JPS5866948A - Capsulated toner - Google Patents

Abstract

PURPOSE:To obtain a capsulated toner exerting no influence on the life of a photoreceptor and the life of a carrier and having high pressure fixability and no offsetting property by forming the outer wall of a capsulated toner with a double wall consisting of polyurea resin and polyamide resin, or polyurethane resin and polyamide resin. CONSTITUTION:Acid chloride and polyisocyanate are dissolved in a hydrophobic liq. contg. a core substance, and the soln. is emulsified and dispersed in an aqueous soln. contg. polyamine and a dispersant. By making the emulsion neutral or weakly alkaline, a polyamide resin wall is formed on each interface between the hydrophobic liq. and the hydrophilic liq., and a polyurea resin wall is formed at the inside of the polyamide resin wall by heating to obtain double-walled capsules. By adding polyol to the hydrophobic liq., double-walled capsules each having a polyurethane resin wall at the inside are obtd. A dispersion of double- walled capsules contg. a coloring material and a magnetic material is washed in water, dried by spraying, and mixed with a very small amount of a fluidizing agent such as silica to obtain a dry powdered capsulated toner.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a toner used in electrophotography, electrostatic ML recording, magnetic recording, or electrostatic printing, and in particular,
This invention relates to a capsule toner suitable for pressure constant layering.

Conventional electrophotography is R, M, Chef Art 11 [Elect 07 O) Graphic J (R, M, 8 cbuffer
t.

“Electrophotography” 2ndc
d.

Focal Press (/P7j))I
As with IC Kichinsu tLC, we used the Kojinden JJl elephant to form a charge charge on the sphere and further looked at it.
#L copper particles are layered on I'11 by t-electrostatic attraction to form an image. Electrophotography is broadly divided into a method in which images are recorded on photosensitive paper (electrofax method) and a method in which images are recorded on plain paper by toner transfer (Xerox method). The Xerox method is superior in terms of distribution! There are two methods: the Carlnon method, which uses a structure of a photoconductor and a conductor, and the NP method, which uses a structure of an insulator, a photoconductor, and a conductor in the upper layer.

Visualization methods using latent image toner include a two-component development method and a one-component development fJI method.

Two-component 81t Obata and the gadfly, carry the toner to the silent statue +
This method uses carrier particles as a stage. In this two-component development method, for example, the cascade JA law, U.S. patent λ
, 714. No. 3 and US Patent.

A magnetic furan development method is known, which has been dedicated to the specification of No. 716, Reference ≠ O〢.

A method for visualizing 1lflJJ without using carrier particles is the one-component JA imaging method. This -component development method uses M+3. /Jλ, is listed in the specification of oiJ issue.

The toner image that visualizes the image may be transferred to plain paper or the like, if necessary.

Electrostatically attached toner particles will cause friction and vibration if left as they are! Since the image is scattered due to Ib, etc., it is fixed as an image by performing a fixing process.

Toner fixing methods in electrophotography are broadly classified into three types: heat fixing, solvent fixing, and pressure mud layer.

Materials appropriate for each fusing method are selected and used for the toner particles.

For the pressure fixing method in which pressure is applied to the toner particles to fix the toner particles to the IIkl imaging support, wood-%
M+11g3. λ2 and t are listed in the issue booklet. The fever is also #! Pressure-fixing properties inherently have the advantage of being free from the woodcutter's obstacles and techniques, as it does not require the use of punishment, is fast, and can be followed by quick-footers.

However, the pressure fixability is lower than that of foot shields using heating, etc.
It has poor fixing properties, easily peels off when rubbed, and requires a fairly high pressure chamber. Since it has a gloss of 4 and requires a considerable amount of pressure, the pressure roller has to be very large, and this has serious drawbacks such as the formation of a sleeping area when downsizing the entire device. Rarely.

