WO2007004454A1 - Procédé pour la fabrication d’une feuille d’impression par jet d’encre - Google Patents

Procédé pour la fabrication d’une feuille d’impression par jet d’encre Download PDF

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Publication number
WO2007004454A1
WO2007004454A1 PCT/JP2006/312707 JP2006312707W WO2007004454A1 WO 2007004454 A1 WO2007004454 A1 WO 2007004454A1 JP 2006312707 W JP2006312707 W JP 2006312707W WO 2007004454 A1 WO2007004454 A1 WO 2007004454A1
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WO
WIPO (PCT)
Prior art keywords
recording sheet
ink
jet recording
receiving layer
ink jet
Prior art date
Application number
PCT/JP2006/312707
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English (en)
Japanese (ja)
Inventor
Mitsuru Kobayashi
Eriko Endo
Ryu Kitamura
Kumiko Kado
Original Assignee
Oji Paper Co., Ltd.
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 Oji Paper Co., Ltd. filed Critical Oji Paper Co., Ltd.
Publication of WO2007004454A1 publication Critical patent/WO2007004454A1/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
    • 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
    • B41M5/52—Macromolecular coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
    • B41M2205/12—Preparation of material for subsequent imaging, e.g. corona treatment, simultaneous coating, pre-treatments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
    • B41M2205/38—Intermediate layers; Layers between substrate and imaging layer

Definitions

  • the present invention relates to a method for producing a recording sheet applied to the ink jet recording method.
  • This application is based on Japanese Patent Application Nos. 2005-193534 and July 12, 2005 filed on July 1, 2005. Claimed priority based on Japanese Patent Application No. 2005-203719 filed, the contents of which are incorporated herein.
  • An ink jet recording method in which water-based ink is ejected with a fine nozzle force directed toward a recording sheet to form an image on the recording surface of the sheet has less noise during recording, and it is easy to form a full color image. Therefore, it is widely used in terminal printers, facsimiles, plotters, form printing, and the like because of its high-speed recording capability and lower recording costs than other printing apparatuses.
  • an ink jet recording sheet having an ink receiving layer is widely used.
  • the ink jet recording sheet is required to have advanced characteristics due to the rapid spread of printers, high-definition and high-speed, and the advent of digital cameras.
  • Patent Document 1 proposes a method of manufacturing an ink jet recording sheet that satisfies the above requirements.
  • this method for producing an ink jet recording sheet first, an undercoat forming coating solution containing fine particles and a water-soluble resin is coated on a support to form an undercoat layer, and borax is formed on the undercoat layer. Apply a coating solution containing a cross-linking agent at a concentration of 4% by weight or less. Then, before the coated crosslinking agent-containing coating solution is dried, an ink receiving layer forming coating solution containing fine particles and a water-soluble resin is applied thereon to form an ink receiving layer.
  • the unevenness on the surface of the support can be reduced by the undercoat layer. Therefore, the smoothness of the surface of the ink receiving layer formed thereon can be improved and the inkjet recording sheet can be improved.
  • the gloss of the toner can be increased.
  • the borax in the coating solution containing a crosslinking agent can be used to crosslink the water-soluble resin in the undercoat layer and the ink receiving layer to increase the film strength. As a result, the undercoat layer and the ink receiving layer can be thickened and the amount of ink retained can be increased, so that the image quality can be improved.
  • the ink absorbency can be enhanced by the undercoat layer containing fine particles.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2004-74576
  • the inkjet recording sheet manufactured by the manufacturing method described in Patent Document 1 has excellent gloss, image quality, and ink absorbability, but has a problem of being easily broken.
  • the coating amount of the crosslinking agent is increased, a gelled product is formed when the ink-receiving layer forming coating solution is applied, and the gelled product is applied to the die coating machine, etc. In some cases, the die coating becomes difficult.
  • the present invention is capable of producing an ink jet recording sheet that is excellent in gloss, image quality, and ink absorbency, and is prevented from being cracked, and also increases the coating amount of a coating liquid for forming an ink receiving layer. It is another object of the present invention to provide a method for producing an ink jet recording sheet that is excellent in die coatability even when the coating amount of the crosslinking agent is increased.
  • the undercoat layer is crosslinked and hardened by a crosslinking agent, whereby the ink jet recording sheet is easily broken, and the crosslinking agent and the water-soluble coating It has been found that gely deposits are formed when the fat reacts rapidly. Based on these findings, the inventors have invented the following inkjet recording sheet manufacturing methods [1] to [7].
  • a method for producing an ink jet recording sheet comprising:
  • the ink jet recording sheet according to [1] wherein the coating solution for forming the undercoat layer is applied such that the coating amount of the crosslinking agent is 0.1 lg / m 2 or more in terms of solid content. Manufacturing method.
