CN102621835B

CN102621835B - Cyan toner for color electrostatic development and method for preparing cyan toner

Info

Publication number: CN102621835B
Application number: CN201210085394.6A
Authority: CN
Inventors: 高军; 周建兴; 朱决
Original assignee: Nanjing Teshine Imaging Technologies Co ltd
Current assignee: Nanjing Teshine Imaging Technologies Co ltd
Priority date: 2012-03-28
Filing date: 2012-03-28
Publication date: 2015-03-25
Anticipated expiration: 2032-03-28
Also published as: CN102621835A

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

The color static development preparation method of cyan color tone agent

Technical field

The present invention relates to a kind of color static development cyan color tone agent and preparation method thereof, belong to developer technical field.

Background technology

Along with the change of information processing quantity and demand, the digitizing of xerox, printing, high speed, colorize have become a kind of trend, and the day by day universal of colorize makes the use amount of colour development toner increase fast.The run-of-the-mill of color toner requires it is that uniform in color is pure, colour cast, grain diameter are relatively little etc., to meet high-resolution requirement.

Meanwhile, the design of xerox system equipment requires higher to transferring rate, thus needs grain graininess homogeneous and Form Sphere degree is high.The manufacture of color toner, a kind of is traditional physical crushing method, and one is chemical method.The former is mainly applied in the preparation of conventional black toner, technical maturity, cost are lower, but show mixing dispersion difference when preparing colour development toner, after crushing and classification, particle size is not easy homogeneous and sphericity not high (sphericity is generally 0.92 ~ 0.94); The latter preferably resolves dispersed and particle homogeneity and shape subglobular requirement, but research and development manufacture at the bottom of higher, one-pass finished rate, environmental protection treatment complexity and cost is high.Colour development system is in addition due to the requirement to color, and the general component content of wax that uses is higher, and its dispersion requires very high.Red tone agent, when using conventional physical comminuting method, is easy to dispersion and badly causes colour cast, also can cause because article shape is bad that consumption at the bottom of transferring rate is large, Long-Time Service produces too much useless powder and can pollute that machine impact is normal to be used.

Summary of the invention

The invention provides the agent of a kind of color static development cyan color tone, effectively solve toner and disperse uneven, the problem of shape of particle spheroidization, make particle carried charge homogeneous, permanance and good fluidity, reduce costs.

The present invention is realized by following technical scheme:

Red tone agent is used in a kind of color static development, is be made up of the raw material of following parts by weight: 85 ~ 95 parts, vibrin, 3 ~ 6 parts, wax, green pigment 2 ~ 5 parts, charge control agent 1 ~ 3 part, aerosil 1 ~ 3 part, titania 0.5 ~ 2 part.

Preparation method of the present invention is as follows:

Premixed: above-mentioned 85 ~ 95 parts, the material vibrin measured, 3 ~ 6 parts, wax, green pigment 2 ~ 5 parts, charge control agent 1 ~ 3 part are dropped into together high-speed mixer and mix, first mixed on low speed 30 seconds, then turns 90 seconds at a high speed, pauses 60 seconds; Repeat above step twice again, intermediate hold one 60 seconds;

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

Cooling: above-mentioned extruded material is cooled by the calendering of pair roller water cooling steel band and is broken for sheet material;

Coarse crushing: above-mentioned sheet material is put into Roughpulverizer and pulverizes, crushing rear material size controlling is at 0.8 ~ 1.2mm;

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

Micro-powder graded: the material after above-mentioned pulverizing is carried out classification, remove underproof granule part, make raw meal particle size control at 5 ~ 6 μm, volume median D50 μm;

Pre-outer add mixing: by aforementioned split pole material with drop in high-speed mixer together with its weight percent meter measured additive aerosil (German EVONIK system: R972), first mixed on low speed 30 seconds, then turn 60 seconds at a high speed, pause 60 seconds; Repeat above step twice again, intermediate hold one 60 seconds;

Spheroidization process: above product is carried out surperficial spheroidization process by micro mist surface modification treatment machine (Japanese NIPPON PNEUMATIC MFG.CO., LTD. manufacture, MR-10A type), and sphericity controls 0.95 ~ 0.97;

Outer interpolation mixing: the material of aforementioned spheroidization process is dropped in high-speed mixer with pressing together with its weight percent meter measured additive aerosil (U.S. Cabot system: TG-810F), large granular silicon dioxide (U.S. Cabot system: TG-C6020) and titania (German EVONIK system: NKT90), first mixed on low speed 30 seconds, then turn 30 seconds at a high speed, pause 60 seconds; Repeat above step twice again, intermediate hold one 60 seconds;

Sieve: use sieve shaker (screen cloth 140 order) to sieve the above-mentioned material mixed;

Packaging: the material above-mentioned mistake be sieved is by appointment specification packaging.

Described mixing to comprise four regions mixing, and temperature is respectively: 45 DEG C, 140 DEG C, 18 DEG C and 50 DEG C.

