WO2008044795A1 - Feuille d'enregistrement - Google Patents

Feuille d'enregistrement Download PDF

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Publication number
WO2008044795A1
WO2008044795A1 PCT/JP2007/070298 JP2007070298W WO2008044795A1 WO 2008044795 A1 WO2008044795 A1 WO 2008044795A1 JP 2007070298 W JP2007070298 W JP 2007070298W WO 2008044795 A1 WO2008044795 A1 WO 2008044795A1
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WO
WIPO (PCT)
Prior art keywords
parts
coating layer
recording sheet
pigment
mass
Prior art date
Application number
PCT/JP2007/070298
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English (en)
Japanese (ja)
Inventor
Nobuyasu Sasaguri
Nobuhisa Dano
Sakura Miyazaki
Kazuo Totani
Original Assignee
Oji Paper Co., Ltd.
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Filing date
Publication date
Application filed by Oji Paper Co., Ltd. filed Critical Oji Paper Co., Ltd.
Publication of WO2008044795A1 publication Critical patent/WO2008044795A1/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
    • B41M5/52—Macromolecular coatings
    • B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays

Definitions

  • the present invention relates to a recording sheet.
  • a recording sheet for both inkjet recording and electrophotographic recording.
  • liquid or ink is ejected from a nozzle onto a recording sheet using heat or pressure as a drive source, and an image is formed with the ink.
  • An ink jet recording system in which printing is performed and an electrophotographic recording system in which printing is performed by forming an image by transferring toner onto a recording sheet are used.
  • pigments such as light calcium carbonate and heavy calcium carbonate and water
  • a general-purpose daros printing paper that is manufactured by applying a water-based coating solution containing a binder such as a functional resin to paper, drying it, and applying gloss and smoothing treatment such as super calender and daros calendar.
  • a binder such as a functional resin
  • gloss and smoothing treatment such as super calender and daros calendar
  • the pigment used is a material in which the pores formed in the coating layer are difficult to increase when calcium carbonate or the like is used.
  • Super power Render is a smoothing process such as daros calender, and the pores are crushed, so there is a problem that ink absorption is slow and ink is difficult to dry.
  • Dalos printing paper when Dalos printing paper is used in the electrophotographic recording method, paper sticking to a double feed or toner fixing roll is likely to occur, especially under high temperature and high humidity, and image defects due to toner blisters occur. Easy.
  • paper is stuck to a multi-feed or toner fixing roll, smoothness is improved and adhesion between papers is improved by processing such as super calender 1 and dalos calender 1 to give high gloss, and This is due to the increase in density and lowering of paper due to the treatment.
  • toner toner transferred to the coated surface is heated with a toner fixing roll, and when the toner is formed into a film by heat, the air that was present in the toner layer is removed from the toner layer.
  • Absorption coefficient K a according to the Bristow test in accordance with the method 1 is in the range of 14 to 15 ml Zm 2 ⁇ sec 1/2 , and more.
  • a recording sheet used in combination with the electrophotographic recording system and the ink jet recording system is disclosed (for example, Japanese Patent Laid-Open No. Heisei 8-3010 1; Japanese Patent Laid-Open No. Heisei 8-5 0 3 6 6). No. 2; Japanese Patent No. 2 0 0 0 — 8 5 2 3 9; Japanese Patent Application Laid-Open No. 6 2 1 9 0 3 8), and a description of how to obtain high gloss and electrojet suitability It has not been.
  • the density of the coated paper is 1.10 g Zm 3 or less, the water content is 4 to 6%, and there is a void in the coating layer.
  • an organic pigment as a conductive resin is contained in an amount of 5 to 25% by weight of the pigment weight (see, for example, Japanese Patent Application Laid-Open No. Heisei 3-294.00).
  • Japanese Patent Application Laid-Open No. Heisei 3-294.00 Japanese Patent Application Laid-Open No. Heisei 3-294.00.
  • a recording medium comprising a coating layer mainly composed of a pigment and a binder
  • 40% by weight or more of all pigments in the coating layer is composed of satin white and / or calcium sulfate.
  • a recording medium has been proposed (see, for example, Japanese Patent Laid-Open No. 2000-0 2 4 3 6 2 3).
  • the coating layer is picked in the toner fixing roll because the coating strength is weak. Trouble is likely to occur.
  • the inner coating layer adjacent to the sheet-like support having two or more coating layers 1 to 30 parts by mass of satin white is contained with respect to 100 parts by mass of the total pigment
  • the outermost coating layer formed on the inner coating layer contains 2 to 20 parts by mass of hollow plastic pigment and / or satin white with respect to 100 parts by mass of the total pigment, and kaolin.
