CN107315328A - A kind of magnetic carbon powder and preparation method thereof - Google Patents
A kind of magnetic carbon powder and preparation method thereof Download PDFInfo
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- CN107315328A CN107315328A CN201710666608.1A CN201710666608A CN107315328A CN 107315328 A CN107315328 A CN 107315328A CN 201710666608 A CN201710666608 A CN 201710666608A CN 107315328 A CN107315328 A CN 107315328A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/083—Magnetic toner particles
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/097—Plasticisers; Charge controlling agents
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Abstract
The invention discloses a kind of magnetic carbon powder and preparation method thereof, belong to electrostatic development technical field, it is desirable to provide a kind of to improve the illiquidity problem that occurs in always magnetic mono-component carbon dust and because of the powered not enough magnetic carbon powder the problems such as water ripples that developing roller surface occurs.Magnetic carbon powder of the present invention, including following weight parts component：20~60 parts of binder resins, 20~60 parts of magnetics, 0.15~4 part of charge adjusting agent, 1~1.75 part of hydrophobic silica, the parts by weight of titanium oxide 0.1~2, the parts by weight of resin microparticle 0.1~0.5, the parts by weight of wax 1~10 with the opposite polarity polarity of magnetic.The present invention can be used for laser printing.
Description
Technical field
The invention belongs to electrostatic development technical field, especially a kind of magnetic carbon powder and preparation method thereof.
Background technology
The invention is relevant magnetic mono-component carbon dust composition related content, then specific description, by making for a long time
The developer roll that is had worn away with surface is in use, not only keep good mobility smooth for powder and with uniform powered
Property, uniform carbon dust layer is thus formed on developer roll, can prevent carbon dust caking from causing uneven image problem and holding figure
As concentration and the magnetic mono-component carbon dust related content of image contamination can be prevented.
The dry process development method of usual electronic photographs is divided to two kinds, uses the bi-component of carbonaceous powder and the two-component developing agent of carrier
Visualization way and without using carrier only with the single component development mode of the monocomponent toner of carbonaceous powder.Wherein single component development side
Formula generally realizes the miniaturization of developing machine and low priceization and has maintenance also simple advantage, therefore positive popularization is utilized at present
Duplicator, the printer of single component development mode, and significantly improve print speed.In order to move carbon powder particle, using containing
The dual component development mode carbon dust of the two-component developing agent of carrier granular is different, and magnetic mono-component carbon dust is carbon powder particle itself
Mobile generation strong influence of the mobility to carbon dust.
Non-magnetic mono-component carbon dust is the scraper using making such as metal or resins on developer roll, is pressed by applying pressure
Pressure, control forms the carbon powder layer thickness on developer roll.Bi-component carbon dust is the mobile carbon dust that is charged by friction by carrier, but magnetic
Property one pack system carbon dust it is different from bi-component carbon dust, the attraction of magnetic turns into driving force and the smooth shifting of carbon dust is completed with developer roll
It is dynamic, it is by the friction of generation that carbon dust is powered during by regulating course accessory (scraper plate).The requirement of magnetic mono-component carbon dust has enough
Mobility passes through regulating course accessory, by using the developer roll of surface abrasion for a long time, as sleeve pipe (sleeve) surface is flat
Now powered uneven some caking phenomenons between carbon dust are skidded off, water ripples occurs in developer roll sleeve surface, can finally cause
Occurs the pollution problem of water ripples in image, thus all the time in order to prevent from occurring using developer roll sleeve surface for a long time
Ripple glaze phenomenon, by reducing the mobility of carbon dust, the pressure that increase receives when carbon dust passes through regulating course accessory reduces water ripples
Bad problem.But the method, which not only deteriorates, supplies powder, can't obtain the concentration of image uniform, therefore there is image is uneven to ask
Topic.
Thus more requirement research and development are by for a long time using the developer roll of surface abrasion in use, can also good fluidity confession
Powder is smooth and forms uniform carbon dust layer on developer roll with uniform charging property, and can prevent ripples on developer roll sleeve pipe
Line causes the magnetic mono-component carbon dust of image contamination.
The content of the invention
The present invention is intended to provide it is a kind of can improve the illiquidity problem that occurs in always magnetic mono-component carbon dust with
And because of powered not enough magnetic carbon powder the problems such as the water ripples that developing roller surface occurs and preparation method thereof.
