JPH09171269A - Combination of color toner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combination of color toners with which colors in a wide range of the color gamut are obtainable and which has the excellent color resolution of high lightness and triboelectric characteristic. SOLUTION: The four toners in the combination of the four color toners for development electrostatic latent images to allow the formation of the entire color gamut image are composed of a cyan toner, magenta toner, yellow toner and black toner. These toners respectively consist of resins and pigments. The pigment for the cyan toner is β type copper phthalocyanine, the pigment for the magenta toner is monoazo lithol rubin, the pigment for the yellow toner is a diazobenzidine an the pigment for the black toner is carbon black.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates generally to toner and developer compositions, and more particularly to developer and toner compositions having some pigments or mixtures of pigments therein. Provides a full-color developed image with excellent resolution. In a specific embodiment, the toner of the present invention contains a flashed (dispersed) pigment, which flash pigment is used to dissolve or melt the resin after selecting a wet pigment or a wet cake for each color toner. It is heated and sheared to remove water from the pigment, and in some embodiments creates a polymer phase around the pigment, which allows, for example, substantial, partial passivation of the pigment. A solvent is added to the resulting product to achieve a high quality dispersion of pigment and resin, where about 2-50% by weight,
Preferably, about 30 to about 40% by weight pigment is included.
The resulting product is subsequently mixed with a toner resin, which may be similar to or different from the resin mixed with the wet pigment, to provide a toner consisting of the resin and the pigment. In a specific example, from about 2 to about 25% by weight, based on the weight of the resin and pigment toner components, preferably,
It contains from about 2 to about 15% by weight of pigment. In the specific example,
One toner is formed with four different pigments, or four toners with different pigments. According to the present invention,
Four color toners containing colored pigments dispersed in a high quality state are provided, and particularly in a reflective developed image, a high color gamut (h
In addition to having a color gamut), it is possible to combine toners with high transparency, and this transparency can remove a considerable amount of scattered light, in the specific example, most of the scattered light. For example, about 70 to about 98% of the transmitted light passing through the image fused onto the transparent paper can be projected from the overhead projector onto the screen. The toner and developer compositions of the present invention may be electrophotographic printed, particularly known xerographic imaging and printing processes, and more specifically,
It may be selected for use in full color processing.

Important to the embodiments of the present invention is the selection of a pigment or mixture of pigments for each toner, the toner,
For example, a combination set or gamut (gamut) of cyan toner, magenta toner, yellow toner and black toner.
) Is provided with said pigment to provide good stable triboelectric properties, reasonably stable admixture properties, excellent color resolution, the ability to obtain any desired color, for example thousands of different colors and Described herein, including the full color gamut of different developed color images, substantial toner strength (durability) relative to relative humidity, toner that is not affected by environmental changes such as temperature and humidity. Many advantages of the present invention are made possible. Also,
Separate toners having these advantages are provided, such as black, cyan, magenta and yellow toners, and mixtures thereof, which toners may be selected for multicolor development of electrostatic latent images. The specific selection of color toners together with extremely good quality and substantially dispersed pigments results in a fused image so that the surface of the image is smooth and a wide color gamut that ensures the production of thousands of colors. Obtainable. The toner composition of the present invention usually contains a surface additive, and may contain a charge additive and a wax (for example, polypropylene).

In an embodiment of the present invention, "combination" or "set" refers to toners that are not mixed together, each toner being present as a separate composition, and each toner having a composition of Xerox Corporation 577.
It is housed in a separate housing containing the carrier in a xerographic machine such as 5. For example, cyan toner is in the first developer housing, magenta toner is in the second separate developer housing, yellow toner is in the third separate developer housing, and black toner is the fourth. In a separate housing, each developer housing containing therein particles of carrier particles, for example a surface-coated core.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to provide colors such as red, blue, green, brown, yellow, pink, violet, color combinations thereof, and color variations of these colors, such as: From light red to dark red, in the middle red color variation, from light green to dark green, in the middle green color variation, from light brown to dark brown, from light yellow to dark yellow, in the middle Yellow color variations, light violet to dark violet, intermediate violet color variations, light pink to dark pink, intermediate pink color variations, etc. Or to provide a toner to enable all continuous color.

Another object of the present invention is to provide a toner having an excellent high lightness color resolution.
These toners have a high light transmission, and about 70 to about 98% of the light transmitted through the image deposited on the transparent paper can reach the screen from the overhead projector.

Another object of the present invention is that in electrophotographic imaging devices and printers, no background deposits are formed, which is substantially stain resistant or resistant to stains, and It is in the formation of toners that have the ability to develop images, including digital images, with excellent resolution, and such toner compositions are selectable for high speed electrophotographic devices in excess of 70 parts per minute.

Another object of the present invention is a toner combination which can be incorporated into a full process color machine of an image forming device such as Xerox Corporation 5775 and 5760. In this combination, for example, each of the four toners is selected to develop and provide images of various colors, and more particularly, to copy any color that was present in the original (original), The resulting image is about the same in color, color resolution, and color brightness as the original image.

[0008]

SUMMARY OF THE INVENTION An aspect of the present invention is a combination of four color toners for the development of an electrostatic latent image that enables formation of a full color gamut image, said four toners comprising:
The toner is composed of a cyan toner, a magenta toner, a yellow toner, and a black toner, each toner is made of a resin and a pigment, the pigment for the cyan toner is β-type copper phthalocyanine, and the pigment for the magenta toner is monoazolitol. Rubin, a combination of color toners, wherein the pigment for the yellow toner is diazobenzidine and the pigment for the black toner is carbon black.

[0009]

Embodiments of the present invention include toners, preferably cyan toners, magenta toners, and combinations of toners, including yellow toners and optionally black toners, each of which is a resin and a pigment. The pigment for cyan toner is β or β type copper phthalocyanine, the pigment for magenta toner is xanthene silicomolybdate of rhodamine 6G basic dye, and the pigment for yellow toner is diazobenzidine, The pigment for the black toner is carbon black; a combination of four color toners for the development of the electrostatic latent image allows the formation of a full color gamut image, wherein the four toners are cyan toner and magenta toner. , Yellow toner and black toner, and the toner is resin and Pigment for cyan toner is β copper phthalocyanine, pigment for magenta toner is xanthene silicomolybdate of rhodamine 6G basic dye, pigment for yellow toner is diazobenzidine, and for black toner The pigment is carbon black; the cyan pigment is Pigment Blue 15: 3 having the color index configuration number 74160.
And the magenta pigment has a color index configuration number 4
Pigment Red 81: 3 having 5160: 3, and the Yellow pigment is Pigment Yellow 17 having Color Index Configuration Number 21105.

