WO2013107764A1 - Matériau d'enregistrement par jet d'encre - Google Patents

Matériau d'enregistrement par jet d'encre Download PDF

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Publication number
WO2013107764A1
WO2013107764A1 PCT/EP2013/050725 EP2013050725W WO2013107764A1 WO 2013107764 A1 WO2013107764 A1 WO 2013107764A1 EP 2013050725 W EP2013050725 W EP 2013050725W WO 2013107764 A1 WO2013107764 A1 WO 2013107764A1
Authority
WO
WIPO (PCT)
Prior art keywords
recording material
jet recording
ink jet
substrate
coating
Prior art date
Application number
PCT/EP2013/050725
Other languages
German (de)
English (en)
Inventor
Konstantinos Kalessios
Hajime Sugita
Kenji Tsuda
Original Assignee
Mitsubishi Hitec Paper Europe Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Hitec Paper Europe Gmbh filed Critical Mitsubishi Hitec Paper Europe Gmbh
Publication of WO2013107764A1 publication Critical patent/WO2013107764A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/506—Intermediate layers

Definitions

  • the present invention relates to an ink jet recording material, as shown in its basic structure in Figure 1, comprising at least:
  • a flat substrate (1) having a front (a) and a front (a) opposite rear side (b),
  • an undercoat (2) positioned above the front side (a) of the substrate (1) and / or below the rear side (b) of the substrate (1),
  • an upper coating (3) positioned above the at least one undercoat (2) on sides of the front face (a) of the substrate (1) and / or below the at least one sub-coating (2) on the side of the back (b) of the substrate (1 ).
  • the invention also relates to a method for producing such an ink jet recording material.
  • Inkjet recording materials especially those with a paper substrate, are well known in the art.
  • the known ink jet recording materials have a multi-layered coating, which is then formed, for example, of at least one or more ink-receiving layers and at least one protective layer, wherein the at least one protective layer is formed over the at least one ink-receiving layer.
  • an intermediate layer connected to the ink-receiving layer is additionally provided directly on the substrate.
  • the essential components of the known ink receiving layers are inorganic pigments and binders, of which as pigments in particular silica and the hydroxides and oxides of aluminum and as a binder polyvinyl alcohol are widely used.
  • An ink-jet recording paper having an ink-receiving layer and a topsheet covering the ink-receiving layer is known from EP-A-0 806 299. While the ink-receiving layer contains no pigments, the top layer comprises inorganic pigment particles, in which case, for example, aluminum hydroxide of the boehmite type with a pore structure is used. Radius distribution of 10 to 35 ⁇ ngström, corresponding to 1 to 3.5 nm, is listed.
  • the substrates used are in particular baryth-coated or polyolefin-coated papers.
  • DE-A-19 952 356 also describes an ink jet recording paper having a plurality of coating layers.
  • the known paper has on at least one side of its support as a first layer an ink-receiving layer with fine inorganic particles and a binder resin.
  • the ink-receiving layer is then coated or impregnated with a coating liquid in the form of a topcoat and then dried.
  • the coating liquid contains at least one specific tetraalkoxy titanium dissolved in an organic solvent.
  • the inorganic particles in the ink-receiving layer it is possible to use, among others, those of synthetic amorphous silica, kaolin, talc, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, aluminum hydroxide, alumina and alumina hydrate (pseudoboehmite sol) alone or in combination of two or more.
  • alumina hydrate or colloidal silica as fine inorganic particles is described, with an alumina hydrate having a pseudoboehmite structure being particularly preferred.
  • EP-A-0 732 219 which is considered as the closest prior art, proposes a printing medium in which an ink-receiving layer, which in turn is covered by a surface layer, is provided on a liquid-absorbent paper base material. While the ink-receiving layer comprises a binder and a cationic substance, the surface layer is intended to contain cationic ultrafine particles of alumina or alumina hydrate having a particle diameter in the range of 1 nm to 500 nm. For the surface layer, a gloss of 45% or more at a viewing angle of 75 ° is disclosed.
  • inorganic pigments of the ink-receiving layer among a variety of other pigments, there are mentioned, inter alia, alumina and alumina hydrate.
  • organic particles may still be present.
  • a suitable range for the particle sizes are 0.1 to 20 microns, corresponding to 100 to 20,000 nm.
  • EP-A-0 803 375 discloses a recording material, in particular for ink-jet printing, whose porous recording layer applied to a substrate contains not only nonionic or cationic water-insoluble resin particles but also aluminum oxide hydrate particles, in which case boehmite having a secondary particle size of from 100 to 200 nm is preferred.
  • their drying takes place in contact with a smooth surface.
  • the recording layer may be covered with a silicon dioxide layer to improve the scratch resistance.
  • EP-A-0 810 101 discloses a recording material having a porous ink-receiving layer which may contain both the pure hydroxides of aluminum and pure alumina, including boehmite alumina hydroxide wherein the microcrystals of the alumina hydroxide are in one certain degree of parallelism.
  • One of its objects is that invention to provide a high gloss recording material. By way of example, values in the range from 51% to 68% are mentioned.
  • EP-A-0 875 394 it is known to treat aluminum oxide hydroxide with the rare earth salts and to use it for the production of the recording layer of an ink jet recording material.
  • EP-A-1 512 544 provides for the addition of polynuclear aluminum hydroxo complexes to nanocrystalline inorganic compounds contained in the recording layer for the purpose of improving the shelf life and increasing the printing speed of ink jet recording materials.
