CN102621835A

CN102621835A - Cyan toner for color electrostatic development and method for preparing cyan toner

Info

Publication number: CN102621835A
Application number: CN2012100853946A
Authority: CN
Inventors: 高军; 周建兴; 朱决
Original assignee: NANJING NEW TIANXING IMAGING TECHNOLOGIES Co Ltd
Current assignee: NANJING NEW TIANXING IMAGING TECHNOLOGIES Co Ltd
Priority date: 2012-03-28
Filing date: 2012-03-28
Publication date: 2012-08-01
Anticipated expiration: 2032-03-28
Also published as: CN102621835B

Abstract

The invention discloses a cyan toner for color electrostatic development and a method for preparing the cyan toner. The cyan toner is prepared by raw materials including, by weight, from 85 to 95 parts of polyester resin, from 3 to 6 parts of wax, from 2 to 5 parts of cyan pigment, from 1 to 3 parts of charge control agent, from 1 to 3 parts of fumed silica and from 0.5 to 2 parts of titanium dioxide. The method includes sequentially realizing pre-mixing, milling in a mixed manner, cooling, coarse crushing, airflow crushing and classifying, micro-powder classifying, preliminary addition mixing, spheroidization treatment and subsequent addition mixing for the materials; and finally preparing a toner product by means of sieving and packaging. Compared with a traditional physical crushing method, the method is realized by the aid of a continuous mixing mill instead of an intermittent banbury mixer or extruder equipment, a spheroidization treatment equipment is additionally required, preliminary addition mixing and spheroidization treatment procedures are added onto a process route, and the problems of uneven dispersion and spherical particles are effectively solved.

Description

Color static develops with cyan toner and preparation method thereof

Technical field

The present invention relates to a kind of color static and develop, belong to the developer technical field with cyan toner and preparation method thereof.

Background technology

Along with the variation of information processing quantity and demand, the digitizing of xerox, printing, high speed, colorize have become a kind of trend, and popularizing day by day of colorize makes colour development increase fast with the use amount of toner.It is that color is evenly pure, colour cast, grain diameter are less relatively etc., to satisfy high-resolution requirement that the run-of-the-mill of color toner requires.

Simultaneously, in the design of xerox system equipment transferring rate is had relatively high expectations, thereby need grain graininess homogeneous and shape sphericity height.The manufacturing of color toner, a kind of is traditional physical crushing method, a kind of is chemical method.The former is applied in the preparation of conventional black toner; Technical maturity, cost are lower; But when preparing colour development with toner, show mixing bad dispersibility, particle size is not easy homogeneous and sphericity not high (sphericity is generally 0.92～0.94) behind the crushing and classification; The latter preferably resolves requirement dispersed and particle homogeneity and shape subglobular, but that research and development are made is higher, at the bottom of the one-pass finished rate, environmental protection treatment complicacy and cost height.Colour development system in addition generally uses the component content of wax higher owing to the requirement to color, and it disperses to require very high.The red tone agent is easy to disperse the bad colour cast that causes when using the conventional physical comminuting method, also can cause owing to article shape is bad at the bottom of the transferring rate and big, the long-term use of consumption produces too much useless powder and can pollute that the machine influence is normal to be used.

Summary of the invention

The present invention provides a kind of color static to develop and use the cyan toner, and it is inhomogeneous effectively to solve the toner dispersion, and the problem of shape of particle spheroidization makes particle carried charge homogeneous, and permanance and good fluidity reduce cost.

The present invention is realized by following technical scheme:

A kind of color static develops and uses the red tone agent, is to be processed by the raw material of following parts by weight: 85～95 parts in vibrin, 3～6 parts in wax, 2～5 parts of green pigments, 1～3 part of charge control agent, 1～3 part of aerosil, 0.5～2 part of titania.

Preparation method of the present invention is following:

Premixed: 85～95 parts in the above-mentioned material vibrin that has measured, 3～6 parts in wax, 2～5 parts of green pigments, charge control agent are dropped into high-speed mixer for 1～3 part together mix, at first mixed on low speed is 30 seconds, then changes 90 seconds at a high speed, pauses 60 seconds; Repeat above step twice again, middle pause one 60 seconds;

Mixing: that the material that above-mentioned premix gets togather is mixing through KNEADEX continous way mixing roll (Japanese NIPPON COKE&ENGINEERING CO., LTD. makes, the MOS240 type);

Cooling: above-mentioned extruded material is through pair roller water cooling steel band calendering cooling and be broken for sheet material;

Coarse crushing: above-mentioned sheet material is put into Roughpulverizer pulverize, the crushing rear material particle diameter is controlled at 0.8～1.2mm;

Jet mill grinding: the material that above-mentioned coarse crushing is good is inserted the jet mill grinding machine and is pulverized, the oarse-grained content of major control;

Micro-powder graded: as the material after the above-mentioned pulverizing to be carried out classification, remove underproof granule part, make raw meal particle size be controlled at 5～6 μ m, D50 μ m in footpath in the volume;

In advance outer the interpolation mixes: with aforementioned split pole material with (German EVONIK system: R972) drop in the high-speed mixer, at first mixed on low speed is 30 seconds, and then commentaries on classics high speed 60 seconds was paused 60 seconds by the measured additive aerosil of its weight percent meter; Repeat above step twice again, middle pause one 60 seconds;

Spheroidization is handled: above product is carried out surperficial spheroidization through micro mist surface modification treatment machine (Japanese NIPPON PNEUMATIC MFG.CO., LTD. makes, the MR-10A type) handle, sphericity is controlled at 0.95～0.97;

The outer interpolation mixes: the material that aforementioned spheroidization is handled is with by the measured additive aerosil of its weight percent meter (U.S. Cabot system: TG-810F), large granular silicon dioxide (U.S. Cabot system: TG-C6020) and titania (German EVONIK system: NKT90) drop in the high-speed mixer; At first mixed on low speed is 30 seconds; Then changeed 30 seconds at a high speed, paused 60 seconds; Repeat above step twice again, middle pause one 60 seconds;

Sieve: use sieve shaker (screen cloth 140 orders) to sieve the above-mentioned material that mixes;

Packing: the above-mentioned material that sieves is packed by the appointment specification.

