JPS61162059A - Liquid developer for electrostatic charge image - Google Patents

Abstract

PURPOSE:To form a liquid developer which decreases the flow of an image and the double images generated around a line image or character image by incorporating a specific metallic salt and copolymer resin into said developer. CONSTITUTION:The metallic salt of the compd. expressed by formula 1 or 2 and the copolymer resin expressed by formula 3 are used in combination. The total of the carbon atoms of R<1> and R<2> is preferably in a 8-36 range and either of R<1> and R<2> is preferably an acyl group. The metallic salt of the metal selected from nickel, titanium, zirconium and cobalt is more particularly preferable as the metallic salt. The copolymer of an acrylic acid or methacrylic acid and lauryl methacrylate is more particularly preferable as the copolymer resin and is exemplified by the copolymer having 0.05:0.95-0.4:0.6 copolymn. molar ratio. The copolymer having 1,000-100,000 number average mol.wt. is more preferable.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to charge control agents and additives for liquid developers used for developing electrostatic images.

``Prior art'' Liquid developers conventionally used for this purpose have high electrical resistance (
A coloring agent represented by carbon black, nigrosine, etc. is adsorbed or coated in a carrier liquid having a resistance of 1 to 15Ω*an), and adsorbs or coats the colorant to adjust the charge of toner particles and promote dispersion, and also improves the image quality after development. It is prepared by dispersing a toner particle forming resin that contributes to improved fixing performance, a substance that dissolves or swells in a carrier liquid and increases the dispersion stability of toner particles, and a substance that strengthens and stabilizes the charge of toner particles. .

Since the charge of toner particles has a large effect on the image after processing, a great deal of effort has been made to stably adjust it, but there are currently two main methods known. . The first method is to coat the surface of toner particles with a substance that can ionize or adsorb ions. Substances used for this purpose include fats and oils such as linseed oil and soybean oil, alkyd resins, Polymer, Aromatic polycarboxylic acid shown in Tokko Shoj / + j, f 4cu, Tokko Sho! Aqueous acidic group-containing water-soluble dyes shown in 6-/λr6 and oxidative condensates of aromatic polyamines shown in JP-A-2006-2062 are known. In this method, since the toner particles themselves have polar groups, it is possible to reduce the amount of ions contained in the carrier liquid, and it is possible to create a solid developer with excellent development characteristics, but it is difficult to finely adjust the amount of charge. There are problems in that it is difficult to use, and depending on the material used, the amount of charge deteriorates significantly over time.In addition, particles containing many polar groups are generally difficult to disperse due to their large cohesive force;
Special measures are required as shown in Figure 9.

The second method is to coexist a substance that is dissolved in the carrier liquid and can exchange toner particles with toner particles.
Metal soaps such as cobalt naphthenate, nickel naphthenate, and cobalt coethylhexanoate, sulfonic acid metal salts such as calcium dodecylbenzenesulfone, petroleum-based sulfonic acid metal salts, and metal salts of sulfosuccinates, lecithin, and polyvinylpyrrolidone resins. , polyamide resin, Tokukosho! Sulfonic acid-containing resins described in t-2≠2μμ, hydroxybenzoic acid derivatives described in Japanese Patent Application Laid-Open No. 1987/1973, and the like are known.

The second method is widely used because it is easy to add a charge control substance and allows fine adjustment of the amount of charge.
Generally, additives tend to lower the electrical resistance of the developer because they add substances that are easily ionized. As a result, the optimum amount of additive is severely limited, and if it exceeds it, adverse effects such as blurred images and decreased copy density may occur. However, when a large number of copies are made in succession, the so-called "developer" phenomenon occurs due to the accumulation of the charge control agent, which has the drawback of reducing image density and resolution. In addition, images sometimes formed around characters and line drawings, resulting in double images.Also, after a while after preparing the developer, the magnitude of the charge changes and the image density changes. Sedimentation of the toner increased, and some substances even deteriorated during storage due to oxidation and lost their charge control function.

