KR101668962B1 - Powder for laser printer toner having a superhydrophobic, and manufacturing method of superhydrophobic surface - Google Patents

Powder for laser printer toner having a superhydrophobic, and manufacturing method of superhydrophobic surface Download PDF

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KR101668962B1
KR101668962B1 KR1020150135504A KR20150135504A KR101668962B1 KR 101668962 B1 KR101668962 B1 KR 101668962B1 KR 1020150135504 A KR1020150135504 A KR 1020150135504A KR 20150135504 A KR20150135504 A KR 20150135504A KR 101668962 B1 KR101668962 B1 KR 101668962B1
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South Korea
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powder
laser printer
toner
hydrophobic
particles
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KR1020150135504A
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Korean (ko)
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천두만
오치빈
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울산대학교 산학협력단
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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
    • G03G9/16—Developers not provided for in groups G03G9/06 - G03G9/135, e.g. solutions, aerosols
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

The present invention provides a powder for a laser printer toner with a superhydrophobic property which is prepared by mixing 20-50 w% hydrophobic nanoparticles with 50-80 w% toner source particles, inserted into a toner of a laser printer, and outputted on a surface of a target through the laser printer. According to the powder for a laser printer toner with a superhydrophobic property as described above, and the method of preparing a superhydrophobic surface using the same, 20-50 w% hydrophobic nanoparticles are mixed with 50-80 w% toner source particles to form the powder. Then, when the powder is outputted on a surface of a target by using the laser printer, printing quality is maintained and a micro-sized pattern having a gap is formed between toner source particles while the hydrophobic nanoparticles are coupled with the toner. Finally, a surface having a micro/nano layer structure is printed. Therefore, a superhydrophobic pattern can be easily formed on the surface of a target.

Description

TECHNICAL FIELD The present invention relates to a powder for a laser printer toner having a superhydrophobic property and a method for manufacturing a superhydrophobic surface using the powder.

The present invention relates to a powder for a laser printer toner having a superhydrophobic property, and a method for producing a superhydrophobic surface using the same. More particularly, the present invention relates to a powder composition for a toner, The present invention relates to a powder for a laser printer toner having a superhydrophobic property and a method for producing a superhydrophobic surface using the same.

In general, when the contact angle of the water droplet is 150 DEG or more when water droplets come into contact with the surface of the substance, it is defined as super-hydrophobic. The contact angle of water in the range of 70 to 150 ° is defined as hydrophobic. In general, hydrophobicity is expressed by covering a surface with a molecule having a low surface tension, but it is difficult to express a superhydrophobic molecule only with a molecule having a low surface tension.

On the other hand, in order to fabricate a super-hydrophobic pattern, it is possible through technically complicated processes and it is necessary as expensive equipment. That is, a method of forming a super-hydrophobic pattern is a structural method of increasing the contact angle between a solid material surface and a liquid by increasing the roughness of the material surface, or a chemical method of coating a chemical substance having super- It is generally used.

However, the conventional method of fabricating the ultra-hydrophobic pattern is disadvantageous in that it is difficult for the general user to directly implement the method.

Such a method of forming a super-hydrophobic pattern is disclosed in Korean Patent Publication No. 10-2010-0008579 (2010.01.26).

An object of the present invention is to provide a powder for a laser printer toner having a superhydrophobic property which makes it possible to easily form a pattern having super-hydrophobicity, and a method for manufacturing a superhydrophobic surface using the same.

According to the present invention, there is provided a hydrophobic nanoparticle comprising 20 to 50% by weight of hydrophobic nanoparticles and 50 to 80% by weight of toner base particles, The present invention provides a powder for a laser printer toner.

According to another aspect of the present invention, there is provided a method of preparing a toner, comprising the steps of: preparing a powder mixed with 20 to 50 wt% of hydrophobic nanoparticles and 50 to 80 wt% of toner base particles; The method comprising the steps of: mounting a toner to the laser printer; inputting an object to the laser printer, and then operating the laser printer to output the powder to the object; The hydrophobic nanoparticles are bonded to the surface of the toner base particles to form a gap between the toner base particles to have a micro / nano hierarchical structure, and the hydrophobic nanoparticles have a super-hydrophobic property The present invention also provides a method of producing a superhydrophobic surface using a powder for a laser printer toner.