Saidly mixingly comprise that four zones are mixing, temperature is respectively: 45 ℃, 140 ℃, 18 ℃ and 50 ℃.

Beneficial effect of the present invention is: compare with the conventional physical comminuting method; Adopt the continous way mixing roll to substitute batch (-type) Banbury mixer or extruder equipment; Increase the spheroidization treatment facility; Increased premixed on the process route and added outward and the spheroidization treatment process, effectively solved and disperseed problem inhomogeneous, shape of particle spheroidization (sphericity reaches 0.96～0.98).Through change to traditional handicraft, reach the effect the same with chemical method production, particle carried charge homogeneous, permanance and good fluidity have reduced manufacturing cost simultaneously significantly.

Embodiment

Below in conjunction with embodiment, the present invention is described further.

Embodiment 1

Composition:

91 parts in vibrin (the beautiful sun of Mitsubishi);

3.2 parts of (Japanese oil chemistry NOF systems: WE-3) of wax;

5 parts of green pigments (Japanese Japan chemistry TOYO CHEM system: LIONOGEN LX-8090, PB15:3);

1 part of charge control agent (German Clariant Clariant system, Copy Charge N4P);

1 part of aerosil (add outside preparatory and mix: 0.5 part, outer interpolation mixing: 0.5 part);

0.5 part of (German EVONIK system: NKT90) of titania.

Embodiment 2

Composition:

85 parts in vibrin (the beautiful sun of Mitsubishi);

4.5 parts of (Japanese oil chemistry NOF systems: WE-3) of wax;

2 parts of green pigments (Japanese Japan chemistry TOYO CHEM system: LIONOGEN LX-8090, PB15:3);

3 parts of charge control agents (German Clariant Clariant system, Copy Charge N4P);

2 parts of aerosils (add outside preparatory and mix: 1 part, outer interpolation mixing: 1 part);

1.2 parts of (German EVONIK systems: NKT90) of titania.

Embodiment 3

Composition:

88 parts in vibrin (the beautiful sun of Mitsubishi);

6 parts of (Japanese oil chemistry NOF systems: WE-3) of wax;

3 parts of green pigments (Japanese Japan chemistry TOYO CHEM system: LIONOGEN LX-8090, PB15:3);

2 parts of charge control agents (German Clariant Clariant system, Copy Charge N4P);

3 parts of aerosils (add outside preparatory and mix: 2 parts, outer interpolation mixing: 1 part);

1.8 parts of (German EVONIK systems: NKT90) of titania.

Preparation: the composition of the foregoing description 1～3 is prepared.

Test: above product uses on Hewlett-Packard (HP C1215) color laser printer, and color and image effect and former factory are in full accord; Print 10,000 pages continuously, it is stable that image density keeps, and do not have other abnormal occurrencies and occur.

Claims

1. a color static develops and uses the cyan toner, it is characterized in that it being that raw material by following parts by weight is processed: 85～95 parts in vibrin, 3～6 parts in wax, 2～5 parts of green pigments, 1～3 part of charge control agent, 1～3 part of aerosil, 0.5～2 part of titania.

2. a color static develops with the preparation method of cyan toner, it is characterized in that being through following step realization:

Premixed: 85～95 parts in the above-mentioned material vibrin that has measured, 3～6 parts in wax, 2～5 parts of red pigments, charge control agent are dropped into high-speed mixer for 1～3 part together mix, at first mixed on low speed is 30 seconds, then changes 90 seconds at a high speed, pauses 60 seconds; Repeat above step twice again, middle pause one 60 seconds;

Mixing: that the material that above-mentioned premix gets togather is mixing through the continous way mixing roll;

Outer in advance the interpolation mixes: with dropping in the high-speed mixer by the measured additive aerosil of its weight percent meter, at first mixed on low speed is 30 seconds with aforementioned split pole material, then changes 60 seconds at a high speed, pauses 60 seconds; Repeat above step twice again, middle pause one 60 seconds;

Spheroidization is handled: above product is carried out surperficial spheroidization through micro mist surface modification treatment machine handle, sphericity is controlled at 0.95～0.97;

The outer interpolation mixes: the material that aforementioned spheroidization is handled is with dropping in the high-speed mixer by the measured additive aerosil of its weight percent meter, large granular silicon dioxide and titania; At first mixed on low speed is 30 seconds; Then changeed 30 seconds at a high speed, paused 60 seconds; Repeat above step twice again, middle pause one 60 seconds;

Sieve: the above-mentioned material that mixes is used sieve shaker, and screen cloth 140 orders sieve;

3. color static as claimed in claim 2 develops with the preparation method of cyan toner, it is characterized in that saidly mixingly comprising that four zones are mixing, and temperature is respectively: 45 ℃, 140 ℃, 18 ℃ and 50 ℃.

4. color static as claimed in claim 2 develops with the preparation method of cyan toner, it is characterized in that the said outer in advance aerosil that adds mixing is German EVONIK system: R972; The said outer aerosil that adds mixing is U.S. Cabot system: TG-810F.

5. color static as claimed in claim 2 develops with the preparation method of red tone agent, it is characterized in that said large granular silicon dioxide is U.S. Cabot system: TG-C6020.

6. color static as claimed in claim 2 develops with the preparation method of red tone agent, it is characterized in that said titania is German EVONIK system: NKT90.