Here, each of the pigments is included in an amount of about 2 to about 25% by weight based on the weight of the resin and the pigment; each of the pigments is included in an amount of about 2 to about 15% by weight of the resin and the pigment. The cyan, magenta, and yellow pigments have a particle diameter size or agglomerate diameter size of about 0.01 μm to about 3 μm; and the cyan, magenta, and yellow pigments have a particle diameter size of about 0.01 μm to about 3 μm. The black pigment has a particle diameter size of about 0.001 μm to about 0.1 μm; the cyan, magenta and yellow pigments have a particle diameter size of about 0.03 μm or an agglomerate diameter size; Having a particle diameter size or agglomerate diameter size of 0.01 .mu.m to about 0.3 .mu.m and wherein the pigment is evenly dispersed in the toner resin, which results in less light scattering and reflective copying. Or to increase the color gamut in an overhead transparent paper copy; the cyan, magenta, and yellow pigments are dispersed by flashing the cyan, magenta, and yellow pigments onto the toner resin, and the cyan, magenta, or yellow pigment is a wet wet type. The cake is mixed with a toner resin and the water is removed to produce a pigmented resin containing about 2 to about 50 weight percent pigment, based on the weight percent of the toner resin and the pigment. The cyan, magenta, and yellow pigments are dispersed by flashing the cyan, magenta, or yellow pigments onto the toner resin, and the wet wet cake of the cyan, magenta, or yellow pigment is mixed with the toner resin, and the moisture is removed. A pigment coloring resin containing about 30 to about 40% by weight of pigment is produced, and the resulting pigmented resin is obtained. Each of the resin concentrate products is mixed and diluted with additional toner resin to produce cyan, magenta, and yellow pigments containing from about 2 to about 15% by weight of the cyan, magenta, or yellow pigment, respectively; toners The resulting fused image has a Gardner gloss of about 10-80 gloss units; each four toner combination for development of an electrostatic latent image. It is possible to form a full-color gamut image by setting or color gamut, four toners are cyan toner, magenta toner, yellow toner and black toner, each of the toner is made of resin and pigment, and a pigment for cyan toner is made of β
Copper phthalocyanine, the pigment for magenta toner is rhodamine 6G basic dye xanthene silicomolybdate, the pigment for yellow toner is diazobenzidine, and the pigment for black toner is carbon black; The fused image obtained by the combination is a combination of toners having a Gardner gloss of about 40 to 70 gloss units, wherein about 70 to about 70 of transmitted light passing through the fused image contained on the transparent material. 98
% From the overhead projector to the projection screen, wherein each of the cyan, magenta, and yellow pigments has a particle diameter size or agglomerate diameter size of about 0.01 μm to about 0.3 μm, and the black pigment Have a particle diameter size or agglomerate diameter size of from about 0.001 μm to about 0.1 μm, and the pigment is evenly dispersed in the toner resin, thereby reducing light scattering and reflecting copy and overhead transparency paper. In the copy, the color gamut is enlarged, and each of the cyan, magenta, and yellow pigments is dispersed by flashing the cyan, magenta, or yellow pigment into the toner resin, and the cyan, magenta, or yellow wet wet cake is used as a toner. When mixed with resin, the water content is the weight of the toner resin and the pigment. To produce a pigmented resin containing from about 2 to about 50% by weight of pigment, and each of the resulting pigmented resin concentrate concentrates is mixed and diluted with additional toner resin to form the cyan pigment. , Cyan, magenta and yellow toners, each containing from about 2 to about 15% by weight of magenta or yellow; a combination of toners after producing an electrostatic image on the photoconductive imaging member,
An image generation process including their development according to set and color gamut, in which four toners are selected, these toners are composed of cyan toner, magenta toner, yellow toner and black toner, and each toner is composed of resin and pigment. , The pigment for cyan toner is β copper phthalocyanine, the pigment for magenta toner is xanthene silicomolybdate of rhodamine 6G basic dye, the pigment for yellow toner is diazobenzidine, and the pigment for black toner is Carbon black; then the developed image is transferred to a substrate and the image is fixed to the substrate.

A specific example of the present invention is a cyan toner,
The toner includes a toner composed of a mixture of magenta toner, yellow toner and black toner, each toner is composed of resin and pigment, the pigment for cyan toner is β or β type copper phthalocyanine, and the pigment for magenta toner is rhodamine 6G base. Is a dye xanthene silicomolybdate, a pigment for yellow toner is diazobenzidine, a pigment for black toner is carbon black, cyan toner, magenta toner, yellow toner and black toner, each toner, It is composed of a thermoplastic resin and several pigments or colorants for each toner. As the pigment, for example, a pigment for cyan toner is β such as Pigment Blue 15: 3 having a color index constitution number 74160. (Beta) type copper phthalocyanine Magenta toner pigment,
Rhodamine 6 such as Pigment Red 81: 3 having color index composition number 45160: 1
G-basic dye xanthene silicomolybdate, and pigments for yellow toner have color index constitution numbers 21105, 21090, 21100, and 210.
Pigments such as Pigment Yellow 17 and / or Pigment Yellow 12 and / or Pigment Yellow 13 and / or Pigment Yellow 14 having 95, respectively, and a pigment for black toner are, for example, Colombia Chemicals Company (Columbian Chemical
s) and carbon black of REGAL 330 (trade name) of Cabot Corporation. Various effective amounts based on the resin and pigment toner components, for example, from about 2 to about 25% by weight, preferably about 2
~ About 15% by weight of colorant or pigment is included in each toner.
Examples of Pigment Blue 15: 3 include Heliogen Blue available from BASF and Phthalocyanine Blue available from Sun Chemicals. Examples of Pigment Red 81: 3 are FANAL PINK D4830 (trade name) available from Basuf and Rhodamine available from Sun Chemical.
Y. S. including. An example of Pigment Yellow 17 (a preferred pigment in a specific example) includes Diarylide AAOA Yellow available from Sun Chemical. Examples of Pigment Yellow 12, Pigment Yellow 13 and Pigment Yellow 14 include Diary Ride Yellow, Diary Ride Yellow and Diary Ride Yellow, each available from Sun Chemical Company. For more information on these color pigments, see
Index)) (3rd edition, volumes 1-8), the disclosure of which is incorporated herein by reference in its entirety and forms part of the present invention. The amount of each color pigment is preferably about 2 to about 15% by weight, based on the toner component of the resin and pigment. The exact amount of each pigment contained in the toner is determined by the mass of toner deposited on the reflective copy, which adjusts the pigment concentration to achieve maximum color gamut. This allows the production of thousands of different colors and / or shades. This amount can be determined by measuring the chromaticity of the color image and setting the pigment concentration to maximum or near maximum chromaticity. For chromaticity determination, refer to "Principals of Color T
echnology, 2nd Edition ", FW Billmeyer, Jr. and M.
See Saltsman, John Wiley & Son, 1981.
This disclosure is incorporated herein in its entirety and forms part of the present invention.

