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CN102063029A - Electrostatic dry single-component electronegative toner for laser printer - Google Patents

Electrostatic dry single-component electronegative toner for laser printer Download PDF

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Publication number
CN102063029A
CN102063029A CN2009102282887A CN200910228288A CN102063029A CN 102063029 A CN102063029 A CN 102063029A CN 2009102282887 A CN2009102282887 A CN 2009102282887A CN 200910228288 A CN200910228288 A CN 200910228288A CN 102063029 A CN102063029 A CN 102063029A
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CN
China
Prior art keywords
laser printer
component
magnetic material
ink powder
electronegativity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2009102282887A
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Chinese (zh)
Inventor
姜真
韩立胜
王金平
李美英
张明熠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN ZHONGHUAN TCOA ELECTRONICS CO Ltd
Original Assignee
TIANJIN ZHONGHUAN TCOA ELECTRONICS CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN2009102282887A priority Critical patent/CN102063029A/en
Publication of CN102063029A publication Critical patent/CN102063029A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a magnetic developer, in particular to a toner used for a laser printer, which comprises components such as an adhesive resin, a magnetic material, a charge controlling agent, an internal additive and an external additive, wherein the main component adhesive resin adopts a styrene-butyl acrylate-butyl maleate terpolymer with the polymerization rate of 60:30:10, the melt index MI of 1.6 to 2.6 and the varnish viscosity of 140 to 380 CP; and the magnetic material adopts iron oxide or ferrite, and has the average particle size of 0.1 to 5 mu m, the coercive force of 20 to 1500 e, the saturation magnetization of 50 to 200 emv/g and the bulk density of 1.0 to 1.6 g/cm<3>. Novel schemes for material selection and proportioning are provided by the invention, and iron phthalocyanine is added. The toner produced by the invention ensures high image concentration, high resolution, high image definition, high fineness and non-adhesion of lines, non-adhesion to a fuser film and less abrasion to a photosensitive drum when used for the high-speed laser printer, and is particularly applied to the filling of a reusable cartridge of the high-speed laser printer.

Description

Static dry type one-component electronegativity ink powder of laser printer
Technical field
The present invention relates to a kind of magnetic developer, particularly a kind of static dry type one-component electronegativity ink powder of laser printer.
Background technology
In the existing developer manufacturing technology, the ink powder of producing only is applicable to various Xeroxs and middle low speed laser printer mostly.In Xerox and middle low speed laser printer dry type ink powder commonly used, the single component powdered ink that has the two component ink powders that contain carrier and ink powder itself just to contain the composition that is magnetic, one-component magnetic ink powder is widely used because of having simplified developing apparatus, and the patent document of this respect and scientific and technical literature are also a lot.In recent years, the international office automation market new technology high speed laser printers such as ceramic fast fixing, IH conduction fast fixing that released one after another had reduced fixing temperature, had improved print speed.The static dry type one-component electronegativity ink powder of laser printer of present home market, its versatility is poor, only can satisfy the basic demand of low-end market at aspects such as image density, bottom ash, image level, definition, sticking drum, photographic fixing, flowability, environmental suitability, storage, transportations, but for the high speed laser printer high-end market, the decay of the image density of running hours, bottom ash, image adhesion and fixing level are the difficult problems of numerous puzzlement ink powder manufacturer always; In international consumptive material market, the ink powder market of high speed laser printer is by the monopolization of external several major companies, and compatible market is still blank.
Summary of the invention
The object of the present invention is to provide a kind of image color height, resolution height, image definition height, thin good linearity adhesion; fixing level is good, to the little high speed laser printer ink powder of photosensitive drums wearing and tearing; but the reusable laser printer magazine of can, the life-span that makes it to be beneficial to protection and prolong the magazine photosensitive drums.
Technical scheme of the present invention is: this ink powder is by binding resin, magnetic material, in charge controling agent reaches, external additive, it is characterized in that binding resin selects styrene-propene acid butyl ester-maleic acid butyl ester terpolymer for use, magnetic material is selected iron oxide or ferrite for use, charge controling agent is selected the salicylic acid chromium complex for use, inner additive is selected low molecule ethylene-propylene copolymer for use, simultaneously also can add hydrophobic silica, external additive is selected the hydrophobic silica of crossing with siloxane treated for use, except that said components, also increase phthalocyanine dye, add an amount of phthalocyanine dye, can improve image color, make image more clear, and after increasing the magnetic material consumption, still can make the electric charge content of ink powder be controlled at optimum range, the phthalocyanine dye consumption is less than 0.005% o'clock, hyperchromic DeGrain, and consumption was greater than 0.25% o'clock, will be very big to the electric charge content influence of ink powder, therefore should the strict consumption of controlling phthalocyanine dye.
Each component constitutes weight proportion:
Binding resin: 40-80%
Magnetic material: 20-60%
Charge controling agent: 1-5%
Inner additive: 2-8%
External additive: 0.1-0.8%
Phthalocyanine dye: 0.005-0.25%
Specific requirement for the key component selection:
Binding resin is selected styrene-propene acid butyl ester-maleic acid butyl ester terpolymer for use, and its polymerization is than 60: 30: 10 (mol ratio), MI value 1.6-2.6, varnish viscosity 140-380CP.
Magnetic material is selected iron oxide or ferrite for use, its mean grain size 0.1-5 μ, coercive force 20-150Oe, saturation magnetization 50-200emv/g, loose thickness 1.0-1.6g/cm 3
The low molecule ethylene-propylene copolymer that inner additive is selected for use, its polymerization is than being (10-15) %: (85-90) %.
The making of ink powder be with above-mentioned remove each component of external additive in proportion the amount of getting mix with high-speed mixer, use again that the extruded type mixing roll is mixing, compressing tablet, cooling, carry out coarse crushing then, micro mist is broken, carry out air classification again, obtain the classification product of mean grain size 7-12 μ m, in this classification product, add external additive again, promptly add the hydrophobic silica of crossing with siloxane treated of 0.1-0.8, fully mix getting final product.
The invention has the beneficial effects as follows: owing on selection and proportioning, all disclose a kind of new scheme, both required performance index good in the selection, consider simplified processing process again and reduce cost, thereby make ink powder image concentration height, resolution height, image definition height, the thin good linearity adhesion of acquisition, fixing level is good, little to the photosensitive drums wearing and tearing, is specially adapted to reusable high speed laser printer magazine can ink powder.Reduced the consumption of laser printer magazine simultaneously, cut the waste.
Embodiment
Embodiment one:
Figure B2009102282887D0000021
After above-mentioned six kinds of raw materials fully mix with high-speed mixer, use the extruded type mixing roll mixing again, compressing tablet, cooling, carry out coarse crushing then, micro mist is broken, carry out air classification again, obtain the branch superfine product of mean grain size 11.2 μ m, the hydrophobic silica of crossing with siloxane treated that added 0.7g at this minute in the superfine product again, fully mixing can obtain the high-quality ink powder, this ink powder uses its image color height of obtained image on the HP4300 printer, the resolution height, the image definition height, thin good linearity adhesion, fixing level is good, and little to the wearing and tearing of photosensitive drums.
Embodiment two:
Figure B2009102282887D0000022
Above-mentioned five kinds of raw materials and example 1 are processed processing equally, and then add 0.72 the hydrophobic silica of crossing with siloxane treated, fully mix and get final product, this ink powder uses its image color height of obtained image, resolution height, image definition height, thin good linearity adhesion on the HP4300 printer, fixing level is good, little to the photosensitive drums wearing and tearing.
Embodiment three:
Figure B2009102282887D0000023
Above-mentioned five kinds of raw materials are handled with quadrat method by example 1, obtain ink powder classification product after, add the hydrophobic silica that the siloxane treated of 0.68g is crossed again, fully mix getting final product.This ink powder uses its image color height of obtained image, resolution height, image definition height, thin good linearity adhesion on the HP4300 printer, fixing level is good, little to the photosensitive drums wearing and tearing.

