JPH0365375A - Recording sheet - Google Patents
Recording sheetInfo
- Publication number
- JPH0365375A JPH0365375A JP1201402A JP20140289A JPH0365375A JP H0365375 A JPH0365375 A JP H0365375A JP 1201402 A JP1201402 A JP 1201402A JP 20140289 A JP20140289 A JP 20140289A JP H0365375 A JPH0365375 A JP H0365375A
- Authority
- JP
- Japan
- Prior art keywords
- recording sheet
- solvent
- less
- supporting layer
- alumina
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000002904 solvent Substances 0.000 claims abstract description 19
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 claims abstract description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 15
- 239000011148 porous material Substances 0.000 claims description 13
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- GZVHEAJQGPRDLQ-UHFFFAOYSA-N 6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 GZVHEAJQGPRDLQ-UHFFFAOYSA-N 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 claims description 3
- 239000000049 pigment Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims 1
- 238000004040 coloring Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000001914 filtration Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 230000000704 physical effect Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- -1 hydroxycellulose Polymers 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 101100049042 Arabidopsis thaliana PVA11 gene Proteins 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- MSYLJRIXVZCQHW-UHFFFAOYSA-N formaldehyde;6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound O=C.NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 MSYLJRIXVZCQHW-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Ink Jet (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は記録用シート、特にインク中の色素だけを記録
体として担持し得ることにより、鮮明な画像ヒ高い発色
性を有する記録用シート、更に詳しくはインク中の色素
と溶媒とを夫々別の層に担持せしめ、その後溶媒担持層
を容易に除去し得る記録用シー１−に係るものである。Detailed Description of the Invention [Industrial Field of Application] The present invention relates to a recording sheet, particularly a recording sheet that can support only the pigment in the ink as a recording medium, thereby producing a clear image and having high color development. More specifically, the present invention relates to a recording sheet 1 in which the dye and solvent in the ink are supported in separate layers, and the solvent supporting layer can then be easily removed.
［従来の技術］
近年、各種学会、会議等のブｌ／ゼンテーション用ヒし
て従来のスライドプロジェクタ−に代り、オーバーヘッ
ドプロジェクタ−が用いられる機会が多くなっている。[Prior Art] In recent years, overhead projectors have been increasingly used instead of conventional slide projectors for presentation purposes at various academic conferences and conferences.
又印刷の分野でも各種の出版物や包装等の用途で透明な
印刷物が求められる様になってきた。Also, in the field of printing, transparent printed matter is now required for various publications, packaging, and other uses.
これら透明シートの印字、印刷は暴利であるシートそれ
自体に吸収性がない為、一般の紙面上に行なう印刷に比
べ、印刷の速度や乾燥の面で特別な配慮が必要である。Since the sheets themselves are not absorbent, printing on these transparent sheets requires special consideration in terms of printing speed and drying compared to printing on ordinary paper.
又、オーバーヘッドプロジェクタ−（ＯＨＰ）用シート
等の極く少量の印刷物を得る為に、パーソナルコンピコ
、−夕やワードプロセッサを用いて原稿を編集し、プリ
ンターにより印字するここが広く行なわれており、その
プリンターとしてフルカラー化が容易なことから、イン
クジェット方式が注目されている。In addition, in order to obtain very small amounts of printed matter such as sheets for overhead projectors (OHP), it is widely practiced to edit the manuscript using a personal computer, computer or word processor, and then print it out with a printer. Inkjet printers are attracting attention because they can easily print in full color.
インクジェット方式では、ノズルのつまり等を防止する
為に、用いられるインクは多量の溶媒（無着色）が含ま
れ、高い色濃度を得る為に多量のインクが用いられる。In the inkjet method, the ink used contains a large amount of solvent (uncolored) to prevent nozzle clogging, etc., and a large amount of ink is used to obtain high color density.
この為、被記録材には高吸収性が要求され、多くは基材
上に微粉シリカを塗布した物が用いられている。For this reason, the recording material is required to have high absorbency, and in many cases, a base material coated with finely powdered silica is used.
［発明の解決しようとする課題］
しかしながら、これらは何れもインクの吸収性を得る為
に大きな細孔容積を有したものを用いる必要があり、透
明基材上に塗布した場合でも塗布層が不透明となる為、
ＯＨＰ用等には全く用いることが出来なかった。[Problems to be solved by the invention] However, in all of these, it is necessary to use a material with a large pore volume in order to obtain ink absorbency, and even when coated on a transparent substrate, the coated layer is opaque. So,
It could not be used for OHP purposes at all.
そこで従来は、ＯＨＰシート用として透明基材上に吸収
性の高分子を塗布したもの（例えば特開昭６Ｏ−９２８
４９）が用いられていたが、高分子層が無孔質である為
、インクの吸収性が十分でなく、にじみが出たり、印字
後乾燥に時間がかかると云う問題があった。これを解決
する為に、熱可塑性の多孔質層を設け、その細孔にイン
クを吸収七′しめ、その後加熱して非多孔質化する方法
（特開昭６２−１９６１７５）等が提案されているが、
その効果や後処理の手間の面から実用性に乏しい等の欠
点を有していた。Conventionally, OHP sheets were coated with absorbent polymers on transparent substrates (for example, JP-A-6O-928).
