CN100355545C - Preparation of electronic imaging ink powder and ink particle spheroidizing apparatus - Google Patents
Preparation of electronic imaging ink powder and ink particle spheroidizing apparatus Download PDFInfo
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- CN100355545C CN100355545C CNB2003101062505A CN200310106250A CN100355545C CN 100355545 C CN100355545 C CN 100355545C CN B2003101062505 A CNB2003101062505 A CN B2003101062505A CN 200310106250 A CN200310106250 A CN 200310106250A CN 100355545 C CN100355545 C CN 100355545C
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Abstract
The present invention relates to a preparation technology of electronic imaging ink powder. Raw material mixture, compounding kneading and pulverization are adopted; after being boiled and shaped by hot wind, obtained particles with the particle diameter of 0.5 to 20 mu m are classified and modified on the surface. The present invention also relates to a spheroidizing apparatus of ink powder particles for making ink powder particles tend towards spheroidization. The lower part of an inner cavity of a cylinder is provided with a fluidized bed; the top is provided with a colliding wheel. The bottom of a cylinder body is provided with a cold wind inlet as well as a discharge port; the middle is provided with a tangential hot wind inlet. A feed port and a wind outlet are arranged on the upper part of the cylinder body, wherein the wind outlet is provided with a separator and a dust remover, and is connected with a draft fan by a pipeline. Because the particle shape of ink powder obtained by the preparation technology of the present invention is spheroidized, each ink powder particle has a small specific surface area. Consequently, each ink powder particle has the advantages of good fluxion performance, good weatherability and difficult agglomeration. Accordingly, the present invention relieves the load of classification equipment, enhances classification precision, relieves the abrasion of the ink powder particles on a photosensitive drum, a developing roller, a powder outlet knife, a powder scraping knife, a charge roller and a fixing film, and satisfies a requirement for high-speed printing or copying.
Description
Technical field
The present invention relates to a kind of toner particles spheroidization device.
Background technology
Known as laser printing, in the electronic imaging principle of digital duplicating, generally all be to utilize that light sensitive layer insulate at the dark place on the photosensitive drums, the characteristic of conduction when illumination is penetrated, charge at photosensitive drum surface in advance, need the position of imaging to make it with laser irradiation again and produce potential difference without irradiation place, " sub-image " that formation is made of electric charge, toner particles is magnetized under the effect of developer roll internal magnetic field thereby is attracted on the developer roll simultaneously, and seethe along with the rotation of developer roll sleeve and with the friction of powder delivery cutter thereby have static, these have suitably electrically, the toner particles of electric weight, the back pressure of being located by " sub-image " on the photosensitive drums (electrically opposite electric field) is adsorbed on and forms image on the photosensitive drums, be adsorbed on the paper by the bigger transfer electric field of intensity behind the paper again, after the fixing member pressurized, heated, be bonded on the paper, form printing.The residual toner that is not transferred is removed by doctor blade, enters waste powder hopper or comes back to the powder storehouse.
Mostly known ink powder preparation method is that fusion then, mixing kneading, coarse crushing, ultra-fine grinding, classification, surface modification are made ink powder with mixing such as binding resin, magnetic material, charge controling agent and additives at present.Chinese patent application number is 94119044.7, name is called the processing technology of mentioning ink powder in the application for a patent for invention prospectus of " xerography, insulated type, magnetic, dry type, one pack system, positive-charged developer ", take exactly adhering resin, magnetic material, charged conditioning agent etc. are mixed with high-speed mixer, with squash type mixing roll melting mixing, cooling then, compressing tablet, pulverizing, pulverize the sector-style power classification of going forward side by side with airslide disintegrating mill again, in the classification product, add external additive in 0.3% ratio at last and promptly add hydrophobic silica, fully mix getting final product.Adopt the ink powder real density≤1.4g/cm of above-mentioned technology preparation
3, grain shape is irregular, and specific area is big, easily reunites because of playing static, so effectiveness of classification is difficult to guarantee that the classifying equipoment load is high.And because of sharp-pointed part is arranged in the constitution, thereby be difficult to make the triboelectrification property retention unanimity of ink powder, thereby and make particle be easy to reunite to have reduced the free-running property of ink powder, and then influence the weatherability of ink powder and print quality such as image density, bottom ash, resolving power, uniformity degree of image, can not adapt to flying print or duplicate the needs of process at a high speed.And can cause more serious wearing and tearing to photosensitive drums, magnetic roller, powder delivery cutter, doctor blade, charging roller, photographic fixing film.Because toner particles agglomeration temperature≤60 ℃, intensity difference, particle also must keep certain electromagnetic performance in addition, so very difficultly improve grain shape with conventional shaping methods such as impact, grinding, solvent surface dissolutions.
