiving layer comprising particles having the following average particle size:
Porous ink jet comprising a substrate carrying the same
This is achieved by the present invention including a recording element. The ink jet recording element of the present invention has good
In coating quality and inkjet printing
Has image quality when used. [0015] DETAILED DESCRIPTION OF THE INVENTION Another aspect of the present invention is as follows. I) Inkjet printer responding to digital data signal
Preparing the center, II) The above-mentioned printer is provided with the above-mentioned ink jet recording element.
Loading the, III) The above-described printer is provided with the ink-jet ink composition.
Loading, and IV) In response to the digital data signal, the ink jet
Printing on the image receiving layer using an inkjet ink composition
Process, And an inkjet printing method including: For the preparation of the encapsulated particles (a) of the present invention
Are metal oxides, metal oxide hydrates, boehmite,
ー, calcined clay, calcium carbonate, aluminosilicate
Or zeolite or barium sulfate
Inorganic particles may be used. In a preferred embodiment of the present invention
These inorganic particles are made of silica (Nalco ™ (N
alco Co.), Ludox ™ (DuPont Corp.), Snowtex
(Trademark) (Nissan Chemical Co.)
), Alumina, zirconia, or titania.
In another preferred embodiment of the present invention, these
The particle size of the particles is 5 nm to 1000 nm. The encapsulated particles used in the present invention
(A) In a preferred embodiment, first, the surface of the inorganic particles
With a silane-containing material and then the presence of the modified particles
Polymerizing one or more monomers under a silane coupling
It can be prepared by chemistry. Useful polymerization techniques
See "Emulsion Polymerization and Emulsio
n Polymers ", edited by P.A.Lovell and M.S.El-Aas
what to find in sar, John Wiley and Sons, 1997
it can. A silane cap useful for modifying the above-mentioned inorganic particles.
3-aminopropyltriethoxysila
3-aminopropyltrimethoxysilane, 3-aminopropyl
Ropirdiethoxymethylsilane, 3-aminopropyldimene
Toximethylsilane, 3-aminopropylethoxydimethy
Silane, 3-aminopropylmethoxydimethylsilane,
N- (2-aminoethyl) -3-aminopropyltrimethoxysi
Orchid, N- (2-aminoethyl) -3-aminopropyltriet
Xysilane, N- (2-aminoethyl) -3-aminopropylmeth
Tyldimethoxysilane, N- (2-aminoethyl) -3-amino
Propylmethyldiethoxysilane, 4-aminobutyltri
Ethoxysilane, 4-aminobutyltrimethoxysilane,
 N- (2-aminoethyl) -3-aminoisobutylmethyldimeth
Xysilane and Gelest catalogue, pp. 105-259 (19
97) other silane coupler agents.
I will. Modification of inorganic colloid used in the present invention
The most preferred silane coupling agent for
Nopropyl triethoxysilane, 3-aminopropyl tri
Methoxysilane, 3-aminopropyldiethoxymethyl
Orchid, 3-aminopropyldimethoxymethylsilane, N-
(2-aminoethyl) -3-aminopropyltrimethoxysila
N- (2-aminoethyl) -3-aminopropyltriethoxy
Sisilane, N- (2-aminoethyl) -3-aminopropylmethyl
Rudimethoxysilane, N- (2-aminoethyl) -3-aminop
And propylmethyldiethoxysilane. Another aspect of the invention is to first provide a surface
One or more species in the presence of inorganic particles without modification
By polymerizing the polymer, the encapsulated particles
To preparing (a). Another aspect is nothing
By adsorbing the polymer on the surface of the particles,
To preparing these encapsulated particles. Another one
One embodiment is before the polymer is formed from the monomer or
In any of the later, between the inorganic particles and the polymer
These capsules by forming chemical bonds
The preparation of activated particles. The cap of the inorganic particles used in the present invention
The organic polymer used for cell formation is less than about 100 ° C.
Preferably it has a Tg of -50 ° C to 65 ° C. Organic polymer
Methods for measuring Tg values are described in John Wiley & Sons, In
c. Published by L.H. Sperling in 1992
"Introduction to Physical Polymer Science", 2nd
Edition. Organic polymers in Table I below
Each of the individual models that make up the polymer
The homopolymer derived from each of the nomers (i)
Tg values were calculated as a weighted sum of all Tg values. [0021] (Equation 1) In the above formula, W is a mono-organic polymer.