  • Fine particle force in ink-receiving layer-forming coating liquid Amorphous silica, aluminosilicate, alumina, and at least one selected from the group force that also includes alumina hydrate power [1] to [4]
  • an ink jet recording sheet of the present invention it is possible to produce an ink jet recording sheet that is excellent in gloss, image quality, ink absorbability!
  • the force is excellent in die coating even when the coating amount of the crosslinking agent is increased in order to increase the coating amount of the ink receiving layer forming liquid.
  • the undercoat layer-forming coating liquid is a liquid containing fine particles, a binder, and a crosslinking agent that does not crosslink the binder (hereinafter abbreviated as a crosslinking agent).
  • a crosslinking agent a crosslinking agent that does not crosslink the binder
  • examples of the solvent contained in the undercoat layer forming coating solution include water or water. An aqueous solvent to which a small amount of an organic solvent is added can be mentioned.
  • a gas permeable support or a gas impermeable support can be used, but a gas impermeable support is preferred. This is because when a non-air-permeable support is used, it is possible to suppress a so-called cockling defect that the recording paper stretches and undulates due to the influence of a solvent such as moisture contained in the ink. However, in the case of a non-permeable support, since the ink cannot be absorbed by the support, it is necessary that the ink receiving layer has sufficient absorbency.
  • the support may be transparent or opaque.
  • the support include cellophane, polyethylene, polypropylene, soft polyvinyl chloride.
  • -Films such as paper, hard poly salt resin, polyester, fine paper, art paper, coated paper, cast coated paper, foil paper, kraft paper, polyolefin resin coated paper, impregnated paper, vapor-deposited paper, water-soluble Paper such as paper, sheets of metal foil, synthetic paper, etc. are exemplified, but art paper, coated paper, baryta paper, photographic paper base paper, synthetic paper can be used to make a photo-like ink jet recording sheet. Polyolefin resin coated paper is preferred. Of these, synthetic paper and polyethylene resin-coated paper are particularly preferred, especially polyethylene resin-coated paper kneaded with acid-titanium.
  • Supports with RC paper strength are particularly preferred because the finished appearance is equivalent to photographic paper.
  • RC paper is used as the support, the effects of the present invention are particularly exhibited.
  • a support coated with gelatin is also preferred.
  • the thickness of the polyethylene layer is preferably 3 to 50 ⁇ m, more preferably 5 to 30 ⁇ m. If the thickness of the polyethylene layer is less than 3 ⁇ m, there will be many defects such as polyethylene holes when coating the resin, and it will be difficult to control the thickness immediately, and smoothness will be obtained. On the other hand, if it exceeds 50 / zm, the cost will increase, but the resulting effect is uneconomical.
  • Examples of the fine particles contained in the coating solution for forming the undercoat layer include amorphous silica (including synthetic amorphous silica produced by a wet method and a dry method, and cation-modified silica such as alumina), and amorphous.
  • amorphous silica including synthetic amorphous silica produced by a wet method and a dry method, and cation-modified silica such as alumina
  • amorphous silica including synthetic amorphous silica produced by a wet method and a dry method, and cation-modified silica such as alumina
  • Amorphous silica thione compound aggregate particles, kaolin, clay, calcined sauce, zinc oxide, tin oxide, titanium dioxide, magnesium sulfate, hydroxyaluminum hydroxide, aluminosilicate, alumina , Alumina hydrate, Calcium carbonate, Satin white, Aluminum silicate, Smectite, Zeolite, Magnesium silicate, Magnesium carbonate, Magnesium oxide, Diatomaceous earth, Styrenic plastic pigment, Urea resin plastic pigment, Benzoguanamine Examples include plastic pigments.
  • amorphous silica, amorphous silica-cationic composite aggregate particles, kaolin, clay, calcined clay, titanium dioxide It is more preferable to use aluminosilicate, alumina, hydrated alumina or calcium carbonate.
  • amorphous silica and calcium carbonate are preferably used.
  • calcium carbonates heavy calcium carbonate is particularly preferable. The effect of the present invention can be obtained in both forms of amorphous silica and calcium carbonate alone or mixed.
  • the average secondary particle diameter of the fine particles is preferably 0.7 m or less, particularly from the viewpoint of gloss.
  • noda examples include gelatin, celluloses, starch, and water-dispersible rosin.
  • a water-dispersible resin is preferable because it can prevent the ink jet recording sheet from being easily broken by the crosslinking agent.
  • the water-dispersible resin include vinyl copolymers such as styrene-butadiene copolymer, methyl methacrylate-butadiene copolymer co-polymer latex, acrylic polymer latex, and styrene-acetate butyl copolymer. Polymer latex etc. are mentioned.
  • the glass transition temperature of water-dispersible resin is preferably 50-50 ° C, more preferably 30-30 ° C.
  • Crosslinking agent examples of the crosslinking agent contained in the undercoat layer forming coating solution include boron compounds, epoxy compounds, glycidyl compounds, zirconium compounds, aluminum compounds, chromium compounds, and the like.
