JP2001042571A - Full color toner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the full color toner superior in positive chargeability, and small in photoreceptor fog even in the case of using the toner for a nonmagnetic unicomponent type developing device and sufficient in offset resistance and color reproduction performance. SOLUTION: This full color toner contains a charge controlling copolymer resin having structural units represented by formulae I to III, in an amount of 60 to 97 weight %, 1 to 33 weight %, and 2 to 35 weight % in this order and formula III having quarternary ammonium salt groups, a releasing agent containing at least one kind of wax selected from a group comprising polyethylene waxes and ester waxes in an amount of 0.1 to 10 weight % of a binder resin, and the toner has an acid value of <=5 mgKOH/g and a softening point of 95 deg.C to 125 deg.C and a glass transition point of 52 deg.C to 75 deg.C. In formulae I-III, each of R1 and R2 and R4 is an H atom or a methyl group; R3 is a 1 to 6 C alkyl group; each of R5 to R7 is a 1 to 4 C alkyl group; each of R8 and R9 is an H atom or a 1 to 4 C alkyl or such alkoxy group.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a full-color toner used for developing an electrostatic latent image formed in electrophotography, electrostatic recording, electrostatic printing, and the like.

[0002]

2. Description of the Related Art In full-color printers, copiers and the like,
Negatively chargeable toners are mainly used. In recent years, positively chargeable toners, especially for reversal developing devices, have been receiving attention. Nigrosine dyes, compounds such as triphenylmethane, and quaternary ammonium salts are known as charge control agents for imparting positive charge to the toner, but the former is colored and difficult to use for full-color toners, and the latter is charged. Because of its low performance, it is difficult to obtain a sufficient charge amount by using the same alone.
Further, a toner containing a quaternary ammonium base-containing copolymer as a positively chargeable charge control agent is also known (JP-A-63-60458, JP-A-3-1754).
No. 56), the styrene / dimethylaminoethyl methacrylate copolymers shown in the examples are not sufficiently compatible with polyesters preferably used for full-color toners, and high transparency cannot be obtained. Further, it is not easy to obtain high positive chargeability because these polyesters have a carboxylic acid group. In particular, in the non-magnetic one-component developing method in which the charge is applied to the toner only when the toner passes through the charging blade, the toner is required to have better chargeability.

On the other hand, if silicone oil is applied on a heat roll in order to prevent the offset phenomenon which is likely to occur in the heat roll fixing method, disadvantages such as an increase in size of the apparatus and difficulty in overwriting are caused. Therefore, many toners containing a wax as a release agent have been reported. However, addition of the wax tends to cause deterioration in color reproducibility, light transmittance, and the like, and the addition of the wax to a full-color toner is limited.

[0004]

SUMMARY OF THE INVENTION The present invention has excellent positive chargeability and has excellent image quality without fogging of a photoreceptor even when used in a non-magnetic one-component developing apparatus. It is an object of the present invention to provide a full-color toner having sufficient offset resistance, color reproducibility and light transmittance.

[0005]

The present invention is a full-color toner comprising a binder resin containing a polyester, a charge control resin and a release agent, wherein the charge control resin has the formula (I):

[0006]

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(Wherein R ¹ represents a hydrogen atom or a methyl group) in an amount of from 60 to 97% by weight of a structural unit represented by the formula (I
I):

[0008]

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Wherein R ² is a hydrogen atom or a methyl group;
³ represents an alkyl group having 1 to 6 carbon atoms), 1 to 33% by weight of a structural unit represented by the formula (III):

[0010]

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Wherein R ⁴ is a hydrogen atom or a methyl group;
^{5 to} R ⁷ represent an alkyl group having 1 to 4 carbon atoms, and R ⁸ and R ⁹ represent a hydrogen atom, an alkyl group or an alkoxy group having 1 to 4 carbon atoms) in an amount of 2 to 35% by weight. A quaternary ammonium base-containing copolymer, wherein the release agent contains at least one member selected from the group consisting of polyethylene wax and ester wax, and the content of the release agent is 100 parts by weight of the binder resin. 0.1 to 10 parts by weight with respect to the total color toner having an acid value of 5 mgKOH / g or less, a softening point of 95 to 125 ° C, and a glass transition point of 52 to 75 ° C.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, as described above, 60 to 97% by weight of a structural unit represented by the formula (I) is used as a charge control resin for imparting positive chargeability to a toner.
1 to 33% by weight of the structural unit represented by I) and formula (III)
A major feature is that a quaternary ammonium salt group-containing copolymer having a structural unit represented by the following formula (2) to 35% by weight is used.