In a specific example, cyan toner,
A toner composition comprising a magenta toner, a yellow toner and a black toner is provided, each toner comprising a thermoplastic resin and some pigments or colorants for each toner. The pigment is a β-type copper phthalocyanine such as Pigment Blue 15: 3 having color index composition number 74160, and the magenta toner pigment is Rhodamine 6G base such as Pigment Red 81: 3 having color index composition number 45160: 3. Xanthene silicomolybdate, which is a functional dye, and pigments for yellow toner are color index constitution numbers 21105, 21090, 2110.
Pigment Yellow 1 having 0 and 21095 respectively
7 and / or Pigment Yellow 12 and / or Pigment Yellow 13 and / or Pigment Yellow 14 and the like, and the pigment for the black toner is, for example, carbon black and carbon black available from Columbia Chemicals. For example, carbon black of Regal 330 (trade name) manufactured by Cabot Corporation. For example, various effective amounts, for example from about 2 to about 25% by weight, preferably from about 2 to 2 based on the resin and pigment toner components.
About 15% by weight of colorant or pigment is included in each toner. Examples of Pigment Blue 15: 3 include Heliogen Blue available from Basuf and Phthalocyanine Blue available from Sun Chemical. An example of Pigment Red 81: 3 is Farnal Pink D4830 available from Basuf.
(Trade name) and Rhodamine Y. S. including. An example of Pigment Yellow 17 (a pigment preferred in the specific example) includes Diarylide AAOA Yellow available from Sun Chemical Company.

In a specific example, cyan toner,
A toner composition comprising a magenta toner, a yellow toner and a black toner is provided, each toner comprising a thermoplastic resin and some pigments or colorants for each toner. The pigment is a β-type copper phthalocyanine such as Pigment Blue 15: 3 having color index composition number 74160, and the magenta toner pigment is Rhodamine 6G base such as Pigment Red 81: 3 having color index composition number 45160: 3. Xanthene silicomolybdate, which is a functional dye, and pigments for yellow toner are color index constitution numbers 21105, 21090, 2110.
Pigment Yellow 17 having 0 and 21095 respectively
And / or Pigment Yellow 12, and / or Pigment Yellow 13, and / or Pigment Yellow 14, and the pigment for the black toner is, for example, carbon black and Cabot Corporation available from Columbia Chemicals. For example, carbon black of Legal 330 (trade name) of the same company. For example, various effective amounts of from about 2 to about 25% by weight, preferably from about 2 to about 15 based on the resin and pigment toner components.
Weight percent colorant or pigment is included in each toner. Examples of Pigment Blue 15: 3 include Heliogen Blue available from Basuf and Phthalocyanine Blue available from Sun Chemical. An example of Pigment Yellow 17 (a preferred pigment in the specific examples) includes Diarylide AAO Yellow available from Sun Chemical Company.

Further, in a specific example, a cyan toner,
A toner composition comprising a magenta toner, a yellow toner and a black toner is provided. Each toner comprises a thermoplastic resin and some pigments or colorants for each toner. Pigments include β-copper phthalocyanine, such as Pigment Blue 15: 3 having Color Index Configuration Number 74160,
Pigments for magenta toner include monoazolitol rubin such as Pigment Red 57: 1 having color index configuration number 15850: 1, examples of pigments for yellow toner include the compounds described above, pigments for black toner are For example, carbon black available from Columbia Chemicals, Inc., and Regal 330 (trademark) carbon black available from Cabot Corporation. For example, various effective amounts of colorants or pigments are included in each toner, such as from about 2 to about 25% by weight, and preferably from about 2 to about 15% by weight, based on the resin and pigment toner components. Examples of Pigment Blue 15: 3 include Heliogen Blue available from Basuf and Phthalocyanine Blue available from Sun Chemical.

Further, in a specific example, a cyan toner,
A toner composition comprising a magenta toner, a yellow toner and a black toner is provided. Each toner comprises a thermoplastic resin and some pigments or colorants for each toner. The pigment may be a β-type copper phthalocyanine such as Pigment Blue 15: 3 having color index configuration number 74160 and / or a color index configuration number 7410.
A metal-free phthalocyanine such as Pigment Blue 16 having 0, and the magenta toner pigment is a rhodamine 6G basic dye xanthene silicomolybdate such as Pigment Red 81: 3 having a color index configuration number 45160, and / or Color index configuration number 73
Quinacridone, such as Pigment Red 122 having 915,
And / or color index configuration number 15850:
1 is a monoazolitol rubin such as Pigment Red 57: 1, and pigments for yellow toner include color index composition numbers 21105, 21090, 21100,
And / or 21095 respectively and diazobenzidine such as Pigment Yellow 17 and / or Pigment Yellow 12 and / or Pigment Yellow 13 and / or Pigment Yellow 14 and / or Isoindoline such as Pigment Yellow 185. The pigment for the black toner is, for example, carbon black available from Columbia Chemicals Co., Ltd., or Regal 330 (trade name) carbon black available from Cabot Corporation. Various effective amounts of colorant or pigment are included in each toner, such as from about 2 to about 25% by weight, preferably from about 2 to about 15% by weight, based on the resin and pigment toner components. Examples of Pigment Blue 15: 3 include Heliogen Blue available from Basuf and Phthalocyanine Blue available from Sun Chemical. Examples of Pigment Blue 16 include Heliogen Blue available from Basuf. Other pigments,
For example, yellow is as described in the present specification. The above four toners have various effective amounts, for example, about 10 to about 25, when the total amount is about 100% by weight.
% By weight can be mixed. For mixtures, various effective amounts of each pigment can be selected, for example, from about 1% to about 99% by weight of the first pigment and from about 99% to about 1% by weight of the second pigment.