  • cross-linking agents when combined with polybulualcohol, the thickening or gelling progresses rapidly, so boron compounds preferred by boron compounds and
  • boric acid examples include orthoboric acid, metaboric acid, hypoboric acid, tetraboric acid, and pentaboric acid. These sodium salts, potassium salts, and ammonium salts may also be used. Among these, orthoboric acid and disodium tetraborate are preferable.
  • Borax is a hydrous borate mineral of sodium and its composition is Na B O-10H O.
  • Na B 2 O sodium tetraborate
  • the concentration of the crosslinking agent in the coating solution for forming the undercoat layer is preferably 0.001 to 20% by mass.
  • the concentration of the crosslinking agent is 0.001% by mass or more, the water-soluble resin described below can be sufficiently crosslinked by the crosslinking agent. On the other hand, if it is 20% by mass or less, excessive crosslinking can be prevented.
  • the binder content in the undercoat-forming coating liquid is preferably 1 to 200 parts by mass with respect to 100 parts by mass of the fine particles. Noinda content strength If the amount is 1 part by mass or more with respect to 100 parts by mass of fine particles, the coating strength can be increased, and if it is 200 parts by mass or less, desired ink absorptivity can be obtained.
  • a fluorescent dye may be added to the undercoat layer forming coating liquid to increase the whiteness of the ink jet recording sheet, or a colored pigment may be added to adjust the hue. Good.
  • Examples of the method of applying the coating liquid for forming the undercoat layer on the support include, for example, blade coater, air knife co 1 ⁇ "' ⁇ ", mouth 1 ⁇ "noreco 1 ⁇ " ta " ⁇ ", no 1 ⁇ "co 1 ⁇ "Ta ' ⁇ ” Gravure 1 ⁇ ' ⁇ Mouth, Sodble ⁇ ⁇ "Doko 1 ⁇ Ta 1 ⁇ , Lipco 1 ⁇ Ta ' ⁇ , Daiko 1 ⁇ ' ⁇ , Power ' ⁇ Tenko 1 ⁇ ta ' ⁇ , slide movie 1 ⁇ doko 1 ⁇ ' ⁇ , and the like.
  • the coating amount of the undercoat layer forming coating solution is preferably such that the coating amount of the crosslinking agent is not less than 0.1 lgZm 2 in terms of solid content. If the coating amount of the crosslinking agent is 0.1 lgZm 2 or more, the film strength and water resistance of the ink receiving layer can be sufficiently secured. Furthermore, the coating amount of the crosslinking agent is preferably an amount that is 3. OgZm 2 or less in terms of solid content. If the coating amount of the crosslinking agent is 3. OgZm 2 or less, excessive crosslinking of the water-soluble resin can be prevented, and the ink jet recording sheet can be prevented from cracking.
  • the coating amount of the undercoat layer forming coating solution is preferably 1.0 to 30 gZm 2 in terms of solid content, more preferably 2.0 to 20 gZm 2 .
  • the applied undercoat layer forming coating solution is subjected to a drying step or a drying step! /
  • the second step can be performed. Also, in the drying process of the coating solution for forming the undercoat
  • the solvent may not be completely removed and a part of the solvent may remain.
  • it does not restrict
  • an ink receiving layer forming coating solution containing fine particles and a water-soluble rosin that can be cross-linked by the cross-linking agent is applied onto an undercoat layer.
  • a receiving layer is formed.
  • the fine particles contained in the ink receiving layer forming coating solution the same fine particles as those contained in the undercoat layer forming coating solution can be used.
  • the fine particles contained in the ink-receiving layer-forming coating liquid are composed of amorphous silica, aluminosilicate, alumina, and alumina hydrate because the ink jet recording sheet obtained can easily balance gloss and ink absorbability. It is preferable to include at least one selected group power as the main component.
  • the average secondary particle size of the fine particles is preferably 0.7 / zm or less, particularly from the viewpoint of gloss.
  • water-soluble rosin examples include polybulal alcohol, cation-modified polybulal alcohol, silyl-modified polybulal alcohol, and polyvinyl alcohol.
  • polyvinyl alcohol is preferable from the viewpoint of ink absorbability, water resistance, and prevention of cracks. It is preferable that the polybulal alcohol has a degree of polymerization of 3000 to 5000. If the degree of polymerization is less than 3000, the resulting ink-receiving layer tends to have insufficient water resistance, and those exceeding 5000 are difficult to obtain in practice.
  • the water-soluble coagulant is preferably used in an amount of 1 to L00 parts by mass, more preferably 5 to 50 parts by mass with respect to 100 parts by mass of the fine particles.
  • the mass ratio between the water-soluble rosin and the crosslinking agent is preferably 20: 1 to 1:20, more preferably 10: 1 to 1:10. By setting the mass ratio within this range, an ink jet recording sheet excellent in crack prevention, anti-aging resistance, and ink absorbability can be obtained.