Since the quaternary ammonium base-containing copolymer has excellent compatibility with the polyester contained in the binder resin, it is possible to obtain a toner having excellent positive chargeability in combination with the polyester. Can be.

In the structural unit represented by the formula (I), R
¹ is preferably a hydrogen atom. In the structural unit represented by the formula (II), R ² is preferably a hydrogen atom, and R ³ has 1 carbon atom.
To 4 alkyl groups are preferred, and a butyl group is more preferred. In the structural unit represented by the formula (III), R ⁴ is preferably a methyl group, R ^{5 to} R ⁷ are preferably a methyl group or an ethyl group, more preferably a methyl group, and R ⁸ and R ⁹ are
One of them is preferably a hydrogen atom and the other is an alkyl group having 1 to 4 carbon atoms, and among the alkyl groups having 1 to 4 carbon atoms, a methyl group is more preferable.

The content of the structural unit represented by the formula (I) in the quaternary ammonium salt group-containing copolymer is 60 to 97% by weight, preferably 70 to 90% by weight. The content of the structural unit represented is 1 to 33% by weight, preferably 5 to 20% by weight, and the content of the structural unit represented by the formula (III) is 2 to 35% by weight, preferably 5 to 35% by weight. -20% by weight.

The quaternary ammonium base-containing copolymer is
It can be obtained by polymerizing the monomers corresponding to each of the formulas (I) to (III). The polymerization of such a monomer is performed, for example, by heating the monomer mixture to 50 to 100 ° C. in an inert gas atmosphere in the presence of a polymerization initiator such as azobisdimethyl valeronitrile in a solvent. Can be. The polymerization method may be any of solution polymerization, suspension polymerization and bulk polymerization, but is preferably solution polymerization.

Examples of the solvent include organic solvents such as toluene, xylene, dioxane, ethylene glycol monomethyl ether, ethyl acetate and methyl ethyl ketone, and mixed solvents of these with lower alcohols such as methanol, ethanol, propanol and isopropanol.

The monomer corresponding to the structural unit represented by the formula (III) is represented by the formula (V):

[0019]

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Wherein R ⁴ is a hydrogen atom or a methyl group;
⁵ and R ⁶ each represent an alkyl group having 1 to 4 carbon atoms), and in this case, a copolymer obtained by polymerization of the monomer is further converted to a 1 carbon atom. By quaternizing with a quaternizing agent having an alkyl group of ~ 4,
The quaternary ammonium salt group-containing copolymer can be obtained. Examples of the quaternizing agent include methyl p-toluenesulfonate, ethyl p-toluenesulfonate, methyl xylenesulfonate, methyl benzenesulfonate, and the like.
Of these, methyl p-toluenesulfonate, from which stable and high chargeability is obtained, is preferred. The amount of the quaternizing agent is 0.8 to 1 mol of the monomer represented by the formula (V).
~ 1.0 mol is preferred. For the quaternization of such a copolymer, for example, the copolymer and a quaternizing agent are mixed in a solvent at 60 to 60%.
This can be done by heating to 90 ° C.

A quaternary ammonium halide obtained by treatment with an alkyl halide having an alkyl group having 1 to 4 carbon atoms such as methyl chloride is used as a quaternized product of the monomer represented by the formula (V). The resulting copolymer is treated with an acid such as p-toluenesulfonic acid to perform counterion exchange,
The desired quaternary ammonium base-containing copolymer can also be obtained.

In the present invention, the weight average molecular weight of the quaternary ammonium salt group-containing copolymer is 5,000 or more from the viewpoint of storage stability, and from the viewpoint of compatibility with the binder resin.
It is preferably 100,000 or less, more preferably 10,000.
000 to 50,000.

The content of the quaternary ammonium base-containing copolymer is from 0.5 to 40 parts by weight, preferably from 5 to 40 parts by weight, from the viewpoint of obtaining an appropriate charge amount based on 100 parts by weight of the binder resin. It is 30 parts by weight, more preferably 10 to 25 parts by weight.

The binder resin used in the present invention contains a polyester. The content of the polyester is preferably 50 to 100% by weight, more preferably 90 to 10% by weight, in the binder resin, from the viewpoints of the dispersibility, fixability, and chargeability of the colorant.
0% by weight, particularly preferably 100% by weight. In addition,
Resins that can be used other than polyester include styrene-acrylic resin, epoxy resin, polycarbonate, polyurethane and the like.

