EP1728124A2 - Verfahren zum bedrucken eines aufzeichnungsträgers unter verwendung eines durch vernetzung fixierten flüssigentwicklers - Google Patents
Verfahren zum bedrucken eines aufzeichnungsträgers unter verwendung eines durch vernetzung fixierten flüssigentwicklersInfo
- Publication number
- EP1728124A2 EP1728124A2 EP05715520A EP05715520A EP1728124A2 EP 1728124 A2 EP1728124 A2 EP 1728124A2 EP 05715520 A EP05715520 A EP 05715520A EP 05715520 A EP05715520 A EP 05715520A EP 1728124 A2 EP1728124 A2 EP 1728124A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier liquid
- crosslinking
- recording medium
- liquid
- carrier
- 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.)
- Withdrawn
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
- G03G9/12—Developers with toner particles in liquid developer mixtures
- G03G9/125—Developers with toner particles in liquid developer mixtures characterised by the liquid
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G13/00—Electrographic processes using a charge pattern
- G03G13/20—Fixing, e.g. by using heat
Definitions
- a potential image carrier e.g. a photoconductor to generate potential images (charge images) depending on the image, to color them in a developer station (inking station) and to print the image thus developed onto the recording medium.
- Either dry toner or liquid developer can be used to develop the potential images.
- a method for electrophoretic liquid development (electrographic development) in digital printing systems is e.g. known from EP 0 756 213 Bl or EP 0 727 720 Bl.
- the process described there is also known under the name HVT (High Viscosity Technology).
- a carrier liquid containing silicone oil with color particles (toner particles) dispersed therein is used as the developer liquid.
- the toner particles typically have a particle size of less than 1 icon. Further details can be found in EP 0 756 213 B1 or EP 0 727 720 B1, which form part of the disclosure of the present application.
- electrophoretic liquid development processes of the type mentioned with silicone oil as carrier liquid with toner particles dispersed therein and also a developer station comprising one or more application rollers for wetting the potential image carrier with liquid developer in accordance with the potential images on the potential image carrier.
- the developed potential image is then transferred to the recording medium via one or more transfer rollers.
- Previous liquid developer processes Ren are based on a high-resistance carrier liquid and suspended in it solid particles (toner particles) with a preferred charge.
- the fixation takes place by evaporation of the carrier liquid and simultaneous melting of the toner particles under the action of heat.
- the resin of the toner particles sticks together and to the recording medium.
- the fixation takes place by reducing the carrier liquid on the surface of the recording medium and by simultaneously melting the toner particles under the action of heat.
- the carrier fluid is reduced, among other things. by sucking away into the record carrier and / or over conditioning rollers that run on the unfixed print image and thereby remove carrier liquid.
- the problem to be solved by the invention consists in specifying a method with which the fixation with liquid developer is largely independent of the properties of the recording medium. Furthermore, the fixation should also be independent of the carrier of the color pigment (toner particles).
- the invention specifies a novel fixing method for an electrographic printing or copying device.
- the device contains an image-generating system, which generates an electronic potential image (charge image) on a first potential image carrier (e.g. a photoconductor), which is made visible by means of a developer station (coloring station) through charged dye particles (toner particles) and then, if necessary about other intermediate image carriers, such as Transfer rollers, transfer belt, transferred to a recording medium (e.g. paper) and fixed on it.
- a first potential image carrier e.g. a photoconductor
- dye particles toner particles
- the use of a liquid developer consisting of a high-resistance carrier liquid and toner particles is advantageous.
- a carrier liquid that meets these requirements can be based on silicone oil, for example
- the silicone oil can have polydimethylsiloxane (PDMS) molecules,
- the silicone oil can consist of molecules derived from polydimethylsiloxane (PDMS), which can have functional groups.
- PDMS polydimethylsiloxane
- the liquid developer should preferably have a weight fraction of toner particles of 10 to 55%.
- the developer liquid can have a concentration of dispersion stabilizers in the range from 0.5 to 5%, preferably> 1% (there is a significantly increased concentration compared to conventional liquid developers which are ⁇ 1%).
- the toner particles can have a reduced proportion of the carrier (conventionally resin) to bind the color pigments.
- the incorporation of the color pigments can be optimized for stable and uniform chargeability without the low melting temperature of the binder (resin) required for heat fixation. If the liquid developer has these properties, the toner images can be fixed on the recording medium by crosslinking the carrier liquid without the toner particles having to be melted. This is done by polymerizing the carrier liquid and / or by adding an auxiliary and / or by the action of a low auxiliary energy. Since only the carrier liquid is used for fixing, the properties of the recording medium for fixing are irrelevant.