  • the ink-receiving layer-forming coating liquid contains, for example, water or an aqueous solvent obtained by adding a small amount of an organic solvent to water.
  • the ink-receiving layer-forming coating liquid may contain a water-dispersible resin within the range in which the object of the present invention is achieved.
  • a water-dispersible resin within the range in which the object of the present invention is achieved.
  • the water-dispersed resin include the same as the water-dispersible resin in the binder.
  • the ink receiving layer forming coating liquid may contain an ink fixing agent.
  • the ink fixing agent include polyalkylene polyamines such as polyethylene amine and polypropylene polyamine, or derivatives thereof, tertiary amino group and acryl resin having quaternary ammonium group, and cationic property such as diacrylamine. Examples thereof include resins, aluminum group-containing organosilane compounds, and aluminum compounds such as polysalts and aluminum.
  • the content of the ink fixing agent is preferably 1 to 30 parts by mass and more preferably 5 to 20 parts by mass with respect to 100 parts by mass of the fine particles.
  • the ink-receiving layer-forming coating solution may contain a surfactant!
  • Surfactants include ionic surfactants, cationic surfactants, and nonionic surfactants. Any of the agents may be used. Among the above surfactants, non-ionic surfactants are preferred because of their high affinity with ink jet printer inks. Furthermore, among non-ionic surfactants, acetylene glycol-based surfactants are preferred. I prefer the agent.
  • the coating liquid for forming the ink receiving layer contains various auxiliary agents such as various dispersants, thickeners, antifoaming agents, preservatives, antistatic agents, preservatives, fluorescent dyes, and colored pigments. May be included
  • the same coating method and drying method as the undercoat layer forming coating solution can be applied.
  • the coating amount of the ink receiving layer forming coating liquid, when the support is impermeable support, in click the coating amount of the receiving layer is preferably tool permeability that amount becomes 10 ⁇ 40GZm 2 In the case of a tempered support, the amount is preferably 5 to 25 gZm 2 . If the coating amount is not less than the lower limit value, sufficient ink absorbability and image quality can be ensured, and if it is not more than the upper limit value, cracking of the ink receiving layer can be prevented. Moreover, if the coating amount is within the above range, an image quality comparable to a silver salt photograph can be obtained.
  • a gloss layer containing fine particles may be formed on the ink receiving layer in order to increase gloss.
  • the fine particles in the gloss layer are not particularly limited, but colloidal silica, gas phase method silica, and aluminate are preferable because excellent gloss can be obtained.
  • the ink fixing function is not necessarily required, but fixing properties can be improved by selecting cationic fine particles.
  • cationic fine particles cation-modified colloidal silica, vapor phase silica, aluminate, or the like is preferable.
  • aluminate oxides vapor phase (fumed) aluminate oxides are more preferred.
  • the form of the fine particles is preferably colloidal.
  • Either a monodisperse or an agglomerated particle dispersion may be used, but in order to obtain high printing density and high gloss, a monodisperse or an agglomerated particle dispersion mainly having a small particle diameter Preferably used.
  • the glossy layer may appropriately contain the water-soluble resin as long as the ink absorbability is not impaired. Moreover, the above-mentioned ink fixing agent can also be contained as needed.
  • a gloss layer forming coating liquid containing fine particles and a solvent is applied onto the ink receiving layer, and the coated coating liquid is in a wet state.
  • a casting method obtained by pressure bonding to a heated mirror drum and drying.
  • various release agents may be appropriately added to the gloss layer forming coating solution.
  • the amount of release agent added is preferably 0.5 to: LO parts by mass with respect to 100 parts by mass of fine particles.
  • the support When the support is a non-permeable support or a low-permeable support, it is pressed against the mirror drum immediately after coating the gloss layer forming coating solution (for example, International Publication No. 03ZO 39881). Dry as shown in the brochure) and dry with a drying device in the subsequent process.
  • the gloss layer forming coating solution for example, International Publication No. 03ZO 39881.
  • the coating amount as the solid content of the gloss layer coating liquid for forming preferably in the range of 0. l ⁇ 10gZm 2 instrument 0. 2 ⁇ 5gZm 2 is even more preferably more preferably instrument 0. 5 ⁇ 2gZm 2. If the coating amount is too small, the coating film will be thin and interference color due to light will be generated immediately. On the other hand, if the coating amount is too large, the ink absorption speed will be remarkably decreased and the transparency may be decreased. .
  • an undercoat layer-forming coating solution is applied onto a support to form an undercoat layer in which fine particles are bound with a binder. It can.
  • the unevenness of the support surface can be reduced, the surface of the ink receiving layer can be smoothed, and the glossiness of the ink jet recording sheet can be increased.
  • the undercoat layer-forming coating solution contains a crosslinking agent that does not crosslink the fine particles, the binder, and the binder, crosslinking of the undercoat layer can be suppressed. As a result, the undercoat layer can be prevented from becoming hard, so that the ink jet recording sheet can be prevented from being broken.