  • These compounds which according to the statements in this document are to have a pore volume of> 20 ml / 100 g, are particularly preferably pseudoboehmite and silicon dioxide having a particle size of not more than 20 nm.
  • others may be used , as defined above, non-nanoporous nanocrystalline inorganic inorganic compounds may be included in the recording layer.
  • polyester films are proposed as suitable substrates and, if paper is considered, preferably baryta-coated or polyolefin-coated paper.
  • Uncoated papers of various types may also be used, but their composition and properties are not specified. At this point it is merely stated that they can vary greatly.
  • ink jet recording materials to be used successfully in business should be printable at very high printing speeds by means of inkjet printers and in parallel also in offset printing.
  • the area of application "business area” demands in any case for rather subdued costs, which are appropriate for the operational area. This requires both the quantitative use of raw materials to limit as well as to minimize manufacturing costs.
  • the object of the present invention is to provide the public with an ink jet recording material which meets the above-mentioned requirements and in particular comprises:
  • an ink jet recording material at least comprising:
  • both the at least one undercoat (2) and the at least one top coat (3) each have an inorganic pigment
  • the at least one sub-coating (2) also has an organic hollow-body pigment in addition to the inorganic pigment.
  • the inventive method initially provides the training and the provision of a flat substrate (1) with a front side (a) and one of the front side (a) opposite back (b) before.
  • a planar substrate (1) may be a plastic film preferably with a further coating facilitating corona coating.
  • paper for example an untreated base paper, as a flat substrate (1).
  • paper as a sheet substrate (1) is done for example and in a preferred embodiment on a paper machine in which in at least one upstream Mischbütte a paper pulp of different pulps, optionally groundwood, fillers and water is applied and where to this Paper pulp before being fed to the paper machine prefers further constituents, for example resin glue for engine sizing, as well as other customary additives, such as pigments, shading dyes and / or optical brighteners.
  • resin glue for engine sizing as well as other customary additives, such as pigments, shading dyes and / or optical brighteners.
  • the method proposed here provides for the preparation of a first coating composition, this first coating composition comprising at least
  • precipitated calcium carbonate is considered to be preferred, either or particularly preferably being included as the sole pigment in the first coating composition or in combination with further inorganic pigments, especially selected from the list, comprising kaolin and silica dioxide.
  • further inorganic pigments especially selected from the list, comprising kaolin and silica dioxide.
  • inorganic pigment organic hollow body pigment
  • inorganic pigment may be formed either exclusively by the precipitated calcium carbonate or by a combination of precipitated calcium carbonate with further inorganic pigment.
  • the preferred ratio ranges disclosed above are intended to apply both to the first coating composition prepared for application and to the at least one undercoat (2) formed therefrom.
  • compositions include:
  • binders selected from the list, comprising: polyvinyl alcohol, partially or fully saponified, starch, gelatin, polyacrylates, Vinylestermischpolymere, Polyvi- nylacetatmischpolymere, polystyrene-butadiene latices and cellulose derivatives. These binders can be incorporated alone or else, and preferably in combination with one another, into the first coating composition, with a combination of polyvinyl alcohol with a further binder in particular being considered to be very particularly preferred.
  • the application of the prepared first coating composition for forming a subcoating (2) on the front side (a) and / or on the back side (b) of the planar substrate (1) is preferably carried out by means of a coating apparatus selected from the list, including curtain coater and spray coater, film press and roller applicator, air brush coater, knife and roller blade coater.
  • a coating apparatus selected from the list, including curtain coater and spray coater, film press and roller applicator, air brush coater, knife and roller blade coater.
  • the curtain coater is very particularly preferred both in its design as a slot caster and in its embodiment as a sliding surface caster.
  • Drying of the first coating composition for forming a subcoating (2) on the front side (a) and / or on the back side (b) of the planar substrate (1) is usually carried out by a method in which heat is supplied, as happens by hot-air floatation dryer or contact dryer, usually in the form of drying cylinders. Proven is also a combination of the listed dry processes.
  • the ink jet recording material proposed on this side then has a respective surface-related mass, preferably from 2 to 15 g / m 2 and very particularly preferably from 6 to 10 g / m 2, with respect to the undercoat (2) applied on one or both sides.
  • the method proposed here provides for the preparation of a second coating composition, this second coating composition comprising at least one second inorganic pigment.
  • This second inorganic pigment is preferably aluminum hydroxide, which is either and very particularly preferably included as the sole pigment in the second coating composition or in combination with other inorganic pigments, in particular selected from the list, comprising silicon dioxide and in particular pyrogenic silica.
  • a ratio based on% by weight (aluminum hydroxide: further inorganic pigments) in a range from 3: 1 to 8: 1.