``Problems to be Solved by the Invention'' A first object of the present invention is to provide a liquid developer that causes fewer image deletions and double images that occur around line drawings and character images.

A second object of the present invention is to provide a liquid developer with good stability over time.

A third object of the present invention is to provide a charge control substance having a wide allowable addition range.

A fourth object of the present invention is to provide a charge control substance that does not impair the dispersion stability and fixing properties of toner.

"Friendly Means to Solve Problems" The present inventors focused on the second method and developed an ionic substance that does not undergo undesirable dissociation in a carrier liquid and has little change over time, and has solved the above problems. We improved this and found a combination of additives.

That is, as a result of intensive research, the present inventors found the following general formula [11
or a metal salt of a compound represented by u(It) and [IIl
It has been discovered that by using a combination of copolymer resins represented by 1, a liquid developer for electrostatic images that eliminates the above-mentioned drawbacks can be obtained.

In the formula, R'', R2 is a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, a substituted alkyl group (substituents include a dialkylamino group, an alkyloxy group, an alkylthio group),
Aryl group, substituted aryl group having a carbon number of 6 to 2μ (substituents include dialkylamino group, alkyloxy group,
alkylthio group, chloro group, bromo group, cyano group, nitro group, hydroxyl group), aralyl group, acyl group having 1 to 2 carbon atoms, alkylsulfonyl group, or carbon number t
Indicates an arylsulfonyl group of up to 2 characters. R1R2U
They may be the same or different, and R1-R2
may form a ring, but it cannot become a hydrogen atom at the same time.

A represents an alkylene group or substituted alkylene group having up to 10 carbon atoms.

R3 and R' are hydrogen atoms or methyl groups, and R5 is the number of carbon atoms ≠ ~
Indicates an alkyl group up to λ2 or a substituted alkyl group (carbon number/%/alkyl group up to 17 as a substituent).

The molar ratio of X and y is 0.0/:0.2~o, r:o
, 2.

The copolymer resin of CIII) does not impart any charge alone, but when used in combination with the metal salt of the compound CI) or the compound (If), it increases the charge of the toner particles and the undesirable ionic components. I was able to make it bigger without any problems. Although its mechanism of action is unknown, it is thought that it promotes the adsorption of [I] or H (II) anions to toner particles by some action, and further stabilizes the adsorption. In other words, the copolymer (II[) is a charge reinforcing agent that effectively imparts the charge caused by [I] or (II) to toner particles. It is thought that by increasing and stabilizing the charge, image blurring and double images are reduced, and stability over time is improved.

In the compound of general formula [I] or [■] used in the present invention, it is preferable that the total number of carbon atoms of R and R shown in the general formula is within the range of r to 3, and
It is preferable that either one of them is an acyl group. Examples of metal salts include calcium, barium, manganese, copper, lithium, titanium, zinc, lead, zirconium, cobalt, nickel, aluminum, cerium, lanthanum, chromium,
Metal salts of metals selected from strontium, vanadium, tin, magnesium, iron, and cadmium are preferred. Particularly preferred are metal salts of metals selected from nickel, titanium, zirconium, and cobalt. As the titanium salt, it is preferable to use a reaction mixture obtained by reacting the compound of general formula (11) with an organic titanium compound. As an organic titanium compound, the following general formula [
■] Compounds can be mentioned.

RnTiX(4-11) CF/
In the formula 'E', R' represents an alkyl group or an aralkyl group, ``R'' represents an aryl group, X represents a norogen atom or t represents an alkoxy group, and n represents an integer of θ to 3.

When n is Q, at least one X is an alkoxy group.

Specific examples include titanium tetraisopropoxide, titanium tetrabutoxide, titanium tetrastearyloxide, diisopropoxytitanium dichloride, triisopropoxytitanium monochloride, diethyltitanium diisopropoxide, diethyltitanium dichloride, titanium diiso dioleate. Examples include propoxide.