X is derived from monomer i
Tg value for the homopolymer. Each homopolymer
The Tg values for ー are from John Wiley & Sons, Inc.
J. Brandrup and E.H.Imm, published in 1975
from "Polymer Handbook", 2nd Edition by ergut
Was. In a preferred embodiment of the present invention,
Used to prepare the organic polymer of the cellularized particles (a)
Acrylate monomers and styrene
Monomers, which are quaternary
Monium group, pyridinium group, imidazolium group, sulf
Phonate group, carboxylate group, or phosphonate
Groups, such as cationic, anionic, or nonionic
It may have a functional group. Examples of useful monomers include
The following monomers are included: N-butyl acrylate,
N-ethyl acrylate, 2-ethylhexyl acrylate, acrylic
Methoxyethyl acrylate, methoxyethoxy acrylate
, Ethoxyethyl acrylate, ethoxyethyl acrylate
Toxiethyl, 2-ethylhexyl methacrylate, acrylic
N-propyl acrylate, hydroxyethyl acrylate, etc.
And cationic monomers (for example, trimethyl acrylate)
L-ammonium ethyl and trimethyl methacrylate
Nmonium ethyl salt, triethyl ammonium acrylate
Ethyl and triethylammonium methacrylate
Ethyl salt, dimethylbenzyl ammonium acrylate
Ethyl and dimethylbenzyl ammonium methacrylate
Muethyl salt, dimethylbutylammonium acrylate
Ethyl and dimethyl butyl ammonium methacrylate
Ethyl salt, dimethylhexyl ammonium acrylate
Ethyl and dimethylhexyl ammonium methacrylate
Muethyl salt, dimethyl octyl ammonium acrylate
Muethyl and dimethyl octyl ammonium methacrylate
Um ethyl salt, dimethyl dodecyl ammonium acrylate
Ethyl and dimethyl dodecyl ammonium methacrylate
Nethyl ethyl salt, dimethyl octadecyl acrylate
Nmonium ethyl and dimethyl octademethacrylate
Salts of silammonium ethyl). Can be used
The salts of these cationic monomers that can be
Chloride, methyl sulfate, triflate and the like. In preparing the encapsulated particles (a),
Examples of organic polymers that can be used in the present invention
Contains poly (n-butyl acrylate-co-vinyl chloride
Rutrimethylammonium), poly (n-butyl acrylate)
-Co-vinylbenzyltrimethylammonium bromide),
Poly (n-butyl acrylate-co-vinylbenzyldimethacrylate)
Tylbenzylammonium), and poly (acrylic acid)
n-butyl-co-vinylbenzyldimethyloctadecyl chloride
Ammonium). In a preferred embodiment of the present invention
And the polymer is poly-n-butyl acrylate,
2-ethylhexyl acrylate, methoxy polyacrylate
Ethyl, ethoxyethyl polyacrylate, poly (acrylic
N-butyl-co-co-trimethylammonium acrylate
Methyl butyl sulfate), poly (n-butyl acrylate-co-meta)
Trimethylammonium acrylate methyl sulfate),
Or poly (n-butyl acrylate-co-vinyl chloride
(Trimethylammonium). Inorganic particles in the encapsulated particles (a)
The mass ratio of the polymer to the organic polymer may be any
No. In a preferred embodiment, the mass ratio is between 0.2: 1 and
20: 1. In another preferred embodiment, the
The mass ratio is from 1: 1 to 10: 1. The following can be used in the present invention.
Example of inorganic particles encapsulated in organic polymer
It is. [0027] [Table 1]In a preferred embodiment of the present invention,
The particles (b) may be metal oxides or metal hydroxides.
Objects (eg, alumina, boehmite, aluminum oxide
Trihydrate, titanium oxide, or zirconium oxide),
Ray, calcium carbonate, calcined clay, inorganic silicate,
Barium sulfate or organic particles (eg, polymer beads
Z) is included. Examples of organic particles useful in the present invention
No. 09 / 458,401, issued Dec. 10, 1999
No. 09 / 608,969 (filed on June 30, 2000)
No./607,417 (filed on June 30, 2000), No. 09 / 608,466
No. 09 / 607,419 (filed on June 30, 2000) (June 2000)
No. 09 / 822,731 (filed on March 30, 2001)
Application) are disclosed and claimed in each specification. Sa
In still yet another preferred embodiment, the particles
The average particle size of (b) is 5 μm or less. In a preferred embodiment of the present invention,
Cellular inorganic particles (a) account for less than 50% by weight of the image receiving layer.