Beneficial effect of the present invention is: compared with conventional physical comminuting method, continous way mixing roll is adopted to substitute batch mixers or extruder equipment, increase spheroidization treatment facility, process route adds outside premixed and add and spheroidization treatment process, effectively solve and disperse problem that is uneven, shape of particle spheroidization (sphericity reaches 0.96 ~ 0.98).By the change to traditional handicraft, reach and produce the same effect with chemical method, particle carried charge is homogeneous, permanance and good fluidity, considerably reduce manufacturing cost simultaneously.

Embodiment

Below in conjunction with embodiment, the invention will be further described.

Embodiment 1

Composition:

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

3.2 parts, wax (Japanese oil chemistry NOF system: WE-3);

Green pigment 5 parts (Japanese Japan chemistry TOYO CHEM system: LIONOGEN LX-8090, PB15:3);

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

Aerosil 1 part (adding mixing outside pre-: 0.5 part, outer interpolation mixing: 0.5 part);

Titania 0.5 part (German EVONIK system: NKT90).

Embodiment 2

Composition:

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

4.5 parts, wax (Japanese oil chemistry NOF system: WE-3);

Green pigment 2 parts (Japanese Japan chemistry TOYO CHEM system: LIONOGEN LX-8090, PB15:3);

Charge control agent 3 parts (German Clariant Clariant system, Copy Charge N4P);

Aerosil 2 parts (adding mixing outside pre-: 1 part, outer interpolation mixing: 1 part);

Titania 1.2 parts (German EVONIK system: NKT90).

Embodiment 3

Composition:

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

6 parts, wax (Japanese oil chemistry NOF system: WE-3);

Green pigment 3 parts (Japanese Japan chemistry TOYO CHEM system: LIONOGEN LX-8090, PB15:3);

Charge control agent 2 parts (German Clariant Clariant system, Copy Charge N4P);

Aerosil 3 parts (adding mixing outside pre-: 2 parts, outer interpolation mixing: 1 part);

Titania 1.8 parts (German EVONIK system: NKT90).

Preparation: the composition of above-described embodiment 1 ~ 3 is prepared.

Test: above product uses on Hewlett-Packard (HP C1215) color laser printer, color and image effect and genuine completely the same; Continuous printing 10,000 pages, image density keeps stable, occurs without other abnormal occurrencies.

Claims

1. a color static development preparation method for cyan color tone agent, is characterized in that: the raw material that this cyan color tone agent comprises following parts by weight is made: 85 ~ 95 parts, vibrin, 3 ~ 6 parts, wax, green pigment 2 ~ 5 parts, charge control agent 1 ~ 3 part, aerosil 1 ~ 3 part, titania 0.5 ~ 2 part;

The preparation method of this color static development cyan color tone agent is realized by following steps:

Premixed: above-mentioned 85 ~ 95 parts, the material vibrin measured, 3 ~ 6 parts, wax, green pigment 2 ~ 5 parts, charge control agent 1 ~ 3 part are dropped into together high-speed mixer and mix, first mixed on low speed 30 seconds, then turn 90 seconds at a high speed, pause 60 seconds; Repeat above step twice again, intermediate hold one 60 seconds;

Mixing: the material got togather by above-mentioned premix is by continous way mixing roll mixing extrusion;

Micro-powder graded: the material after above-mentioned pulverizing is carried out classification, remove underproof granule part, make raw meal particle size control at 5 ~ 6 μm, volume median is 50 μm;

Pre-outer add mixing: by aforementioned point of stage material with drop in high-speed mixer together with the measured additive aerosil of its weight percent meter, first mixed on low speed 30 seconds, then turns 60 seconds at a high speed, pauses 60 seconds; Repeat above step twice again, intermediate hold one 60 seconds;

Spheroidization process: above product is carried out surperficial spheroidization process by micro mist surface modification treatment machine, and sphericity controls 0.95 ~ 0.97;

Outer interpolation mixing: by the material of aforementioned spheroidization process with drop into together with titania in high-speed mixer by the measured additive aerosil of its weight percent meter, large granular silicon dioxide, first mixed on low speed 30 seconds, then turn 30 seconds at a high speed, pause 60 seconds; Repeat above step twice again, intermediate hold one 60 seconds;

Sieve: the above-mentioned material mixed is used sieve shaker, and screen cloth 140 order sieves;

Packaging: the material above-mentioned mistake be sieved is by appointment specification packaging;

Wherein, described large granular silicon dioxide is U.S. Cabot system: TG-C6020; Described mixing to comprise four regions mixing, and temperature is respectively: 45 DEG C, 140 DEG C, 18 DEG C and 50 DEG C;

Wherein, the described pre-outer aerosil adding mixing is German EVONIK system: R972; The described outer aerosil adding mixing is U.S. Cabot system: TG-810F; Described titania is German EVONIK system: NKT90.