  • the cross-linking agent in the undercoat layer may be transferred into the ink-receiving layer-forming coating solution by the solvent in the ink-receiving layer-forming coating solution. it can.
  • the water-soluble resin in the ink receiving layer can be cross-linked to increase the film strength, the ink receiving layer can be thickened to improve the image quality of the ink jet recording sheet.
  • the method for producing an ink jet recording sheet it is possible to produce an ink jet recording sheet that is excellent in gloss, image quality, and ink absorptivity, and also prevents cracking.
  • a coating liquid for forming an undercoat layer is applied, and after drying, a coating liquid for forming an ink receiving layer is applied.
  • the reaction between the agent and the water-soluble resin in the ink-receiving layer-forming coating solution is delayed. Therefore, even if the coating amount of the crosslinking agent in the coating solution containing the crosslinking agent is increased in order to make the ink receiving layer thicker, a gelled product is formed when the coating solution for forming the ink receiving layer is applied. Excellent die coatability.
  • a 20% aqueous dispersion of gel silica (Grace Devison, trade name: Silojet 703A, average primary particle size: 12 nm, average secondary particle size: about 300 nm) is prepared, and silica sol, a silica sol of the wet method.
  • Gel silica Gram Devison, trade name: Silojet 703A, average primary particle size: 12 nm, average secondary particle size: about 300 nm
  • ⁇ fumed silica (trade name: Leo port seal QS- 30, average primary particle diameter of 10 nm, specific surface area of 300 meters 2 Zg, manufactured by Tokuyama Corp.) was dispersed in water pulverized by a sand mill, and Nanomizer one (trade name: Nanomizer 1) (manufactured by Nanomizer Co., Ltd.) was used, and pulverization and dispersion were repeated.
  • 10 parts of diallyldimethylammonium chloride (trade name: Ducens CP-103, manufactured by Senriki Co., Ltd.) is added as an ink fixing agent.
  • CSF QIS P— 8121 is mixed with softwood bleached kraft pulp (NBKP) beaten at about 250m and hardwood bleached kraft pulp (LBKP) beaten at about 250m with CSF at a mass ratio of 2: 8.
  • a pulp slurry having a concentration of 0.5% was prepared.
  • cationized starch (2.0%), alkyl ketene dimer (0.4%), cationized polyacrylamide resin (0.1%), and polyamide polyamine chlorohydrin with respect to the absolute dry mass of the pulp. 0.7% of rosin was added and dispersed with sufficient stirring.
  • the pulp slurry having the above composition was made into paper with a long net machine and passed through a drier, a size press and a machine calendar to produce a base paper having a basis weight of 180 gZm 2 and a density of 1. OgZcm 3 .
  • the size press solution used in the size press process is a mixture of carboxyl-modified polybulal alcohol and sodium chloride salt at a mass ratio of 2: 1, and this is mixed in water and dissolved by heating to a concentration of 5%. It was prepared. Then, the size press solution to both sides of the paper, and 25 ml / m 2 coated with total support A: was obtained (air permeability 300 sec).
  • the following polyolefin resin composition 1 mixed and dispersed with a Banbury mixer is applied to the felt surface side of the support A so that the coating amount is 25 gZm 2. Coating was performed by a melt extruder (melting temperature: 320 ° C.) having a mold die. Further, the following polyolefin resin composition 2 was coated on the wire side of the support A with the melt extruder so that the coating amount was 20 g / m 2 . After that, the felt side is cooled and solidified with a mirror-like cooling roll, and the wire side is cooled with a rough cooling roll. The smoothness (Oken type, J. TA PPI No. 5) is 6000 seconds, opacity (JIS P8138) obtained 93% of the resin-coated support B.
  • Linear low-density polyethylene (density 0.926 gZcm 3 , melt index 20 gZ 10 minutes) 35 parts, low-density polyethylene (density 0.919 gZcm 3 , melt index 2 gZ 10 minutes) 50 parts, anatase type titanium dioxide (trade name) : A-220, manufactured by Ishihara Sangyo Co., Ltd.) 15 parts, stearic acid 0.1 part of zinc, antioxidant (trade name: Irganox 1010, manufactured by Ciba Specialty Chemicals) 0.03 part, ultramarine (trade name: blue and ultramarine blue NO. 2000, manufactured by Daiichi Kasei) 0.09 part, Fluorescent whitening agent (trade name: UVITEX OB, manufactured by Ciba Specialty Chemicals) 0.3 part was mixed to obtain a polyolefin resin composition 1.
  • a commercially available polypropylene synthetic paper (trade name: YUPO GWG-140, manufactured by YUPO Corporation) was used as the support C.