Constitute. In another preferred embodiment of the present invention,
The particles (b) make up at least 50% by weight of the image receiving layer.
Constitute. The image receiving layer of the present invention changes its porosity.
In an insufficient amount to contain
May be. In a preferred embodiment, the polymer
Is a hydrophilic polymer (eg, polyvinyl alcohol).
Polyester, polyvinylpyrrolidone, gelatin, cellulose
-Tel, polyoxazoline, polyvinylacetamide,
Partially hydrolyzed poly (vinyl acetate / vinyl alcohol)
Cole), polyacrylic acid, polyacrylamide, poly
Alkylene oxide, sulfonated or phosphorylated
Polyester and polystyrene), casein, zey
, Albumin, chitin, chitosan, dextran,
Kuching, Collagen derivative, Collodian,
Agar, arrowroot, gar, carrageenan, tragacanth,
Xanthan, rhamsan, etc., or even
For example, poly (styrene-co-butadiene), polyurethane
Tex, polyester latex, polyacrylic acid n-
Butyl, poly n-butyl methacrylate, polyacrylic acid 2-
Ethylhexyl, n-butyl acrylate and ethyl acrylate
With vinyl acetate and n-butyl acrylate
Low Tg latex, such as a copolymer of Polymer ba
Inder is selected to be compatible with each of the aforementioned particles
Should. The amount of binder used depends on the ink jet
Should be sufficient to provide cohesion to the
However, there is a continuous
Minimized so that the pore structure is not blocked by the binder
It should be done. In a preferred embodiment of the present invention,
The mass ratio of the binder to the total amount of the particles is 1:20.
１ ： 1: 5. In addition to the image receiving layer, the recording element
May also contain a base layer next to the support.
The function of this base layer is to absorb the solvent from the ink
It is. Materials useful for this layer include inorganic particles and polymers
Contains binder. In addition to the image receiving layer, the recording element
Is a layer having a function of providing gloss on the image receiving layer.
May also be contained. Useful materials for this layer include
Micron inorganic particles and / or polymeric binder
Including. Inkjet used in the present invention
The support for the recording element can be resin-coated paper, paper,
Stell, or microporous material (eg, Pittsburgh, Penn
Teslin (trademark) by PPG Industries, Inc. of sylvania
Polyethylene polymer sold under the trade name
-Tyvek ™ synthetic paper (DuPont Corp.),
Impregnated paper, such as Duraform ™, and OPPalyte (trademark)
Mark) Film (Mobil Chemical Co.) and US Patent No.
 Other composite films listed in 5,244,861
Such as those normally used for inkjet receivers
Either can be used. Normal for opaque supports
Paper, coated paper, synthetic paper, photographic printing paper support, melt extrusion
Paper, and laminated paper (eg, biaxially oriented support laminated
Things) are included. Biaxially oriented support laminates are disclosed in U.S. Pat.
 5,853,965, 5,866,282, 5,874,205,
5,888,643, 5,888,681, 5,888,683, and
And 5,888,714. these
Biaxially oriented supports include paper-based and single-sided paper-based
Or biaxially oriented polyolefin sheet laminated on both sides
(Generally polypropylene). On transparent support
Refers to glass, cellulose derivatives (eg, cellulose
Stele, cellulose triacetate, cellulose diacetate, acetate acetate
Cellulose ropionate, cellulose acetate butyrate), polye
Stell (eg, polyethylene terephthalate, polyether
Tylene naphthalate, poly-1,4-cyclohexane dimethyl
Renterephthalate, polybutyleneterephthalate,
And their copolymers), polyimides, polyamides,
Polycarbonate, polystyrene, polyolefin (example
For example, polyethylene or polypropylene), polysul
Phone, polyacrylate, polyetherimide, and
These mixtures are included. The papers listed above have high
From high quality paper (for example, photographic printing paper) to low quality paper (for example,
Newspapers). Preferred embodiment
Is manufactured by Eastman KodakCo.