In a specific embodiment, a combination of separate toner compositions comprising cyan toner, magenta toner, yellow toner and black toner is provided, each toner comprising a thermoplastic resin and some pigments for each toner. Alternatively, the pigment may be a colorant. For example, a pigment for cyan toner is a color index constitution number 74160.
Is a β-type copper phthalocyanine such as Pigment Blue 15: 3, and the pigment for magenta toner is Pigment Red 122 having a color index constitution number 73915.
Is a quinacridone, and the pigment for yellow toner is
Isoindoline yellow, such as Pigment Yellow 185, having color index configuration number 56290, and pigments for black toners include, for example, carbon black available from Columbia Chemicals and carbon of Regal 330 (trademark) from Cabot Corporation. Black etc. For example, various effective amounts, for example from about 2 to about 25, based on the resin and pigment toner components.
%, Preferably from about 2 to about 15% by weight of colorant or pigment is included in each toner. Examples of Pigment Blue 15: 3 include Heliogen Blue available from Basuf,
Examples of magenta and yellow are similar to those described herein.

In a specific example, a toner composition comprising a set of cyan toner, magenta toner, yellow toner and black toner is provided, and each toner is
It is composed of a thermoplastic resin and some pigments or colorants for each toner. As the pigment, for example, a pigment for cyan toner is β-type copper phthalocyanine such as Pigment Blue 15: 3 having a color index constitution number 74160. Yes, the pigment for magenta toner is Pigment Red 81:
3 is a rhodamine 6G basic dye such as xanthene silicomolybdate, a yellow toner pigment is an isoindoline yellow such as a pigment yellow 185 having a color index constitution number 56290, and a black toner pigment is, for example, Examples thereof include carbon black available from Columbia Chemicals, Inc., and carbon black of Regal 330 (trade name) of Cabot Corporation. Various effective amounts of colorant or pigment are included in each toner, such as from about 2 to about 25% by weight, preferably from about 2 to about 15% by weight, based on the resin and pigment toner components. Examples of Pigment Blue 15: 3 include Heliogen Blue available from Basuf, and examples of magenta and yellow are similar to those described herein, such as Paliotol Y (Paliotol Y).
ellow) D1155, Farnal Pink D4830 (trade name), and Rhodamine Y. S. Including.

In an embodiment, the invention relates to a combination of four color toners for the formation of full color images,
The cyan toner contains Pigment Blue 15: 3 and / or Pigment Blue 16, and the magenta toner contains Pigment Red 81: 3 and / or Pigment Red 122 and / or Pigment Red 57 :.
1 and the yellow toner contains Pigment Yellow 17, Pigment Yellow 12, Pigment Yellow 13, 14 and / or Pigment Yellow 185, a ratio of 15: 3 to 16 is, for example, dangerous waste regulations for copper disposal. Can be adjusted to comply with or to keep to a minimum regulation.

A specific embodiment of the present invention is a xerographic image forming and printing apparatus comprising image forming member components, charging components, developing components, transfer components and fusing components that interact with each other, wherein the developing components are carriers. And a combination of four color toners, wherein the four color toners are
Each of the toners includes a cyan toner, a magenta toner, a yellow toner, and a black toner, respectively, as described herein, each consisting of, for example, a resin and a pigment.

When producing the toner in the embodiment, it is important to select a wet pigment of water wet and non-dry pigment or a wet cake of pigments. These pigments are mixed with the toner resin with these pigments and heated, for example, at a temperature of about 50 ° C. to about 125 ° C.,
The toner resin is flushed by a known method to remove water. Before mixing with the toner resin, a solvent such as
An effective amount of an organic solvent such as toluene or xylene is added to the wet pigment. In embodiments, the toner product obtained after heating and cooling has a pigment concentration of from about 5 to about 50 weight percent, preferably from about 25 to about 50 weight percent. Thereafter, the toner resin and pigment product can be diluted by further adding a toner resin, for example, polyester, to the toner resin and pigment product, thereby increasing the amount of pigment contained. For example, from about 50% by weight to about 20
Can be reduced to about 40% by weight.

The toner composition of the present invention is a ZSK5 available from Werner & Pfeidirer.
3 can be manufactured with a toner extrusion device such as
The formed toner composition is removed from this device.
After cooling, the toner composition has a thickness of 25 μm as determined by a Coulter Counter.
To achieve toner particles having an average volume median diameter of less than, preferably about 8 to about 12 μm, for example,
Sturtevant micronize
r)). The toner composition can subsequently be classified, for example, using a Donaldson Model B classifier, to remove fines, which are toner particles with a mean volume median diameter of less than about 4 μm.

Illustrative of suitable toner resins selected for the toner and developer compositions of the present invention are thermoplastics, such as polyamides, polyolefins containing homopolymers or copolymers of two or more vinyl monomers, Styrene acrylate, styrene methacrylate, styrene butadiene, crosslinked styrene polymers, epoxies, polyurethanes and vinyl resins; common polyesters,
For example, a polymer esterification product of a diol containing a dicarboxylic acid diphenol, a known linear polyester, a commercially available SPAR (trade name) polyester, and the like are included.
Also, extruded polyester may be selected as the toner resin as described in US Pat. Nos. 5,376,494 and 5,227,460, which are incorporated herein by reference and which form a part of the present invention.

