CN104133352A - Toner for laser printers - Google Patents
Toner for laser printers Download PDFInfo
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- CN104133352A CN104133352A CN201410388701.7A CN201410388701A CN104133352A CN 104133352 A CN104133352 A CN 104133352A CN 201410388701 A CN201410388701 A CN 201410388701A CN 104133352 A CN104133352 A CN 104133352A
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- polyurethane resin
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Abstract
The invention relates to toner for laser printers. According to the technical scheme, a key raw material, resin, in the toner is carefully selected, so that the performance of toner is improved, the selection range of coloring agents is widened, the use range of the toner is expanded, and the tone is safe and environment-friendly in manufacture and use.
Description
Technical field
The application relates to computer peripheral information output consumptive material, is specifically related to laser printer/duplicating machine/facsimile recorder color toner.
Background technology
Occurred the monochromatic ink powder of the first business since 1993, since within 1998, there is the first business color toner, due to the fast development of laser printing demand, the technical development of laser printer/duplicating machine/facsimile recorder consumptive material ink powder is very fast.Ink powder can be divided into by charged polarity: positive electricity powder and negative electricity powder; Can be divided into by magnetic property: have magnetic and non-magnetic; Can be divided into by component: one-component and bi-component.From ink powder composition, formed by compositions such as resin, pigment, adjuvants.From the manufacture method of ink powder, there are direct polymerization method and melting pulverization etc.Its processing and manufacture relate to the content of the subjects such as super-fine processing, chemical industry, compound substance, are the high-tech products of generally acknowledging in the world.
Laser printer is the non-output device that impacts that laser scanner technique and electronic display technology are combined.According to the difference of type, printing function is also had any different, but its principle of work is basic identical, all will pass through: charging, exposure, development, transfer printing, the electricity that disappears, clean, photographic fixing seven procedures, wherein have five processes to carry out around photosensitive drums.When text or the image that will print are input in computing machine, by computer software, it is carried out to pre-service.Then convert by printed driver the print command (printer language) that printer can identify to and deliver to high frequency drive circuit, to control the Push And Release of generating laser, form dot matrix laser beam, through scanning mirror, the photosensitive drums in electronic development system is carried out to axial scan exposure again, longitudinal scanning is realized by self rotating of photosensitive drums.Photosensitive drums is a photosensitive device, has the characteristic that is subject to photoconduction logical.The optical coating on surface, before scan exposure, is filled even electric charge with by charging roller.In the time that laser beam is strafed in photosensitive drums with latticed form, the point being scanned is because of exposure conducting, and electric charge is discharged rapidly over the ground by conductive base.Do not have the point of exposure still to maintain original electric charge, just form a width potential difference (PD) sub-image (electrostatic latent image) at photosensitive drum surface like this, in the time rotating to the photosensitive drums of electrostatic latent image the position that is loaded with ink powder magnetic roller, the ink powder of oppositely charged is adsorbed to photosensitive drum surface and has formed ink powder image.When the photosensitive drums that is loaded with ink powder image continues rotation, while arriving image transfer device, a printer paper is also sent to the centre of photosensitive drums and image transfer device simultaneously, now image transfer device is discharged a strong voltage at the printer paper back side, ink powder in photosensitive drums is looked like to attract on printer paper, on the printer paper of ink powder image, send being loaded with into the high temperature fixing device hot melt of heating, pressurize again, after ink powder fusing, be immersed in printer paper, finally output is exactly printed text or image.
Resin proportion in ink powder is about 30-90%, in fact ink powder is exactly a kind of hot-melt resin that is dyed look, its effect is in the process of image fixing, various compositions in ink powder are fixed on paper by heating, pressurization, and therefore quality and the stability of the performance of resin to ink powder is vital.In routine techniques, be to select as acrylic compounds for making the resin of ink powder, phenylethylene, phenolic aldehyde, chlorine vinegar, vibrin etc., due to the epoch limitation of technical development, the bond properties of these resins and hot molten characteristic, chemical stability need to improve, and can't meet laser printing/duplicating/fax high-level efficiency, non-fault, the wide needs of application.
Summary of the invention
Applicant finds in long-term engineering practice, and acrylic resin modified and modified polyurethane resin has thundering bond properties and hot molten characteristic is good, chemical stability is high feature.
Described acrylic resin modified be the acryl resin of at least one modification in epoxy resin, organosilicon, Organic fluoride, urethane resin; Acrylic resin modified can be solia particle or emulsion, particle diameter 5-8 micron.