Among these compounds, alkoxides are preferred in terms of ease of handling, and titanium tetraisopropoxide is most preferred.

These metal salts are special! ! It can be synthesized by the method described in Cocoa No. -/Cola Cocoa and Japanese Patent Application No. 17 Kotayo No. 5.

Specific examples of metal salts of the compound of general formula (11 or (It)) will be given, but the present invention is not limited thereto.

Compound-7 Compound-2 Compound-μ Compound-t Compound-t 2H5 Compound-7 Various copolymer resins can be used as the copolymer resin represented by the general formula [1[[], but particularly preferred are acrylic resins. A copolymer of acid or methacrylic acid and lauryl methacrylate, the copolymerization molar ratio is 0, Or: 0. Riz ~
o, ta: o, Anomonoka can be mentioned.

The number average molecular weight of the copolymer is preferably from 10 DD to 100,000.

Examples include the following, but the present invention is not limited thereto.

Copolymer-l HCH I I 3 x/y = 0, 210, copolymer-2 CHCH x/y = 0.210, r copolymer-3 x/y = 0-CoA, r copolymer Coalescence - μ Copolymer - H3H As the coloring agent used in the present invention, pigments and dyes, or both, which have been conventionally used in liquid developers and are well known, can be used. For example, Hanzaiero (C0
Engineering, 1ltlrO), Benzidine Yellow G (C,I.

210riO), benzidine orange (C,I,,2//
10), First Red (C, Engineering, !70rj), Brilliant Carmi 73B (C, ■, t6otr-Lak
e'), 7 talocyanine blue (C, 1,7≠t 6o
), Lid 72yg IJ-7 (C, i, 74c color 0), Victoria Blue (C, 1, g2t!-Lak
e), Spirit Black (C, 1, j (744/l)
, Oil Blue (C, 1, 7 ≠ 310), Alkaline Blue (C, 1, ≠ 277 OA), Fast Scarlet ((::, ■, /, 2J/j), Rhodamine 6B
(C, 1, ≠rito), First Sky Blue (c
, 工, 'ya, 2oo-Lake>, Nigrosine CC,
, 1,5oatz), carbon black, etc. Surface-treated pigments such as carbon black dyed with nigrosine, grafted carbon obtained by graft polymerization with polymers, etc. can also be used. Others include Tokuko Shoyo 7-19.
Bisarylazo derivatives of core 3-naphthalenediol described in Muff, formazan dyeing pigments described in Tokko Sho μ7-μ≠≠O, Tokko Shoj/-/μ37
Lake pigments disclosed in Japanese Patent Application Publication No. 2003-111011, Japanese Patent Publication No. 6-μr. 1, and No. 1, No. 1, No. 2003-111112 are also useful.

As the carrier liquid used in the present invention, many types of known carrier liquids can be used, but because of the need to avoid damaging the electrostatic charge during the development operation, carrier liquids with an electrical resistance of IQ10.(1) or more and a dielectric constant of 3 are used. It is desirable to choose the following non-aqueous solvents. For example, aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons, polysiloxanes, etc. can be used, but generally, from the viewpoint of volatility, safety, toxicity, odor, etc. Grafine petroleum solvents are preferred. As an Inno-e rough-in petroleum solvent, Isopar G manufactured by Esso Co., Ltd.
1 Isopar H1 Aino, I! ++ L, *Aitsunogu-, etc. can be mentioned, such as Sherzol 71 manufactured by Ishikoru Oil Company.

The developer of the present invention can contain a resin that is insoluble or swellable in the carrier liquid as a toner particle-forming resin. These resins have the effect of being resistant to adhesion to the colorant or promoting the dispersion of the colorant by releasing a coating film around it.
It has the effect of improving the fixing properties of the developer by acting as a binder for the cleansing agent after the development process.

