EP1812355A2 - Elektrofotografisch verarbeitbarer toner - Google Patents
Elektrofotografisch verarbeitbarer tonerInfo
- Publication number
- EP1812355A2 EP1812355A2 EP05801758A EP05801758A EP1812355A2 EP 1812355 A2 EP1812355 A2 EP 1812355A2 EP 05801758 A EP05801758 A EP 05801758A EP 05801758 A EP05801758 A EP 05801758A EP 1812355 A2 EP1812355 A2 EP 1812355A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- glass
- toner
- component
- glass flux
- melting temperature
- 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.)
- Granted
Links
Classifications
-
- 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
- G03G9/09—Colouring agents for toner particles
- G03G9/0902—Inorganic compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G7/00—Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G7/0093—Image-receiving members, based on materials other than paper or plastic sheets, e.g. textiles, metals
-
- 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
- G03G9/09708—Inorganic compounds
Definitions
- the invention relates to an electrophotographically processable toner with toner particles which have a matrix material, the toner particles at least partially having a first glass flux component which has a first melting temperature.
- Such a toner is known from WO 03/058351 A1.
- a ke ⁇ ramischer toner is described, which has a glass flow as a component.
- the glass flow is designed so that the toner is suitable for printing special glasses such as glass ceramics.
- glass articles which have a roughened surface. This is formed, for example, by sand blasting or by means of etching. This surface then offers a special optical effect. Instead of the mechanical processing of the upper In some cases, screen printing processes are also used in which a paint is applied to the surface of the glass substrate. The color forms after curing / baking a layer on the glass, which recreates the impression of a machined glass surface. In the screen printing process, a corresponding screen must be produced for each decor so that individual printing can not easily be carried out.
- This object is achieved in that at least some of the toner particles have an additional second glass flux component, whose melting temperature is greater than that of the first glass flux component, or that a further part of the toner particles has a second Giasfiusskornponente whose melting temperature is greater, as that of the first glass flux component.
- the different melting temperatures of the two Glasmannkomponen ⁇ th makes it largely melt the low-melting glass flow component during Einbrenn.
- the glass flux component with the higher melting point is bonded to the glass substrate by the intermediary of the first molten glass component. It does not melt or incomplete.
- optical transitions form, at which the light is refracted.
- the unfused or partially melted glass flux particles thus form scattering centers.
- the toner particles at least partially have a first glass flux component which have a first melting temperature
- the abovementioned scattered light centers are generated via a controlled melting process. It is exploited that the small Glasmannparti ⁇ angle usually melt faster than the larger. By means of a temperature-time-controlled process control it can be achieved that the "large" glass flux parts do not completely melt. In this case, the Glas lambdas ⁇ components can then consist of the same material.
- a bimodal size distribution is provided for the composition of the Glasfiusskomponente.
- the glass flux components are based on glasses free of heavy metals, in particular Pb- and / or Cd-free glasses.
- the toner is thus free of substances harmful to the environment. This is also for occupational safety issues of advantage.
- the glass flux components are based on zinc borosilicate glass. This glass flow is available as a cost-effective starting material that is ideally suited for documentation, in particular in the coating of glass ceramics and prestressed special glasses. If a colored sandblast, ⁇ tzimitat- or the like decor is to be created, it may be provided according to the invention that at least one of the glass flux components consists of a colored glass. In this case, finely distributed metals, for example as nanoparticles or coloring metal ions may be contained in the glass flux.
- the first glass flux component ei ⁇ ne melting temperature> 500 ° C and the second glass flux component has a melting temperature> 550 0 C, in particular that the first Glasmann ⁇ component a melting temperature in the range between 600 to 650 0 C and the second Glasmannkopmonente in the range between 650 to 700 0 C has.
- the difference between the two melting temperatures can be selected such that a complete melting of the second glass flux component is prevented sufficiently reliably.
- the toners according to the invention it is important that a matrix material is used which does not adversely affect the optical properties of the toner image formed. In particular, it should be ensured that the melting of the glass flux components is not hindered when the matrix material is burned out.
- the matrix material is formed by a plastic matrix, that the plastic matrix comprises polyester and / or a styrene acrylate and that the proportion of the polyester is 5-100% by weight of the plastic matrix.