Capsule toner is known as a toner for pressure runners in order to realize the pressure foot 71 which has good fixability and does not require pressure. Capsule toner is Tokuko Shozansan-tt.
As explained in the specification of No. O, it has a structure in which a liquid recording display material such as an oily liquid is contained in a fine powdered container. This capsule toner has, for example, the properties required for the dry type electronic coating #3, that is, it has good S properties as a toner, has good development properties, and does not stain the carrier or m-element body surface. It is necessary to have characteristics such as good pressure fixing properties and low occurrence of the offset JA phenomenon to the pressurized loaf.

However, conventional capsule toners have insufficient scatterability as toners for dry electrophotography.

That is, when conventional capsule toners are dried by spray drying or other drying methods, a large number of capsule particles may be secondarily crushed, or immediately after drying,
Even if it is a powder, if it is left at room temperature for a long time or under high temperature and high humidity, it may aggregate, or when capsule toner is actually placed in the developing device and development is being carried out, aggregation may occur, causing problems with the development. Disorders such as a marked deterioration of the S power of the visible self were likely to occur.

Therefore, an object of the present invention is to provide a capsule toner with excellent powder characteristics. Furthermore, it does not break when exposed to shock within the VCRITA imager, but breaks only in the pressure-constant area, and exhibits excellent properties for imparting charging, insulating, or non-electrical properties, extending the lifespan of photoreceptors and carriers. The toner has good pressure fixing properties without dropping the image quality, and also has excellent offset properties. Furthermore, even in the case of a one-component capsule toner containing magnetic imitation particles in the core, the present invention is intended to provide a capsule toner with excellent developability, pressure fixability, offset performance, and transferability.

It is an object of the present invention to provide a capsule toner which is conventionally formed from a core material containing a front body recording material and a wall enclosing the core material, in which one wall is composed of a polyurea resin and a polyamide resin. Kabechi A1 was combined with a capsule toner characterized by having walls made of polyurethane resin and polyamide resin.

Here, the polyurethane/resin or polyurea resin used for the capsule wall is, for example,
According to the microcapsule manufacturing method described in the patent specification and the specification of the patent application No. 2007, capsule toner is made from mold obtained from the core material of capsule toner.

The shield manufacturing method used for manufacturing the capsule toner of the present invention is as follows.

Acid clophyte (substance A) and polyinocyanate (B*'jl) are included in the hydrophobic body containing the core substance, and this is added to the polyamine tC substance** and the water-sulfur solution 'f' in the sensitizing agent. Milk 11Z is dispersed inside.

When an alkali is added to make the pH of the dispersion neutral or alkaline, it becomes a hydrophobic liquid/! A polyamide resin wall forms at the interface of the aqueous body. Thereafter, when the dispersion is heated in the range from ao 0 to ri o O, a wall made of polyurea resin is formed from the inner ring and the expected double-walled capsule is obtained.

By further adding a polyol (D-Moken) to the hydrophobic liquid and carrying out the above treatment, a double-walled capsule having a polyurethane resin wall inside can be obtained.

The dispersion of two-walled capsules containing the core material (coloring material and/or magnetic material) obtained in this way is washed with water, sprayed with tin, and then mixed with @Den's fluidizing agent. A smooth capsule toner is obtained. Here, as the fluidizing agent, what is generally called a slenderizing agent is used, for example, /Lica, then A1 trade, B1 quality, C
Although examples of the substance and substance D will be described, the present invention is not limited thereto.

Examples of acid chlorides (A1111) include the following compounds: adiboyl chloride, sebacoyl chloride, phthaloyl chloride, isophthaloyl chloride, terephthaloyl chloride, fumaroyl chloride, /, cyclohexane Disulfonyl chloride, Q,4c'-biphenyldisulfonyl chloride,
Phosgene, ref.

-sulfonyl dibenzoyl chloride, polyesters with acid chloride functional groups, polyamides with acid chloride functional groups, etc.