Summary of the invention
The object of the present invention is to provide a kind of particle spheroidization device that makes the electronic imaging ink powder that toner particles is tending towards spheroidization.
For achieving the above object, the cylinder lumen bottom of device proposed by the invention is that fluid bed, top are provided with the collision wheel; The bottom of cylindrical shell is provided with the cold wind import, and the cold wind import also is a discharging opening, and the middle part is provided with tangential hot blast import, and charging aperture and air outlet are arranged on the top of cylindrical shell, and wherein air outlet is provided with separator and is connected with air-introduced machine with deduster and by pipeline.
Above-mentioned collision wheel is squirrel-cage collision wheel, and separator is a whirlwind separator, and deduster is a fiber bag precipitator.
The rotating speed of above-mentioned collision wheel is at 400～5000 rev/mins.
Simple by toner particles spheroidization apparatus structure provided by the present invention, invest low.The present invention with better simply technology and device solves the manufacturing of flying print or photocopy toner, and the cost of ink powder is low.
Description of drawings
Fig. 1 is preparation technology's flow chart;
Fig. 2 is a toner particles spheroidization apparatus structure diagrammatic sketch.
The specific embodiment
Embodiment 1
Binding resin, magnetic material, charge controling agent are respectively styrene-butyl acrylate copolymer, ferroferric oxide powder, salicylic acid metal complex, and additive can be polyethylene low-molecular-weight wax, carbon black or polypropylene wax.Present embodiment is by 55 ℃～75 ℃ of 58 parts of vitrification points; styrene-butyl acrylate copolymer that softening point is 102 ℃～200 ℃; the ferroferric oxide powder of 38 parts of particle diameter≤1 μ m; 1 part of salicylic acid metal complex; 3 parts of raw materials that the polyethylene low-molecular-weight wax blendes together; mixing on high-speed mixer; use the parallel dual-screw mixing roll mixing again; mediate; and with hot cut pellet machine or cold pelleter or tablet press machine granulation of pair roller type crawler belt or sheet; pulverize roughly with beater disintegrating machine; use the ultra-fine grinding of collision type fluidized bed air flow crusher then; obtain the particulate of particle diameter, carry out particle shaping by toner particles spheroidization device at 0.5～20 μ m.Toner particles spheroidization device shown in Figure 2 is the fluid bed heater, its cylinder lumen bottom is that fluid bed 1-1, top are provided with collision wheel 2, the rotating speed of collision wheel is at 400～5000 rev/mins, the rotating speed of collision wheel is slow excessively, efficient is low, too high as rotating speed, particle crashes easily, so generally select 2500～5000 to change; It also is discharging opening 1-2 simultaneously that the bottom of cylindrical shell 1 is provided with the cold wind import, the middle part is provided with tangential hot blast import 1-3, charging aperture 1-4 and air outlet 1-5 are arranged on the top of cylindrical shell, and wherein air outlet 1-5 is provided with cyclone separator 3 and sack cleaner 4 and is connected with air-introduced machine 6 by pipeline 2.Present embodiment control fluidisation concentration 60g/ liter, 95 ℃ of hot blast temperatures, flow 32m
3/ minute, 3600 rev/mins of the rotating speeds of collision wheel, the spheroidization particle that obtains is used the inertia force classifier classification again, and the following granule content of 4 μ m of classification gained is no more than 3% powder, with conventional surface modifier such as hydrophobic silica modification, promptly get the ink powder finished product.Conventional surface modifier can be the nanoscale surface modifier.