In order to solve the above-mentioned technical problem, the technical scheme that the present invention is provided is such：A kind of magnetic carbon powder, including under
State parts by weight of component：20~60 parts of binder resins, 20~60 parts of magnetics, 0.15~4 part of charge adjusting agent, 1~1.75 part it is hydrophobic
Property silica, the parts by weight of titanium oxide 0.1~2, with the parts by weight of resin microparticle 0.1~0.5 of the opposite polarity polarity of magnetic,
The parts by weight of wax 1~10.
Wherein, described hydrophobic silica includes hydrophobic silica and surface of the surface area for 20~80 ㎡/g
Product is 130~230 ㎡/g hydrophobic silica；
Wherein, the two ratio is 0.5~1.5 parts by weight：0.5~0.25 parts by weight.
Wherein, described binder resin is copolymer, styrene monomer and the methyl-prop of styrene monomer and acrylate
Copolymer, ethylene-based polymer and its copolymer of olefin(e) acid ester, styrene based copolymer, polyvinylether, polyethylene ketone, polyester,
Polyetheramine, polyurethane, rubber-like, epoxy resin, polyvinyl butyral resin rosin, denaturing rosin, one kind in phenolic resin or
It is several.
Wherein, described ethylene-based polymer be polyvinyl acetate, it is poly- vinyl propionate, poly- butyric acid ethene, polyethylene, poly-
One or more in propylene.
Wherein, described styrene based copolymer be SB, styrene-isoprene copolymer,
One or more in styrene-maleic acid copolymer.
Wherein, described charge adjusting agent is containing metallized azo dye, salicylic acid compound, Buddhist nun's lattice dyestuff, fourth stage ammonium
One or more in salt；
Wherein, when magnetic carbon powder is elecrtonegativity, the charge adjusting agent used is containing metallized azo dye, salts of salicylic acid compound
One or both of thing；
Wherein, when magnetic carbon powder is electropositive, the charge adjusting agent used is one in Buddhist nun's lattice dyestuff, fourth stage ammonium salt
Plant or two kinds.
Wherein, described resin microparticle is silica, titanium oxide, aluminum oxide, zinc oxide, magnesia, cerium oxide, oxygen
Change the one or more in iron, cupric oxide, tin oxide, scandium oxide.
Wherein, the particle diameter of described resin microparticle is 0.5~1 μm.
Wherein, described magnetic carbon powder also includes mould release.
A kind of preparation method of magnetic carbon powder as described above, comprises the following steps：
Step 1：Binder resin, magnetic, wax, charge adjusting agent are mixed, stirring；
Step 2：Said mixture is extruded using hot extruder, particle diameter is crushed to for 5~25 μm, obtains carbon powder A；
Step 3：In above-mentioned carbon powder A add hydrophobic silica, resin microparticle, titanium oxide, detection image and
Mobile phase
The content of the invention as described in detail below.
The magnetic mono-component carbon dust composition of the invention is in order to achieve the above object：
A) binder resin 1) is contained；2) magnetic；3) charge adjusting agent；4) wax
B) ㎡ of specific surface area 20 to 80/g of silicic acid anhydride hydrophobic silica；
C) 13~230 ㎡ of specific surface area/g of silicic acid anhydride hydrophobic silica；
D) titanium oxide；
E) with the resin microparticle of magnetic opposite polarity polarity.
The mobility and the magnetic mono-component carbon dust good to image conformity that invention personnel improve carbon dust were researched and developed
Cheng Zhong, in magnetic carbon powder coatingparticles after two kinds of mutually different hydrophobic silicas of addition specific surface area, coating and carbon
The resin microparticle result of powder opposite polarity, it can be verified that the mobility occurred in always magnetic mono-component carbon dust can be improved not
Sufficient problem and because powered not enough the problems such as the water ripples that developing roller surface occurs, therefore the invention is completed on this basis.
The invention be containing binder resin, the magnetic carbon powder coatingparticles of charge adjusting agent, silicic acid anhydride specific surface area
20 or 80 ㎡/g hydrophobic silica, the hydrophobic silica of the specific surface area 130 of silicic acid anhydride or 230 ㎡/g,
With 0.5~1 micron of carbon dust opposite polarity of resin microparticle and the magnetic mono-component carbon dust composition of oxidized metal powder
Related content.