- plastic matrices have the advantage that they burn out over a wide temperature range (for example in the range between 350 and 500 ° C.). This has a significant positive effect on the uniformity of the printed image. Pinholes, for example due to overburning, are largely prevented by this plastic matrix. The plastic toner burn completely or almost completely without leaving any residue.
- composition range of the plastic matrix for the components polyester / styrene acrylate is in the range from 50/50 to 20/80% by weight.
- the continuous burnout behavior of the toner over a wide temperature range can be supported in a simple manner if it is provided that the styrene acrylate fraction in the plastic matrix has at least two styrene acrylate components which have a different melting range.
- FIG. 1 is a schematic sectional view of a toner particle ei ⁇ nes toner according to the invention
- Fig. 2 in side view in section a coated with a toner image glass plate
- FIG. 3 the glass plate of FIG. 2 in front view.
- FIG. 1 shows a schematic representation of a toner particle 10 as used in a one- or two-component toner.
- the toner particle 10 has a material matrix 11. As a rule, this consists of a plastic material which, for example, contains the constituents polyester and styrene acrylate. In the matrix material 11, a first and a second Glas ⁇ flow component 12 and 13 are embedded. In this case, the first glass flux component 12 has a lower melting point than the second glass flux component 13.
- the toner particles of a toner are either all or only partially constructed in the manner shown in FIG. It is also conceivable that a further part of the toner particles 10 has only one of the two glass flux components.
- the toner can be applied to a glass substrate 20 by means of an electrophotographic printing process.
- Such a printing process is adequately described, for example, in DE 103 36 352.
- the content of this document is also the subject of this document.
- the penetration temperature is selected so that it lies above the melting point of the first glass flow components 12, but below that of the second glass flow components 13. This ensures that the first glass flux component 12 completely melts and forms the molten glass flow 14, as is marked accordingly in FIG. 2.
- the second Giasfiusskomponente 13 does not melt (or possibly not voll ⁇ constantly) and thus forms scattered light centers.
- the molten glass flow thus acts as a bonding agent between the glass substrate 20 and the second glass component 13.
- the imprint 23 is produced on the front side 21 of the glass substrate 20 as a toner image.
- the matrix material 11 burns out without leaving any residue when the toner is burnt in.
- light 25 for example from the rear side 22, is introduced into the glass substrate 20.
- the light passes into the molten glass flow 14.
- it preferably has the same refractive index as the glass substrate 20.
- the light 25 is refracted in the region of the particles of the second glass flux component 13 serving as scattered light centers, so that the scattered light 26 is formed.
- the coating 23 forms a coating which creates a translucent glass article.
- flow aid be contained for improved flow behavior during firing.
- the glass flux components 12, 13 are not completely embedded in the matrix material, but are only partially enveloped by them.
- the glass flux components 12, 13 can, as shown in FIG. 1, be present in a toner particle as separate particles. However, it is also conceivable that particles which contain both glass flux components are used.
- the proportion of the glass flux components in the toner is> 50% by weight to 80% by weight, typically 60 to 75% by weight, and preferably ⁇ 70% by weight.
- the particle size of the toner particles is chosen so that the D 50 vol value is between 5 and 15 ⁇ m for ideal toner transfer to the glass substrate.
- the size of the glass flux particles is preferably D 50 vol _ 9 to 10 .mu.m and / or the D 90 vol value iiegt in the range ⁇ 15 .mu.m, preferably _ 10 .mu.m.
- Suitable for printing are glasses, such as soda-lime glasses, borosilicate glasses, transparent, colored or non-colored glass ceramics (for example, Li-Al-Si glass ceramics), which have a high quartz mixed crystal phase.
- the penetration of the toner can also be carried out in soda-lime glass during the span Vor ⁇ process (600-720 ° C), preferably in the range between 600 to 650 ° C, or in the case of the glass ceramic during the ceramicizing process (up to 900 0 C) , Of course, a subsequent penetration (Sekundär ⁇ brand) is possible.