Toner particles spheroidization device operation principle is as follows: powder is subjected to blowing holder from the cold wind that cold wind import department enters and rises and fluidisation in dropping process, the hot blast heating that is subjected to again after the fluidisation tangentially entering, the sharp-pointed part melted by heating in the constitution also is punctured into non-sharp-pointed structure to geometric center.Rise to the effect of falling to promptly being subjected to tangential hot blast behind the bump that is subjected to high velocity impact wheel when particle, fall along the rotation of body inwall.Owing to be subjected to the cooling of cold air after falling under the hot blast import, occur so there is no mutual adhesion phenomenon.To discharging opening, be spheroidization, there is not the particle of sharp-pointed structure.The negative pressure that the fine grained excessively of avalanche is then produced by air-introduced machine in this process is drawn to cyclone separator and separates.Fail by then collecting that cyclone separator separates by sack cleaner.
Embodiment 2
With 58 parts of styrene-butyl acrylate copolymer, 38 parts of particle diameters ferrite powder, 1 part of salicylic acid metal complex, 3 parts of polyethylene low-molecular-weight wax below 1 μ m, through mixing, mixing kneading, pulverizing, particle shaping, classification, modification obtains ink powder.Control fluidisation concentration 80g/ liter, 95 ℃ of hot blast temperatures, flow 32m during particle shaping
3/ minute, 3600 rev/mins of wheel speeds of collision.
Embodiment 3
With ferrite powder below 1 μ m of 58 parts of styrene-butyl acrylate copolymer, 38 parts of particle diameters, the raw material of 1 part of salicylic acid metal complex, 3 parts of polyethylene low-molecular-weight wax, through mixing, mixing kneading, pulverizing, particle shaping, classification, modification obtains ink powder.Control fluidisation concentration 40g/ liter, 80 ℃ of hot blast temperatures, flow 32m during particle shaping
3/ minute, 3600 rev/mins of wheel speeds of collision.
Embodiment 4
With 58 parts of styrene-butyl acrylate copolymer, 38 parts of particle diameters ferrite powder, 1 part of salicylic acid metal complex, 3 parts of polyethylene low-molecular-weight wax below 1 μ m, through mixing, mixing kneading, pulverizing, particle shaping, classification, modification obtains ink powder.Control fluidisation concentration 60g/ liter, 95 ℃ of hot blast temperatures, flow 32m during particle shaping
3/ minute, 2700 rev/mins of wheel speeds of collision.
Embodiment 5
With 58 parts of styrene-butyl acrylate copolymer, 38 parts of particle diameters ferrite powder, 1 part of salicylic acid metal complex, 3 parts of polyethylene low-molecular-weight wax below 1 μ m, through mixing, mixing kneading, pulverizing, particle shaping, classification, modification obtains ink powder.Control fluidisation concentration 60g/ liter, 95 ℃ of hot blast temperatures, flow 32m during particle shaping
3/ minute, 4500 rev/mins of wheel speeds of collision.
The proportioning of ink powder component in the foregoing description can change according to the proportioning of prior art ink powder component.
Claims (3)
1, a kind of particle spheroidization device of electronic imaging ink powder is characterized in that: the cylindrical shell of this device (1) inner chamber bottom is that fluid bed (1-1), top are provided with collision wheel (2); It also is discharging opening (1-2) that the bottom of cylindrical shell (1) is provided with the cold wind import, the middle part is provided with tangential hot blast import (1-3), charging aperture (1-4) and air outlet (1-5) are arranged on the top of cylindrical shell, and wherein air-out (1-5) is provided with separator (3) and also is connected with air-introduced machine (6) by pipeline (2) with deduster (4).
2, the particle spheroidization device of electronic imaging ink powder according to claim 1 is characterized in that: collision wheel (2) is squirrel-cage collision wheel, and separator (3) is a whirlwind separator, and deduster (4) is a fiber bag precipitator.