- the polymerization reaction has progressed so far in process-relevant time ( ⁇ 1 sec) that the toner image is securely connected to the recording medium and the recording medium can be further processed directly.
- the polymerization reaction can be controlled so that the properties of the toner image can be adapted to different requirements, e.g. Hardness, gloss can be adjusted.
- the fixing according to the method according to the invention is thus characterized by the following special features: the fixing of the toner image on / on the recording medium takes place solely by crosslinking the carrier liquid; • The excess carrier liquid not required for fixing the toner image can be removed from the potential image carrier or intermediate carrier and / or recording medium; • The carrier liquid is transparent on the recording medium in the cross-linked state; By crosslinking the carrier liquid, the toner particles are embedded in a solid polymer matrix, wherein the carrier liquid firmly connects to the recording medium; In the non-image areas, the carrier liquid is solidified into a transparent film; • The carrier liquid can be cross-linked by: - reaction of radicals with the methyl groups of the PDMS; - Polymerization: assembly of the carrier liquid molecules into polymeric macromolecules by start reaction, chain growth and chain termination reaction; Polycondensation: connection of the carrier liquid molecules by reaction with various functional groups by elimination of by-products; - Polyaddition: Continuous addition of two different types of molecules without splitting off by-products
- crosslinking reaction of the carrier liquid can be started or accelerated by one or more additional components and / or its continuation can be made possible:
- the radiation energy can be supplied in the form of heat.
- the additional component can be in a gas, e.g. Ozone, which acts on the developer liquid; -
- the gas can be combined with one of the above-mentioned radiation energies, especially the corona radiation.
- the additional component can be an increased humidity; - The increased humidity can be generated by vaporization, a spray bar, etc.; - The increased air humidity can be used in conjunction with a condensation-curing carrier liquid; - The increased humidity can be combined with one of the radiation effects mentioned above.
- the additional component can be a solid or a liquid; - This solid or liquid can act as a reactant; - A catalyst can also be integrated into the component; the catalyst can combine with e.g. Contain platinum, tin, titanium; - This solid or liquid can be combined with one of the radiation effects mentioned above; - The effect of the reaction partner can only be generated by the combination with one of the radiation effects mentioned above.
- the addition or action of a component can take place at various points in the printing process; the addition of the abovementioned radiation effects can take place after the imagewise development of a toner image, preferably after the transfer to the recording medium; - The action of increased air humidity can take place after the imagewise development of a toner image, preferably after transfer to the recording medium; - A reaction partner can be added to the developer liquid circuit in the developer station; - The addition of a reaction partner can take place after the transfer to the record carrier (for example behind each printing module) - through a spray bar; - by a roller application unit.
- the recording medium can be coated with it. This can be done: - offline to the printing process; - Inline to the printing process before the toner image is transferred to the recording medium.
- FIG. 1 shows a basic illustration of a printing or copying device with which the method can be carried out
- Fig. 3 shows another way of fixing toner images.
- a potential image carrier 101 for example a photoconductor drum, is exposed to an erasure exposure 102.
- the potential image carrier is then charged in a station 103.
- Potential images of images to be printed are generated on the potential image carrier 101 by imagewise exposure in the station 104.
- These potential images are developed in a developer station 200 by a liquid developer with the properties mentioned above.
- liquid developer is taken from a developer supply 203 and fed to an application roller 202.
- the application roller 202 promotes the liquid Winder to an applicator roller 201 and this to the potential image carrier 101.
- the applicator roller 201 is then cleaned in the cleaning station 204.
- carrier liquid with toner particles passes over to the potential image carrier 101 in the image regions and is deposited there, in the non-image regions carrier liquid is transferred to the potential image carrier 101.
- a film is thus formed on the potential image carrier 101 which contains carrier liquid with toner particles in the image regions and carrier liquid in the non-image regions.
- the film is transferred to a recording medium 402 in a transfer printing station with an intermediate carrier 301.
- a back pressure roller 401 is also used for this.
- the intermediate carrier
- the record carrier 402 is finally fed to a fixing station 500, in which the fixing takes place according to the method described above. 2 shows the course of the fixation.
- the fixing station 500 has a radiation source 501, which emits radiation 502 as auxiliary energy.