  • Undercoating layer-forming coating solution A was prepared by mixing and stirring 100 parts of a 20% aqueous dispersion of silica sol A, 30 parts of a 50% aqueous dispersion of styrene-butadiene copolymer latex, and 100 parts of a 5% aqueous solution of borax. Then, this undercoat layer-forming coating solution A was applied onto support B using a Mayer bar so that the coating amount was 10. OgZm 2 and dried to provide an undercoat layer.
  • An ink jet recording sheet was obtained in the same manner as in Example 1 except that the support A was used in place of the support B in Example 1.
  • Example 1 except that Support C was used instead of Support B, the same as Example 1 Thus, an ink jet recording sheet was obtained.
  • Example 1 an inkjet recording sheet was obtained in the same manner as in Example 1 except that styrene butyl acrylate copolymer latex was used instead of styrene butadiene copolymer latex.
  • Example 2 An ink jet recording sheet was obtained in the same manner as in Example 1 except that in Example 1, 170 parts of boric acid 3% aqueous solution was used instead of 100 parts of borax 5% aqueous solution.
  • An ink jet recording sheet was obtained in the same manner as in Example 1 except that instead of silica sol A, a titanium dioxide fine particle dispersion was used.
  • silica dispersion 100 parts of cationic colloidal silica (trade name: Snowtex AK, manufactured by Nissan Chemical Industries) and 3 parts of distearyldimethylammonium chloride were mixed and diluted to 10% to prepare a silica dispersion. Next, this silica dispersion was applied onto the ink receiving layer of the ink jet recording sheet obtained in Example 1. While wet, the coated surface was pressed against a chrome-plated mirror-finished drum with a surface temperature of 100 ° C at a linear pressure of 2000 N / cm to form a glossy layer. A recording sheet was obtained. The thickness of the glossy layer was 1 ⁇ m.
  • Example 1 0.3 g / m 2 of gelatin was applied to the resin coating layer on the felt side of the support B, and an undercoat layer-forming coating solution A was applied thereon to form an undercoat layer. Except for the above, an ink jet recording sheet was obtained in the same manner as in Example 1.
  • An ink jet recording sheet was obtained in the same manner as in Example 1 except that the coating amount of the coating liquid A for forming the undercoat layer was changed from 10. OgZm 2 to 1.5 g / m 2 .
  • Example 1 the coating amount of the coating liquid A for forming the ink receiving layer was changed from 22 gZm 2 to 15 gZm 2 An ink jet recording sheet was obtained in the same manner as in Example 1 except that the above was changed.
  • Disperse gel silica (trade name: Silojet ED3, manufactured by Grace) with an average particle size of approximately 5 ⁇ m in a 2% dispersant (trade name: F-130, manufactured by San Nopco) using a homomixer. While adding gradually, 10% dispersion A was prepared. Add 50% light calcium carbonate slurry (trade name: Brilliant—S15, manufactured by Shiraishi Kogyo Co., Ltd.) with an average particle size of 0.55 ⁇ m to dispersion A so that the mass ratio of silica to calcium carbonate is 25Z75. A 40% dispersion B was prepared.
  • Undercoating layer forming coating solution B was prepared by mixing and stirring 100 parts of dispersion B, 30 parts of styrene-butadiene copolymer latex (40% emulsion), 5 parts of starch, and 40 parts of borax (7% aqueous solution).
  • silica sol B Mix 100 parts of silica sol B with 18 parts of 5% polybulualcohol (Kuraren clay, trade name: PV A-135H, polymerization degree: 3500, ken degree: 99% or more) to form a coating solution for forming an ink receiving layer.
  • polybulualcohol Karl Fischer clay, trade name: PV A-135H, polymerization degree: 3500, ken degree: 99% or more
  • the ink-receiving layer was formed by coating and drying on the undercoat layer so that the coating amount was 15 gZm 2 with a die coater.
  • Cationic colloidal silica with an average particle size of 45 nm (trade name: Snowtex AKL, manufactured by Nissan Chemical Industries, Ltd.) 100 parts, 3 parts distearyldimethylammonium chloride and 5% polybutyl alcohol (made by Kurarene soil, product name: PVA— 224) 5 parts was mixed to prepare 5% aqueous dispersion C. Next, this aqueous dispersion C was pressed onto the ink receiving layer at a linear pressure of 2000 NZcm on a chromium-plated mirror-finished drum with a surface temperature of 100 ° C. by the dip method, and dried and peeled to form a luminous layer.
  • aqueous dispersion C was pressed onto the ink receiving layer at a linear pressure of 2000 NZcm on a chromium-plated mirror-finished drum with a surface temperature of 100 ° C. by the dip method, and dried and peeled to form a luminous layer.
  • Heavy calcium carbonate with an average particle size of 8 ⁇ m (dry dispersion of limestone raw material, manufactured by Taiheiyo Cement) was dispersed in water to prepare a 60% dispersion, and 100 parts of calcium carbonate was added to this dispersion.