Described modified polyurethane resin is selected from: at least one in epoxy resin-polyurethane resin, epoxy resin and acrylic ester-urethane resin, castor oil-acrylate-polyurethane resin, acrylate-polyurethane resin, polysiloxane-polyurethane resin, organic silicon-acrylate-urethane resin, fluorine silicon-urethane resin, fluorine modified polyurethane resin, aliphatic polyurethane resin, polyester-polyurethane resin, polyethers-urethane resin, polyureas-urethane resin etc.; Modified polyurethane resin is solia particle or emulsion, particle diameter 5-8 micron.
After acryl resin and urethane resin modification, have the advantage of the resin of various modifications concurrently, outward appearance is as clear as crystal-yellowish translucent, particle diameter <100 nanometer, and molecular weight and soft durometer are adjustable, increase fixing level and reduce ghost image probability, and specific charge preferably; All-transparent after film forming, does not affect toner color development; Excellent water tolerance and chemical reagent resistance, extraordinary heat-resisting quantity and lower temperature resistance, chemical property is extremely stable, and weather resistance is very good; Secondly, its softening temperature and glass temperature, according to the softening point of ink powder of laser printer, melting index, agglomeration temperature, by regulating the monomer ratio in course of reaction, regulate arbitrarily; Or the resin of preparing two or more fusing points is composite meets the wider needs of ink powder fusing point, and even, by selecting the general parameter of various laser printers to manufacture general resin, hot molten characteristic meets the requirement of laser printing technology completely; Meanwhile, it has excellent adhesive property.Indices all meets the requirement of GB/T28032-2011 " electrophotographic image forming ink powder resin ", even higher than national standard.
The application's laser printer/duplicating machine/facsimile recorder by the technical scheme of color toner is: by weight percentage, Gu liquid/mixing in solid content
Colorant 1-50%
Acrylic resin modified and/or modified polyurethane resin 30-90%
Charge control agent 0.5-10%
Release agent 0.5-5%
Surface conditioning agent 0.5-5%
As preferably: the technical program can also be added the conventional auxiliary agent of any its performance of raising.
The application's colorant, can select at least one in water-soluble dye in routine techniques, solvent dye, disperse dyes, organic pigment, inorganic pigment, metallic luster pigment, ceramic pigment is colorant, the particle diameter of colorant particles requires 5-8 micron, comprises various form and aspect.If using the laser printing ink powder of ceramic pigment is as printing ceramic purposes, while needing high temperature melting, in ink powder, preferably add ceramic pigment 0.5-1 ceramic flux doubly.Ceramic flux is that existing ceramic technology uses.
While selecting water-soluble dye and disperse dyes to prepare ink powder, the preparation method of preferred molten comminuting method.When other non-water-soluble colorant is prepared ink powder, can use the preparation method of melting pulverization, preferably the preparation method of direct polymerization method.
The application's charge control agent, refers to diphenylglycollic acid metal complex class, quaternary ammonium salt, salicylic acid metal complex class, azo metal complex class in routine techniques, particle diameter 5-8 micron.
The application's release agent, refers to silicon dioxide, titania, the strontium titanates of particle diameter 5-8 micron in routine techniques.
The application's surface conditioning agent, refers to Tissuemat E in routine techniques, paraffin, f-t synthetic wax, Brazil wax, chloroflo, ester type waxes, the wax emulsion wax class at 5-8 micron.
Advantage and the beneficial effect of the application's technical scheme are:
1. the raw material resin of most critical in selected upgrading ink powder, acrylic resin modified and/or modified polyurethane resin is as the main body starting material of ink powder, ink powder has better specific charge, increase fixing level and reduce ghost image, improve ink powder stability and weatherability, softening point, melting index, agglomeration temperature regulate arbitrarily, meet laser printing/duplicating/fax high-level efficiency, non-fault, the wide needs of application.
Widened the range of choice of colorant, ink powder usable range expands.
. production run and use procedure safety and environmental protection, unharmful substance discharge.
Embodiment
Set forth the present invention in conjunction with embodiment; But can not regard specific embodiment as limitation of the present invention; The application measures by weight percentage, Gu the starting material of liquid/mixing calculate with solid content.
Embodiment 1: direct polymerization legal system is for ink powder
Component (weight g): emulsifying agent (3) water (100) butyl acrylate (BA) (30) styrene (St) (30) acrylic acid (AA) (5) ammonium persulfate (AP) (2) vinyltriethoxysilane (DB-151) (8) methacrylic acid ten difluoro fat in heptan (3) C.I. pigment red 122 (10) cetyl trimethyl ammonium bromide (2) Tissuemat E (3) silicon dioxide (3) strontium titanates (2) titania (1)
Process and step:
(1) 3/4ths emulsifying agent ［ NPE (OP-10) and lauryl sodium sulfate (K12) are with the mass ratio of 2:1 ］ is added to the water to stirring and dissolving; Then add butyl acrylate (BA), styrene (St), acrylic acid (AA) mix monomer, cetyl trimethyl ammonium bromide, Tissuemat E, add C.I. pigment red 122, silicon dioxide, titania, strontium titanates, strong stirring 30 minutes, until the particle diameter of particulate is below 5-8 micron, make pre-emulsion.