- the radiation 502 is directed onto the recording medium 402 and strikes there on the film 503 which contains the printed images.
- the film 503 has the toner particles 504 and the carrier liquid 505.
- the radiation 502 connects the film 503 to the recording medium 402 according to the method described above, i.e. Carrier liquid 505 is crosslinked, but toner particles 504 are not melted.
- corona radiation is used as auxiliary energy.
- the fixing station 500 here has a corona radiation source 506, the radiation of which is directed onto the recording medium 402. With help the radiation, the carrier liquid 505 is crosslinked and solidified, as a result of which the toner images 504 are fixed on the recording medium 402. The toner particles 504 are not melted in the process.
- the charged toner particles dispersed in the carrier liquid pass completely (or almost completely) onto the potential image carrier in the area of the developer gap between the potential image carrier and applicator roller and are deposited there.
- the carrier liquid is split proportionally between the potential image carrier and possibly subsequent intermediate carriers (applies to the recording medium), the splitting taking place into image and non-image areas.
- conditioning roller that is in contact with the intermediate carrier and / or recording medium
- a conditioning roller • which is connected to potential in such a way that the charged toner particles are repelled by it and only the carrier liquid is split up;
- the carrier liquid transferred to a non-absorbent conditioning roller can be removed, for example, by a doctor blade;
- the transferred carrier liquid can e.g. be removed by a squeeze bar.
- silicone oil-based carrier liquids can be done in the following ways:
- radicals react with the methyl groups of the PDMS, so that crosslinking is created by oxidation with peroxy compounds.
- silicone resins it is achieved by spatial networking of the siloxane framework.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Liquid Developers In Electrophotography (AREA)
- Fixing For Electrophotography (AREA)
- Wet Developing In Electrophotography (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410009986 DE102004009986B3 (de) | 2004-03-01 | 2004-03-01 | Verfahren zum Bedrucken eines Aufzeichungsträgers |
PCT/EP2005/001963 WO2005083526A2 (de) | 2004-03-01 | 2005-02-24 | Verfahren zum bedrucken eines aufzeichnungsträgers unter verwendung eines durch vernetzung fixierten flüssigentwicklers |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1728124A2 true EP1728124A2 (de) | 2006-12-06 |
Family
ID=34801949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05715520A Withdrawn EP1728124A2 (de) | 2004-03-01 | 2005-02-24 | Verfahren zum bedrucken eines aufzeichnungsträgers unter verwendung eines durch vernetzung fixierten flüssigentwicklers |
Country Status (8)
Country | Link |
---|---|
US (2) | US20080226322A1 (de) |
EP (1) | EP1728124A2 (de) |
JP (1) | JP4653802B2 (de) |
CN (1) | CN1985219B (de) |
AU (1) | AU2005217729B2 (de) |
CA (1) | CA2557025A1 (de) |
DE (1) | DE102004009986B3 (de) |
WO (1) | WO2005083526A2 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008155633A (ja) * | 2006-12-20 | 2008-07-10 | Heidelberger Druckmas Ag | 再印刷画像形成可能な印刷版の処理方法 |
DE102010036480A1 (de) | 2010-07-19 | 2012-01-19 | OCé PRINTING SYSTEMS GMBH | Elektrografisches Druckgerät |
DE102010037244A1 (de) | 2010-08-31 | 2012-03-01 | OCé PRINTING SYSTEMS GMBH | Anordnung zum Bedrucken eines Bedruckstoffs bei einem elektrofotografischen Druckgerät |
DE102010037245B4 (de) | 2010-08-31 | 2017-09-14 | Océ Printing Systems GmbH & Co. KG | Verfahren zum Bedrucken eines Bedruckstoffs bei einem elektrografischen Druckgerät |