As the resin, many types of known resins can be used, including rubbers such as butadiene rubber, styrene-butadiene rubber, cyclized rubber, and natural rubber, styrene resins,
Synthetic resins such as vinyltoluene resin, acrylic resin, methacrylic resin, polyester resin, polycarbonates, polyvinyl acetate, rosin resin, hydrogenated rosin resin, alkyd containing modified alkyd such as linseed oil modified alkyd Examples include natural resins such as resins and polyterpenes. Other phenolic resins including modified phenolic resins such as phenol-formalin resins, natural resin-modified maleic acid resins, pentaerythritol phthalate, chroman-indene resins, ester gum resins,
Vegetable oil polyamides and the like are also useful.

Known dispersants can be used to enhance the dispersibility of the developer of the present invention. The dispersant is a resin that swells when dissolved in the high electrical resistance non-aqueous solvent used in the developer of the present invention and improves the dispersibility of the toner, such as styrene-butadiene rubber, vinyltoluene-butadiene rubber, etc. , synthetic rubbers such as phthadiene-isoprene, polymers of acrylic monomers with long chain alkyl groups such as coethylhexyl methacrylate, lauryl methacrylate, stearyl methacrylate, lauryl acrylate, octyl acrylate, or other polymerizable materials thereof. Copolymers with monomers (for example, styrene-lauryl methacrylate copolymer, vinyl toluene-lauryl methacrylate copolymer, etc.), polyolefins such as polyethylene, polyethylene, etc. can be used. Other Tokukai Showa 3tA-j/
Also useful are polymers containing ≠<> ammonium salt monomers as disclosed in US Pat.

Although not necessarily required, a known charge control agent can be used in combination with the developer of the present invention. Reasonable examples include metal salts of fatty acids such as naphthenic acid, octenoic acid, oleic acid, stearic acid, isostearic acid or lauric acid, metal salts of sulfoconophosphate esters, and 1f.
IR-116, JP-A-32-37≠3, JP-A-Sho! Oil-soluble sulfonic acid metal salts shown in Co., Ltd. 370μri etc.
Tokuko Sho ≠ Yoichi 2! Metal salts of phosphoric acid esters shown in RI≠, metal salts of abietic acid or hydrogenated abietic acid shown in JP Sho ≠ I-2!6A &, JP Sho J'j-26! Alkylbenzenesulfonic acid Ca salts, JP-A Shoj2-107r37, JP-A Shoj
2-Jr937, Japanese Patent Publication No. 7-ta Q Otsu IA3, Japanese Patent Publication No. 5
7-/JP7jJ etc., metal salts of aromatic carzenic acid or sulfonic acid, nonionic surfactants such as polyoxyethylated alkylamines, lecithin,
Oils and fats such as linseed oil, polyvinylpyrrolidone, organic acid esters of polyhydric alcohols, oil-soluble phenolic resins shown in JP-B No. 6-3774, JP-A No. 7-2103
There are phosphoric acid ester surfactants shown in 1Aj, sulfone resins shown in Tokko Shoj[-2μrigg, etc.

The developer of the present invention can be produced by a conventionally known method. An example of its manufacturability is shown below.

First, a colorant consisting of a pigment or a dye, or both, and the above-mentioned resin for forming toner particles are dispersed and mixed in a parent solvent of the resin using a dispersing machine such as a Seel Mill, a Roll Mill, or an India shaker. , the solvent is removed by heating or the like to obtain a mixture.

Alternatively, the mixture is poured into a liquid that does not dissolve the resin and reprecipitated to obtain a mixture.

Alternatively, a mixture is obtained by kneading the colorant and the resin using a mixing machine such as a kneader-three roll mill while heating the colorant to a temperature higher than the melting point of the resin, and cooling the kneader.

The thus obtained mixture is dry-pulverized or wet-pulverized together with a dispersant to obtain a toner concentrate.

The solvent during wet grinding may be the carrier liquid itself, and a parent solvent of the above resin such as toluene or acetone is added to it.
It may be added by 20% by weight.