  • Inkjet recording and electrophotographic recording / recording sheets characterized by containing 50 to 90 parts by mass have been proposed (see, for example, JP 2 0 0 5 — 2 5 4 7 5 8)
  • kaolin is contained in an amount of 50 to 90 parts by mass, sufficient ink absorbability may not be obtained in ink jet suitability. Disclosure of the invention
  • the present invention provides a recording sheet for both ink jet recording and electrophotographic recording, which is excellent in ink absorbability in the ink jet recording method, does not generate a toner press in the electrophotographic recording method, and has high gloss. Provide.
  • a specific pigment can be used to provide a coating layer mainly composed of a pigment and a binder. It has come.
  • a recording sheet having a coating layer mainly composed of a pigment and a binder on at least one side of the support the pigment has a satin white and an aspect ratio of 15 to 60
  • the present invention also includes the following aspects.
  • the coating layer contains 1 to 50 parts by mass of satin white and 3 to 60 parts by mass of engineered kaolin with respect to 100 parts by mass of the total pigment. Recording sheet. ,
  • the coating layer further contains 0.1 to 3 parts by mass of a cationic compound having a cationization degree of 0.1 to 4 meq / g. (1) to (3) The recording sheet described.
  • the coating layer is the outermost coating layer, and its surface has a 75 ° specular glossiness of 40% or more as defined in JISP 8 14 2 (1) to (4) The recording sheet according to any one of the above.
  • a second coating layer containing an ultrafine aggregate pigment selected from a silica force having an average particle size of 0.08 to 0.7 m, alumina, and alumina hydrate is formed on the coating layer.
  • the recording sheet according to any one of (1) to (4) provided.
  • the coating layer is the outermost coating layer, and the surface has a 75-degree specular gloss of 40% or more as defined in JIS 8 '1 4 2.
  • the water absorption rate of the support is 20 to 300 g / m 2 when the contact time with water specified in JISP 8 1 4 0 is 20 seconds.
  • a recording sheet for both ink jet recording and electrophotography which is excellent in ink absorption in the ink jet recording method, does not generate toner blisters in the electrophotographic recording method, and has high luminous properties.
  • Can do. BEST MODE FOR CARRYING OUT THE INVENTION
  • the support according to the present invention is not particularly limited, and examples thereof include a sheet-like paper substrate, a film, and a joined product of the film and the sheet-like paper substrate.
  • a sheet having water absorption is preferable, and in particular, the cup method water absorption is 20 to 300 g / m 2 when the contact time with water specified in JISP 8 140 is 20 seconds.
  • the support is preferably 10 to 2500 g / m 2 . 7 g Z m of less than 2, in the Inkjet recording suitability, and reduced ink absorption, 3 0 0 g If Zm exceeds 2, absorption increases in the coating solution to the support, the desired gloss obtained It becomes difficult to be.
  • pulp constituting the sheet-like paper substrate there is no particular limitation on the manufacturing method and type of pulp constituting the sheet-like paper substrate.
  • chemical pulp such as KP
  • mechanical pulp such as SGP, RGP, BCTMP and CTMP
  • waste paper pulp such as deinked pulp
  • kenaf Non-wood pulp such as bamboo, straw, hemp, etc.
  • Organic synthetic fibers such as reamide fiber and polyester fiber, recycled fibers such as polyester fiber, inorganic fibers such as glass fiber, ceramic fiber, and carbon fiber can also be used.
  • use of chlorine-free pulp such as ECF pulp and TCF pulp is preferred.
  • a filler may be blended as necessary.
  • various pigments generally used for fine paper can be used.
  • various anion properties, non-ion properties, and cations that have been used in the past can be used in the paper material, as long as the desired effect of the present invention is not impaired.
  • Various additive agents for papermaking such as neutrality or amphoteric yield improver, freeness improver, paper strength enhancer, and internally added sizing agent, can be appropriately selected and used as necessary.
  • internal additives for papermaking such as dyes, fluorescent brighteners, pH adjusting agents, antifoaming agents, pitch control agents and slime control agents can be added as needed.
  • the paper-making method of the sheet-like paper substrate is not particularly limited.
  • the paper-making method includes an acidic paper-making method in which the paper pH is around 4.5, a paper-making method that includes an alkaline filler such as calcium carbonate as a main component, and ⁇ H All papermaking methods can be applied, such as neutral papermaking, which is performed from weak acidity of 6 to weakly alkaline paper with a pH of about 9, and the paper machine is also a long net paper machine, twin wire paper machine Machine, circular paper machine and Yankee paper machine can be used as appropriate.