49) was used, but since the polymer layer was non-porous, the ink absorption was insufficient, causing problems such as bleeding and a long drying time after printing. In order to solve this problem, a method has been proposed in which a thermoplastic porous layer is provided, ink is absorbed into the pores of the layer, and the ink is then heated to make it non-porous (Japanese Patent Laid-Open No. 196175/1983). There are, but
It has drawbacks such as lack of practicality in terms of its effectiveness and the hassle of post-processing.
［課題を解決する為の手段］
本発明者は、かかる従来法が有する諸欠点を排除し、容
易に高い発色と鮮明な画像を得、しかも印刷後のインク
が速やかに乾くような記録用シートを得ることを目的と
して種々研究、検討した結果、インク中の色素のみを記
録シートに担持せしめ、溶媒は言わば濾別してしまい、
しかもこれを記録シートから取り除き得るように構成せ
しめることにより、前記目的を達成し得るこヒを見出し
た。[Means for Solving the Problems] The present inventor has devised a recording sheet that eliminates the drawbacks of such conventional methods, easily obtains high color development and clear images, and allows the ink to dry quickly after printing. As a result of various studies and examinations aimed at achieving this, it was decided that only the pigment in the ink would be supported on the recording sheet, and the solvent would be filtered out, so to speak.
Furthermore, we have found that the above object can be achieved by configuring the recording sheet so that it can be removed from the recording sheet.
か（して本発明は、基材上に色素の担持層を設け、更に
該層上にインク中の溶媒は担持するが色素は透過し、且
剥離可能な有機質シート状の溶媒担持層を有する記録用
シートを提供するにある。(Thus, the present invention provides a dye-supporting layer on a base material, and further has an organic sheet-like solvent-supporting layer that supports the solvent in the ink but allows the dye to pass therethrough and is removable. Provide a recording sheet.
本発明において用いられる色素の担持層を構成する材料
ヒしては、吸着能が２０〜１００ｍｇ／ｇを有するアル
ミナ又はアルミナ永和物が好適である。As the material constituting the dye-supporting layer used in the present invention, alumina or alumina permanent material having an adsorption capacity of 20 to 100 mg/g is suitable.
尚、本発明に用いられる吸着能とは次の様に定義される
。Note that the adsorption capacity used in the present invention is defined as follows.
常温下１００ｃｃの水中に平均粒子径１５μの粉体１ｇ
を投入し、撹拌下にＦｏｏｄ Ｂ１ａｃｋ２を２重量％
含む水溶液を１ ｃｃ／分の割合で滴下していき、液が
着色し始める点をもってその粉体中に吸着された染料固
型分（ｍｇ／ｇ）とする。1g of powder with an average particle size of 15μ in 100cc of water at room temperature
and 2% by weight of Food B1ack2 while stirring.
The aqueous solution containing the powder is dropped at a rate of 1 cc/min, and the point at which the liquid starts to be colored is defined as the dye solid content (mg/g) adsorbed in the powder.
アルミナ又はアルミナ水和物の吸着能が前記範囲を逸脱
する場合には、十分な発色と解像度が得られない虞れが
あるので好ましくない。If the adsorption capacity of alumina or alumina hydrate deviates from the above range, it is not preferable because there is a risk that sufficient color development and resolution will not be obtained.
かかるアルミナ又はアルミナ水和物としては種々のもの
を採用し得るが、とりわけ擬ベーマイトを採用する場合
には特に発色性が優れているので好ましい。Various types of alumina or alumina hydrate can be used, but pseudo-boehmite is particularly preferred since it has excellent coloring properties.
かかる擬ベーマイトとしては、後述する実施例に示した
如き触媒化成工業■から市販されている商品名「カタロ
イドＡＳ−３Ｊの如き、Ａｌ２Ｏ３固型分に換算して７
重量％を含有するアルミナゾルを純水により１００倍に
稀釈し、これを親水化したコロジオン膜上に滴下して乾
燥せしめた場合、一定方向に配向した毛状束のアルミナ
水和物の集合体を形成する様なアルミナゾルのゲル化物
が最適である。Such pseudo-boehmite may be commercially available from Catalysts and Chemicals Industry (■) as shown in the examples below, under the trade name "Cataroid AS-3J," which has an Al2O3 solid content of 7.
When an alumina sol containing 100% by weight is diluted 100 times with pure water and dropped onto a hydrophilized collodion film and dried, an aggregate of alumina hydrate in hair-like bundles oriented in a certain direction is formed. A gelled product of alumina sol that can be formed is most suitable.