Specific examples of wall film formation'@Trade B include those having an isocyanate group or an inthiocyanate group such as ty+J, such as m-phenylene diisocyanate, p-phenylene diisocyanate, λ16-lylene diisocyanate, co, and dirt. lylene diincyanate, naphthalene-/, ≠-diiso7anate, diphenylmethane-hiro, diiso7-diiso7
Anato, 3゜3/-dimethoxy-e, +'-biphenyl diisocyanate, 3.3/-dimethyldiphenylmethane-$, 4C'-cyinzo I auto, xylyle/-
/, 4C-diisocyanate, xylylene-1,J-diisocyanate, 4A/-diphenylglopandiinocyanate, trimethylene diinocyanate, hexamethylene diinocyanate, bupylene-1,-diinocyanate , Futhyrene-I, Kodiinocyanate,
ethylidi/diino7anate, cyclohexylene/-l,
λ-Diinocyanate, 7chlorohexylene/, 4C-
Diisocyanate, p-phenylene dithiocyanate, xylylene-/, 411-diisothio7anate,
Diisocyanates such as ethyridine diinothiocyanate, dithiocyanate, da, triinocyanate, -triphenylmeth/triincyanate, toluene-λ, II, 4
-) triinocyanates such as lynn7anate, polymethylene polyphenylisocyanate), 4', 4c'-
Dimethyldiphenylmethane, λ, co', z, it-
Tetrainocyanates such as tetraino7anate, adducts of hexamethylene diinocyanate and hexanetriol, λ*4') adducts of lyre/diincyanate and prenocatechol, adducts of tolylene diisocyanate and hexatriol; There are polyiso7anate prebopolymers such as a sulfur compound, an adduct of tolylene diisocyanate and trimethylolpropane/θ addition, and an adduct of tolylene diisocyanate and trimethylolpropane.

As specific examples of the wall-forming material C, the following materials may be used. Ethylenediamine, trimethylenediamine, tetramethylenediamine/, pentamethylenediamine, hexamethylenediamine, p-phenylenediamine, m-phenylenediamine, piperazine, -monomethylpiperazine, λ, j-dimethylbiyradi/, cohydroxytri Methyl L/7 diamine, diethylene triamine/, trimethylene diamine, diethylaminopropylamine, tetraethylenepentamine, amine adducts of epoxy compounds, etc.

Specific examples of wall-forming materials include the following materials. Catechol, resorcinol, hydroquinone, l,2-dihydrox-7-1-methylbenzea, /, J
-Hydroxy-! -Methylbenzene, 31≠-dihydroxy-L-methylbenzea, J, J-dihydroxy-l
-Methylbenzene/, λ, 4A-dihydroxyethylbenzene, l.

3-naphthalenediol, 1lj-naphthalenediol, λ,7-naphthalenediol, λ,3-naphthalenediol.

The main object of the present invention is to obtain a capsule toner with excellent powder properties, specifically, to obtain a powder that is smooth and does not produce powder, and which is protected by being opened inside the tank. The objective is to obtain a powder that maintains these properties.

We achieved the above object by using polyurethane resin or Voricrea resin as capsule wax and covering the outside with a wall made of polyamide resin. The important movement here is polyamide wM
The outer wall consists of #I, which is the substance A and C**
Among various combinations of jL. Among the,
The polyamide wall is made of a combination of terephthalyl chloride-hexamethylenediamine, sebacoyl chloride-hexamethylene diamine, terephthalyl chloride-phenyl diamine, and terephthalyl chloride-triethylenetetrami. It showed the effect of improving body characteristics.

The hydrophilic liquid used in the present invention is one that is incompatible with the hydrophobic liquid used in combination with a 4B contact rate, and
11! For example, water, acetate, methanol, ethanol, propatool, ethylene glycol, glycerin, /, ≠-
Lid/diol, phenol, polyethylene glycol, ethylenedi'76:y, trimethylenediamine, ketonemethylenediamine, diethylenetriamine, triethylene/tetotsumi/, detraethylenebe/tami/, diethylaminepropylamine/, pyridine, lcetonitrile, -
Acid, sulfuric acid, nitric acid, phosphor, lactic acid, -acid, acetic acid, butyric acid, water-
Ammonium chloride, formaldehyde, acetaldehyde, propyl 1-rudehyde, butyraldehyde, lauryl alcohol Ken #l W % Alchemist/Sulfo/#
salts, polyethylene glycol oleyl ether, polyethylene sorbita monooleate, etc.