  • pigments include kaolin, clay, calcined clay, zinc oxide, aluminum oxide, aluminum hydroxide, calcium carbonate, silica, silica composite calcium carbonate with silica supported on calcium carbonate, aluminum silicate, alumina, satin white , Colloidal silica, zeolite, synthetic zeolite, sepiolite, smectite, synthetic smectite, magnesium silicate, magnesium carbonate, magnesium oxide, diatomaceous earth, hydrated talcite, styrene, ethylene, bugen, Styrene plastic pigment ⁇ , styrene plastic pigment ⁇ , styrene-acrylic plastic pigment, acrylic plastic pigment, urethane plastic pigment, urea resin Organic pigments such as plastic pigments, plastic pigments such as benzoguanamine-based plastic pigments, vinyl chloride, polyurethane, acryl, vinyl acetate, polycarbonate, nylon, and copolymers thereof, etc.
  • binders used for conventional coated paper One can be used.
  • the basis weight of the support used in the present invention is not particularly limited, but those having a range of 30 g to 300 g / m 2 are usually used.
  • Examples of the film that is a support used in the present invention include acetate film, cellulose triacetate film, nylon film, polyester film, polycarbonate film, polystyrene film, polyethylene sulfide film, polypropylene film, and polyimide. Film, cellophane (registered trademark), and the like.
  • those containing additives such as inorganic pigments, organic pigments, ultraviolet absorbers, light stabilizers, antioxidants, fluorescent dyes, crosslinking agents, lubricants, release agents, etc., are used as necessary.
  • the method for producing the film is not particularly limited, and a known method is used. Can be.
  • the filaments used as the support according to the present invention include those generally called synthetic paper.
  • the thickness of the film is not particularly limited, but a film having a thickness of 40 to 30 / m is usually used.
  • a laminate of the film and the sheet-like paper substrate can be obtained by a known method.
  • the thickness of the joined product of the film and the sheet-like paper substrate used as the support is not particularly limited, but usually a thickness in the range of 40 to 300 m is used.
  • various known coating layers may be provided on the back side to prevent electrification, curl prevention, improved adhesion, impart printability, improve paper feed and discharge suitability on the printer, etc. I can do it. It is of course possible to add application suitability to the back surface by applying various processing such as adhesion, magnetism, flame resistance, heat resistance, water resistance, oil resistance, anti-slip, etc.
  • the coating layer contains a pigment and a binder.
  • the surface preferably has a 75 ° specular glossiness of 40% or more as defined in JISP 8 1 4 2, 4 5% or more is more preferable. If the glossiness of the surface is less than 40%, the glossiness is poor, and there is a possibility that the recorded material lacks a high-class feeling.
  • Satin white is a fine needle-like crystal formed by the reaction between calcium hydroxide and aluminum sulfate.
  • the compound name is calcium sulfoaluminate and contains crystal water.
  • Satin white has a fine needle-like shape, and it is easy to obtain a bulky and high-gloss coating layer, and a coating layer with low air permeability and high pore volume can be obtained. Therefore, it is preferably used since the performance of the recording sheet is easily obtained.
  • the content of Zade 'Wai is preferably 1 to 50 parts by mass, more preferably 2 to 45 parts by mass with respect to 100 parts by mass of the total pigment.
  • Engineered kaolin is a mechanically or chemically improved particle size distribution compared to general kaolin.
  • Engineered kaolin preferably has an aspect ratio of 15 to 60 and an average particle diameter of 0.2 to 0.8 m, more preferably an aspect ratio of 17 to 50, average.
  • the particle diameter is 0.3 to 0.7 m.
  • the aspect ratio was selected arbitrarily from a secondary electron image taken with Hitachi Scanning Electron Microscope S — 3 60 ON, manufactured by Hitachi High-Technologies Corp. The diameter and thickness of particles at 0 points or more were measured, and the aspect ratio was calculated by the following formula.
  • the content of engineered kaolin is preferably 3 to 60 parts by mass, more preferably 5 to 50 parts by mass with respect to 100 parts by mass of all pigments.
  • Styrene plastic pigment styrene-butadiene plastic pigment, styrene-acrylic plastic pigment, acrylic plastic pigment, urethane plastic pigment, urea resin pigment Plastic
  • plastic pigments such as plastic pigments and benzoguanamine-based plastic pigments are known, but hollow plastic pigments having voids in the core are particularly preferred because of their high glossiness. It is preferable to contain 1 to 69 parts by mass with respect to 100 parts by mass of the total pigment, and more preferably 3 to 60 parts by mass.