The toner concentrate thus obtained is dispersed in a non-aqueous solvent solution containing the charge control agent of the present invention to obtain a liquid developer for electrostatic images. The concentration of toner particles in the developer is not particularly limited, but is usually 0.0/1 to carrier liquid/1.
17,1009. Preferably it is o, ip~1077. Note that the charge control agent of the present invention may be added by an addition method other than the above-mentioned method. That is, it may be added during cross-mixing or wet pulverization, or they may be used in combination. The concentration of the charge control agent of the present invention is determined as developer/j in the final usage form.
It is preferable to adjust o, ooip, and top to include l. More preferably, it is in the range of 00otp to 1I. ttGeneral formula of the present invention [I'3 or (II)
The metal salts of the compounds shown can be used alone or in combination.

The copolymer resin represented by the general formula C1) can be added in the same manner as the charge control agent.

If it is insoluble in the carrier liquid, it can be dissolved in toluene or the like and then added under a tube.

The concentration of the vinegar additive is o, oo relative to the developer lt.

It is desirable to contain 1 to 3 g.

A more preferable range is FiO100/-If.

The developer of the present invention can be used for photoreceptors using well-known organic photoconductors or inorganic photoconductors. The developer of the present invention can also be used to develop electrostatic latent effects produced by means other than photosensitivity, such as by charging a dielectric material with a charging needle.

Organic photoconductors include a wide variety of well-known organic photoconductors. Specific examplesResearchDisclosure
There are substances described in eJ magazine 41109Jr (paper entitled "Electrophotographic elements, materials and processes", page 61 onwards, issue 733jμ).

For example, A: (poly-N
- Electrophotographic photoreceptor consisting of vinylcarbazole and λ, μ, 7-1j nitrofluorene-teron (U.S. Pat. No. 3.≠r≠, 23), sensitized with poly-N-vinylcarbazole all-pyrylium salt dye Friends (Tokuko Akihiro r-2
14j1), electrophotographic photoreceptor whose main component is an organic pigment (
JP-A Akihirota 37Jμ3), an electrophotographic photoreceptor mainly composed of a eutectic complex consisting of a dye and a resin (JP-A Akihirota 37Jμ3);
.

73j) etc.

The m-less conductor used in the present invention is [Elect
rophotographyJ R@M.

5chaffert, Focal Press (L
ond+on) Published (797j) 26Q pages ~ 3
Various inorganic compounds disclosed in 7tI-page etc. are representative. Specific examples include zinc oxide, zinc sulfide, cadmium sulfide, selenium, selenium-tellurium alloy, selenium-arsenic alloy, selenium-tellurium-arsenic alloy, and the like.

Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.

Example-1 The above composition liquid was dispersed in a ball mill overnight, the mixture was poured into Aitsuno-H (manufactured by Etsuso Corporation), and the precipitate was separated daily. Try this! , 2 parts by weight of 1Oj (Asahi Kasei, styrene-butadiene copolymer) was added to isotR-H.
It was dissolved in 0 parts by weight of IA, mixed with t solution, and dispersed in a ball mill for 6 days and nights to obtain a toner concentrate. The average particle diameter was measured with a Nanosizer (manufactured by Coulter) and was found to be 0.3 jμ.

Next, dilute it to the following concentration and use it as a working solution.ft-.

I made an arrow developer for comparison.

Developer B: Developer C, obtained by removing copolymer-l from developer A; Developer C, which was obtained by removing copolymer-l from developer A. Developers A and B were negatively charged, but developer C was positively charged. Didn't give sex.

The amount of charge was measured using the device described in JP-A No. 17-111174, and the results were as follows: Developer A Developer B Developer CJ4'mv/
The value was sec JOmv7sec Jmv/sec.

Next, sol (PVC
z) 700 parts by weight, vinylidene chloride-acrylonitrile copolymer! Parts by weight, styrene-butadiene copolymer 3
Parts by weight, t-di-t-butyl-μ-[≠-(N, N
-dichloroethylamino)styryl]thiavirylicum tetrafluoroborate.