Externally-added particles containing a flow-enhancing additive (usually present on the surface of the added particles) are mixed with the toner composition of the present invention. Examples of these additives are
Colloidal silica, such as DeGussa Ch
Aerosil available from emicals)
L, tradename) R972, such as a mixture of Aerosil, metal salts and metal salts of fatty acids including zinc stearate, metal oxides such as aluminum oxide, titanium oxide, cerium oxide;
And mixtures thereof. These additives are generally about 0.1% to about 5% by weight, preferably about 0.
Included in an amount of 1% to about 1% by weight. Some of the above additives are described in U.S. Patents 3,590,000 and 3,800,58.
No. 8, the disclosure content of which is incorporated herein by reference in its entirety.

Further in accordance with the present invention, the colloidal silica such as Aerosil is about 1-30% by weight, preferably 1%.
After surface treatment with 0% by weight of charge additive,
The above colloidal silica is added to the toner in an amount of 0.1 to 10% by weight, preferably 0.1 to 1% by weight.

As indicated herein, the toner compositions of the present invention include low molecular weight waxes such as Allied Chemical & Petrolite Corporation.
and Petrolite Corporation), polypropylene and polyethylene commercially available from Eastman Chemical Products, Inc. EPOLENE N-15 (trade name), Sanyo Kasei (Sanyo) VISCOL 550P (trade name) low weight average molecular weight polypropylene available from Kasei KK), and similar waxes. Commercially available polyethylene selected in this manner has a molecular weight of from about 1,000 to about 1,50.
In addition to having a molecular weight of 0, the commercially available polypropylene used in the toner composition of the present invention has a molecular weight of from about 4,000.
It is believed to have a molecular weight of about 7,000. A number of polyolefins selected for the toner of the present invention, such as:
Polyethylene and polypropylene are described in British Patent 1,442,
It is shown in issue 835. The disclosure of which is incorporated herein by reference in its entirety and forms part of the present invention.

The low molecular weight wax material is present in the toner compositions of the present invention in various amounts, but generally from about 1 to about 1.
It is contained in the range of about 15% by weight, preferably about 2-10% by weight.

The toner compositions of the present invention contain various known suitable and effective positive or negative effective charge enhancing additives, preferably from about 0.1 to about 10% by weight, more preferably from about 1 to about 3. It can be chosen to contain wt%. In this example,
Quaternary ammonium compounds containing alkylpyridinium halides; alkylpyridinium compounds described in US Pat. No. 4,298,672; organic sulfate and sulfonate compositions described in US Pat. No. 4,338,390; bisulfonates; ammonium sulfate (DD)
ABS); Distearyl dimethyl ammonium bisulfate (DD) described in US Pat. No. 5,114,821.
AMS); cetylpyridinium tetrafluoroborate; disterial dimethyl ammonium methylsulfate; aluminum salts such as BONTRON
) E84 (trade name) or E88 (trade name) (Hodogaya Chemical), quaternary ammonium nitrobenzene sulfonate; a mixture of antistatic agents,
For example, a mixture of DDABS and DDAMS; other known charging additives and the like are included. In addition, effective known internal and external additives can be selected in these examples as toners of the present invention.

The toner of the present invention is incorporated into the developer composition by mixing the toner with carrier particles. Examples of carriers include granular zircon, granular silicon, glass, steel, iron, nickel, ferrites such as copper zinc ferrite, copper manganese ferrite, and strontium hexaferrite, silicon dioxide and the like. In specific examples, the mixtures described in U.S. Pat. Nos. 4,937,166 and 4,935,326, such as Kainer (KYNAR ™) and PMMA, a mixture of three polymers, a mixture of four polymers, and each pair. A polymer mixture pair is selected in which is a conductive carrier coating and an insulative carrier coating. For example, about 0.1 to about 10, preferably about 1 to about 3.
Various effective amounts of carrier coating of wt% can be selected. In an embodiment, the carrier core also comprises
The entire surface of the carrier core is coated or partially coated.

These carrier particles include from about 5 to about 30% by weight of a conductive material, such as carbon black, in the coating, which is included in the exemplary embodiment from about 0.1 to about 3% by weight.

In addition, the preferably spherical carrier particles generally have a diameter of from about 50 μm to about 1,000 μm, preferably from about 60 μm to about 100 μm, thereby providing an electrostatic latent image during development. Allows these particles to have sufficient concentration and inertia so that they do not adhere. The carrier components can be mixed with the toner in various preferred combination ratios of from about 1 to 5 parts by weight of toner to about 100 to about 200 parts by weight of carrier.

The toner and developer compositions of the present invention can be selected for use in electrophotographic imaging devices containing conventional photoreceptors, provided that they can be negatively charged. .

[0032]

【Example】

Example I The color index configuration number 741 in a propoxylated bisphenol A linear polyester resin by using a flushing procedure as follows.
60 pigment blue 15: 3 was predispersed. Such propoxylated bisphenol A linear polyester resins are commercially available and are described in US Pat. No. 3,590,000, the disclosure of which is incorporated herein by reference in its entirety.

An Aaron Process (Aaron Process) consisting of a two-horsepower direct-connection gearmotor and a sigma-designed mixed blade with a front blade speed set to 60 rpm (revolutions per minute) and a rear blade speed set to 34 rpm (flasher) Co
In a mpany) lab mixer, 1,600 g of linear polyester and 160 g of toluene were mixed and heated to 65 ° C until the resin was completely dissolved. Pigment blue 1
5: 3 was added to make three parts of a wet cake type mixture having the following Pigment Blue 15: 3 / water weight ratio of 50/50. 1,000g of Pigment Blue 1
A 5: 3 wet cake (50% water content) was added to the resin / toluene mixture. The water from the wet cake pigment was replaced with a flushed resin / toluene solution and the water decanted. Another 567 g of Pigment Blue 15: 3 same wet cake (containing 50% moisture) was added to the mixture to allow mixing, then the moisture was separated from the pigment and decanted. Finally, the final portion of the wet cake, 567 g, was added to this mixture to allow mixing with the resin / toluene, water was separated from the pigment a third time and water was decanted again. The resin / toluene / pigment mixture was further mixed at 65 ° C. for 1 hour. The mixture was then evacuated to remove toluene and entrained moisture from the resin / pigment mixture. The mixture was then cooled and ground into a powder. Pigment Blue 15 obtained:
Flash No. 3 contained a 60/40 wt% ratio of resin / pigment.