The hydrophobic liquid that becomes the core material of the capsule toner will be described later, and a low boiling point solvent or polar solvent, which will be described later, can be used in combination with this hydrophobic liquid.

Examples of low boiling point solvents include n-inter/, methylene chloride, ethylene chloride, carbon disulfide, acetone,
#Resistance agents such as methyl, chloroform, methyl alcohol, tetrahydrofuran, n-hexane, 11m tetrachloride, Shimin ethyl, ethyl alcohol, methyl ethyl ketone, benzene, ethyl ether, and petroleum ether etc.
It is also used by mixing t-j.

As the polar solvent, dioxa/, cyclohexano/, methyl isobutyl keto/, dimethylformamide, etc. are used.

A typical example of the liquid that becomes the continuous phase is water, but its equivalents include ethylene glycol, glycerin, butyl alcohol, octyl alcohol, and the like.

In addition, the hydrophobic liquid contained in the core substance of the capsule toner contained in the 2m & capsule produced by the above manufacturing method is a recording display material. This is what I read.

Colorants and thread additives can be used only on walls or as needed.
It can be applied to both the wall and the core material.

As the colorant, all the dyes and fine materials conventionally used in dry or wet toners can be used. For example, for black toner, carphone black, and for chromatic colorants, for example, Iku: w4 phthalocyanino, sulfo/amide #s4 body, benzidine derivatives collectively known as diazo yellow: polytan dust, phosphoric acid, molybutenic acid and xa/tene dye & rhodamine B, azo There are carmine-based preparations such as Carmine 6B1 Quinacridone Suhimotoi.

If the binder contained in the core material contains a coloring agent, it can disperse and retain this and form a visual image by fixing it on the image forming support and waiting for the intensity of the light. Its main function is to use high-boiling point M solvents that are conventionally used to finely disperse oil bath photographic additives contained in silver halide color light-sensitive materials in aqueous media;
Polymers that have been conventionally used as cores of pressure-fixable capsule toners can be used.

Examples of the former type of bath salts include If&l Patent J.
, JJJ, No. 027, 2,133. j/4c issue, same 2
, 133. j/4c, Chikoan≠6-ko 3233, US Patent J, 2t7. /3 No., British patent yzr, 4cat
No., Curved 'M! +4'7-/OJ/, British Time lff102 Coco, No. 753, US Patent J, Wit.