A solution dissolved in Kodichloroethane 2000 rtd was prepared to a thickness of 100 nm with an In2O3 vapor deposited layer of t on nm thickness.
After coating on μm polyethylene terephthalate (PET) film (In203 conductive PET film), drying and removing the solvent, thickness! A photoconductive layer with a thickness of μm is provided, an electrophotographic film is prepared, the surface of the film is charged, and an image is exposed through a positive original, creating an electrostatic latent image.

When this electrostatic latent image was developed using the above-mentioned developer, developer C was completely out of the question since image deletion and double images were observed, and only an extremely unclear image was obtained.

Developers A and B gave clear images with almost no image deletion and good halftone reproducibility, but developer B produced double images. Furthermore, after t of forced aging for j00C-/week, image smearing and double images increased with developer B, whereas with developer A, almost no change in image quality was observed, and after t of forced aging, the amount of charge increased. was the following value.

Developer A Developer B Developer CJGmv/s
ec /rmv/sec jmv/secThe charge amount decreased significantly in developer B which did not contain copolymer-1. The effect of the combination of Compound-1 and Copolymer-I is clearly visible.

Example 2 A toner concentrated solution having the following composition was obtained in the same manner as in Example 1.

Next, the above toner concentrated solution was diluted to the following concentration to prepare a developer.

For comparison purposes, the following developers were prepared by excluding Copolymer-2. (Developer E) Developed in the same manner as in Example 1. However, a good image with no image bleeding or double lines was obtained for both mirror image agents D and E. After 90 rooms of forced aging for a week, developer E Then double image,
In contrast, the developer of the present invention gives good images without image bleeding or double images. was distilled off to obtain a lump consisting of pigment and resin.

Next, crush the kofi and then Norprene ko O! , 7 parts by weight were dissolved in true parts of Ainno Hioo and mixed with a diluted solution,
The toner was then dispersed day and night in a ball mill to form a concentrated toner solution. Prepare the developer to have the following concentration.

When the electrophotographic photosensitive film shown in Example 1 was developed in the same manner using this developer, a clear and pure black image was obtained. As a result of the development process, no deterioration in image quality such as image smearing, dissolving power, or tone reproducibility was observed, and a small amount of toner sedimented and could be easily redispersed. It turns out that it has good aging properties as well.

On the other hand, in the developer that does not contain copolymer-3, toner sedimentation is significant, double images and image deletion are increased, and the performance is deteriorated compared to the developer of the present invention.

Example 4 The above composition was mixed with a V-type heating material, then melted and mixed at 1140°C using a three-roll mill. After kneading, the mixture was coarsely ground with a hammer mill, and then finely ground with a pin mill to obtain a powder.

Next, the composition was dispersed in a paint shaker for 2 hours to prepare a toner concentrate. Toner particle size is O0 with nano sizer! μ and t0 developer was developed in the same manner as in Example 1 using this developer, and a good image with little image bleeding was obtained1.For comparison, a toner containing no copolymer-≠ However, when fresh images were created, images with less image blurring were similarly obtained. On the other hand, in toners that do not contain the copolymer, the amount of charge decreases (from J/my/sea to 22 mv/sec) when subjected to forced aging for JO'c/week, resulting in image blurring and double images. A friend who gives many images. On the other hand, this toner shows almost the same amount of charge as fresh (33 mv/
sec to jjmv/5ec) No change in image quality was observed.

Example 5 The developer of Example 4 was developed using a slide creator sold by Matsushita Electric Industrial Co., Ltd., Panacopy KV-3゜00 (the film was) ξNacopy Film KV-//FM), and the results were clear. gave an image. As in Example 4, the developer of the present invention and the developer of the present invention having exactly the same composition except that the copolymer -≠ was removed were subjected to forced aging for 7 tl & When developing with a developer that does not contain copolymer-μ, image fading occurs, but with the developer of the present invention, clear images with almost no change were obtained compared to those that were not subjected to forced aging.