Ektacolor paper is used. The support used in the present invention is preferably 50 to
 Has a thickness of 500 μm, preferably 75-300 μm
Is also good. If desired, antioxidants, antistatics,
Plasticizers and other known additives can be introduced into the support
Good. Improved adhesion of image receiving layer to support
The surface of the support before applying the image-receiving layer to
May be subjected to a corona discharge treatment. Image receiving layer support
Adhesion to the substrate requires applying a primer layer on the support
Can also be improved. Useful in undercoat
Examples of suitable materials include halogenated phenols and partially
Hydrolyzed vinyl chloride-co-vinyl acetate polymer
included. The coating composition may be water or organic.
Although it can be applied from any of the solvents,
These are preferred. Total solids is the most economical method
Selected to produce a useful coating thickness at
Should be used in particulate coating formulations.
A solids content of 4040% by weight is typical. The coating set used in the present invention
The product is applied, for example, by dip coating, wire wound rod coating.
Ting, doctor blade coating, gravure
And reverse roll coating, slide coating,
Bead coating, extrusion coating, curtain coating
Applied by some of the well-known techniques such as
Is also good. Known application and drying methods are December 1989
Research Disclosure published in
sclosure), No. 308119, pp. 1007-1008, for further details
It is described in. Slide coating is preferred,
In this case, the base layer and the overcoat are applied simultaneously.
Can be used. After application, these layers are simply evaporated
It is common to dry by convection heating.
Drying may be facilitated by known techniques such as heat. The above coating composition is prepared by a conventional pre-metering method.
Or a post-weighing coating method (for example, blade co
Coating, air knife coating, rod coating
Coating, roll coating, etc.)
Or it can be applied to both surfaces. Application method
The choice is determined by the economics of operation, which, in turn,
Solids, coating viscosity, and coating
It will determine the formulation specifications, such as speed. The thickness of the image receiving layer is 1 to 60 μm, preferably
Can range from 5 to 40 μm. After coating, the ink jet recording element is
Surface or super calendar process
May be improved. In a preferred embodiment of the present invention
The inkjet recording element has a temperature of 65 ° C, 14000 k
g / m pressure and 0.15 m / s to 0.3 m / s speed
It is subjected to high temperature soft nip calendering. Mechanical durability for inkjet recording elements
To provide, the binder discussed above must be
May be added in small amounts. like this
Additives improve the cohesive strength of the layer. For example, Carbodi
Mid, polyfunctional aziridine, aldehyde, isocyanate
Epoxides, polyvalent metal cations, etc.
Bridging agents can be used. In order to improve the fading of colorants,
UV absorber, radical well known in the field
A quencher or antioxidant is further added to the image receiving layer.
May be. Other additives include pH regulator, adhesion promoter
Agents, rheology modifiers, surfactants, biocides, lubricants, colors
Element, fluorescent whitening agent, matting agent, antistatic agent, etc.
You. To obtain reasonable coatability, for example, surfactants,
Use additives known to those skilled in the art, such as defoamers, alcohols, etc.
May be used. Typical amounts of coating aids are
Active coating of 0.01 to 0.30% by mass based on liquid mass
Auxiliary. These coating aids are non-ionic
, Anionic, cationic, or amphoteric
May be. For an example, see Emulsifier, Volume 1 of MCCUTCHEON
s and Detergents, 1995, North American Edition
It is listed. Use for imaging recording elements of the invention
Inkjet inks are known in the art.
Is knowledge. Generally used in inkjet printing
The ink composition comprises a solvent or carrier liquid, a dye or
Are pigments, wetting agents, organic solvents, detergents, thickeners, preservatives
A liquid composition comprising: Solvent or carrier
The liquid can be just water or a polyhydric alcohol
Water mixed with other water-miscible solvents such as
it can. Organic materials such as polyhydric alcohols are mainly used.
You may use ink that is a carrier or solvent liquid.
No. Particularly useful are mixed solutions of water and polyhydric alcohols.
Medium. Dyes used in such compositions
Are generally water-soluble direct or acid dyes.
You. Such liquid compositions are described, for example, in U.S. Pat.
81,946, 4,239,543, and 4,781,758
It has been extensively described in the prior art, such as in the specification. The following examples are provided to illustrate the invention.
I do. [0046] 【Example】Example 1 Synthesis of encapsulated particles 1 used in the present invention 60 g dry mass Nalco ™ 2329 colloidal silica
(40% by mass solution) and 150 g of distilled water were mechanically stirred.