  • the preferred ratio range disclosed above is intended to apply both to the second coating composition prepared for application and to the at least one top coating (3) formed therefrom.
  • compositions include:
  • binders selected from the list, comprising: polyvinyl alcohol, partially or fully saponified, but also: starch, gelatin, polyacrylates and styrene-acrylate Copolymers, polyvinyl acetate mixed polymers, polystyrene-butadiene latexes and cellulose derivatives.
  • These binders may be incorporated alone or else, and preferably in combination with one another, into the second coating composition, with a combination of polyvinyl alcohol with a further binder in particular being considered to be very particularly preferred.
  • Applying the prepared second coating composition for forming an upper coating (3) on the at least one sub-coating (2) on the front side (a) of the substrate (1) and / or below the at least one sub-coating (2) on the side of Back side (b) of the substrate (1) is preferably done by means of a coating device selected from the list comprising curtain coater and spray coater, film press and roller applicator, air brush coater, doctor blade and roller doctor coater.
  • a coating device selected from the list comprising curtain coater and spray coater, film press and roller applicator, air brush coater, doctor blade and roller doctor coater.
  • the curtain coater is very particularly preferred both in its design as a slot caster and in its embodiment as a sliding surface caster.
  • the drying of the second coating composition for forming an upper coating (3) on the at least one sub-coating (2) on the side of the front side (a) of the substrate (1) and / or below the at least one sub-coating (2) on the back side (B) of the substrate (1) is usually done by a method in which heat is supplied, as is done by hot-air floating dryer or contact dryer, usually in the form of drying cylinders.
  • Proven is also a combination of the listed dry processes. It represents a possible variant of the presently proposed method for producing an inkjet recording material, when the drying of the first coating composition to form a subcoating (2) and the drying of the second coating composition to form an upper coating (3) occur simultaneously and thus sub and top coating ( 2, 3)
  • the inkjet recording material proposed here has a respective basis-related mass of preferably from 1 to 15 g / m 2 , further limited from 3 to 8 g / m 2 and very particularly preferably from 4 to 6 g / m 2 on.
  • the ink jet recording material having the sheet substrate (1), the at least one undercoat (2) and the at least one top coat (3) preferably undergoes calendering a surface compaction with concomitant friction to provide gloss on the underside (2) and topcoat (3) side in a most preferred range of 10 to 40%, and most preferably in the range of 20 to 40% as measured by Tappi 450 or ISO 2813 with a 60 ° angle of reflection.
  • a calender with at least one press nip used in which one pressing surface has a high hardness, while the other pressing surface is formed elastically. If the ink-jet recording material proposed here carries only one undercoat (2) and one top coat (3) on one side, this side with top and bottom coat (2, 3) is preferred for contacting the press face with high hardness.
  • a preferred compression pressure in a range of 60 kN / m to 220 kN / m, most preferably in a range of 100 kN / m to 140 kN / m and more particularly in a range of 1 10 kn / m to 135 kn / m proved particularly suitable. If, by means of the method proposed here, an inkjet recording material is produced which has both an undercoating (2) and an uppercoating (3) on both sides, it is particularly preferred if
  • the friction during smoothing results on the one hand already by the walking of both the recording material and the elastic pressing surface in the middle of the press nip in contact with the hard pressing surface, the friction can be further increased by a moderate speed difference between recording material and hard pressing surface in the press nip.
  • a paper pulp of eucalyptus pulp and other pulp fibers with fillers and water is applied in a mixing chest. Further constituents of the pulp to be added are rosin size for engine sizing with an amount of 0.6% by weight (atro), based on the total weight of the pulp, and other customary additives. fe, such as pigments and / or optical brighteners. After completion of the pulp this is then fed to a fourdrinier paper machine, where it is processed into a paper web with a basis weight of 69 g / m 2 .
  • a formulation with the following main components is used:
  • the first coating composition is applied to the substrate (1) both front and back on the substrate (1) using a curtain coater as a slot caster to form an undercoating (2), each having a basis weight of 8.0 when dry g / m 2 for the undercoating (2) is measured.
  • the second coating composition for forming a top coat (3) is applied here only on the undercoat / (2) previously applied to the front side of the substrate (1) by using a curtain coater as a slot caster Drying a surface mass of 6.0 g / m 2 for the top coat (3) is measured.
  • the recording material thus prepared is carried out by a calender with a press nip at set line pressure of 120 kN / m, the one press roll elastic and the other press roll are hard and heatable.
  • the latter has a heated surface temperature of 100 ° C. in the press nip, which is brought into contact with the side of the ink jet recording material to be smoothed, which has both lower and upper coating (2. 3).
  • a gloss value of 30% can be determined on the side having both the undercoat and topcoat (2, 3) measured according to Tappi 450 or ISO 2813 with a reflection angle of 60 ° ,
  • such an ink jet recording material has a good resistance to moisture and water of the ink jet print image, and is printable at high speed by ink jet printers and also by offset printing. The tasks could be fulfilled so well.