Above-mentioned binder resin a) 1) for a) being contained in magnetic carbon powder coatingparticles used in the invention is styrene monomer
Copolymer with acrylate or with methacrylate；Polyvinyl acetate, poly- vinyl propionate, poly- butyric acid ethene, polyethylene,
Or ethylene-based polymer and its copolymer such as polypropylene；SB, styrene-isoprene copolymer
Or the styrene based copolymer of styrene-maleic acid copolymer etc.；Polyvinylether, polyethylene ketone, polyester, polyetheramine, polyurethane,
Rubber-like, epoxy resin, polyvinyl butyral resin rosin, denaturing rosin, phenolic resin etc. are used alone or as a mixture preferably.
In the invention during a) charge adjusting agent elecrtonegativity 3) containing above-mentioned a) magnetic carbon powder coatingparticles, it can use and contain
Metallized azo dye or salicylic acid compound etc., during electropositive, can use Buddhist nun's lattice dyestuff or fourth stage ammonium salt etc..Above-mentioned electric charge
Conditioning agent content in carbon dust is not limited, but contains 0.15 or 4 weight preferably in magnetic carbon powder coatingparticles.
What is used in the invention is above-mentioned a) in order to prevent the ghost phenomenon of magnetic mono-component carbon dust coatingparticles, can add
Containing a) 4) mould release, its example to have a various wax class and low molecular weight olefins system resin etc., the specifically used polypropylene of olefin-based resin,
Polyethylene, ethylene propylene copolymer preferably, are more suitable for using polypropylene preferably.Above-mentioned mould release is in the weight of binder resin 100
Containing 0.05 or 5 weight preferably.As the average grain diameter of the carbon dust coatingparticles of the above-mentioned invention is not limited, but 5 or 30 μm preferably,
And can be manufactured by melting mixing comminuting method and polymerization.
The specific surface area 20 of above-mentioned silicic acid anhydride b) used in the invention or 80 ㎡/g hydrophobicity titanium dioxide
Silicon, can prevent the powered inhomogeneities that mutually caking occurs between carbon dust, and by making carbon dust uniform after regulating course accessory
Spread and play a part of improving charging uniformity.The specific surface area 20 or 80 of the hydrophobic silica of silicic acid anhydride
㎡/g preferably, is more suitable for as 30 or 50 ㎡/g.
The above-mentioned C used in the invention) silicic acid anhydride specific surface area 130 or 230 ㎡/g hydrophobicity dioxy
SiClx, can improve mobility and carbon dust can be made to move quickly through regulating course accessory, can obtain preventing image color uneven from this
Effect.The specific surface area 130 or 230 ㎡/g of the hydrophobic silica of general silicic acid anhydride preferably, be more suitable for 150 or
200㎡/g。
Using the specific surface area 20 of above-mentioned silicic acid anhydride b) or 80 ㎡/g hydrophobic silica when, it is above-mentioned c)
When the specific surface area of the hydrophobic silica of silicic acid anhydride is less than 130 ㎡/g, carbon dust mobility effect bottom is improved and a large amount of
Print the spot problem for the uneven generation for having carbon dust layer in the situation of SOLID images, the image of printing.Specific surface area exceedes
During 230 ㎡/g, bigger serface silica is buried in the surface of carbon dust, causes the problem of mobility effect of carbon dust declines.
The situation of the ㎡ of specific surface area 130 to the 230/g handled using above-mentioned c) hydrophobicity hydrophobic silica, it is above-mentioned
B) when the hydrophobic silica specific surface area of silicic acid anhydride is less than 20 ㎡/g, mutually caking easily occurs to show between carbon dust
The pollution of shadow roller surface water ripples, from this be likely to occur in the image of printing water ripples pollution, during more than 80 ㎡/g, by than
The small silica of surface area, carbon dust is by pressure during regulating course and lacks tribocharge charging effect for alleviation, is possible to from this
The problem of causing reduction image color.
The specific surface area 130 of above-mentioned silicic acid anhydride c) or 230 ㎡/g hydrophobic silica be it is above-mentioned b) dredge
The specific surface area 20 of hydration process or 80 ㎡/g hydrophobic silica are compared, carbon dust coatingparticles surface largely it is outer add for
It is good.
The hydrophilic silicon oxides of non-silicic acid anhydride compare the hydrophobic silica of two kinds of silicic acid anhydrides, a small amount of outer
Add preferably.Be more suitable for as in carbon dust coatingparticles totally 100 weight, specific surface area 20 or 80 ㎡/g containing silicic acid anhydride it is hydrophobic
The property weight of silica 0.5 or 1.5, the specific surface area 130 of silicic acid anhydride or 230 ㎡/g hydrophobic silica 0.5 or
2.5 weight.