JP5752318B2 (ja) | 2011-04-29 | 2015-07-22 | ヒューレット−パッカード デベロップメント カンパニー エル.ピー.Hewlett‐Packard Development Company, L.P. | プリンター表面から材料を除去するための装置、プリンター、及び方法 |
US10486452B2 (en) | 2016-02-26 | 2019-11-26 | Amcor Flexibles Selestat Sas | Flexible packaging substrates compromising thermally-stable prints |
RU2729570C2 (ru) | 2016-03-18 | 2020-08-07 | Амкор Флексибль Селеста Сас | Гибкий слоистый материал для печатных реторт-упаковок |
NL2016697B1 (en) * | 2016-04-29 | 2017-11-20 | Xeikon Mfg Nv | Digital printing apparatus and process using liquid toner. |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1508794A (en) * | 1974-04-03 | 1978-04-26 | Agfa Gevaert | Protection of toner images |
US4130599A (en) * | 1975-05-19 | 1978-12-19 | General Electric Company | Silanol-free resins |
US4945020A (en) * | 1989-06-30 | 1990-07-31 | E. I. Du Pont De Nemours And Company | Photosensitive leuco dye containing electrostatic master with printout image |
US5364726A (en) * | 1990-03-30 | 1994-11-15 | Xerox Corporation | Liquid developers having curable liquid vehicles |
JP3442406B2 (ja) * | 1990-03-30 | 2003-09-02 | ゼロックス・コーポレーション | 硬化性液体ベヒクルを有する液体現像剤 |
US5340679A (en) * | 1993-03-22 | 1994-08-23 | Xerox Corporation | Intermediate transfer element coatings |
DE69426393T2 (de) | 1993-09-20 | 2001-04-12 | Australia Res Lab | Verfahren und vorrichtung zur flüssigentwicklung |
EP0756213B1 (de) * | 1994-02-08 | 2002-12-04 | Research Laboratories of Australia Pty Limited | Mehrfarbenbilderzeugungsgerät mit flüssigentwicklung |
JP4150118B2 (ja) * | 1999-01-08 | 2008-09-17 | リサーチ ラボラトリーズ オブ オーストラリアプロプライエタリイ リミテッド | 電子写真現像剤及び記録材料 |
JP2000309734A (ja) * | 1999-02-17 | 2000-11-07 | Canon Inc | インクジェット用インク、導電性膜、電子放出素子、電子源および画像形成装置の製造方法 |
JP2002006738A (ja) | 2000-06-21 | 2002-01-11 | Minoru Maeda | 太陽の動き簡易推測計 |
DE10121999A1 (de) * | 2001-05-05 | 2002-11-07 | Merck Patent Gmbh | Verfahren und Vorrichtung zur Bestimmung von flüchtigen Substanzen in Lösung |
JP4815074B2 (ja) * | 2001-08-08 | 2011-11-16 | 株式会社リコー | 電子写真液体現像剤及び画像形成方法 |
DE10228420A1 (de) * | 2002-06-25 | 2004-02-05 | Heraeus Kulzer Gmbh & Co. Kg | Verfahren zur Keimreduktion und/oder Sterilisation von Abformmaterialien |
JP4151674B2 (ja) * | 2005-06-06 | 2008-09-17 | アイシン精機株式会社 | 超電導磁石装置の着磁方法 |
-
2004
- 2004-03-01 DE DE200410009986 patent/DE102004009986B3/de not_active Expired - Fee Related
-
2005
- 2005-02-24 JP JP2007501177A patent/JP4653802B2/ja not_active Expired - Fee Related
- 2005-02-24 CA CA002557025A patent/CA2557025A1/en not_active Abandoned
- 2005-02-24 AU AU2005217729A patent/AU2005217729B2/en not_active Ceased
- 2005-02-24 WO PCT/EP2005/001963 patent/WO2005083526A2/de active Application Filing
- 2005-02-24 CN CN200580006612.0A patent/CN1985219B/zh not_active Expired - Fee Related
- 2005-02-24 EP EP05715520A patent/EP1728124A2/de not_active Withdrawn
- 2005-02-24 US US10/589,683 patent/US20080226322A1/en not_active Abandoned
-
2011
- 2011-06-01 US US13/150,369 patent/US8931412B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2005083526A3 * |
Also Published As
Publication number | Publication date |
---|---|
JP4653802B2 (ja) | 2011-03-16 |
CN1985219A (zh) | 2007-06-20 |
DE102004009986B3 (de) | 2005-08-18 |
US8931412B2 (en) | 2015-01-13 |
CN1985219B (zh) | 2011-09-07 |
US20110256478A1 (en) | 2011-10-20 |
AU2005217729B2 (en) | 2010-04-22 |
CA2557025A1 (en) | 2005-09-09 |
JP2007525717A (ja) | 2007-09-06 |
AU2005217729A1 (en) | 2005-09-09 |
WO2005083526A2 (de) | 2005-09-09 |
WO2005083526A3 (de) | 2006-12-21 |
US20080226322A1 (en) | 2008-09-18 |
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Owner name: OCE PRINTING SYSTEMS GMBH & CO. KG |
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