(2) separately initiator ammonium persulfate (AP) is incorporated in water to wiring solution-forming.In 250 milliliters of four-hole boiling flasks that reflux condensing tube, electric mixer, constant pressure funnel and thermometer are housed, add appropriate sodium bicarbonate, water and remaining emulsifying agent, be warming up to 60 DEG C, add part initiator solution, in 30 minutes, drip approximately 1/5 pre-emulsion, at 75-80 DEG C of insulation 1-2 hour; Vinyltriethoxysilane (DB-151) and fluorochemical monomer are sneaked in residue pre-emulsion with certain proportion, in 2-3 hour, pre-emulsion and residue initiator solution are splashed in flask, drip off rear insulation reaction 1-2 hour; Be cooled to below 40 DEG C, with ammoniacal liquor regulate pH value to 7-8.The particle diameter 5-9 micron of particulate.
(3) washing, separation of polymeric product, dries naturally, obtains direct polymerization red ink powder.
Embodiment 2: direct polymerization legal system is for ink powder
By the C.I. pigment red 122 in embodiment 1, alternative with 10 grams of carbon blacks, repeat above-mentioned steps, obtain direct polymerization powdered black ink.
Embodiment 3: direct polymerization legal system is for ink powder
(1) after being mixed with the toluene diisocyanate of 0.1mol, the solvent of 90 milliliters adds in the there-necked flask of nitrogen protection, add 10 grams of pr-yellow materials, 3 grams of salicylic acid metal complex charge control agents, 3 grams of Tissuemat Es, 3 grams of silicon dioxide, and drip three catalyzer dibutyltin dilaurates, be warming up to 60 DEG C (while making solvent with acetone, temperature of reaction is lower slightly), slowly drip a certain amount of organosilicon (end hydroxyl silicone oil), about 1.5 hours, drip off, continue reaction 1.5 hours; Then drip a certain amount of poly-Isopropanediol (Mn=1000), about 1.5 hours, drip off, continue reaction 1.5 hours; Cool to room temperature.
(2) take out rapidly first step reaction product, be placed in constant pressure funnel, to the N that adds the dihydromethyl propionic acid of 0.11mol in reactor, dinethylformamide solution is (with 90 milliliters of dissolvings, and it is complete to put in advance baking oven heating for dissolving), be warming up to 60 DEG C of dropwise reaction products, react after 3 hours, be cooled to room temperature, obtain head product.
(3) head product is precipitated with deionized water, wash away solvent etc., then with 10% sodium hydroxide solution neutralization, high-speed stirred emulsification, filtering with microporous membrane, the particle diameter of particulate, at 5-9 micron, dries naturally, obtains direct polymerization Yellow ink powder.
Embodiment 4: direct polymerization legal system is for ink powder
The pr-yellow material of embodiment 3 is substituted with 10 grams of C.I. solvent blues 97, repeat above-mentioned steps, obtain direct polymerization blue ink powder.
Embodiment 5: melting pulverization is prepared ink powder
Raw material: 3 grams, 3 grams of surface conditioning agent paraffin of directly yellow 10 grams of release agent silicon dioxide of 30 grams of cetyl trimethyl ammonium bromides of 20 grams of epoxy resin-polyurethane resins of 10 grams of organic silicon-fluorine-acryl resins
Method: (1) is poured the above-mentioned starting material except silicon dioxide in stirrer into, fully mixes, and makes compound.
(2) compound is dropped in extruding machine, at 90-150 DEG C, compound is extruded into fragment.
(3) with comminutor, above-mentioned fragment being pulverized is the flour of 20-30 micron.
(4) carry out air-flow crushing with the air of pressure 6-7 kilogram/square metre, carry out classification with the grader of 3000-5000 rev/min, collectors process, obtains the head product of 5-9 micron.
(5) add silicon dioxide, with the stirring machine mixing 3-4 minute of 900 revs/min, make its mobility be greater than 20%.
(6) sieve with 250 object screen clothes, make the Yellow ink powder of melting pulverization.
Embodiment 6: melting pulverization is prepared ink powder
The colorant of embodiment 5 is replaced with C.I. Red 167, repeat above-mentioned steps, make the red ink powder of melting pulverization.