Outside above-mentioned silica d), inorganic fine particles can use the material being widely known by the people.Such as titanium oxide, oxidation
The particulates such as aluminium, zinc oxide, magnesia, cerium oxide, iron oxide, cupric oxide, tin oxide, wherein mutability and buying facility etc.
From the aspect of when using titanium oxide preferably.It is general to use 0.1~2 weight, less than 0.1 weight in use, declining drum core pollutes anti-
Only effect, occurs drum core wear phenomenon during more than using 2 weight, in printing.
Above-mentioned resin microparticle e) used with carbon dust opposite polarity polarity.Such as use styrenic monomers and acrylic acid
The resin microparticle of ester or methacrylate copolymer, typically using 0.1~0.5 weight.Less than 0.1 weight in use, not
The ripple glaze phenomenon occurred in low temperature environment on developer roll can be improved, beaten for a long time more than 1 weight in use, powered wheel can be polluted
Image occurs during print bad.
Such as described above, by adding the hydrophobic silicas of two kinds of particle diameters and micro- with the resin of carbon dust opposite polarity
Particle, can prevent the carbon dust that carbon dust caking and the regulation acquirement concentration by additive are further improved on sleeve pipe (sleeve).
Image forming method about the invention is that attachment carbon dust is formed by forming the photosensitive surface of electrostatic latent image
Visual image and the image forming method including above-mentioned visual image is transferred in transfer material.
Above-mentioned carbon dust employs the electrostatic image imaging carbon dust in the invention.Above-mentioned image forming method is likely to be electricity
Sub- Photographic technique,
Electronic photography technique is general for the band galvanic process of electrostatic latent image carrier surface uniform charged；Carry out it is powered quiet
Various photoconductivity materials are used on electric latent image carrier, (the electrostatic latent image) for forming electrostatic latent image exposes
Photoreduction process；By adhere on sub-image the developer such as carbon dust can video videograph process；The similar transfer material with paper
The transfer process of upper transhipment carbon dust；Remove non-transfer remaining toner scale removal process；Reduce photoreceptor electrically remove electric process；And
Fixing including being fixed carbon dust by heat or pressure is constituted.Now the carbon dust in the invention is used and taken the photograph in such electronics
In shadow method.
Embodiment
With reference to embodiment, the claim to the present invention is further described in detail, but is not constituted
Any limitation of the invention, any limited number of time modification made in the claims in the present invention protection domain, still in the present invention
Claims in.
Embodiment 1
Styrene acrylate resins (T1/2:155 degree) addition magnetic (coercive force Hc in 100 weight:600e) 100 weight
With wax (Tm:135 degree) 5 weight, the weight of iron system charge adjusting agent 2 and after mixing, by it is hot-extrudable carry out scattered and crush,
Classification obtains 8.9 microns of carbon powder particle A.
In above-mentioned carbon powder particle A, the weight of addition small particle hydrophobic silica 1.0, big particle diameter hydrophobicity titanium dioxide
After the weight of silicon 0.5, the weight of resin microparticle 0.1, the weight of titanium oxide 0.5, detection image and mobility.
Embodiment 2
Styrene acrylate resins (T1/2:155 degree) addition magnetic (coercive force Hc in 100 weight:600e) 100 weight
With wax (Tm:135 degree) 5 weight, the weight of iron system charge adjusting agent 2 and after mixing, by it is hot-extrudable carry out scattered and crush,
Classification obtains 8.9 microns of carbon powder particle A.
In above-mentioned carbon powder particle A, the weight of addition small particle hydrophobic silica 1.0, big particle diameter hydrophobicity titanium dioxide
After the weight of silicon 0.5, the weight of resin microparticle 0.3, the weight of titanium oxide 0.5, detection image and mobility.
Embodiment 3
Styrene acrylate resins (T1/2:155 degree) addition magnetic (coercive force Hc in 100 weight:600e) 100 weight
With wax (Tm:135 degree) 5 weight, the weight of iron system charge adjusting agent 2 and after mixing, by it is hot-extrudable carry out scattered and crush,
Classification obtains 8.9 microns of carbon powder particle A.