The raw material monomer for the polyester is not particularly limited, and a known polyhydric alcohol component and a polyvalent carboxylic acid component such as carboxylic acid, carboxylic anhydride, and carboxylic acid ester are used.

The polyhydric alcohol components include polyoxypropylene (2.2) -2,2-bis (4-hydroxyphenyl) propane and polyoxyethylene (2.0)-
Bisphenol A alkylene (C2-3) oxide (average number of moles added 1-10) adduct of bisphenol A such as 2,2-bis (4-hydroxyphenyl) propane, ethylene glycol, propylene glycol, glycerin, pentaerythritol, tri Methylolpropane, hydrogenated bisphenol A, sorbitol, or their alkylene (C2-3) oxides (average addition moles 1-1)
0) adducts and the like; those containing one or more of these are preferred. Further, from the viewpoint of improving the durability of the toner, alkylene of bisphenol A (having 2 to 2 carbon atoms)
3) It is desirable that the oxide adduct is used in an alcohol component in an amount of 5 mol% or more, preferably 50 mol% or more.

Examples of the polyvalent carboxylic acid component include dicarboxylic acids such as phthalic acid, isophthalic acid, terephthalic acid, fumaric acid and maleic acid; alkyl groups having 1 to 20 carbon atoms such as dodecenylsuccinic acid and octylsuccinic acid; Number 2
Succinic acid, trimellitic acid, pyromellitic acid, anhydrides of these acids and alkyl (C1-8) esters of these acids, etc., substituted with an alkenyl group of from 20 to 20; Is preferred.

The polyester is prepared, for example, by mixing a polyhydric alcohol component and a polyhydric carboxylic acid component in an inert gas atmosphere, if necessary, using an esterification catalyst, for example, in the range of 180 to 250.
It can be produced by condensation polymerization at a temperature of ° C.

The polyester has an acid value of 5 mgKOH / g or less, a hydroxyl value of 10 to 50 mgKOH / g, and a softening point of 9 mgKOH / g.
The glass transition point is preferably from 5 to 125 ° C and from 52 to 75 ° C, respectively.

The release agent used in the toner of the present invention is selected from the group consisting of polyethylene wax having excellent compatibility with polyester contained in the binder resin, and ester wax such as carnauba wax and rice wax. It contains one or more types. The polyethylene wax and / or ester wax may be used in combination with other waxes such as polypropylene wax, sasol wax, montan wax, but the content of polyethylene wax and / or ester wax in the release agent is not limited. , 3
It is preferably from 0 to 100% by weight, more preferably from 50 to 100% by weight.

From the viewpoint of offset resistance and fixability, the content of the release agent is 0.1 to 100 parts by weight of the binder resin.
It is 1 to 10 parts by weight, preferably 2 to 5 parts by weight.

The toner of the present invention may optionally contain a positively chargeable charge control agent. However, the toner of the present invention has the formula (IV):

[0033]

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(Wherein R ¹⁰ -R ¹³ may be the same or different, and may be a lower alkyl group having 1-8 carbon atoms which may be substituted with a halogen atom, a long chain alkyl group having 10-20 carbon atoms.) Group or long-chain alkenyl group or 6-20 carbon atoms
Aryl group or aralkyl group, X ^- is a quaternary ammonium salt is preferably represented by an anion), in Formula (IV), a compound of at least two R ¹⁰ to R ¹³ is a lower alkyl group or a benzyl group Is more preferred. In the formula (IV), examples of the anion include an aromatic sulfonate ion such as a toluenesulfonic acid ion and a hydroxynaphthalenesulfonic acid ion, and an inorganic anion such as a molybdate chloride.

Commercially available quaternary ammonium salts represented by the formula (IV) include "Bontron P-51" and "Bontron P-5" which are generally used as positively chargeable charge control agents.
2 "(all manufactured by Orient Chemical Industries, Ltd.)," TP-41
5 "," TP-302 "(manufactured by Hodogaya Chemical Co., Ltd.)," C
OPY CHARGE PSY "(Clariant)
And the like. The content of the quaternary ammonium salt is usually
0.1 to 5 parts by weight, preferably 0.5 to 4 parts by weight, based on 100 parts by weight of the binder resin.

Further, the toner of the present invention includes a colorant, a conductivity modifier, a reinforcing pigment such as an extender, a fibrous substance, an antioxidant, an antioxidant, a release agent, a fluidity improver, and a cleaning agent. Additives such as a performance improver may be appropriately added.