- the toner is transferred in the electrophotographic printing process. In this case, an individual image structuring is possible. In the case of flat prints an electrostatic printing can also be carried out. A sufficiently translucent effect can be achieved with layer thicknesses in the range between 1 to 15 ⁇ m, typically 3 to 5 ⁇ m.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Developing Agents For Electrophotography (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004054132A DE102004054132A1 (de) | 2004-11-08 | 2004-11-08 | Elektrofotografisch verarbeitbarer Toner |
| PCT/EP2005/011180 WO2006048116A2 (de) | 2004-11-08 | 2005-10-18 | Elektrofotografisch verarbeitbarer toner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1812355A2 true EP1812355A2 (de) | 2007-08-01 |
| EP1812355B1 EP1812355B1 (de) | 2010-04-07 |
Family
ID=35840089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05801758A Expired - Lifetime EP1812355B1 (de) | 2004-11-08 | 2005-10-18 | Elektrofotografisch verarbeitbarer toner |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080261139A1 (de) |
| EP (1) | EP1812355B1 (de) |
| JP (1) | JP2008519299A (de) |
| AT (1) | ATE463469T1 (de) |
| DE (2) | DE102004054132A1 (de) |
| WO (1) | WO2006048116A2 (de) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000334451A (ja) * | 1999-05-26 | 2000-12-05 | Japan Organo Co Ltd | 窒素含有排水の物理化学的処理方法 |
| DE19929522A1 (de) * | 1999-06-28 | 2001-01-18 | Schott Glas | Verfahren zur Aufbringung einer Beschichtung auf eine Oberfläche eines Werksstückes |
| DE19938447B4 (de) * | 1999-08-13 | 2005-08-11 | Schott Ag | Druckvorrichtung |
| DE10052370C2 (de) * | 2000-10-20 | 2003-06-05 | Schott Glas | Elektrofotografische Druckvorrichtung |
| DE10052305A1 (de) * | 2000-10-20 | 2003-07-10 | Schott Glas | Kopiermaschine |
| DE10052371A1 (de) * | 2000-10-20 | 2002-05-02 | Schott Glas | Modular aufgebaute elektrofotografische Druckvorrichtung |
| DE10114526B4 (de) * | 2001-03-22 | 2005-04-07 | Schott Ag | Verfahren und Vorrichtung zum Erwärmen und Fixieren eines Farbauftrages, insbesondere eines Tonerpulvers auf einem plattenförmigen Träger |
| US6798471B2 (en) * | 2001-04-25 | 2004-09-28 | Chi Mei Optoelectronics Corp. | Liquid crystal display |
| DE10142443C1 (de) * | 2001-08-31 | 2003-04-24 | Schott Glas | Elektrofotographische Druckvorrichtung |
| DE10154987A1 (de) * | 2001-11-08 | 2003-06-05 | Schott Glas | Kunststofftoner und Verfahren zum Herstellen eines Kunststofftoners |
| JP2006501488A (ja) * | 2002-01-08 | 2006-01-12 | カール−ツアイス−スチフツング | 電子写真印刷用セラミックトナー |
| DE10336352B4 (de) * | 2003-08-08 | 2007-02-08 | Schott Ag | Verfahren zur Herstellung von Streulichtstrukturen an flächigen Lichtleitern |
-
2004
- 2004-11-08 DE DE102004054132A patent/DE102004054132A1/de not_active Withdrawn
-
2005
- 2005-10-18 JP JP2007539486A patent/JP2008519299A/ja active Pending
- 2005-10-18 US US11/667,251 patent/US20080261139A1/en not_active Abandoned
- 2005-10-18 AT AT05801758T patent/ATE463469T1/de not_active IP Right Cessation
- 2005-10-18 DE DE502005009380T patent/DE502005009380D1/de not_active Expired - Lifetime
- 2005-10-18 WO PCT/EP2005/011180 patent/WO2006048116A2/de not_active Ceased
- 2005-10-18 EP EP05801758A patent/EP1812355B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006048116A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502005009380D1 (de) | 2010-05-20 |
| JP2008519299A (ja) | 2008-06-05 |
| WO2006048116A2 (de) | 2006-05-11 |
| EP1812355B1 (de) | 2010-04-07 |
| ATE463469T1 (de) | 2010-04-15 |
| WO2006048116A3 (de) | 2006-09-08 |
| US20080261139A1 (en) | 2008-10-23 |
| DE102004054132A1 (de) | 2006-05-18 |
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