In above-mentioned carbon powder particle A, the weight of addition small particle hydrophobic silica 1.0, big particle diameter hydrophobicity titanium dioxide
After the weight of silicon 0.5, the weight of resin microparticle 0.5, the weight of titanium oxide 0.5, detection image and mobility.
Comparative example 1
Styrene acrylate resins (T1/2:155 degree) addition magnetic (coercive force Hc in 100 weight:600e) 100 weight
With wax (Tm:135 degree) 5 weight, the weight of iron system charge adjusting agent 2 and after mixing, by it is hot-extrudable carry out scattered and crush,
Classification obtains 8.9 microns of carbon powder particle A.
In above-mentioned carbon powder particle A, the weight of addition small particle hydrophobic silica 0.5, big particle diameter hydrophobicity titanium dioxide
After the weight of silicon 0.5, the weight of resin microparticle 0.05, the weight of titanium oxide 0.5, detection image and mobility.
Comparative example 2
Styrene acrylate resins (T1/2:155 degree) addition magnetic (coercive force Hc in 100 weight:600e) 100 weight
With wax (Tm:135 degree) 5 weight, the weight of iron system charge adjusting agent 2 and after mixing, by it is hot-extrudable carry out scattered and crush,
Classification obtains 8.9 microns of carbon powder particle A.
In above-mentioned carbon powder particle A, the weight of addition small particle hydrophobic silica 0.5, big particle diameter hydrophobicity titanium dioxide
After the weight of silicon 0.5, the weight of resin microparticle 1.2, the weight of titanium oxide 0.5, detection image and mobility.
Detection：
Image color：After 4 positions for determining Solid area-graph pictures, by the image density for detecting its each point
(image density) confirms its average value.Image color detects that it is detected using electric eye (Electroeye) reflection of the concentration
As a result classified according to following standard：
◎:Image density more than 1.3；
○:Within image density more than 1.2 1.3；
△:Within image density more than 1.1 1.2；
×:Within image density 1.1.
The homepage image color of detection image specimen page：
Image contamination：According to long-term print image, the bottom ash occurred in the picture, CR pollutions cause to occur image contamination,
The degree of the appearance such as striped, which is defined, to be detected：
◎:Without image contamination；
○:There is slight image contamination；
△:Many image contaminations；
×:Image contamination is serious.
Minor variations：When printing page 2000, by detecting the carbon dust weight of every per unit area on developer roll of page 200,
Evaluate with number of print pages increase intensity of variation compared with homepage, the result of detection is classified according to following standard：
◎:When printing page 2,000, the weight of the per unit area carbon dust of developer roll is compared to homepage increase by less than 10%.
○:When printing page 2,000, the weight of the per unit area carbon dust of developer roll is compared to homepage increase by more than 10% 20%
Below.
△:When printing page 2,000, the weight of the per unit area carbon dust of developer roll is compared to homepage increase by more than 20% 30%
Below.
×:When printing page 2,000, the weight of the per unit area carbon dust of developer roll is compared to homepage increase by more than 40%.
Coherency (mobility of carbon dust)：
Equipment：Thin river micro mist tester (Hosokawa micron powder tester PT-S)；
Test material amount:2g；
Amplitude (Amplitude):1mm dials 3~3.5；
Sieve (Sieve)：53,45,38 μm；
Time of vibration：120 ± 0.1 seconds.
After being deposited 2 hours in normal temperature RH 55 ± 5%, before and after according to each diameter sieves of above-mentioned condition detection
Variable quantity, the following condensation degree for adjusting carbon dust.
1) [in residual powder quality/2g of 53 μm of sieves] × 100；
2) × 100 × (3/5) [in residual powder quality/2g of 45 μm of sieves]；
3) × 100 × (1/5) [in residual powder quality/2g of 38 μm of sieves]；
Condensation degree (Carr's cohesion)=(1)+(2)+(3).
Coherency examination criteria：
◎:Condensation degree is less than 10, mobility very good state.
○:Condensation degree more than 10 is less than 15, the state of good fluidity.
△:Condensation degree more than 15 is less than 20, the slightly worse state of mobility.
×:Condensation degree more than 20, the excessively poor state of mobility.