  • Carry out 0.5 parts of ⁇ ⁇ -on dispersant (trade name: F-130, manufactured by San Nopco Co.), disperse with homomixer, and further crush and disperse with a sand grinder, then centrifuge. Coarse particles were settled by this method.
  • the dispersion from which the coarse particles were removed was further subjected to the above dispersion and pulverization step to obtain a 50% dispersion D having an average particle diameter of 0.5 m.
  • Dispersion A was added to Dispersion D so that the mass ratio of silica and calcium carbonate was 25Z75 to prepare 40% Dispersion E.
  • An inkjet recording sheet was prepared in the same manner as in Example 11 except that the dispersion B was changed to the dispersion E.
  • Alkaline colloidal silica manufactured by Nissan Chemical Co., Ltd., trade name: ST-20L, average particle size 0.04 5 m, pore volume 0.2 mlZg, char-on
  • acrylic as binder -Based emulsion type adhesive (Madesei Chemical Co., Ltd., trade name: JK7000) 20 parts and borax 13 parts are mixed in water to prepare an aqueous dispersion (concentration: 20% by mass), and an undercoat layer forming coating solution C got.
  • the undercoat layer forming coating solution C was applied with a bar so that the dry coating amount was 7 gZm 2 and dried to obtain an undercoat layer.
  • silica fine particle dispersion liquid F 100 parts of this silica fine particle dispersion.
  • 10 parts of a cationic compound having a 5-membered ring amidine structure product name: SC-700M, molecular weight: 30,000
  • SC-700M 5-membered ring amidine structure
  • Polymer silica composite particle dispersion liquid F was obtained.
  • the pore volume of this composite particle by BET was 1. lmlZg.
  • the ink receiving layer-forming coating solution C was applied, the ink receiving layer was hydrogenated, and dried with a hot air dryer at 90 ° C.
  • the dry coating amount of the ink receiving layer was 18 gZm 2.
  • the ink receiving layer is placed on the mirror drum side, and a release agent (ammonium oleate is provided between the ink receiving layer surface and the mirror drum).
  • a release agent ammonium oleate is provided between the ink receiving layer surface and the mirror drum.
  • aqueous solution was prepared. This aqueous solution was passed through a column packed with a hydrogen-type cation exchange resin (trade name: Diaion SK-1BH, manufactured by Mitsubishi Chemical Co., Ltd.) to prepare an active aqueous solution of active acid.
  • a hydrogen-type cation exchange resin trade name: Diaion SK-1BH, manufactured by Mitsubishi Chemical Co., Ltd.
  • the SiO 2 concentration in the obtained aqueous active keying acid solution was 4.0% and the pH was 2.9. Also,
  • the Na 2 O equivalent concentration was 0.1% or less.
  • the seed solution was mixed with 0.015% ammonia.
  • the sample was added and stabilized, and heated to 100 ° C.
  • a total of 550 g of the above-mentioned aqueous active acid solution was added at a rate of 1.5 gZ.
  • the solution was kept at 100 ° C. and heated to reflux for 9 hours to obtain a silica fine particle dispersion.
  • This dispersion was concentrated with an evaporator to prepare a 10% silica fine particle dispersion G.
  • the silica particle size was 0.4 and the pore volume by BET was 0.4 mlZg.
  • Example 14 except that the alkaline colloidal silica of the coating liquid C for forming the undercoat layer was changed to the wet process silica of the dispersion G (average particle size 0.1 m, pore volume 0.4 ml / g). In the same manner as in Example 14, an ink jet recording sheet was produced.
  • Example 14 10 parts of the alkaline colloidal silica of the coating solution C for forming the undercoat layer was mixed with kaolin (manufactured by Engelhard, trade name: URTLA WHITE90, average particle size 0.7 111, pore volume 0.2 mlZg).
  • An ink jet recording sheet was prepared in the same manner as in Example 14 except that a mixed pigment of colloidal silica and kaolin was used.
  • Example 14 20 parts of the colloidal silica of the undercoat layer-forming coating solution C were mixed with titanium dioxide (manufactured by Sakai Chemical Industry Co., Ltd., trade name: R-21, average particle size of 0.3, pore volume of 0.5 ml An ink jet recording sheet was prepared in the same manner as in Example 14 except that a mixed pigment of colloidal silica and titanium dioxide dioxide was used instead of / g).
  • Example 14 the inorganic pigment (cationic polymer-silica composite particle) of the coating liquid C for forming the ink receiving layer was mixed with vapor phase alumina (trade name: PG003, average particle size: 0.25 m, manufactured by CABOT).
  • vapor phase alumina trade name: PG003, average particle size: 0.25 m, manufactured by CABOT.
  • An ink jet recording sheet was produced in the same manner as in Example 14 except that the pore volume was changed to 0.9 mlZg).