As the colorant, all dyes and pigments used in full-color toners can be used. Carbon black, phthalocyanine blue, permanent brown FG, brilliant fast scarlet, pigment green B, rhodamine-B base , Pigment Red 57: 1, Solvent Red 49, Solvent Red 146, Pigment Blue 15: 3, Solvent Blue
35, Quinacridone, Carmine 6B, Pigment Yellow
17, disazo yellow, etc., and these can be used alone or in combination of two or more. The content of the colorant is preferably 1 to 10 parts by weight based on 100 parts by weight of the binder resin.

The toner of the present invention is not particularly limited, and includes, for example, a pulverized toner, a polymerized toner, and a capsule toner, and can be produced by a known method such as a kneading and pulverizing method, a spray drying method, and a polymerization method. As a general method, for example, after uniformly mixing a binder resin, a charge control resin, a release agent, and the like with a mixer such as a ball mill, a closed kneader or 1
Melt kneading with a screw or twin screw extruder, cooling, pulverizing,
Classification method may be mentioned. Further, a fluidity improver or the like may be added to the surface of the toner as needed. The weight average particle diameter of the toner thus obtained is preferably 3 to 10 μm.

The acid value of the toner of the present invention is 5 mgKOH / g or less, preferably 0.5 to 4 mgKOH / g in order to obtain a stable positively chargeable toner.

The softening point of the toner is 95 ° C. or higher from the viewpoint of the offset resistance of the toner, and 125 ° C. or lower from the viewpoint of the transparency of the toner.
0 ° C.

The glass transition point of the toner is 52 ° C. or higher from the viewpoint of the storage stability of the toner.
The temperature is 75 ° C or lower, preferably 60 to 75 ° C.

The full-color toner of the present invention can be used as a two-component developer by mixing it with a carrier. However, since the toner itself has excellent positive charging properties, for example, a developing roll and a developing roll The present invention can be particularly suitably used for a non-magnetic one-component developing device having a blade for applying a charge by frictional charging while uniformly regulating the thickness of the toner layer formed thereon.

[0043]

[Example] [Glass transition point] Differential scanning calorimeter "DSC2"
10 "(manufactured by Seiko Denshi Kogyo KK) at a heating rate of 10 ° C / min.

[Acid value and hydroxyl value] JIS K0070
It measures by the method of.

[Softening point] Koka type flow tester "CFT"
-500D "(manufactured by Shimadzu Corporation) and the softening point is the temperature at which half of the resin flows out (sample: 1 g, heating rate: 6).
° C / min, load: 1.96 MPa, nozzle: 1 mmφ × 1
mm).

Resin Production Example 1 12250 g of propylene oxide adduct of bisphenol A (average number of moles added: 2.2 mol) and ethylene oxide adduct of bisphenol A (average number of moles added:
2.0 mol) 21125 g, terephthalic acid 14940 g
And a mixture of 15 g of dibutyltin oxide in a nitrogen atmosphere,
The resin A was obtained by reacting with stirring at 30 ° C until the softening point measured by ASTM E28-67 reached 121 ° C. Resin A has a glass transition point of 66 ° C. and an acid value of 3.
44 mgKOH / g, hydroxyl value is 23.4 mgKOH / g
g.

Resin Production Example 2 Bisphenol A propylene oxide adduct (average addition mole number: 2.2 mol): 24500 g, bisphenol A ethylene oxide adduct (average addition mole number:
2.0 mol) 9750 g, terephthalic acid 8300 g, trimellitic acid 4800 g, alkenyl succinic acid 6700
g and a mixture of 15 g of dibutyltin oxide were used to obtain resin B in the same manner as in Resin Production Example 1. The resin B had a glass transition point of 61 ° C., an acid value of 32.1 mg KOH / g, and a hydroxyl value of 34.0 mg KOH / g.

Production Example 1 of Charge Control Resin 250 g of methanol, 200 g of toluene, 50 of styrene
0 g, butyl acrylate 40 g, dimethylaminoethyl methacrylate 60 g and a mixture of azobisdimethyl valeronitrile 12 g were polymerized at 70 ° C. for 10 hours under a nitrogen atmosphere, and the obtained reaction solution was cooled and toluene 150
g, 100 g of ethanol and 71.0 g of methyl p-toluenesulfonate were added and stirred at 70 ° C. for 5 hours to perform quaternization. The reaction solution was heated to 100 ° C., the solvent was distilled off under reduced pressure, and the mixture was pulverized with a jet mill to obtain a charge control resin A (weight average molecular weight: 14000).