500 mL 3-neck round bottom frusto-gas machine with nitrogen inlet
Mix in the jar. 3 g of 3-aminopropylmethyldiet
Xysilane was added over 1 minute. PH of this mixture
Is slowly added using 1 mol / L (1N) HCl.
Adjusted to 4.0. The viscosity of this dispersion initially increased
However, it fell again with the addition of the acid. 1.2g odor
Cetyltrimethylammonium bromide (CTAB) and
0.6 g of Triton X-100 ™ was added. This dispersion
Was stirred at room temperature for 1 hour. The above solution was heated to 80 ° C. in a constant temperature bath,
For 30 minutes. 0.12 g of 2,2'-azobis (2-meth
(Lupropionamidine) dihydrochloride was added to the reactor.
Was. 8 g of n-butyl acrylate, 5 g of
Trimethylammonium ethyl methacrylate methyl sulfate
(Solid content 80%), 0.24 g CTAB, 0.12 g 2,2'-A
Zobis (2-methylpropionamidine) dihydrochloride and
A monomer emulsion containing 40 g of deionized water for 1 hour
To supply and encapsulate the above Nalco ™ 2329
did. The solid content of the obtained dispersion was 40% by mass. [0048]Encapsulated particles used in the present invention
Synthesis of 2 45 g of Nalco ™ 2329 colloidal silica (40% by weight
Solution) and 150 g of distilled water with a mechanical stirrer
Mix in a 500 mL three-necked round bottom flask equipped with a nitrogen inlet
did. 3.0 g of 3-aminopropylmethyldiethoxysila
Was added over 1 minute. The pH of this mixture is
Adjust slowly to 4.0 with 1 / L (1N) HCl
did. Although the viscosity of this dispersion initially increased,
It was reduced again by the addition of the acid. 1.2g Cetyl bromide
Limethylammonium (CTAB) and 0.6g Trit
on X-100 ™ was added. Keep the dispersion at room temperature
And stirred for 1 hour. The above solution was heated to 80 ° C. in a constant temperature bath,
For 30 minutes. 0.12 g of 2,2'-azobis (2-meth
(Lupropionamidine) dihydrochloride was added to the reactor.
Was. In this reactor, 4 g of ethyl methacrylate, 4 g of
Butyl methacrylate, 5 g of trimethyl methacrylate
Methyl ammonium sulfate (solid content 80%), 0.24g
CTAB, 0.12 g of 2,2'-azobis (2-methylpropio
Amidine) containing dihydrochloride and 40 g of deionized water
Is supplied over 1 hour, and the above Nal
co ™ 2329 was encapsulated. Of the resulting dispersion
The form fraction was 19.8% by mass. [0050]Encapsulated particles used in the present invention
Synthesis of 3 45 g of Nalco ™ 2329 colloidal silica (40% by weight
Solution) and 150 g of distilled water with a mechanical stirrer
Mix in a 500 mL three-necked round bottom flask equipped with a nitrogen inlet
did. 3 g of 3-aminopropylmethyldiethoxysilane
Was added over 1 minute. The pH of this mixture is
Slowly adjust to 4.0 with / L (1N) HCl
Was. Although the viscosity of this dispersion initially increased,
Again dropped by the addition of. 1.2 g of cetyl tribromide
Methyl ammonium (CTAB) and 0.6 g of Triton
 X-100 ™ was added. At room temperature
Stir for 1 hour. The above solution was heated to 80 ° C. in a constant temperature bath,
For 30 minutes. 0.12 g of 2,2'-azobis (2-meth
(Lupropionamidine) dihydrochloride was added to the reactor.
Was. To this reactor was added 8 g of ethyl methacrylate, 5 g of
Trimethylammonium ethyl methacrylate methyl sulfate
(Solid content 80%), 0.24 g CTAB, 0.12 g 2,2'-A
Zobis (2-methylpropionamidine) dihydrochloride and
A monomer emulsion containing 40 g of deionized water for 1 hour
To supply and encapsulate the above Nalco ™ 2329
did. The solid content of the obtained dispersion was 19.9%. [0052]Element 1 of the invention 254 g of dry calcium carbonate precipitated Albagloss-s (trademark)
(Specialty Minerals Inc.) (70% solution), dry quality
22 g silica gel Gasil ™ 23F (Crosfield Lt.
d.), dry weight 2.6 g of polyvinyl alcohol Airvol
(Trademark) 125 (Air Products) (10% solution), dry weight 21
g of styrene-butadiene latex CP692NA ™
(Dow Chemicals) (50% solution), and 0.8 g Alcog
um ™ L-229 (Alco Chemicals)
Thus, a coating solution for the base layer was prepared.