303g, JP-A-Shojl-44, OJ7%, %openingj1)
-12071, National Patent Co., 313. λ6ko, sameko, tsko, 313, 1st Tsukasa J, j! 44°711, J, 677, . No. 137, 3.67A, /≠K, j, 700, ≠J, 3゜7at, 14ci
-Vf, No. 3,137,163, 0Lb2,131.
J#9, JP1/1/-272, 2/, J/-λ7
ri, No. 22, No. 31-24031, No. j/-coro 03
6th, episode 30-Aλ63λ, special public show ψ? -2?4AA
/ No. 3, U.S. Pat. No. 3, No. 303, U.S. Pat.
Try issue, etc. PR1er with a high boiling point which is even more preferably used in the present invention V? Examples of dl include esters (e.g., evaphthalic acid esters, phosphoric acid esters, citric acid esters, aromatic acid esters, fatty acid esters, charcoal esters, etc.), amides (e.g., Items such as fatty acids, amide tin, sulfo/amides, etc.), ethers (e.g., allyl ether), alcohols, hair fufuin tombs, etc. are being discussed. Particularly preferably used surfactants having a boiling point include, for example, phthalic molten esters (such as dibutyl phthalate, dibutyl phthalate, dioctylphthalate, dioctyl phthalate, dinonyl phthalate, and difluorophthalate). , butyl phthalyl butyl glycolate, dibutyl monochlorophthalate, etc.), phosphoric acid varnish + hin <For example, tricresyl phosphate, trioctyl phosphate, tris (isopropylphenyl) phosphate, tributyl phosphate, trihexyl phosphate, trioctyl phosphate , trinonyl phosphate, tridecyl phosphate, trioleyl phosphate, tris(butoxyethyl) phosphate, tris(chloroethyl) phosphate, tris(dichloropropyl) phosphate, etc.), citric acid esters (e.g.
0-7 Cetyl triethyl (or butyl, hexyl, octyl, nonyl, decyl) citrate, triethyl (or butyl, hexyl, suctyl, nonyl, decyl, tridecyl) citrate, etc.), An, Toshikajo ester IA (for example, Butyl (or hexyl, hephthyl, octyl, ]yl, decyl, dodecyl, tridecyl, tetrazofur, hexadecyl, octadecyl, oleyl)benzoate, hardyl 0-methylbenzoate, decyl 9
-methylben/x-t, octyl 0-chlorobenzoate, lawaryl p-chlorohenshade, furovir λ.

Hiro-dichlorobenzoate, Okunal λ, San-dichlorobenzoate, Stearyl λ, l-dichlorobenzoate, Oleyl λ, San-dichlorobenzoate, Octyl p-methoxybenzoate), fatty acid ester agents (
For example, hexadecyl, myristate, shifted xyethyl succinate, dioctyl adipate, dioctyl azelate, tecamethylene/, 10-diol diacetate, doria-heptine, triphthene, be/zyl caprate, pentaerythritol tetracafuroid, Isonru'8 Idocacbrilate, etc.), Amide Th (?!1
Examples include N,N-dimethyllauramide, N,N-diethylfurylamide, N-butylbenzenesulfonamide, etc.), trioctyl trimellitate, and chlorinated paraffins.

Examples of the polymer contained in the core material of the pressure mud layer type capsule toner include Tokko Sho Santer 15g No. 1 and Tokko Shoj≠
-r i, o, U.S. Patent 3. Zari J, No. 931, JP-A No. 11-741471, JP-A No. 11-741471, JP-A No. 11-74147, JP-A No. 11-1104cy, JP-A No. 11-31.
Ko≠No. 3, Tokushaaki! 3-10λ1, JP-A f18! λ−
//9937, Wait Ii@1I8jλ-10113μ, JP-A Shoj coater trJ1, JP-A Shoj/-/J-IJ
No. I, Vf-Akihiroter/No. 773y, JP-A-Kai≠r-'y
tyii, Japanese Unexamined Patent Publication No. Sho≠t-71032, etc.

The oil-bath photographic pick-up agent Jt contained in the halogen 1 Arsenic color photographic MA-3'e material is also used to finely disperse the electropolymer in the pressure-fixable capsule toner. It can be used as the core material of
It is described in θ41c24c.

Polymers that are historically preferred for use in the core material of the present invention include polyolenoin, olefin polymers, polymers, polymers, epoxy resins, polyester resins, rubbers, polyvinylpyrrolidone, polyamides, and polymers. o
N-Yi/Ten-chi, Methyl vinyl ether-anhydrous maleic base, Male 17M modified phenolic resin, phenol-modified chill/resin, silicone resin, epoxy shochu 7
Enol 11 fat, natural resin modified phenol resin, amino flank, 7 recon resin, polyurethane, polyurea, polyester, acrylic acid and long alkyl acrylate V-to! L-oligomers, co-polymerized oligomers of crylic and long-alkyl methacrylates, child Listere/, polyhinyl acetate, polyvinyl chloride, etc., and use electrolyte as the core material. The one with a molecular lid is a bite.The core is a boiling point solvent or an electrolyte that can be marketed in a sieve. It is also possible to use a mixture of a boiling point medium and a polymer.Next, as a core substance, when the capsule is pressed under constant pressure, it comes out. Now, there is a sharp cutter that prevents the core *negative and outer* from being overlapped with the carbon ratio low 7-, and it can be used for "Kan-shaped" which was not conventionally used in capsule toner. . An example of this is the opening tl1M j 3; -/≠)360
No. 11-44236 of Japanese Patent Application Publication No. 11-44236, there is a fluorine #Ii temple which is located in the same place.