3, the particle spheroidization device of electronic imaging ink powder according to claim 2 is characterized in that: the rotating speed of collision wheel is 400～5000 rev/mins of per minutes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101062505A CN100355545C (en) | 2003-11-07 | 2003-11-07 | Preparation of electronic imaging ink powder and ink particle spheroidizing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101062505A CN100355545C (en) | 2003-11-07 | 2003-11-07 | Preparation of electronic imaging ink powder and ink particle spheroidizing apparatus |
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| CN1614517A CN1614517A (en) | 2005-05-11 |
| CN100355545C true CN100355545C (en) | 2007-12-19 |
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| CNB2003101062505A Expired - Fee Related CN100355545C (en) | 2003-11-07 | 2003-11-07 | Preparation of electronic imaging ink powder and ink particle spheroidizing apparatus |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5010337B2 (en) * | 2006-06-30 | 2012-08-29 | 株式会社リコー | Toner production method |
| CN105500552A (en) * | 2016-02-16 | 2016-04-20 | 黄利文 | Chemical device for efficiently preparing resin particles |
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| JPS5441961A (en) * | 1977-09-09 | 1979-04-03 | Toshiba Corp | Sphering of thermoplastic particles |
| JPS5685756A (en) * | 1979-12-14 | 1981-07-13 | Sakata Shokai Ltd | Pressure fixing magnetic toner composition and its manufacture |
| JPS59127662A (en) * | 1982-12-31 | 1984-07-23 | Konishiroku Photo Ind Co Ltd | Method and apparatus for treating powder or particles |
| CN1246659A (en) * | 1998-06-25 | 2000-03-08 | 松下电器产业株式会社 | Toner and manufacture method thereof |
| CN1276542A (en) * | 1999-06-02 | 2000-12-13 | 佳能株式会社 | Toner and imaging method |
| CN1337602A (en) * | 2000-04-24 | 2002-02-27 | 精工爱普生株式会社 | Dry toner and producing method thereof |
| CN1338664A (en) * | 2000-07-28 | 2002-03-06 | 佳能株式会社 | Magnetic color tuner |
| US6459874B2 (en) * | 2000-02-14 | 2002-10-01 | Minolta Co., Ltd. | Developing system for forming a full-color image |
| CN1420393A (en) * | 2001-07-11 | 2003-05-28 | 精工爱普生株式会社 | Mono-component non-magnetic toner, its mfg. method and image forming device using same |
| CN1445616A (en) * | 2002-03-15 | 2003-10-01 | 精工爱普生株式会社 | Method for preparing toner and toner and printed matter |
-
2003
- 2003-11-07 CN CNB2003101062505A patent/CN100355545C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5441961A (en) * | 1977-09-09 | 1979-04-03 | Toshiba Corp | Sphering of thermoplastic particles |
| JPS5685756A (en) * | 1979-12-14 | 1981-07-13 | Sakata Shokai Ltd | Pressure fixing magnetic toner composition and its manufacture |
| JPS59127662A (en) * | 1982-12-31 | 1984-07-23 | Konishiroku Photo Ind Co Ltd | Method and apparatus for treating powder or particles |
| CN1246659A (en) * | 1998-06-25 | 2000-03-08 | 松下电器产业株式会社 | Toner and manufacture method thereof |
| CN1276542A (en) * | 1999-06-02 | 2000-12-13 | 佳能株式会社 | Toner and imaging method |
| US6459874B2 (en) * | 2000-02-14 | 2002-10-01 | Minolta Co., Ltd. | Developing system for forming a full-color image |
| CN1337602A (en) * | 2000-04-24 | 2002-02-27 | 精工爱普生株式会社 | Dry toner and producing method thereof |
| CN1338664A (en) * | 2000-07-28 | 2002-03-06 | 佳能株式会社 | Magnetic color tuner |
| CN1420393A (en) * | 2001-07-11 | 2003-05-28 | 精工爱普生株式会社 | Mono-component non-magnetic toner, its mfg. method and image forming device using same |
| CN1445616A (en) * | 2002-03-15 | 2003-10-01 | 精工爱普生株式会社 | Method for preparing toner and toner and printed matter |
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| CN1614517A (en) | 2005-05-11 |
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Granted publication date: 20071219 Termination date: 20131107 |