Claims (4)

1. static dry type one-component electronegativity ink powder of laser printer, comprise binding resin, magnetic material, charge controling agent and interior external additive are formed, it is characterized in that: binding resin is selected styrene-propene acid butyl ester-maleic acid butyl ester terpolymer for use, magnetic material is selected iron oxide or ferrite for use, charge controling agent is selected the salicylic acid chromium complex for use, inner additive is selected low molecule ethylene-propylene copolymer for use, simultaneously also can add hydrophobic silica, external additive is selected the hydrophobic silica of crossing with siloxane treated for use, also increase phthalocyanine dye except that said components, each component constitutes weight proportion and is:
Binding resin: 40-80%
Magnetic material: 20-60%
Charge controling agent: 1-5%
Inner additive: 2-8%
External additive: 0.1-0.8%
Phthalocyanine dye: 0.005-0.25%.
2. static dry type one-component electronegativity ink powder of laser printer as claimed in claim 1, it is characterized in that: binding resin is selected styrene-propene acid butyl ester-maleic acid butyl ester terpolymer for use, its polymerization is than 60: 30: 10 (mol ratio), MI value 1.6-2.6, varnish viscosity 140-380CP.
3. static dry type one-component electronegativity ink powder of laser printer as claimed in claim 1, it is characterized in that: magnetic material is selected iron oxide or ferrite for use, its mean grain size 0.1-5 μ, coercive force 20-150Oe, saturation magnetization 50-200emv/g, loose thickness 1.0-1.6g/cm 3
4. static dry type one-component electronegativity ink powder of laser printer as claimed in claim 1 is characterized in that the low molecule ethylene-propylene copolymer that inner additive is selected for use, and its polymerization is than being (10-15) %: (85-90) %.
CN2009102282887A 2009-11-16 2009-11-16 Electrostatic dry single-component electronegative toner for laser printer Pending CN102063029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2009102282887A CN102063029A (en) 2009-11-16 2009-11-16 Electrostatic dry single-component electronegative toner for laser printer

Publications (1)

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CN102063029A true CN102063029A (en) 2011-05-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103608409A (en) * 2011-05-16 2014-02-26 田中精密工业株式会社 Magnetically enhanced resin
CN104614956A (en) * 2015-02-12 2015-05-13 邯郸汉光科技股份有限公司 Preparation method of organic photoconductive drum with long service life

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103608409A (en) * 2011-05-16 2014-02-26 田中精密工业株式会社 Magnetically enhanced resin
CN104614956A (en) * 2015-02-12 2015-05-13 邯郸汉光科技股份有限公司 Preparation method of organic photoconductive drum with long service life
CN104614956B (en) * 2015-02-12 2018-08-28 邯郸汉光科技股份有限公司 A kind of preparation method of long-life organic light guide drum

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Application publication date: 20110518