  • pigments may be blended as necessary.
  • the pigment used in this case include calcined clay, zinc oxide, aluminum oxide, aluminum hydroxide, calcium carbonate. , Silica, silica composite carbonated silica supported by calcium carbonate, aluminum silicate, alumina, colloidal silica, zeolite, synthetic zeolite, sepiolite, smectite, synthetic smectite, magnesium silicate, Magnesium carbonate, magnesium oxide, diatomaceous earth, hydrated talcite, styrene, ethylene, bugen, vinyl chloride, polyurethane, acrylic, vinyl acetate, poly uniponate, nylon, and their copolymers Molecular particles, etc., each known in the general coated paper manufacturing field Pigments and the like, one or two or more kinds are used in properly selected from these
  • binders used for conventional coated paper can be used.
  • Synthetic rubber latexes such as relate monobutadiene, synthetic rubber late
  • the blending amount of the binder is not particularly limited, but is preferably 5 to 60 parts by mass, more preferably 7 to 50 parts by mass with respect to 100 parts by mass of the total pigment. If the blending amount is less than 5 parts by mass, the coating film strength tends to decrease, and if it exceeds 60 parts by mass, the ink absorbability tends to decrease, and the toner blister due to the high air permeability increases. It tends to occur easily.
  • auxiliary agents such as surfactants, pH modifiers, viscosity modifiers, softeners, gloss-imparting agents, waxes, dispersants, flow modifiers, stabilizers, antistatic agents, A crosslinking agent, a sizing agent, a fluorescent brightening agent, a coloring agent, an ultraviolet absorber, an antifoaming agent, a water-proofing agent, a plasticizer, a lubricant, an antiseptic and a fragrance are appropriately blended as necessary.
  • a cationic or anionic substance can be contained in the coating layer according to the ionicity of the ink.
  • the cationic substance include a polyalkylene polyamine resin or a derivative thereof, an acrylic resin having a tertiary amino group or a quaternary ammonium group, a polyethyleneimine resin, a polyamide resin, or a polyamide chlorohydrin. system And cationic resins such as resins, polyamine chlorohydrin resins, polyamido! ⁇ Polyamine chlorohydrin resins, polydiarylamine resins, polyamine resins, and dicyandiamide condensates.
  • anionic substances include water-insoluble metal salts such as lintungstic acid and linmolide acid, ammonium salts of styrene monomaleic anhydride copolymer, and olefinic maleic anhydride copolymer.
  • anionic polymers such as ammonium salts, anion-modified PVA, and carboxymethylcellulose.
  • a cationic compound having a degree of cationization of 0.1 to 4 meq / g, more preferably 1 to 3.5 meq of g it is preferable to contain a cationic compound having a degree of cationization of 0.1 to 4 meq / g, more preferably 1 to 3.5 meq of g. If the degree of cationization is too low, it is difficult to obtain a sufficient effect of improving the ink absorption. If the degree of cationization is too high, agglomerates are formed in the paint, making it difficult to prepare the paint.
  • These cationic compounds are preferably blended in an amount of 0.1 to 3 parts by weight, more preferably 0.5 to 2 parts by weight with respect to 100 parts by weight of the pigment contained in the coating layer. If the blending amount is too small, it is difficult to obtain the effect of improving the ink absorption. If the blending amount is too large, agglomerates are likely to be formed in the paint, and the coating viscosity becomes high and the coating property
  • the present invention includes a second coating layer containing an ultrafine aggregate pigment selected from silica, alumina, and alumina hydrate having an average particle size of 0.08 to 0.7 m on the coating layer. It is preferable.
  • the surface should have a 75 ° specular glossiness of 40% or more as defined in JISP 8 14 2 Preferably, it is more preferably 45% or more. If the surface brightness is less than 40%, the glossiness is poor, and there is a possibility that the recorded material lacks a high-class feeling.
  • the purpose of the second coating layer is to quickly fix the dyes and pigments in the ink and obtain a high color (high print density) and uniform image (dot roundness).
  • an ultrafine aggregate pigment selected from silica, alumina, and alumina hydrate having an average particle size of 0.08 to 0.7 ⁇ m it is possible to obtain a highly colored and uniform image.
  • the printed portion has good rubbing properties, and the difference in gloss on the printed portion when printing with white paper gloss and pigment ink can be minimized.
  • Examples of the ultrafine aggregate pigment selected from silica, alumina, and alumina hydrate having an average particle size of 0.08 to 0.7 m used in the second coating layer include, for example, dry silica, mesoporous silica, and colloid.