The solids content of this coating solution is
Therefore, it was adjusted to 35%. This base layer coating solution
The liquid was added at 25 ° C. by bead coating to Ek
Apply on tacolor Edge Paper (Eastman Kodak Co.)
Dry at 60 ° C. with forced air. This ba
Layer thickness is 25μm or 27g / m^TwoMet. A silica gel Nalco (trade name) having a dry mass of 15.0 g was used.
2329 (Nalco Co.) (40% by mass solution), dry mass 3.8
g of encapsulated particles 1 (40% by mass solution) and water
In total, weighing 125 g as a whole
A coating solution for the reservoir was prepared. The above image receiving layer coating solution was heated at 25 ° C.
In bead coating, the above-mentioned base
Coated on layer. Next, this recording element is
Therefore, it was dried at 104 ° C. for 5 minutes. This image receiver
The thickness of the container is 8μm or 8.6g / m^TwoMet. [0055]Element 2 of the invention This element replaces the encapsulated particles 1 with a dry mass
Using 4.0 g of encapsulated particles 2 (19.8% by weight solution)
Prepared similarly to Element 1 except for the following. [0056]Element 3 of the invention This element replaces the encapsulated particles 1 with a dry mass
Using 4.0 g of encapsulated particles 3 (19.9% by mass solution)
Prepared similarly to Element 1 except for the following. [0057]Synthesis of encapsulated particles 1 for comparison 60 g dry mass Nalco ™ 2329 colloidal silica
(40% by mass solution) and 150 g of distilled water were mechanically stirred.
500 mL 3-neck round bottom frusto-gas machine with nitrogen inlet
Mix in the jar. 3.0 g of 3-aminopropylmethyldie
Toxic silane was added over 1 minute. P of this mixture
H is slowly added with 1 mol / L (1N) HCl.
 Adjusted to 4.0. The viscosity of this dispersion initially increased
However, it fell again with the addition of the acid. 1.2g odor
Cetyltrimethylammonium bromide (CTAB) and
0.6 g of Triton X-100 ™ was added. This dispersion
Was stirred at room temperature for 1 hour. The above solution was heated to 80 ° C. in a constant temperature bath,
For 30 minutes. 0.12 g of 2,2'-azobis (2-meth
(Lupropionamidine) dihydrochloride was added to the reactor.
Was. 12.7 g of methyl methacrylate, 0.26 g
g ethylene glycol dimethacrylate, 0.24 g C
TAB, 0.12 g of 2,2'-azobis (2-methylpropion
Amidine) containing dihydrochloride, and 40 g of deionized water
Is supplied over 1 hour, and the above Nalco
(Trademark) 2329 was encapsulated. Solid of the resulting dispersion
The minute was 19.9%. The Tg of these particles was 110 ° C. This
Is the value of a small amount of ethylene glycol dimethacrylate.
Derived from methyl methacrylate, taking into account its presence
By adding 5 ° C to the Tg value of the homopolymer.
It is a thing. [0060]Synthesis of encapsulated particles 2 for comparison 60 g dry mass Nalco ™ 2329 colloidal silica
(40% by mass solution) and 150 g of distilled water were mechanically stirred.
500 mL 3-neck round bottom frusto-gas machine with nitrogen inlet
Mix in the jar. 3.0 g of 3-aminopropylmethyldie
Toxic silane was added over 1 minute. P of this mixture
H is slowly added with 1 mol / L (1N) HCl.
 Adjusted to 4.0. The viscosity of this dispersion initially increased
However, it fell again with the addition of the acid. 1.2g odor
Cetyltrimethylammonium bromide (CTAB) and
0.6 g of Triton X-100 ™ was added. This dispersion
Was stirred at room temperature for 1 hour. The above solution was heated to 80 ° C. in a constant temperature bath,
For 30 minutes. 0.12 g of 2,2'-azobis (2-meth
(Lupropionamidine) dihydrochloride was added to the reactor.