Other substances that are removed in the core material include magnetic particles, which are once used when it is desired to obtain magnetic toner.

For example, JP-A-ShojJ-//IθjJ, JP-A-Sho 5
3-ioJt issue, % open bite! 1-/44411 etc.1
It is dedicated. Examples of magnetic particles more preferably used in the present invention include metals such as cobalt, iron, and nickel, aluminum, cobalt, copper, copper, lead, magnesium, nickel, tin, zinc, gold, mackerel, antimony, beryllium, alloys or mixtures of metals such as bismuth, cadmium, calcium, manganese, titanium, tungsten, vanadium and zirconium, aluminum oxide,
Metal compounds including iron oxides, steel oxides, nickel oxides, saponified lead, zirconium oxides, titanium oxides and metal compounds such as magnesium oxides, - refractory nitrides such as chromium oxides, tungsten carbide/ and carbides such as heptagonal carbide, ferromagnetic ferrites, and their filters.

1 liter capsule for containing the above-mentioned hydrophobic liquid
In the process, a step of emulsifying and dispersing the hydrophobic ag substance, which is the core-1#, into a hydrophilic liquid is necessary.

In order to facilitate emulsification and prevent coalescence of the particles of the emulsified and dispersed hydrophobic liquid,
A hydrophilic colloid or a surfactant for emulsification is used.
L-ri. Either one of both 4 or both can be used in combination.

Hydrophilic protective colloids preferably used in the present invention include, for example, graft polymers of ordinary gelatin and other pot molecules, proteins such as albumin and casein; Cellulose, such as Nisdell and others, f
Sugar-induced substances such as lugic acid powder, mi powder conductor, etc.: polyvinyl alcohol, polyvinyl alcohol partial acetal, poly-N-vinylpyrrolito, polyacrylic acid, halimethacrylate, polyacrylamide, polyhinyl t
Single or co-X such as Dal/Dal, polyvinylpyrazole
It is possible to use multiple synthetic hydrophilic polymer molecules such as conjugates.

As the usual gelatin, acid-treated gelatin may be used, as well as gelatin hydrolyzed and enzymatically decomposed gelatin.

The emulsifying surfactant used herein can be superimposed on a hydrophilic liquid or a hydrophobic liquid.

As the surfactant used in the present invention, any commonly known surfactant may be used.

For example, saponin (steroid A), 7-carbon oxides (e.g., polyethylene glycol, polyethylene glycol/polypropylene glycol condensation, polyethylene glycol alkyl, alkylaryl ether, polyethylene glycol ester,
Polyetere/Gly” - rusorbitan esdels, polyalkylene dalicol alkylamines or amides, silico-70bo! J ethylene oxide adduct field), G I
J Sodol #s4 bodies (e.g. alkenyl succinate #, polyglyceride, alkylphenol polyglypeptide)
, fatty esters of polyhydric alcohols, alkyl esters of polyhydric alcohols, nonionic active agents such as urethanes 2 or NiAls; triterpenoid saponins, alkylcarphonic acid groups, alkylsulfones @ salts,
Alkylbenzene sulfonate, alkylnaphthalene/
Sulfoff #xEM, Furkyl sulfate ester JL'f
/I/1,000/#Esters, N-acyl-N-/Rukiltaurine, Sulfosuccinic acid esters, Sur1,!
Anion world containing 11 carboxy groups, sulfo groups, phosphor groups, acetic acid esters, phosphoric acid esters, etc. I11 [I activator; can be used.