Patent applicant Fuji Photo Film Co., Ltd. Procedural amendment (side 1, case description 1985 patent application core 1/
No. 2, Title of the invention Liquid developer for electrostatic images 3, Relationship with the case of the person making the amendment Patent applicant office 210 Nakanuma, Minamiashigara City, Kanagawa Prefecture Name (520) Fuji Photo Film Co., Ltd. Telephone (406) 2537 Table Date of amendment order
Subject of amendment: Specification & Contents of amendment Submit an engraving of the specification (with no changes to the content).

Procedural amendment dated June 13, 1965 1, Indication of case 1965 patent application No. 271/2
, Title of the invention: Liquid developer for electrostatic images 3, Relationship with the person making the amendment Patent applicant: 210 Nakanuma, Minamiashigara City, Kanagawa Prefecture Name (520) Fuji Photo Film Co., Ltd. 4: Subject of the amendment: The "Scope of Claims" column, the "Detailed Description of the Invention" column, and 5. The statement in the "Claims" section of the description of the contents of the amendment shall be amended in a separate sheet.

The description in the "Detailed Description of the Invention" section of the specification is amended as follows.

(1) 3rd line of page 1 "double line" , “double thick and correct it.

Attached Claims (11) Containing at least one metal salt of a compound represented by the following general formula [I] or (III), and further comprising a copolymer resin represented by the general formula (m). Liquid developer for electrostatic images.

In the formula, R1 and R2 are a hydrogen atom, an alkyl group having up to 7 carbon atoms, a substituted alkyl group (& substituents include a dialkylamino group, an alkyloxy7 group, and an alkylthio group), and a carbon number of 6 to λμ. Aryl group, substituted aryl group (substituents include dialkylamino group, alkyloxy group, alkylthio group, chloro group, bromine group, cyano group, nitro group, hydroxyl group), aralkyl group, carbon number 1 to λλ
Acyl group, alkylsulfonyl group or carbon number 6 to
represents an ali, -lsulfonyl group up to 4A. R1, R
2 may be the same or different respectively・R-R
`` may form a ring, but it cannot become a hydrogen atom at the same time.

A represents an alkylene group or substituted alkylene group having up to /-/Q carbon atoms.

R3R4 is a hydrogen atom or a methyl group, RFi carbon number is ~
Up to 2 alkyl groups or substituted alkyl groups (the number of carbon atoms as substituents) to 10j alkyl groups).

The molar ratio of X and y is 0.0/:0. RiP~o.

t:0. It is λ.

Claims (1)

[Claims] (1) An electrostatic charge image product characterized by containing at least one metal salt of a compound represented by the following general formula [I] or [II], and further containing a copolymer resin represented by the general formula [III] liquid developer. ▲There are mathematical formulas, chemical formulas, tables, etc.▼[I] ▲There are mathematical formulas, chemical formulas, tables, etc.▼[II] ▲There are mathematical formulas, chemical formulas, tables, etc.▼[III] In the formula, R^1, R^2 are Hydrogen atom, alkyl group having 1 to 22 carbon atoms, substituted alkyl group (substituents include dialkylamino group, alkyloxy group, alkylthio group)
, an aryl group having 6 to 26 carbon atoms, a substituted aryl group (
Substituents include dialkylamino group, alkyloxy group, alkylthio group, chloro group, bromo group, cyano group, nitro group, hydroxyl group), aralkyl group, and carbon number 1 to
It represents an acyl group of up to 22, an alkylsulfonyl group or an arylsulfonyl group having from 6 to 24 carbon atoms. R^1,
R^2 may be the same or different, and R
^1-R^2 may form a ring, but it cannot become a hydrogen atom at the same time. A represents an alkylene group or substituted alkylene group having 1 to 10 carbon atoms. R^3R^4 represents a hydrogen atom or a methyl group, and R^5 represents an alkyl group having 4 to 22 carbon atoms or a substituted alkyl group (an alkyl group having 1 to 10 carbon atoms as a substituent). The molar ratio of x and y is 0.01:0.99 to 0.8:0
．． It is 2.