Detailed testing result is shown in Table 1：
The testing result of table 1
| Experiment numbers | Image color | Image contamination | Long term conentration | Condensation degree |
| Embodiment 1 | ◎ | ◎ | ◎ | ○ |
| Embodiment 2 | ◎ | ◎ | ◎ | ○ |
| Embodiment 3 | ◎ | ◎ | ◎ | ○ |
| Comparative example 1 | ◎ | △ | ○ | ○ |
| Comparative example 2 | ◎ | △ | ○ | △ |
Above-described is only presently preferred embodiments of the present invention, all timess done in the range of the spirit and principles in the present invention
What modifications, equivalent substitutions and improvements etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of magnetic carbon powder, it is characterised in that including following weight parts component：20~60 parts of binder resins, 20~60 parts of magnetic
Powder, 0.15~4 part of charge adjusting agent, 1~1.75 part of hydrophobic silica, the parts by weight of titanium oxide 0.1~2, with magnetic polarity
The parts by weight of resin microparticle 0.1~0.5, the parts by weight of wax 1~10 of opposite polarity.
2. a kind of magnetic carbon powder according to claim 1, it is characterised in that described hydrophobic silica includes surface
Product is that 20~80 ㎡/g hydrophobic silica and surface area are 130~230 ㎡/g hydrophobic silica；
Wherein, the two ratio is 0.5~1.5 parts by weight：0.5~0.25 parts by weight.
3. a kind of magnetic carbon powder according to claim 1, it is characterised in that described binder resin be styrene monomer with
Copolymer, the copolymer of styrene monomer and methacrylate, ethylene-based polymer and its copolymer of acrylate, benzene second
Alkene based copolymer, polyvinylether, polyethylene ketone, polyester, polyetheramine, polyurethane, rubber-like, epoxy resin, polyvinyl alcohol contracting fourth
One or more in aldehyde rosin, denaturing rosin, phenolic resin.
4. a kind of magnetic carbon powder according to claim 3, it is characterised in that described ethylene-based polymer is poly- acetic acid second
One or more in alkene ester, poly- vinyl propionate, poly- butyric acid ethene, polyethylene, polypropylene.
5. a kind of magnetic carbon powder according to claim 3, it is characterised in that described styrene based copolymer is benzene second
One or more in alkene-butadiene copolymer, styrene-isoprene copolymer, styrene-maleic acid copolymer.
6. a kind of magnetic carbon powder according to claim 1, it is characterised in that described charge adjusting agent is azo containing metal
One or more in dyestuff, salicylic acid compound, Buddhist nun's lattice dyestuff, fourth stage ammonium salt；
Wherein, when magnetic carbon powder is elecrtonegativity, the charge adjusting agent used is containing in metallized azo dye, salicylic acid compound
One or two；
Wherein, when magnetic carbon powder be electropositive when, the charge adjusting agent used be Buddhist nun's lattice dyestuff, one kind in fourth stage ammonium salt or
Two kinds.
7. a kind of magnetic carbon powder according to claim 1, it is characterised in that described resin microparticle be silica,
One or more in titanium oxide, aluminum oxide, zinc oxide, magnesia, cerium oxide, iron oxide, cupric oxide, tin oxide, scandium oxide.
8. a kind of magnetic carbon powder according to claim 1, it is characterised in that the particle diameter of described resin microparticle is 0.5
~1 μm.
9. a kind of magnetic carbon powder according to claim 1, it is characterised in that described magnetic carbon powder also includes mould release.
10. the preparation method of a kind of magnetic carbon powder as described in claim 1-9 is any, it is characterised in that comprise the following steps：
Step 1：Binder resin, magnetic, wax, charge adjusting agent are mixed, stirring；
Step 2：Said mixture is extruded using hot extruder, particle diameter is crushed to for 5~25 μm, obtains carbon powder A；
Step 3：Hydrophobic silica, resin microparticle, titanium oxide, detection image and flowing are added in above-mentioned carbon powder A
Phase.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811586A (en) * | 2019-01-28 | 2019-05-28 | 中国科学院兰州化学物理研究所 | A kind of method that laser printing prepares super-hydrophobic coat |
| CN109946931A (en) * | 2017-12-20 | 2019-06-28 | 武汉宝特龙科技股份有限公司 | A kind of ink powder of laser printer |
| CN113625535A (en) * | 2021-08-12 | 2021-11-09 | 福建美宏科技有限公司 | Ink powder capable of printing durable handwriting and preparation method thereof |
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| CN102089716A (en) * | 2008-07-11 | 2011-06-08 | 日本优比可株式会社 | Polyester resin for tonor, and toner for electrostatic charge development |
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