  • the coating liquid A for ink-receiving layer formed thereon was coated with borax 6% aqueous solution at LOgZm 2, while the borax solution was applied does not dry, the coating liquid A for ink-receiving layer formed thereon, a die coater
  • the coating was applied so that the coating amount was 22 gZm 2 and dried to provide an ink receiving layer to obtain an ink jet recording sheet.
  • the thickness of the ink receiving layer in this inkjet recording sheet is 37 ⁇ m.
  • Example 1 30 parts of an 8% aqueous solution of polybutyl alcohol having a polymerization degree of 2400 and a hatching degree of 98% (trade name: PVA-124, manufactured by Kralene Earth) was added to the coating liquid A for forming the undercoat layer. Except for this, an ink jet recording sheet was produced in the same manner as in Example 1. However, since borax and polyvinyl alcohol in the undercoat layer-forming coating solution caused gelling, the undercoat layer-forming coating solution could not be applied on the support. Therefore, production of inkjet recording sheets was discontinued.
  • An inkjet recording sheet was produced in the same manner as in Comparative Example 1 except that the support A was changed to the support B.
  • the die coating suitability when the ink receiving layer forming coating solution was applied was visually evaluated.
  • the degree of cracking of the ink receiving layer was visually evaluated.
  • the degree of cracking of the ink receiving layer was visually evaluated.
  • the 75 degree glossiness of the ink receiving layer surface of the inkjet recording sheet was measured by the method described in JIS P8142.
  • Green solid printing was performed with an inkjet printer PIXUS iP4100 Canon), and the degree of ink absorption in the solid printing portion was visually evaluated.
  • BCI-7Bk ⁇ ⁇ BCI-7C, BCI-7M, BCI-7Y and BCI-3eBk manufactured by Canon were used as ink cartridges.
  • ⁇ The power at which a slight unevenness is seen in the solid print part.
  • Black solid printing was performed with an inkjet printer PIXUS iP8600 (manufactured by Canon Inc.), and the black solid printing portion was measured using a Darretag Macbeth reflection densitometer (Darretag Macbeth, RD-19I). The numbers shown in the table are average values of five measurements.
  • Canon BCI-7Bk, BCI-7C, BCI-7M, BCI-7Y, BCI-7 PC, BCI-7PM, BCI-7R and BCI-7G were used as ink cartridges.
  • Black, cyan, magenta, yellow, red, green, and blue solid print images were created, and 25 ° C water was dropped onto the image. Then, the degree of discoloration of the image after natural drying was visually observed to evaluate the level of water resistance.
  • an ink jet recording sheet of the present invention it is possible to produce an ink jet recording sheet that is excellent in gloss, image quality, ink absorbability !, misalignment, and is prevented from being cracked. Even if the coating amount of the crosslinking agent is increased in order to increase the coating amount of the layer forming coating solution, it is excellent in pre-metering coating properties such as die coating.

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

Abstract

L’invention concerne un procédé pour la fabrication d’une feuille d’impression par jet d’encre, caractérisé en ce qu’il comprend une première étape consistant à enduire un liquide de revêtement pour former une sous-couche, contenant de fines particules, un liant et un agent de réticulation, qui ne réticule pas le liant, sur un support pour former une sous-couche et une seconde étape consistant à enduire un liquide de revêtement pour la formation d’une couche de réception d’encre, contenant de fines particules et une résine hydrosoluble réticulable à l’aide d’un agent de réticulation sur la sous-couche pour former une couche de réception d’encre.
PCT/JP2006/312707 2005-07-01 2006-06-26 Procédé pour la fabrication d’une feuille d’impression par jet d’encre WO2007004454A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2005193534 2005-07-01
JP2005-193534 2005-07-01
JP2005203719 2005-07-12
JP2005-203719 2005-07-12

Publications (1)

Publication Number Publication Date
WO2007004454A1 true WO2007004454A1 (fr) 2007-01-11

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09109544A (ja) * 1995-10-13 1997-04-28 Mitsubishi Paper Mills Ltd インクジェット用記録シート
JPH1058823A (ja) * 1996-08-27 1998-03-03 Oji Paper Co Ltd インクジェット記録用シート
JP2002283697A (ja) * 2001-03-27 2002-10-03 Nippon Paper Industries Co Ltd インクジェット記録媒体
WO2003101745A1 (fr) * 2002-06-04 2003-12-11 Canon Kabushiki Kaisha Support d'enregistrement pour encre et procede de production dudit support

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09109544A (ja) * 1995-10-13 1997-04-28 Mitsubishi Paper Mills Ltd インクジェット用記録シート
JPH1058823A (ja) * 1996-08-27 1998-03-03 Oji Paper Co Ltd インクジェット記録用シート
JP2002283697A (ja) * 2001-03-27 2002-10-03 Nippon Paper Industries Co Ltd インクジェット記録媒体
WO2003101745A1 (fr) * 2002-06-04 2003-12-11 Canon Kabushiki Kaisha Support d'enregistrement pour encre et procede de production dudit support

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