Was. 8 g of methyl methacrylate, 5 g of
Trimethylammonium ethyl methacrylate methyl sulfate
(Solid content 80%), 0.24 g CTAB, 0.12 g 2,2'-A
Zobis (2-methylpropionamidine) dihydrochloride and
A monomer emulsion containing 40 g of deionized water for 1 hour
To supply and encapsulate the above Nalco ™ 2329
did. The solid content of the obtained dispersion was 19.1%. The Tg of these particles was 110 ° C. [0063]Element 1 for comparison This element replaces the encapsulated particles 1 with a dry mass
4.0 g of comparative encapsulated particles 1 (19.9% by mass solution)
Prepared similarly to Element 1 except used. [0064]Comparison element 2 This element replaces the encapsulated particles 1 with a dry mass
3.9 g of comparative encapsulated particles 2 (19.1% by mass solution)
Prepared similarly to Element 1 except used. [0065]Comparison element 3 This element replaces the encapsulated particles 1 with a dry mass
0.6 g of polyvinyl alcohol Gohsenol ™ GH-17
(Nippon Gohsei Co. Ltd.) (10% by mass solution) was used.
Except for this, it was prepared in the same manner as the element 1. [0066]Coating quality Visual evaluation of the dried coating for crack defects
did. The results are shown in Table II below. [0067]Image quality and drying time Dyes using Color Ink Cartridge S020191 / IC3CL01
Epson Stylus Color 740 printer for system-based inks
Used and printed on the recording element. The picture is sheer
, Magenta, yellow, black, green, red, and blue neighbors
Patches, each patch is 0.4 cm wide and long
It had a rectangular shape with a height of 1.0 cm. Between adjacent color patches
Was qualitatively evaluated. Print a second image,
Immediately after ejection from the printer, wipe the image with a soft cloth.
Was. If the ink on the image is not dirty at all,
The rating of the drying time was 1. When the ink is slightly dirty
In addition, the grade of the drying time is set to 2, and when the ink becomes dirty, 3 is set.
And The results are shown in Table II below. [0068] [Table 2] The above table shows that the recording elements of the present invention were used for comparison.
Better coating quality, image quality,
And has an instantaneous drying time. [0070] Other preferred embodiments of the present invention are described in the claims.
In relation, it is described next. [1] (a) It has a Tg of less than 100 ° C.
Inorganic particles encapsulated in an organic polymer, and
(B) a porous material containing particles having an average particle size of 5 μm or less.
Porous substrate comprising a substrate carrying a porous image-receiving layer.
Element recording element. [2] The inorganic particles (a) are made of metal oxide
Material, metal oxide hydrate, boehmite, clay, calcined clay
ー, calcium carbonate, aluminosilicate, zeolite
Or barium sulfate, according to [1].
Recording element. [3] The metal oxide is silica, aluminum
Mina, zirconia, or titania, as described in [2]
On-record element. [4] The inorganic particles (a) have a particle size of 5 nm to 10 nm.
The recording element according to [1], having a particle size of 00 nm. [5] The Tg is -50 ° C to 65 ° C.
Recording element according to [1]. [6] The organic polymer is cationic
Monomer, anionic monomer or nonionic mono
A recording element according to [1], wherein the recording element is derived from a mer. [7] The monomer is a quaternary ammonium
Function, pyridinium function, imidazolium function
Group, sulfonate function, carboxylate function, or
Or [6] containing a phosphate functional group.
Recording element. [8] The organic polymer is an
Required for recording according to [1], derived from
Elementary. [9] The organic polymer contains styrene.
The recording element according to [1], derived from a monomer. [10] I) Ink response to digital data signal
The process of preparing a printer II) The printer according to [1],
Loading the recording element, III) In the printer, the inkjet ink composition
Loading, and IV) In response to the digital data signal, the ink jet
Printing on said image receiving layer using an inkjet ink composition
Process, And an inkjet printing method.

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Elizabeth Angalo             United States of America, New York 14526,             Penfield, Blue Ridge Road               105 (72) Inventor Shao Lu One             United States of America, New York 14623,             Rochester, East Square Dora             Eve 112 F-term (reference) 2C056 EA04 FC06                 2H086 BA15 BA33 BA36 BA45

Claims (1)

1. An inorganic particle encapsulated with an organic polymer having a Tg of less than 100 ° C, and (b)
A porous inkjet recording element comprising a substrate carrying a porous image-receiving layer comprising particles having an average particle size of 5 μm or less.