In accordance with the present invention, a powder for a laser printer toner having super hydrophobic property and a method for preparing a superhydrophobic surface using the same, wherein powder is formed by mixing 50 to 80% by weight of toner mother particles with 20 to 50% by weight of hydrophobic nanoparticles. Thereafter, when printing with a laser printer on the surface of the object, the print quality is maintained, and a micron-sized pattern in which the hydrophobic nanoparticles and the toner base particles are combined with each other to form a gap between the toner base particles is formed By causing the surface having the micro / nano hierarchical structure to be output, a super-hydrophobic pattern can be easily formed on the surface of the object.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram illustrating a pattern shape of a powder for a laser printer toner having a super-hydrophobic property according to an exemplary embodiment of the present invention at the time of outputting to a laser printer. FIG.
Fig. 2 shows an optical image of a shape having different microstructures when output to a laser printer on paper.
FIG. 3 shows optical images of a shape having different microstructures when output to a laser printer on an OHP film.
Fig. 4 shows different print qualities as optical images when printed on a paper and OHP film by a laser printer.
5 is a graph showing the surface contact angle of liquid according to the composition ratio of the hydrophobic nanoparticles when output to a laser printer on paper.
6 is a graph showing the surface contact angle of liquid according to the composition ratio of the hydrophobic nanoparticles when output to an OHP film by a laser printer.
Fig. 7 is a diagram showing an optical image of the surface contact state of the liquid when the laser printer is output on an OHP film.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The powder for a laser printer toner having a super hydrophobic property according to an embodiment of the present invention is formed by mixing the hydrophobic nanoparticles 100 and the toner base particles 200. At this time, the hydrophobic nanoparticles 100 are inserted into the toner of the laser printer while being mixed with the toner base particles 200 in a state of 20 to 50% by weight, As shown in FIG. Here, the hydrophobic nanoparticles 100 are preferably nanoparticles of hydrophobic silica, but the present invention is not limited thereto, and titanium oxide and alumina may be selectively used. The toner base particles 200 are preferably selected from carbon particles and polymer particles as particles constituting the main component in the powder for a toner of a laser printer which is generally used, but the present invention is not limited thereto, and carbon particles and polymer particles It is needless to say that they may be mixed and used. Here, the toner base particles have a micron particle size, but it is needless to say that the size of the toner base particles can be changed according to the application. In this case, when the polymer particles and the carbon particles are mixed, they are displayed in black. However, it is needless to say that yellow, magenta, or cyan colorant may be selectively mixed with the polymer particles. It is needless to say that functional additive may be additionally added to the polymer particles or the carbon particles so that the toner base particles may have functionality depending on the application. Here, the functional additive may be wax, silica powder, or both, but it is not limited thereto, and it is needless to say that the additive may be changed depending on the application.

Here, the object 10 may be paper or polymer paper, but it is not limited thereto. In this case, when the object 10 is used as a polymer paper, the polymer may be at least one selected from the group consisting of polypropylene (PP), polydimethylsiloxane (PDMS), polystyrene (PS), polyethylene terephthalate (PET), polyethylene naphthalate It is needless to say that any polymer selected from the group consisting of PE, polyethersulfone (PES), polycarbonate (PC), polyarylate (PAR), acrylic (PMMA) and polyimide (PI)

In this way, when the powder is formed by mixing the hydrophobic nanoparticles with the toner base particles in a mixed state of 20 to 50% by weight of the toner base particles using the laser printer, the micro / nano layer . Here, the hydrophobic nanoparticles 100 are bonded to the toner base particles 200, and the hydrophobic nanoparticles 100 or the hydrophobic nanoparticles 100 are bonded to each other, . That is, the hydrophobic nanoparticles 100 are prevented from bonding between the toner base particles 200 in a state of being bonded to the surface of the toner base particles 200, thereby forming a gap between the toner base particles 200 The toner mother particles 200 have a micron-sized pattern at the time of outputting, and as a result, when outputting the powder in which the hydrophobic nanoparticles 100 and the toner mother particles 200 are mixed, Layer structure.

As shown in FIG. 2, a state in which the powder in which the hydrophobic nanoparticles 100 and the toner base particles 200 are mixed on paper is output to the laser printer, and the state in which the hydrophobic nanoparticles 100 The hydrophobic nanoparticles 100 and the toner mother particles 200 may be separated from each other while being output to the surface of the object 10. In this case, It is possible to realize a stable super-hydrophobic property by forming a micro / nano hierarchical structure.

If the amount of the hydrophobic nanoparticles 100 is more than 50% by weight, the binding force of the toner base particles 200 adhering to the surface of the object is lowered upon outputting to the laser printer, and the toner base particles 200 ) And the hydrophobic nanoparticles (100) are not stably adhered to each other, the print quality is deteriorated at the time of outputting. On the other hand, when the hydrophobic nanoparticles 100 are less than 20% by weight, the amount of the hydrophobic nanoparticles 100 bonded to the surface of the toner base particles 200 at the time of outputting to the laser printer is small, It is difficult to form a hierarchical structure and a micron-sized pattern is not formed on the surface of the object, thereby making it difficult to realize super-hydrophobicity.