A toner was prepared using the pre-dispersed pigment prepared above using a Werner & Pfeiderer ZSK-28 twin screw extruder having the following manufacturing conditions. Barrel temperature distribution: 105/11
0/110/115/115/115/120 ° C, die head temperature: 140 ° C, screw speed: 250 rpm
(Rpm / min), and average residence time: 9 for a processing rate of 6 pounds per hour, with a production condition of about 3 minutes.
0 part of the above linear polyester resin obtained from bisphenol A, fumaric acid and propylene glycol;
Part of a mixture with Pigment Blue 15: 3 Flash was mixed. The resulting mixture was then cooled, micronized and classified using conventional jet milling to an average volume median size of 7 μm. The obtained cyan color toner was 96 parts of linear polyester resin and 4 parts of Pigment Blue 15: 3.
When the pigment was measured by a transmission electron microscope, the particle size was 0.1 μm in average particle diameter.

Example II The procedure of Example I was repeated except that Pigment Red 81: 3 was used in place of Pigment Blue 15: 3 to produce a magenta toner.

The magenta color toner obtained is 96 parts of linear polyester resin, and 4 parts of Pigment Red 81:
3 and the pigment was measured by a transmission electron microscope to have a particle size of 0.1 μm in average particle diameter.

Example III The process of Example I was repeated except that Pigment Yellow 185 was used in place of Pigment Blue 15: 3 to produce a yellow toner.

The resulting yellow color toner is 96 parts linear polyester resin, and 4 parts Pigment Yellow 18
Contains 5. When the pigment was measured by a transmission electron microscope, the particle size was 0.3 μm in average particle diameter.

Example IV A full process color image was prepared as follows using the toner combinations of Examples I, II, and III.

For each of the toners of Examples I, II, and III,
A surface additive of 0.3% zinc stearate, 0.9% fumed silica, 1.1% fumed titanium dioxide was blended with Xerox Corporation carrier. It was possible to obtain three separate developers by mixing with a 65 μm Hoeganese core coated with 0.75% by weight of an 80/20% by weight mixture of polymethylmethacrylate / carbon black. .

The developers with toners of Examples I, II, and III were placed in three separate housings, respectively.
That is, the toner of Example I is placed in the first developer housing, the toner of Example II is placed in the second developer housing, and the toner of Example III is similar to the Xerox Corporation 5775 full process color machine. Placed in a third separate housing in the Xerox Corporation's Test Fuser, to produce a print or copy of the original document, and the Pacific Scientific Company's Glossguard Type II It was welded so as to have a gloss value of 63 as measured by using a gloss meter. The resulting print brightness and saturation of the color of the image provides a wide range of color gamuts, provided that the (toner above) combination of predispersed colorants or pigments as described in Example I provides , Each reproduced color was shown to have excellent hue (saturation) and fine resolution.

Example V Black toner was prepared as follows. It was carried out in a Warner & Fiddler ZSK-28 twin screw extruder at the following process conditions.
Barrel temperature distribution: 105/110/110/115/1
15/115/120 ° C, die head temperature: 140 ° C,
95 parts of the linear polyester resin of Example I and 5 parts of carbon black were used, with a screw speed of 250 rpm (revolutions per minute), and an average residence time of 6 pounds per hour at a processing speed of about 3 minutes. Regal 330
The mixture of (trade name) was mixed. The resulting mixture was cooled (room temperature to about 25 °), micronized and classified using conventional jet milling to an average volume median size of 7 μm. The obtained black color toner is 9
It contained 5 parts linear polyester resin and 5 parts carbon black. When this carbon black pigment is measured with a transmission electron microscope, the particle size is 0.01
μm.

(Example VI) Similar to Example IV, Example I
A number of full process color images were produced by the following combinations of toners II, III, III and V:

For each of the toners of Examples I, II, III and V,
A surface additive of 0.3% zinc stearate, 0.9% fumed silica, AEROSIL R972 ™, and 1.1% fumed titanium dioxide was blended and then the Examples IV Xerox Corporation carrier (65 μm Hoganese core coated with polymethylmethacrylate and carbon black) was mixed to produce four separate developer combinations.

These developers were placed in a test fusing apparatus similar to a Xerox Corporation 5775 full process color machine to produce prints and copies of the original document and manufactured by Pacific Scientific Glossguard II Glossmeter. And was welded so that the gloss value would be 63. The resulting print brightness and saturation of the image colors shows that the combination of the pre-dispersed colorant as described in Example I and the carbon black toner of Example V provides a wide range of color gamuts. It was In this embodiment, for example, red such as Pantone Warm Red C, blue such as Pantone ReflexBlue C, Pantone Green,
Yellows such as Pantone Yellow 12C, Yellow C were produced.

Example VII A yellow toner was prepared by repeating the procedure of Example I, substituting Pigment Yellow 17 for Pigment Blue 15: 3.

The resulting yellow color toner contained 96 parts linear polyester resin and 4 parts Pigment Yellow 17. When the pigment was measured by a transmission electron microscope, the particle size was 0.1 μm in average particle diameter.

Example VIII A number of full process color images were produced as follows by combining the toners of Examples I, II and VII.

Each of the toners of Examples I, II, and VII was blended with surface additives (0.3% zinc stearate, 0.9% fumed silica and 1.1% fumed titanium dioxide). , Then Xerox Corporation Carrier, Xerox part # F3C
-1 (65 μm Hoganese core coated with polymethylmethacrylate and carbon black) was mixed to produce three separate developers.

These developers were placed in a test fuser similar to a Xerox Corporation 5775 full process color machine to produce prints and measured using a Pacific Scientific Glossguard II gloss meter. And was welded so that the gloss value would be 63. Image of dark wine red, bright sky blue,
The resulting print brightness and saturation of colors such as grass are provided by the combination of predispersed colorants as described in Example I to provide a wide range of color gamuts, where
For example, the color of the print or copy was shown to be equal to the color intensity of the original, as determined by visual observation.

Example IX A full process color image was prepared as follows by combining the toners of Examples I, II, V and VII.

For each of the toners of Examples I, II, V and VII,
Surface additives (0.3% zinc stearate, 0.9% fumed silica and 1.1% fumed titanium dioxide) are blended and then Xerox Corporation carrier, Xerox part # F3C-1 (polyester). Methylmethacrylate and carbon black coated 65 μm Hoganese cores) were mixed to produce four separate developers.