  • a small amount of at least one kind of field solution selected from active silicic acid aqueous solution and alkoxysilane is added to the seed solution little by little.
  • At least one kind is selected from secondary silli force dispersions obtained by growing sili force fine particles, alumina, and alumina hydrate.
  • vapor-phase method silica and alumina are preferable from the viewpoint of the film formability of the coating layer and the image density after printing.
  • the vapor phase silica used in the present invention is also called fumed silica, and is generally made by flame hydrolysis. Specifically, a method of burning silicon tetrachloride together with hydrogen and oxygen is generally known, but silanes such as methyltrichlorosilane and trichlorosilane can be used alone or in place of silicon tetrachloride. It can be used in a state mixed with silicon chloride.
  • the mesoporous silica used in the present invention is a porous silica material having an average pore diameter of 1.5 to 1 OO nm.
  • aluminum, titanium, vanadium, boron, manganese atoms, etc. introduced mesoporous Silica can also be used.
  • the physical properties of the porous body are not particularly limited,
  • the BET specific surface area (nitrogen adsorption specific surface area) is preferably 40 to 15500 m 2 g force, and the pore volume is preferably 0.5 to 4 cc g.
  • the method for synthesizing mesoporous silica is not particularly limited, but is described in U.S. Pat. No. 3 5 5 6 7 25, a quaternary ammonium salt containing a long-chain alkyl using silica alkoxide as a silica source. A long chain alkyl group using amorphous silica powder or an aqueous aluminum silicate solution described in JP-A-5_50 3 4 99, etc. as a silica source.
  • a quaternary ammonium salt or a hydrothermal synthesis method using a phosphonium salt as a template, or a layered silicate such as kanemite as a silica source described in JP-A-4-2 8 8 10 A method of synthesizing a long-chain alkylammonium cation, etc., using an ion exchange method as a template, and a deamin such as dodecylamine, hexadecylamine, a nonionic surfactant, etc.
  • a template there is a method of synthesizing using activated silica obtained by ion exchange of water glass or the like as a silica source. Examples of the method for removing the template from the nanoporous silica precursor include a method of baking at a high temperature and a method of extracting with an organic solvent.
  • a small amount of at least one feed liquid selected from an aqueous solution of active silicic acid and alkoxysilane is added to the seed liquid. It is possible to obtain a secondary silica dispersion obtained by growing silica fine particles by adding one of them by a method described in Japanese Patent Application Laid-Open No. 2 0 1-3 5 4 4 0 8.
  • the alumina used in the present invention is also generally called crystalline alumina oxide.
  • ⁇ , ⁇ , R, ⁇ , ⁇ , ⁇ , pseudo-a, and alumina oxide having crystals are mentioned.
  • the present invention is glossy, ink
  • vapor-phase-process alumina oxide, a, ⁇ 5, ⁇ having crystal ') are preferably selected.
  • Vapor phase alumina oxide (fumed alumina) which has a sharp particle size distribution and excellent film formability, is the most preferred.
  • Vapor phase alumina is alumina formed by high-temperature hydrolysis of gaseous aluminum trichloride, resulting in the formation of high purity alumina particles.
  • vapor phase alumina oxide has a cationic surface charge.
  • US Pat. No. 5, 171, 626 The use of vapor phase alumina in ink jet coating is shown, for example, in US Pat. No. 5, 171, 626.
  • the alumina hydrate used in the present invention is not particularly limited, but is preferably selected from the viewpoint of ink absorbability and film formability, and bermite or pseudo-beige.
  • the method for producing alumina hydrate is, for example, a method in which aluminum isopropoxide is hydrolyzed with water ( ⁇ . ⁇ . ⁇ ⁇ 1 das, amer. Cer am. Soc. B ul., 5 4, 2 8 9 (1 9 7 5)) and a method of hydrolyzing aluminum alkoxide (Japanese Patent Laid-Open No. 06-064 9 1 8).
  • the ultrafine aggregate pigment selected from silica, alumina, and alumina hydrate having an average particle size of 0.08 to 0.7 m has an average primary particle size of 0.03 to 0.04 m.
  • the primary particles are preferably aggregated.
  • the average primary particle size is from 0.0 to 5 to 0.0 2 for the dye and pigment in the ink to be easily fixed to the second coating layer and to obtain the ink absorption speed, image density and gloss.
  • a pigment having an average particle diameter of 0.01 to 0.5 m formed by aggregation of primary particles of 0 ⁇ m is more preferable. More preferred is a pigment having an average primary particle diameter of 0.02 to 0.2 m, which is obtained by agglomerating primary particles having an average primary particle diameter of 0.07 to 0.013.