Production Example 2 of Charge Control Resin 300 g of methanol, 100 g of toluene, 54 of styrene
0 g, using a mixture of 60 g of dimethylaminoethyl methacrylate and 12 g of azobisdimethylvaleronitrile,
In the same manner as in Production Example 1 of the charge control resin,
(Weight average molecular weight: 3500) was obtained.

Example 1 74.5 parts by weight of resin A, 20.0 parts by weight of charge control resin A, 1.0 part by weight of charge control agent "Bontron P-51" (manufactured by Orient Chemical Industries), and polyethylene wax "S"
P-105 "(manufactured by Sasol) 1.0 part by weight, Pigment Blue 15: 3 3.5 parts by weight for cyan toner, Pigment Red 57: 1 for magenta toner.
After 5.5 parts by weight of Pigment Yellow 17 and 3.5 parts by weight of Pigment Yellow 17 were mixed with a Henschel mixer, the mixture was melt-kneaded by a twin-screw extruder, and a collision plate type pulverizer “dispersion separator” ( Pulverization and classification were performed using Nippon Pneumatic Industrial Co., Ltd.), and the weight average particle diameter was 8.4 to 8.6 μm and the variation coefficient was 2
4.0-26.0% powder was obtained.

To 100 parts by weight of the obtained powder, 0.5 part by weight of hydrophobic silica "R-972" (manufactured by Nippon Aerosil Co., Ltd.) was added. 30 with a 10 liter Henschel mixer
The mixture was stirred at 00 r / min for 120 seconds to obtain a cyan toner, a magenta toner and a yellow toner.

Example 2 "Carnauba wax 1" was used instead of polyethylene wax.
No. (imported by Kato Yoko Co., Ltd.), a cyan toner, a magenta toner and a yellow toner were obtained in the same manner as in Example 1 except that 5.0 parts by weight were used.

Example 3 In addition to a polyethylene wax, a polypropylene wax "HIWAX-NP-055" was used as a release agent.
A cyan toner, a magenta toner and a yellow toner were obtained in the same manner as in Example 1 except that 1.0 part by weight (manufactured by Mitsui Chemicals, Inc.) was used.

Example 4 A cyan toner, a magenta toner and a yellow toner were obtained in the same manner as in Example 2 except that "Bontron P-51" was not used.

Comparative Example 1 A cyan toner, a magenta toner and a yellow toner were obtained in the same manner as in Example 1 except that no polyethylene wax was used.

Comparative Example 2 Polypropylene wax "HIWAX-NP-055" (manufactured by Mitsui Chemicals) instead of polyethylene wax.
A cyan toner, a magenta toner and a yellow toner were obtained in the same manner as in Example 1 except that 0 parts by weight was used.

Comparative Example 3 A cyan toner, a magenta toner and a yellow toner were obtained in the same manner as in Example 2 except that the charge adjusting resin A was not used.

Comparative Example 4 A cyan toner, a magenta toner and a yellow toner were obtained in the same manner as in Example 2, except that 74.5 parts by weight of resin B was used instead of resin A.

Comparative Example 5 A cyan toner, a magenta toner and a yellow toner were obtained in the same manner as in Example 2, except that 20.0 parts by weight of the charge adjusting resin B was used instead of the charge adjusting resin A.

Table 1 shows the acid value, softening point and glass transition point of the cyan toners obtained in Examples 1 to 4 and Comparative Examples 1 to 5. The magenta toner and the yellow toner also had substantially the same physical properties as the cyan toner obtained in the same example or comparative example.

[0061]

[Table 1]

Test Example 1 Reverse-developing non-magnetic one-component developing device "magicol"
or2 "(manufactured by QMS), the cyan toner is mounted on a positively charged reversal developing device modified by removing the fixing portion from the photoconductor with a positively charged OPC belt, and applying +100 V to the grid potential and +700 V to the bias potential. Over,
An unfixed image was obtained. Fog on the photoreceptor was collected with a mending tape, the difference (ΔE) from the whiteness of the blank was measured, and the degree of fog on the photoreceptor was evaluated according to the following evaluation criteria. Table 2 shows the results.

[Evaluation Criteria] A: ΔE is less than 2.0, which is particularly good for practical use. ：: ΔE is 2.0 to 4.5, and there is no problem in practical use. ×: ΔE exceeds 4.5 and cannot be actually used.