Landscapes

  • Ink Jet (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Abstract

L'invention concerne un matériau d'enregistrement par jet d'encre qui présente au moins un substrat plan (1) ayant une face recto (a) et une face verso (b) située à l'opposé de la face recto (a), un revêtement inférieur (2) positionné au-dessus du recto (a) du substrat (1) et/ou en dessous du verso (b) du substrat (1), ainsi qu'un revêtement supérieur (3) positionné au-dessus du revêtement inférieur (2) du côté du recto (a) du substrat (1) et/ou en dessous du revêtement inférieur (2) du côté du verso (b) du substrat (1). Le matériau d'enregistrement par jet d'encre selon l'invention est caractérisé en ce que l'au moins un revêtement inférieur (2) et l'au moins un revêtement supérieur (3) présentent tous deux respectivement un pigment inorganique et en ce que l'au moins un revêtement inférieur (2) présente, outre le pigment inorganique, également un pigment organique présentant des creux. L'invention concerne également un procédé de production d'un tel matériau d'enregistrement par jet d'encre.
PCT/EP2013/050725 2012-01-17 2013-01-16 Matériau d'enregistrement par jet d'encre WO2013107764A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12151472.3A EP2617580A1 (fr) 2012-01-17 2012-01-17 Matériau d'enregistrement à jet d'encre
EP12151472.3 2012-01-17

Publications (1)

Publication Number Publication Date
WO2013107764A1 true WO2013107764A1 (fr) 2013-07-25

Family

ID=47605496

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/050725 WO2013107764A1 (fr) 2012-01-17 2013-01-16 Matériau d'enregistrement par jet d'encre

Country Status (2)

Country Link
EP (1) EP2617580A1 (fr)
WO (1) WO2013107764A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020118267A1 (en) * 1998-12-03 2002-08-29 Olympus Optical Co., Ltd. Ink jet printing medium for an embossed interior decorating member
US20040096598A1 (en) * 2000-10-16 2004-05-20 Mitsubishi Paper Mill Limited Ink-jet recording medium and method for production thereof
US20050031805A1 (en) * 2003-06-17 2005-02-10 Fugitt Gary P. Pigment selection for photographic base stock
JP2005280095A (ja) * 2004-03-30 2005-10-13 Mitsubishi Paper Mills Ltd インクジェット記録用紙

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2883299B2 (ja) 1994-09-16 1999-04-19 キヤノン株式会社 被記録媒体、その製造方法、被記録媒体を用いたインクジェット記録方法
JP3591969B2 (ja) 1995-03-15 2004-11-24 キヤノン株式会社 インクジェット用記録媒体及びこれを用いたカラーインクジェット記録方法
US5912071A (en) 1996-04-24 1999-06-15 Asahi Glass Company Ltd. Recording medium and method for its production
DE19618607C2 (de) 1996-05-09 1999-07-08 Schoeller Felix Jun Foto Aufzeichnungsmaterial für Tintenstrahl-Druckverfahren
JP3980169B2 (ja) 1997-05-02 2007-09-26 イルフォード イメージング スウィツアランド ゲーエムベーハー インクジェット印刷用記録シート
JP3707966B2 (ja) 1998-10-26 2005-10-19 三菱製紙株式会社 インクジェット記録シート及びその製造方法
ATE309916T1 (de) 2003-09-08 2005-12-15 Ilford Imaging Ch Gmbh Aufzeichnungsmaterial für den tintenstrahldruck

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020118267A1 (en) * 1998-12-03 2002-08-29 Olympus Optical Co., Ltd. Ink jet printing medium for an embossed interior decorating member
US20040096598A1 (en) * 2000-10-16 2004-05-20 Mitsubishi Paper Mill Limited Ink-jet recording medium and method for production thereof
US20050031805A1 (en) * 2003-06-17 2005-02-10 Fugitt Gary P. Pigment selection for photographic base stock
JP2005280095A (ja) * 2004-03-30 2005-10-13 Mitsubishi Paper Mills Ltd インクジェット記録用紙

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