Embodiment 7-9: embodiment 1,3,5 is detected, and embodiment 1 testing result is embodiment 7, and embodiment 3 testing results are embodiment 8, and embodiment 5 testing results are embodiment 9, comprehensive ink powder performance and printing effect detect 10 projects altogether.
| Sequence number | Test item | Unit | Embodiment 7 | Embodiment 8 | Embodiment 9 |
| 1 | Size-grade distribution | Micron | 5-9 | 5-9 | 5-9 |
| 2 | Specific charge | μc/g | 15 | 16 | 25 |
| 3 | Softening point | ℃ | 85 | 108 | 132 |
| 4 | Agglomeration temperature | ℃ | <46 | <46 | <46 |
| 5 | Aggegation degree | % | <3 | <3 | <4 |
| 6 | Image density | ? | 1.3-1.4 | 1.3-1.4 | 1.3-1.4 |
| 7 | Gray scale | Level | >14 | >12 | >10 |
| 8 | Bottom ash | ? | <0.001 | <0.001 | <0.003 |
| 9 | Resolution | Line/m | 6 | 6 | 5 |
| 10 | Photographic fixing fastness | % | 93 | 95 | 92 |
Claims (7)
1. laser printer/duplicating machine/facsimile recorder color toner, it is characterized in that: by weight percentage, Gu liquid/mixing in solid content, colorant 1-50%, acrylic resin modified and/or modified polyurethane resin 30-90%, charge control agent 0.5-10%, release agent 0.5-5%, surface conditioning agent 0.5-5%.
2. color toner claimed in claim 1, is characterized in that: acrylic resin modified is the acryl resin of at least one modification in epoxy resin, organosilicon, Organic fluoride, urethane resin; Acrylic resin modified can be solia particle or emulsion, particle diameter 5-8 micron.
3. color toner claimed in claim 1, is characterized in that: modified polyurethane resin is selected from: at least one in epoxy resin-polyurethane resin, epoxy resin and acrylic ester-urethane resin, castor oil-acrylate-polyurethane resin, acrylate-polyurethane resin, polysiloxane-polyurethane resin, organic silicon-acrylate-urethane resin, fluorine silicon-urethane resin, fluorine modified polyurethane resin, aliphatic polyurethane resin, polyester-polyurethane resin, polyethers-urethane resin, polyureas-urethane resin etc.; Modified polyurethane resin is solia particle or emulsion, particle diameter 5-8 micron.
4. color toner claimed in claim 1, is characterized in that: colorant is at least one in water-soluble dye, solvent dye, disperse dyes, organic pigment, inorganic pigment, metallic luster pigment, ceramic pigment, particle diameter 5-8 micron.
5. the preparation method of color toner claimed in claim 1, is characterized in that: colorant is water miscible, adopts melting pulverization preparation.
6. the preparation method of color toner claimed in claim 1, is characterized in that: colorant is non-water-soluble, adopts melting pulverization or direct polymerization legal system standby.
7. color toner claimed in claim 1, is characterized in that: colorant is ceramic pigment, is pottery colour developing purposes, while having high temperature melting step, adds colorant 0.5-1 ceramic flux doubly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410388701.7A CN104133352A (en) | 2014-08-09 | 2014-08-09 | Toner for laser printers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410388701.7A CN104133352A (en) | 2014-08-09 | 2014-08-09 | Toner for laser printers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104133352A true CN104133352A (en) | 2014-11-05 |
Family
ID=51806081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410388701.7A Pending CN104133352A (en) | 2014-08-09 | 2014-08-09 | Toner for laser printers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104133352A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104570634A (en) * | 2015-01-27 | 2015-04-29 | 珠海思美亚碳粉有限公司 | Carbon powder group and production method thereof |
| CN104893407A (en) * | 2015-05-29 | 2015-09-09 | 淄博陶正陶瓷颜料有限公司 | Black laser printing ink and production method thereof |
| CN107329381A (en) * | 2017-08-29 | 2017-11-07 | 邯郸汉光办公自动化耗材有限公司 | Color toner and preparation method thereof and the method for digital thermal transfer printing |
| CN107390484A (en) * | 2017-08-29 | 2017-11-24 | 邯郸汉光办公自动化耗材有限公司 | Multifunctional colour ink powder and preparation method thereof and the method for thermal transfer printing |
| CN107402500A (en) * | 2017-08-29 | 2017-11-28 | 邯郸汉光办公自动化耗材有限公司 | A kind of electrostatic printing color toner and its preparation method and application method |
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| CN104570634A (en) * | 2015-01-27 | 2015-04-29 | 珠海思美亚碳粉有限公司 | Carbon powder group and production method thereof |
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| CN113031411A (en) * | 2017-08-29 | 2021-06-25 | 邯郸汉光办公自动化耗材有限公司 | Multifunctional color toner, preparation method thereof and thermal transfer printing method |
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Application publication date: 20141105 |
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