These developers were placed in a test fixing device similar to a full process color machine of Xerox Corporation 5775, the originals were printed, and a gloss guard II gloss meter from Pacific Scientific was used. It was measured and welded so that the gloss value was 63. Depending on the resulting print brightness and saturation of the color of the developed image produced by Xerox Corporation 5775, by the combination of the predispersed colorant as described in Example I and the carbon black toner of Example V, A wide range of color gamuts are provided, including colors such as Pantone Rhodamine Red C, Pantone Red 032C, Pantone Rubin Red C, where the color of the print or copy is that of the original (original), as determined by visual observation, for example. It was shown to be equal to color brightness.

Example X A magenta toner was prepared by repeating the procedure of Example I, substituting Pigment Red 122 for Pigment Blue 15: 3.

The resulting magenta color toner contained 96 parts of linear polyester resin and 4 parts of Pigment Red 122. When the pigment was measured by a transmission electron microscope, the particle size was 0.1 μm in average particle diameter.

Example XI A number of full process color images were prepared as follows by combining the toners of Examples I, VII and X.

Surface additives (0.3% zinc stearate, 0.9% fumed silica and 1.1% fumed titanium dioxide) were added to each of the toners of Examples I, VII and X.
Xerox Corporation carrier, Xerox part # F3C-1 (polymethylmethacrylate and carbon black coated 6
5 μm Hoganese cores) were mixed to produce three separate developers.

These developers were placed in a Xerox full process color machine similar to Xerox Corporation 5775 to produce a print and the gloss value measured using a Pacific Scientific Glossguard II gloss meter. Was welded so that the number became 63. The print brightness and saturation of the color of the developed image are
A combination of predispersed colorants or pigments as described in I provides a wide gamut where the color of the print or copy is the original (original) color as determined, for example, by visual observation. It was shown to be equal to lightness.

Example XII A large number of over 1000 full process color images were recorded in Examples I, VII, X and V.
The above toners were combined and produced as follows.

For each of the toners of Examples I, VII, X and V,
Surface additives (0.3% zinc stearate, 0.9% fumed silica and 1.1% fumed titanium dioxide) were blended and coated with the above carrier (polymethylmethacrylate and carbon black) 65
The μm Hoganese cores were mixed to make four separate developers. Unless otherwise indicated, about 3 parts toner to about 97 parts carrier was selected for the developers shown in these examples.

These developers were placed in a prototype Xerox Corporation full process color machine, printed, and measured to a gloss value of 63 using a Pacific Scientific Glossguard II gloss meter to give a gloss value of 63. So welded. Depending on the resulting print brightness and saturation of the color of the developed image produced, a colorant pre-dispersed as described in Example I and Example V
The combination with the carbon black toner provides a wide gamut of black, red, yellow, blue, green and brown colors, where these colors are equal in resolution and color intensity to the original, It was shown that there were some cases where the original color was improved.

Example XIII The toners of Examples I, III and X were combined to produce a number of full process color images as follows.

Surface additives (0.3% zinc stearate, 0.9% fumed silica and 1.1% fumed titanium dioxide) were added to each of the toners of Examples I, III and X.
Was blended and mixed with the above Xerox Corporation carrier (polymethylmethacrylate and carbon black coated 65 μm Hoganese cores) to provide three separate developers.

These developers were placed on a prototype Xerox Corporation full process color machine to produce a large number of prints, eg about 1,000,
Pacific Scientific Gloss Guard II
It was welded so as to have a gloss value of 63 as measured by using a type gloss meter. The resulting print brightness and saturation of the image colors is provided with a wide gamut by the combination of predispersed colorants as described in Example I, where all colors of the original are reproduced. I showed that.

Example XIV Examples I, III, X and V
Was combined to produce a full process color image as follows. To each of the toners of Examples I, III, X and V, a surface additive (0.3% zinc stearate, 0.9%) was added.
% Fumed silica and 1.1% fumed titanium dioxide) and blended with 97 parts of the above Xerox carrier (65 μm Hoganese core coated with polymethylmethacrylate and carbon black) to give four separate developments. An agent was produced. Each developer was placed in a separate developer housing contained within a full process color test fusing machine.

These developers were placed in a prototype Xerox Corporation full process color test fusing machine to produce prints and gloss values measured using a Pacific Scientific Glossguard II gloss meter. Was welded so that the number became 63. The resulting print brightness and saturation of the color of the image is such that the combination of the predispersed colorant as described in Example I with the carbon black toner of Example V provides a wide color gamut, and Here we showed that all the original colors were reproduced.

Example XV A magenta toner was prepared by repeating the procedure of Example I, substituting Pigment Red 57: 1 for Pigment Blue 15: 3.

The resulting magenta color toner contained 96 parts linear polyester resin and 4 parts Pigment Red 57: 1. When the pigment was measured by a transmission electron microscope, the particle size was 0.1 μm in average particle diameter.

Example XVI The toners of Examples I, III and XV were combined to produce a number of full process color images as follows.

Surface additives (0.3% zinc stearate, 0.9% fumed silica and 1.1% fumed titanium dioxide) were added to the toners of Examples I, III and XV.
Xerox Corporation carrier, Xerox part # F3C-1 (polymethylmethacrylate and carbon black coated 6
5 μm Hoganese cores) were mixed to give three separate developers.

These developers were placed in a Xerox Corporation prototype full process color machine, printed, and measured to a gloss value of 63 using a Pacific Scientific Glossguard II gloss meter to give a gloss value of 63. So welded. The resulting print brightness and saturation of the image colors provided a wide gamut by the combination of predispersed colorants as described in Example I, where all the original colors were reproduced. I showed that. In this specification, “arranged (pl
aced) "means, for example, that different toners, Examples I, II, are provided in each separate developer housing of a full process color machine.
It shows that I and XV donors are respectively loaded. Here, each housing includes a carrier.

(Example XVII) Examples I, III, XV and V
A number of full process color images were produced as follows (all from originals).