Thus, when the hydrophobic nanoparticles 100 are less than 20% by weight, the change of the contact angle when the composition ratio of the hydrophobic nanoparticles 100 is varied on the paper and the OHP film as shown in FIGS. 5 and 6 It can be seen that the material does not show super-hydrophobicity in a state of being output to the surface of the object 10 as shown in FIG.

The hydrophobic nanoparticles 100 are stably bonded to the surface of the toner base particles 200 when the hydrophobic nanoparticles 100 are mixed with the toner base particles 200 and output to the laser printer And a micro / nano hierarchical structure is formed to form a gap between the toner mother particles 200 in the state of the toner mother particles 200. The micro / nano hierarchical structure is super hydrophobic and has an optimum mixed composition ratio of 30 to 40% by weight .

In the powder for laser printer toner used in one embodiment of the present invention, 50 to 80% by weight of the toner base particles 200 are mixed with 20 to 50% by weight of the hydrophobic nanoparticles 100. That is, when the laser toner is applied to the surface of the object 10, the print quality is maintained and the hydrophobic nanoparticles 100 and the toner base particles 200 are combined with each other, And a micron-sized pattern having a gap is formed between the first and second substrates. Finally, the surface having the micro / nano hierarchical structure is finally output, so that a super-hydrophobic pattern can be easily formed on the surface of the object.

A method of manufacturing a super hydrophobic surface using a powder for a laser printer toner according to an embodiment of the present invention includes the steps of preparing a powder, loading the powder into the toner and mounting the powder on the laser printer, .

First, a powder and an object to be put into the toner of the laser printer are prepared. Here, the powder mixes the hydrophobic nanoparticles and the toner base particles. At this time, the hydrophobic nanoparticles are mixed with 20 to 50 wt% and the toner base particles are mixed with 50 to 80 wt%. If the amount of the hydrophobic nanoparticles is more than 50% by weight, the binding force of the toner base particles adhering to the surface of the object is lowered upon outputting to the laser printer, and adhesion of the toner base particles and the hydrophobic nanoparticles The printing quality is degraded at the time of outputting. On the other hand, when the hydrophobic nanoparticles are less than 20% by weight, the amount of the hydrophobic nanoparticles bound to the surface of the toner base particles is small, and when the hydrophobic nanoparticles and the toner base particles are output to the laser printer, It is difficult to form a nanosecondary structure and a micron-sized pattern is not formed on the surface of the object, thereby making it difficult to realize super-hydrophobicity. At this time, when the hydrophobic nanoparticles are mixed with the toner base particles and output to the laser printer, a gap is formed between the toner base particles in a state where the hydrophobic nanoparticles are stably bonded to the surface of the toner base particles To form a micro / nano hierarchical structure so as to have super-hydrophobicity and to have an optimal mixed composition ratio capable of improving the print quality to 30 to 40% by weight. Here, the hydrophobic nanoparticles are preferably nanoparticles of hydrophobicized silica, but the present invention is not limited thereto, and titanium oxide and alumina may be selectively used. The toner base particles may be carbon particles or polymer particles, or carbon particles and polymer particles mixed with each other as main components in the toner powder of a laser printer generally used. At this time, the toner base particles have a micron particle size, but the size may be changed according to the application. In this case, when the polymer particles and the carbon particles are mixed, they are displayed in black. However, it is needless to say that yellow, magenta, or cyan colorant may be selectively mixed with the polymer particles. In addition, it is needless to say that the functional toner may be additionally added to the polymer particles or the carbon particles so that the toner base particles may have functionality depending on the application. Here, the functional additive may be wax, silica powder, or both, but it is not limited thereto, and it is needless to say that the additive may be changed depending on the application.

The object is an object for causing the laser printer to output the powder to the surface, and the object is not limited to paper or polymer paper. When the object is used as a polymer paper, the polymer may be at least one selected from the group consisting of polypropylene (PP), polydimethylsiloxane (PDMS), polystyrene (PS), polyethylene terephthalate (PET), polyethylene naphthalate (PEN) It goes without saying that any polymer selected from the group consisting of polyethersulfone (PES), polycarbonate (PC), polyarylate (PAR), acrylic (PMMA) and polyimide (PI) can be used.

When the powder and the object in which the hydrophobic nanoparticles and the toner base particles are mixed are prepared, the powder is put into the toner used in the laser printer, and then the toner is mounted on the laser printer.

Thereafter, after the object is put into the laser printer, the laser printer is operated to output the powder to the surface of the object.

When the powder is mixed with the toner of the laser printer composed of 20 to 50% by weight of the hydrophobic nanoparticles and 50 to 80% by weight of the toner base particles, the hydrophobic nanoparticles are collected on the surface of the object, Thereby forming a gap between the toner base particles to have a micro / nano hierarchical structure, and to have a super-hydrophobic property on the surface of the object. As shown in FIG. 7, it can be seen that there is a difference between the water droplet contact angle of the powder output portion and the water droplet contact angle at the portion where the powder is not output, while the powder is output to the surface of the object.