Water molecules can be removed from the capsule toner dispersion prepared according to the present invention by using a known drying method such as silk spray drying, adhesive drying, etc. to remove the decay of the capsule toner.

The outer wall of force 1 cell toner according to the invention 'P VC,vl
An appropriate amount of a charge control agent containing metal-containing h4, which is used in toners manufactured by Takumai Co., Ltd., may be added in an appropriate amount. This charge control agent can also be used in combination with a toner.

A fluidizing agent may be added to the microcapsule toner of the present invention when adding a hydrophobic compound.

Next, the effects of the present invention will be described.

When the capsule dispersion liquid is spray-dried, it becomes a smooth capsule toner with less mother powder. When a powder is obtained, the properties of the powder are improved by adding only 1 m of a dynamic agent such as hydrophobic silica to the doped powder! nru.

As mentioned above, by using boria-bard resin in the outer capsule of the capsule toner, when drying the water, the surface
This is thought to be due to the fact that the moisture in the powder was easier to remove, and the powder properties were improved because the fluidizing agent was layered on the surface of the capsule particles. Father, the above capsule toner did not suffer from force 5-a knocking when stored in a hot pot temperature F (for example, 100 C710 qb 14/day).

The present invention will be described in detail below using Examples, but these are not intended to limit the present invention.

Example 1 1 part of carphone blank (Mitsubishi carphone blank MA-/υθ, manufactured by San-ai Kasei Kou II) was dispersed in ≠6 parts of old castor using a mortar. (7th grade) On the other hand, 25 parts of Desmodur L (manufactured by Bayer, an adduct of toluylene diisocyanate and hexanetriol) and terenothalic acid loridoco S were dissolved in 1 part of ethyl acetate and 2j parts of ethyl acetate, and do.

Next, 200 parts of io-'s Arahya gum water bath was cooled in advance, and a mixed vIJ of the second-order body and second-order number body was emulsified and dispersed therein to give an average size of 10 μm.

Add 10e4 water #4 of hexamethylene/diami to this emulsion.
Add 1&Os and stir for 30 minutes, then adjust the pH.

10 charcoal-noda water bath slurry was added to the mixture so that the amount of

Thereafter, the reaction was carried out at 70"C1 with heating and stirring F for one hour.

The capsule portion w1 thus obtained. Therefore, after washing three times with water using the centrifugation method and drying with a spray dryer manufactured by Daiwa Scientific Research Institute, the capsule toner powder was made into Samurai Takko α [f, which has powder characteristics that are satisfactory for light spectroscopy, but in order to improve it further. , 0 hydrophobic silica (Aerosil-8-Ta7, manufactured by Nippon Aerosil ■)
．． When zw/w% was added, a capsule toner with excellent fluidity was obtained.

Also, put the capsule toner powder in a plastic container.
Although it was stored under oCl and RH for 1 day, it was found that no blocking occurred at all.

Example 2 21 parts of ethyl acetate, 525 parts of desmodur, 2 parts of terephthalic acid chloride and adecacadrol (manufactured by Dendenka Co., Ltd.)
A primary liquid was obtained by dissolving 7 parts of ethylenediamide/propylene oxide adduct), which was then encapsulated in the same manner as in Example 1, washed with water, and spray-dried to obtain a capsule toner powder.

Similar to the capsule toner obtained in Example 1, a capsule toner with extremely good fluidity was obtained.

Comparative example Castor oil ← 6 parts carbon black (same as Example 1)
Parts were dispersed using a mortar. (Primary liquid). On the other hand, 121 parts of desmodule was dissolved in λj parts of ethyl acetate,
As a secondary liquid, long lθ whisper of gum arabic water bath standard 20
0 Part Kaneko is cooled, and a mixture of the primary liquid and secondary liquid is emulsified and dispersed therein, and the level of the oil droplets is set to /θμ. This dispersion was stirred at 70°C for 1 hour. After washing the thus prepared capsule dispersion with water in the same manner as in the experiment,
IJIll dry and samurai capsule toner.