Test Example 2 A cyan toner was mounted on a developing device modified from “CX7700” (manufactured by Sharp Corporation) so that the fixing device was removed and the fixing oil supply device was removed, and the temperature of the fixing roller was adjusted to 100 ° C. An image was displayed at a speed of 100 mm / sec while the temperature was gradually raised from 220 ° C to 220 ° C. At this time, after performing image output at each temperature, the blank transfer paper is continuously sent to the fixing roller under the same conditions, and the temperature range of the fixing roller where the white paper does not cause toner stain is set as a non-offset range, The offset property was evaluated according to the following evaluation criteria. Table 2 shows the results.

[Evaluation Criteria] A: The non-offset region exceeds 50 ° C., which is particularly good for practical use. ：: The non-offset range is 20 to 50 ° C., and there is no problem in practical use. ×: The non-offset region is lower than 20 ° C., and cannot be actually used.

Test Example 3 A cyan toner, a magenta toner, and a yellow toner were mounted on an apparatus modified in the same manner as in Test Example 1, the developing bias was adjusted, and the adhesion amount of each of the single colors of yellow, magenta, and cyan was 0.6 mg / cm. ^{In step 2} , a yellow solid image, a magenta solid image, a cyan solid image, a process red solid image, a process green solid image, and a process blue solid image were collected. A ^* and b ^* of each image were measured with “X-Rite938” (manufactured by X-Rite),
A ^* and b ^* were plotted on the chromaticity diagram. By measuring the area of the obtained hexagon, the color reproducibility was evaluated according to the following evaluation criteria. In addition, instead of paper, OHP film (manufactured by Nakabayashi Co., dry copy / double-sided type for LBP) is printed, and the color difference between the OHP print and the projected print is visually compared. Was evaluated according to the evaluation criteria of Table 2 shows the results.

[Evaluation Criteria of Color Reproducibility] A: The area exceeds 6000, which is particularly good for practical use. ：: The area is 3500 to 6000, which is good for practical use. X: The area is less than 3500 and cannot be actually used.

[Evaluation Criteria of Light Transmittance] A: Both colors are almost the same, which is particularly good for practical use. ：: Actually usable, although there is a slight difference between the two colors. ×: There is a clear difference between the two colors, and it cannot be used in practice.

[0069]

[Table 2]

From the above results, in comparison with the toners of Comparative Examples 1 to 5, the toners of Examples 1 to 4 have no photoconductor fog even when used in a non-magnetic one-component developing apparatus, and have excellent offset resistance. It can be seen that the toner has excellent color reproducibility and light transmittance required for a full-color toner.

[0071]

According to the present invention, it has excellent positive chargeability,
Even when used in a non-magnetic one-component developing device, there is provided a full-color toner having excellent image resistance, sufficient offset resistance, color reproducibility and light transmittance, without fogging of a photoreceptor. It became possible.

Claims (3)

[Claims] 1. A full-color toner comprising a polyester-containing binder resin, a charge control resin, and a release agent, wherein the charge control resin has the formula (I): (Wherein R ¹ represents a hydrogen atom or a methyl group) in an amount of 60 to 97% by weight of a structural unit represented by the formula (II): Wherein R ² is a hydrogen atom or a methyl group, and R ³ is
Represents an alkyl group of 1 to 6).
3% by weight and formula (III): (Wherein, R ⁴ represents a hydrogen atom or a methyl group, R ^{5 to} R ⁷ represent an alkyl group having 1 to 4 carbon atoms, R ⁸ and R ⁹ represent a hydrogen atom, an alkyl group or an alkoxy group having 1 to 4 carbon atoms) A) a quaternary ammonium salt group-containing copolymer having a structural unit represented by 2) to 35% by weight, wherein the release agent contains at least one member selected from the group consisting of polyethylene wax and ester wax; When the content of the release agent is in the binder resin 1
0.1 to 10 parts by weight with respect to 00 parts by weight, the acid value of the toner is 5 mgKOH / g or less, and the softening point is 95 to 125 parts by weight.
And a glass transition point of 52 to 75 ° C. 2. A compound of the formula (IV): (Wherein, R ^{10 to} R ¹³ may be the same or different,
A lower alkyl group having 1 to 8 carbon atoms which may be substituted by a halogen atom, a long-chain alkyl group or a long-chain alkenyl group having 10 to 20 carbon atoms, an aryl group or an aralkyl group having 6 to 20 carbon atoms, X ^- is 2. The full-color toner according to claim 1, comprising 0.1 to 5 parts by weight of a quaternary ammonium salt represented by an anion) with respect to 100 parts by weight of the binder resin. 3. The full-color toner according to claim 1, which is used in a non-magnetic one-component developing device.