  • bre For example, strong force by mechanical means, so-called bre It can be obtained by the akingdown method (a method of subdividing the bulk material).
  • mechanical means ultrasonic homogenizer, pressure homogenizer, liquid collision homogenizer, high-speed rotary mill, roller mill, container drive medium mill, medium agitator mill, jet mill, mortar, crusher (in bowl-shaped container) And a mechanical method such as a sand grinder. Classification and repeated pulverization are necessary to reduce the particle size.
  • a cationic or anionic substance can be contained in the coating layer according to the ion properties of the ink.
  • silica is anionic
  • the addition of a cationic substance is desired.
  • the addition method is not particularly limited.
  • a cationic compound is added to silica, alumina, or alumina hydrate having an average particle diameter of 0.08 to 0.7 I to agglomerate or increase. If there is no viscosity at all, there is no problem if it is lightly dispersed so as to be uniform.
  • binder contained in the second coating layer examples include conventionally known binders.
  • binders polyvinyl alcohol, polyvinyl chloride, casein, soy protein, synthetic proteins, starch, carboxymethylcellulose, cellulose derivatives such as methylcellulose, high molecular latex (emulsion type, solvent type, solventless type), synthesis Examples thereof include water-dispersible adhesives such as resin emulsion, and temperature-sensitive polymers. In terms of ink absorption and gloss, urethane resin and acrylic resin 0298 is preferred. Two or more types of binders may be used in combination in order to improve adhesion to pigments.
  • the method for forming the coating layer is not particularly limited, and a commonly used coating apparatus is used.
  • blade coaters For example, blade coaters, air knife coats, spray coats, evenings, rod blades, evenings, mouths, heads, heads, heads, heads, heads.
  • Dieslotco overnight gravure coater, Champrexco overnight, brushco overnight, roll roll counter, metering blade type size pressco overnight, Billblade night
  • the coated surface may be single-sided or double-sided, and the coating amount in the first coating layer is preferably in the range of 1 to 20 g / m 2 , more preferably in the range of 2 to 15 g Zm 2 .
  • a range of 0.3 to 5.0 g / m 2 is preferable, and a range of 0.5 to 3. O g / m 2 is more preferable.
  • the smoothing processing equipment includes normal super calenders, gloss calenders, soft calenders, and shrines.
  • a pp calendar or the like is used. At that time, it is processed by appropriately adjusting the processing conditions such as the form of the pressurizing device, the number of pressurizing cups, heating, etc.
  • the calendar It is desirable to set the temperature of the neck as high as possible and the pressure as low as possible in the condition of passing between the two rolls of one rigid roll and elastic roll.
  • the recording sheet according to the present invention is for inkjet recording or electrophotographic recording. Not only for recording but also for fusion thermal transfer recording, sublimation thermal transfer recording; 'or' can be applied for letterpress printing, gravure printing, flexographic printing, offset printing, and can also be used as a label top It is.
  • the water absorption of the cup method is based on the sheet paper base considering that the contact time with water specified in JISP 8 1 4 0 is 20 seconds and water passes through the sheet paper substrate.
  • a filter paper was placed under the material, and the amount of water passing through the filter paper was also taken as the water absorption.
  • the dry coating weight per side is 7.0 g / 2
  • the paper was coated, dried, and subjected to a super calender treatment with a nip pressure of 40 kg / cm of linear pressure to produce a recording sheet having a basis weight of 1 14 g / m 2 .
  • Example 1 engineered kaolin (trade name: ASTRAPLUS, aspect ratio 24, average particle size 0.49 wm, manufactured by Imerys Minerals Japan) 5 5 parts, satin white ( Product name SW— BL, manufactured by Shiraishi Calcium Industry Co., Ltd. 4 5 parts, instead of engineer kaolin (product name: Was Laplace, aspect ratio 24, average particle size 0.49 im, IMERIS Minerals Japan Co., Ltd.) 3 0 parts, Sachin White (trade name SW—BL, Shiraishi Calcium Co., Ltd.) 3 5 parts, Hollow plastic pigment (AE— 8 5 1, J (Manufactured by SR Co., Ltd.) 3 A recording sheet was produced in the same manner as in Example 1 except that 5 parts were used.
  • Example 1 the support is an alkyl ketene dimer (trade name: SPK-910, manufactured by Arakawa Chemical Industries, Ltd.) of 0.15 part, and has a Cobb method water absorption of 10 gZm 2 for 20 seconds.
  • a recording sheet was prepared in the same manner as in Example 1 except that the recording sheet was used.