To each of the toners of Examples I, III, XV and XV,
Surface additives (0.3% zinc stearate, 0.9% fumed silica and 1.1% fumed titanium dioxide) were blended and 97 parts Xerox Corporation carrier, Xerox part # F3C-1 (polyester). Methyl methacrylate and carbon black coated 65 μm Hoganese cores) are mixed to provide a combination or set of four separate developers.

These developers were placed on a Xerox Corporation prototype full-process color test machine (generally similar to Xerox Corporation 5775) to produce prints and manufactured by Pacific Scientific Glossguard II. It was welded so as to have a gloss value of 63 as measured by using a type gloss meter.
The resulting print brightness and saturation of the color of the developed image was provided by a combination of the predispersed colorant as described in Example I and the carbon black toner of Example V to provide a wide range of color gamut. , Here, showed that all the original colors were reproduced.

Example XVIII Examples I, VII, and XV
Toners were combined to produce a number of full process color images as follows.

The surface additives (0.3% zinc stearate, 0.9% fumed silica and 1.1% fumed titanium dioxide) were blended into each of the toners of Examples I, VII, and XV. , Xerox Corporation Carrier, Xerox Part # F3C-1 (65 coated with polymethylmethacrylate and carbon black
μm Hoganese cores) are mixed to produce three separate developers.

These developers were placed in a Xerox Corporation prototype full process color test machine to produce prints and the gloss values measured using a Pacific Scientific Glossguard II gloss meter. Welded to 63. The resulting print brightness and saturation of the color of the image is provided by a combination of predispersed colorants (resin and pigment colorant toner) as described in Example I, where a wide range of color gamuts is provided. , Showed that all the original colors were reproduced.

(Example XIX) Examples I, VII, XV and V
Multiple unmixed toners were combined to produce multiple full process color images as follows.

For each of the toners of Examples I, VII, XV and V,
Surface additives (0.3% zinc stearate, 0.9% fumed silica and 1.1% fumed titanium dioxide) were blended and combined with Xerox Corporation carrier, Xerox part # F3C-1 (with polymethylmethacrylate). 65 coated with carbon black
μm Hoganese cores) are mixed to produce four separate developers.

These developers were placed in a Xerox Corporation prototype full process color test machine to produce prints and the gloss values measured using a Pacific Scientific Glossguard II gloss meter. Welded to 63. The resulting print brightness and saturation of the colors in the image are provided by a combination of the predispersed colorant as described in Example I and the carbon black toner of Example V to provide a wide range of color gamuts, where , Showed that all colors of the original are reproduced.

EXAMPLE XX A number of full process color images were prepared in the following manner by combining the toners of Examples I, II, VII and V.

For each of the toners of Examples I, II, VII and V,
Surface additives (0.3% zinc stearate, 0.9% fumed silica and 1.1% fumed titanium dioxide) were blended and 97 parts Xerox Corporation carrier, Xerox part # F3C-1 (polyester). Methyl methacrylate and carbon black coated 65 μm Hoganese cores) were mixed to produce four separate developers.

These developers were placed in a test fixer similar to Xerox Corporation 5775 to produce a transparency and measured using a Pacific Scientific Glossguard II gloss meter. It was welded so that the gloss value was 69. The resulting brightness and saturation of the color of the image projected onto the overhead screen was very good with the combination of the predispersed colorant as described in Example I and the carbon black toner of Example V. Showed that it provided a bright, high density color.

Similarly, the inventive toner combinations set forth herein produce a number of full process color images, where the pigments are as specified,
It offers a wide gamut and reproduces all the different colors of the original. Reproduced colors include colors with full alignment or full color gamut, such as red, pink, green, brown, black, yellow, blue, light blue, dark blue, navy, light green, dark green, medium green, Hues such as light red, dark red, medium red, light black, dark black, medium black, gray, white, cream, orange, and combinations or mixtures of these colors. Therefore,
In a specific example, a Xerox Corporation 5775 test fusing device can be used to reproduce a wide variety of colors or gamuts from an original (original) that are equivalent to the original colors, with a particular combination of toner and developer of the present invention.

In an embodiment, for example, the large amount of toner on the image regulates the amount of pigment used, so it is not possible to select the dilution method presented herein for other pigment concentrations. Absent.

[0086]

Since the combination of the color toners of the present invention is configured as described above, it is possible to form colors having a wide range of color gamuts or shades of different colors, and have an improved high lightness color resolution. And, it has an excellent effect of having good electric friction characteristics.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Jack Scythe. Bertrand United States 14519 Ontario, New York Ontario Center Road 7253 (72) Inventor Thomas Earl. Picker Ring United States 14580 New York Webster Slashwood Lane 436 (72) Inventor Dennis Earl. Bayray United States 14450 Fairport Carter Road New York 2172

Claims (3)

[Claims] 1. A combination of four color toners for the development of an electrostatic latent image which enables formation of a full color gamut image,
The four toners are cyan toner, magenta toner,
A yellow toner, and a black toner, each of the toner is composed of a resin and a pigment, the pigment for the cyan toner is β-type copper phthalocyanine, the pigment for the magenta toner is monoazolitol rubin,
A combination of color toners, wherein the pigment for the yellow toner is diazobenzidine and the pigment for the black toner is carbon black. 2. The cyan, magenta, and yellow pigments each have a particle diameter size or agglomerated particle diameter size of about 0.01 μm to about 0.3 μm, and the black pigment is about 0.001 μm to about 0. Having a particle diameter size of 1 μm, the cyan, magenta, and yellow pigments are dispersed in the toner resin by flashing the cyan, magenta, or yellow pigments to form a cyan, magenta, or yellow pigment. The wet wet cake is mixed with a toner resin to remove the moisture to produce a pigment-containing resin containing from about 25 to about 50 weight percent pigment based on the weight percent of the toner resin and the pigment. The combination of color toners described in 1. 3. A cyan, magenta, or yellow pigment is flashed to disperse each of the cyan, magenta, or yellow pigments in the toner resin.
A water-containing wet cake of magenta or yellow pigment is mixed with the toner resin, and the water content is removed to produce a pigment-containing resin containing about 30 to about 40% by weight of pigment. The combination of color toners of claim 1, wherein each of the toners is mixed and diluted with additional toner resin to produce cyan, magenta, and yellow toners containing the cyan, magenta, or yellow pigments.