In the method for preparing a superhydrophobic surface using the powder for a laser printer toner according to an embodiment, the powder may be super-hydrophobic in accordance with the object when the powder is output through the laser printer, The mixing ratio of the hydrophobic nanoparticles may be different. 5 and 6, when the object is paper, the powder is mixed with 30 to 50% by weight of the hydrophobic nanoparticles and 50 to 70% by weight of the toner base particles, The toner and the paper are put in a state of being super-hydrophobic in a state of being output to the paper surface by using the laser printer. On the other hand, when the object is the polymer paper, the powder is mixed with 20 to 50% by weight of the hydrophobic nanoparticles and 50 to 80% by weight of the toner base particles, and then the toner and the polymer are charged into the laser printer And then the polymer paper is output to the surface of the polymer paper using the laser printer.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: object 100: hydrophobic nanoparticles
200: Toner base particles

Claims (12)

20 to 50% by weight of hydrophobic nanoparticles and 50 to 80% by weight of toner base particles,
A powder for a laser printer toner having superhydrophobicity, which is output to a surface of an object through the laser printer while being inserted into a toner of a laser printer. The method according to claim 1,
The hydrophobic nanoparticle is a silica nanoparticle superfine hydrophobic powder for a laser printer toner. The method according to claim 1,
Wherein the object is a paper or polymer paper that is superhydrophobic. The method according to claim 1,
The hydrophobic nanoparticles are bonded to the surface of the toner base particles to form a gap between the toner base particles when the hydrophobic nanoparticles are output to the surface of the object through the laser printer to form a micro / A powder for a laser printer toner. The method according to claim 1,
Wherein the optimum mixing ratio of the hydrophobic nanoparticles is 30 to 40% by weight. The method according to claim 1 or 4,
Wherein the toner base particles are composed of carbon particles or polymer particles, a mixture of carbon particles and polymer particles, a mixture of polymer particles, a colorant and a functional additive. 20 to 50% by weight of hydrophobic nanoparticles, 50 to 80% by weight of toner base particles, and an object;
Loading the powder into the laser printer, and then mounting the toner to the laser printer; And
And a step of outputting the powder to the object by operating the laser printer after the object is put into the laser printer,
When the powder is output to the object through the laser printer, the hydrophobic nanoparticles are bonded to the surface of the toner base particles to form a gap between the toner base particles to have a micro / nano hierarchical structure, A method for producing a superhydrophobic surface using a laser printer toner powder having a super-hydrophobic property to make the surface of the object super-hydrophobic. The method of claim 7,
In preparing the powder and the object,
Wherein the hydrophobic nanoparticle is a silica nanoparticle. The method of claim 7,
In preparing the powder and the object,
Wherein the object is a paper or a polymer paper, and a powder for a laser printer toner. The method of claim 9,
In preparing the powder and the object,
When the object is the paper,
Wherein the powder is a mixture of 30 to 50 wt% of hydrophobic nanoparticles and 50 to 70 wt% of toner base particles. The method of claim 9,
In preparing the powder and the object,
When the object is the polymer paper,
Wherein the powder is a mixture of 20 to 50 wt% of hydrophobic nanoparticles and 50 to 80 wt% of toner base particles. The method according to any one of claims 7, 10, and 11,
Wherein the toner base particles are made of any one of carbon particles or polymer particles, a mixture of carbon particles and polymer particles, a mixture of polymer particles, a colorant and a functional additive.

KR1020150135504A 2015-07-10 2015-09-24 Powder for laser printer toner having a superhydrophobic, and manufacturing method of superhydrophobic surface KR101668962B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6077640A (en) * 1998-05-11 2000-06-20 Nippon Aerosil Co., Ltd. Fine powder of hydrophobic metal oxide, method for producing it, and toner composition for electrophotography
KR20120076057A (en) * 2010-12-29 2012-07-09 삼성전자주식회사 Toner for developing electrostatic image and method, apparatus for forming image and method for forming image using the same
JP2012236946A (en) * 2011-05-13 2012-12-06 Dic Corp Ink for printing ultra-hydrophobic pattern, ultra-hydrophobic pattern printed matter obtained by using the same, and method for producing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6077640A (en) * 1998-05-11 2000-06-20 Nippon Aerosil Co., Ltd. Fine powder of hydrophobic metal oxide, method for producing it, and toner composition for electrophotography
KR20120076057A (en) * 2010-12-29 2012-07-09 삼성전자주식회사 Toner for developing electrostatic image and method, apparatus for forming image and method for forming image using the same
JP2012236946A (en) * 2011-05-13 2012-12-06 Dic Corp Ink for printing ultra-hydrophobic pattern, ultra-hydrophobic pattern printed matter obtained by using the same, and method for producing the same

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