  • Example 1 support of alkyl ketene dimer (trade name: SPK-910, manufactured by Arakawa Chemical Industries, Ltd.) 0.1 8 parts, support with Cobb method water absorption of 5 gZm 2 for 20 seconds
  • a recording sheet was prepared in the same manner as in Example 1 except that the recording sheet was used. .
  • Example 1 an engineered kaolin (trade name: ASTRAPLUS, aspect ratio 24, average particle size 0.
  • Heavy calcium carbonate (trade name: F MT—90, manufactured by Pfematec Co., Ltd.) 50 parts, Kaolin (product name: Fastrassin, aspect ratio) 1 1, Average particle size 0.29 / xm, made by Imeris Minerals Japan, Inc.
  • a pigment slurry was prepared by dispersing in water using a machine. To 100 parts of this pigment slurry, 40 parts of starch (trade name: Ace 8, manufactured by Oji Cornstarch Co., Ltd.) is added as a binder, and 0.2 part of antifoaming agent SN 7 7 7 is added. Water was added to make 35% paint. This paint was applied to both sides of the support using a gate roll co-operator so that the dry coating weight per side was 3.0 g / m 2 and dried to produce an under layer.
  • starch trade name: Ace 8, manufactured by Oji Cornstarch Co., Ltd.
  • Example 1 Apply the coating material of Example 1 on the under layer, using a blade coater on both sides, apply so that the dry coating weight per side is 6. O g Zm 2 , dry, and the basis weight is 1 1 8 g A recording sheet was prepared in the same manner as in Example 1 except that a recording sheet of / m 2 was obtained.
  • Example 10 in the production of the under layer, heavy carbonate carbonate (trade name: FMT—90, manufactured by Phimatech) was replaced with satin white (trade name: SW-BL, manufactured by Shiraishi Calcium Industry Co., Ltd.).
  • Equal volume substitution kaolin (trade name: ASTRASINE, aspect ratio 11 1, average particle size 0.29 mm, made by IMERIS MINERALS JAPAN) england second kaolin (trade name: Astra Plus, Aspect)
  • Example 1 2 A recording sheet was prepared in the same manner as in Example 10 except that it was replaced with an equivalent amount of 2 to 4 and an average particle size of 0.49 mm (made by Imeris Minerals Japan).
  • Example 1 In the coating preparation of Example 1, a cationic resin (trade name: HP—75 2 2 A, cationization degree: 3.3 meq / g, Senriki Co., Ltd.) 1 part A recording sheet was prepared in the same manner as in Example 1 except that was further added.
  • a cationic resin trade name: HP—75 2 2 A, cationization degree: 3.3 meq / g, Senriki Co., Ltd.
  • a cationic compound having a 5-membered ring amidine structure (trade name: SC-700, molecular weight: 300,000) having a 5-membered ring amidine structure was added to the 10% aqueous dispersion, and dispersed with a sand grinder. Thereafter, the mixture was further dispersed with a pressure homogenizer, and the dispersing operation of the sand grinder and the pressure homogenizer was repeated until the average particle size became 0.15 m to prepare a 10% aqueous dispersion.
  • Example 2 Using the above-mentioned coating material B on both sides of the recording medium obtained in Example 1 with a barometer overnight, the coating weight so that the dry coating weight per side becomes 1. O g / m 2.
  • the paper was dried and subjected to a super-rendering process with a nip pressure of 40 kg Z cm, and a recording sheet having a basis weight of 1 16 gZm 2 was produced.
  • Example 1 the average particle size of paint B 1.
  • O ⁇ m gas phase method silica was used for alumina with a particle size of about 0.2 m (C AB OT, product name: P
  • a recording sheet was produced in the same manner as in Example 13 except that G-0 0 3) was used.
  • Example 1 gas phase method silica with an average particle size of paint B of 1.0 ⁇ m was converted to alumina hydrate (product name: AS-3) manufactured by Catalyst Kasei Co., Ltd. with a particle size of about 0.5 m.
  • a recording sheet was produced in the same manner as in Example 13 except for the change.
  • Example 1 engineered kaolin (trade name: ASTRA PLUS, aspect ratio 24, average particle size 0.49 mm, manufactured by Imeris Minerals Japan Co., Ltd.) X treme, aspect ratio 3 3, average particle size 0.89 9 m, manufactured by Imeris Minerals Japan Co., Ltd., and replaced with an equal amount of styrene-butagen latex (trade name: T 1 2 5 4 0 A A recording sheet was prepared in the same manner as in Example 1 except that JSR Corporation) was changed to 25 parts.