The powder properties of this capsule toner are extremely poor, and a fluidizing agent (hydrophobic 7-core Erosil R-Ta 7-co) is used for Jw/w.
Yukita Shi'C also appeared as a mother, and was slightly satisfied.

Example 1 and Example 2t-Comparison with Comparative Example By softening the polyurea wall or polyurethane wall, polyamide wood 8
It was found that a capsule toner with extremely good powder characteristics could be obtained by adding ft wax to form a 'C1λ thick wall.

Patent Applicant - Shiyo^ Neulum Co., Ltd. - L#, Sales 7 Minamishosho January 17, 1980 Director of the Patent Office Mr. Kazuo Wakasugi 1, Indication of the case 1981 Patent Application No. 165262 2゜ Title of the invention Capsule Toner 3, relationship with the amended person case Patent applicant address 210 Nakanuma, Minamiashigara City, Kanagawa Prefecture Name (52
0) Fuji Photo Film Co., Ltd. Representative Ohnishi
Award 4, Agent address: 8th floor, Tsuya Yotsuya Building, 2-14 Yotsuya, Shinjuku-ku, Tokyo) 5゜Date of amendment order (voluntary) 6゜Number of inventions increased by amendment (none) 7
, Claims column and Detailed Description of the Invention column of the specification subject to amendment 8゜Contents of amendment■. The scope of claims is amended as shown in the attached sheet.

■0 The detailed description of the invention is revised as follows.

(1) On page 6 of the specification, lines 4 to 6, amend ``f, the wall has m- (omitted)-1'' to 1, that the wall is made of polyurea resin and/or polyurethane resin, and polyamide resin. .

(2) γ-polyamide resin wall 11 (page 7 lines 2-5 of the specification)
(omitted) -1 is obtained. When j and r mainly produce polyamide resins, and the dispersion is heated to a temperature in the range of 40 to 90°C, mainly polyurea resins are produced, thereby obtaining the desired capsules having walls made of polyurea resin and polyamide resin. Correct to j.

(3) t-polyurethane resin-1 (page 7 lines 7-9 of the specification)
(omitted) - one capsule is obtained. Capsules are obtained whose walls also contain a polyurethane resin. Correct to A.

(4) In page 7, line 11 of the specification, t', "East wall capsule" is corrected to "1 capsule".

(5) Specification 11Ji (1 polyurethane resin or -1 (omitted) -1 in lines 13 to 17) and the capsule wall is formed by covering Ji with a wall made of 1 polyurea resin and/or polyurethane resin and polyamide resin. The polyamide resin contained in this wall has an important function and is corrected to J.

(6) In line 12, line 4 of the specification, ``f resin wall'' is corrected to ``wall containing resin 1''.

(7) "/23% wall capsule" in line 2 on page 14 of the specification is corrected to "1 capsule".

(8) The polyurea resin-1 (omitted)-1 capsule toner described in detail in 1 or more on page 25, line 6 of the specification is a polyurea resin and/or polyurethane resin described in 1 or more in detail, and a polyamide resin. The capsule toner of the present invention having a wall consisting of J.

(9) Jt-
Corrected to J by incorporating polyamide resin into the capsule wall of the 1' capsule toner.

(10) From the 3rd line from the bottom of page 27 of the specification to the bottom of page 28 2
Claims (after amendment) characterized in that Comparative Example 1 in line 1 (omitted) is tj A capsule comprising a core material containing a display recording material and a wall covering the core material A capsule toner characterized by the following.

Claims (1)

[Claims] In a capsule toner composed of a core material containing a display recording material and a wall containing one core #IB'3i, one core is a double wall made of polyurea resin and polyamide resin, or
A capsule toner characterized by having a dual content of polyurethane resin and polyamide resin.