  • Example 1 engineered kaolin (trade name: ASTRA PLUS, aspect ratio 24, average particle size 0.49 m, manufactured by Imeris Minerals Japan Co., Ltd.)
  • the styrene-butadiene latex (trade name: T 1 2 5 40 0 A) was replaced with an equivalent amount of 1 to 1 and an average particle size of 0.29 m, made by Imeris Minerals Japan.
  • a recording sheet was prepared in the same manner as in Example 1 except that 40 parts by JSR Corporation) was used.
  • Example 1 engineered kaolin (trade name: ASTRA PLUS, aspect ratio 24, average particle size 0.49 m, IMERISMI Equal amount of kaolin (trade name: Force Pim D, aspect ratio 13, average particle size 1.15 m, manufactured by Imaris Minerals Japan)
  • ASTRA PLUS aspect ratio 24, average particle size 0.49 m
  • IMERISMI Equal amount of kaolin
  • a recording sheet was prepared in the same manner as in Example 1 except for the above.
  • the obtained recording sheet was evaluated by the following method. Table 1 shows the results obtained.
  • the 75-degree specular gloss of the white paper portion was measured according to JISP 8 1 4 2.
  • Sample image “column” with color laser printer (Rico Co., Ltd. color copier IPS i ⁇ Color 2 1 0 0) (High-definition color digital standard image display, N6, Japan Standards Association) Were printed on both sides and evaluated as follows.
  • the recording sheet of the present invention does not cause ink absorption in the ink jet recording system or toner press in the electrophotographic recording system.
  • the present invention is an ink jet recording and electrophotographic recording sheet that is excellent in ink absorption in the inkjet recording system, has no toner blister in the electrophotographic recording system, and has high gloss. It is extremely useful in practice.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Ink Jet (AREA)

Abstract

La présente invention concerne une feuille d'enregistrement comprenant un substrat et une couche superficielle principalement composée d'un pigment et d'un liant et formée sur au moins une surface du substrat, le pigment comprenant le blanc satin et un kaolin modifié présentant un rapport d'aspect de 15 à 60 et un diamètre moyen des particules de 0,2 à 0,8 μm.
PCT/JP2007/070298 2006-10-11 2007-10-11 Feuille d'enregistrement WO2008044795A1 (fr)

Applications Claiming Priority (4)

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JP2006-277092 2006-10-11
JP2006277092 2006-10-11
JP2006-342111 2006-12-20
JP2006342111 2006-12-20

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WO2008044795A1 true WO2008044795A1 (fr) 2008-04-17

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Publication number Priority date Publication date Assignee Title
JP2010184391A (ja) * 2009-02-10 2010-08-26 Oji Paper Co Ltd インクジェット記録体およびインクジェット記録体の製造方法
JP5883262B2 (ja) * 2011-09-20 2016-03-09 北越紀州製紙株式会社 湿式電子写真印刷用紙
JP6212457B2 (ja) * 2014-09-24 2017-10-11 北越紀州製紙株式会社 インクジェット印刷用紙
JP6212458B2 (ja) * 2014-09-24 2017-10-11 北越紀州製紙株式会社 インクジェット印刷用紙
JP6579864B2 (ja) * 2015-08-28 2019-09-25 北越コーポレーション株式会社 インクジェット用記録紙

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002052810A (ja) * 2000-08-07 2002-02-19 Fuji Photo Film Co Ltd インクジェット記録用シート
JP2004167784A (ja) * 2002-11-19 2004-06-17 Fuji Photo Film Co Ltd インクジェット記録用シート
JP2004243623A (ja) * 2003-02-13 2004-09-02 Seiko Epson Corp インクジェット記録媒体
JP2006192735A (ja) * 2005-01-14 2006-07-27 Daio Paper Corp 顔料インク用インクジェット記録用紙
JP2006240017A (ja) * 2005-03-02 2006-09-14 Mitsubishi Paper Mills Ltd インクジェット記録材料

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002052810A (ja) * 2000-08-07 2002-02-19 Fuji Photo Film Co Ltd インクジェット記録用シート
JP2004167784A (ja) * 2002-11-19 2004-06-17 Fuji Photo Film Co Ltd インクジェット記録用シート
JP2004243623A (ja) * 2003-02-13 2004-09-02 Seiko Epson Corp インクジェット記録媒体
JP2006192735A (ja) * 2005-01-14 2006-07-27 Daio Paper Corp 顔料インク用インクジェット記録用紙
JP2006240017A (ja) * 2005-03-02 2006-09-14 Mitsubishi Paper Mills Ltd インクジェット記録材料

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