又、色素の担持層は、その半径４０〜１００人未満を有
する細孔の全容積が０．１以上０．４ｃｃ／ｇ未満であ
るのが好ましい。かかる物性が前記範囲に満たない場合
には色素の吸収性が不十分となり、逆に前記範囲を超え
る場合には透明性が損われ、白っぽい発色となる虞れが
あるので何れも好ましくない。そして上記物性に加えて
半径１００〜１０００人を有する細孔の全容積が０．１
ｃｃ／ｇ以下にするとより鮮明な画像が得られ、そして
更に加つるに半径１０〜４０人未満を有する細孔の全容
積が０．２〜１．０ｃｃ／ｇにすると、更に一層鮮明な
画像が得られるので特に好ましい。Further, in the dye-supporting layer, the total volume of pores having a radius of 40 to less than 100 pores is preferably 0.1 or more and less than 0.4 cc/g. If the physical properties are less than the above range, the absorption of the dye will be insufficient, and if they exceed the above range, the transparency may be impaired and a whitish color may develop, so neither is preferable. In addition to the above physical properties, the total volume of pores with a radius of 100 to 1000 is 0.1
cc/g or less, a clearer image is obtained, and in addition, when the total volume of pores with a radius of 10 to less than 40 cc/g is 0.2 to 1.0 cc/g, an even clearer image is obtained. This is particularly preferable because it provides the following.
尚、本発明における細孔径分布の測定は、オミクロンテ
クノロジー社製のオムニソーブ１００を用いた窒素吸脱
着法により行なった。The pore size distribution in the present invention was measured by a nitrogen adsorption/desorption method using Omnisorb 100 manufactured by Omicron Technology.
又、かかる色素の担持層の厚さは印刷に用いられるイン
ク量等により厳密には決定されるが、一般には１〜２０
μ程度を採用するのが適当である。厚さが前記範囲に満
たない場合には発色が不十分となり、逆に前記範囲を超
える場合には層の機械的強度が低下したり、透明性が阻
害される虞れがあるので何れも好ましくない。The thickness of the dye-carrying layer is strictly determined by the amount of ink used for printing, but generally it is 1 to 20 mm.
It is appropriate to adopt a value on the order of μ. If the thickness is less than the above range, the color development will be insufficient, and if it exceeds the above range, the mechanical strength of the layer may decrease or the transparency may be impaired, so both are preferred. do not have.
色素の担持層を基材上に形成する手段としては種々の方
法を採用し得るが、例えば予めアルミナ水和物とバイン
ダーの混合スラリーを調製しておき、これをロールコー
タ−エアナイフコーター ブレードコーター ロッドコ
ーター、バーコーター等の各種コーターにより、基材上
に塗布乾燥する方法が好適である。又、アルミナ水和物
としては所謂アルミナゾルを用いると発色層として好ま
しい形態を得やすく好適であるが、所望により粉末状の
原料を用いることも可能である。Various methods can be used to form the dye-carrying layer on the base material, but for example, a mixed slurry of alumina hydrate and a binder is prepared in advance, and the slurry is coated with a roll coater, air knife coater, blade coater, or rod. A method of applying and drying the coating onto a substrate using various coaters such as a coater and a bar coater is suitable. Further, it is preferable to use so-called alumina sol as the alumina hydrate because it makes it easy to obtain a preferred form as a coloring layer, but it is also possible to use a powdered raw material if desired.
バインダーとしては、一般にデンプンやその変成物、Ｐ
ＶＡやその変成物、ＳＢＲラテックス、ＮＢＲラテック
ス、ヒドロキシセルロース、ポリビニルピロリドン等の
有機物を用いることが出来る。Binders generally include starch, its modified products, and P.
Organic substances such as VA or modified products thereof, SBR latex, NBR latex, hydroxycellulose, and polyvinylpyrrolidone can be used.
本発明に用いられる基材としては、一般に透明基材が用
いられ、例えばポリエチレンテレフタレート、ポリエス
テル、ジアセテート等の有機質フィルムやシート、各種
ガラス等が用いられる。As the base material used in the present invention, a transparent base material is generally used, and for example, an organic film or sheet such as polyethylene terephthalate, polyester, or diacetate, or various types of glass are used.
これら基材の厚さは目的により選ばれ、特に限定されな
い。これら基材は、色素の担持層となるアルミナ水和物
等との接着性を改善する目的で必要に応じ、コロナ放電
処理等の表面処理やプレコート層を設けることも出来る
。The thickness of these base materials is selected depending on the purpose and is not particularly limited. These base materials can be surface treated, such as corona discharge treatment, or provided with a precoat layer, if necessary, for the purpose of improving adhesion to alumina hydrate, etc., which will serve as a dye-carrying layer.
かくして本発明においては色素の担持層の上に、インク
中の溶媒のみを担持し得る層を剥離可能な状態に設ける
。かかる溶媒担持層は、有機質のシート状物であり、イ
ンク中の溶媒は担持するが、色素は透過する性質を有す
ることが必要である。Thus, in the present invention, a layer capable of supporting only the solvent in the ink is provided on the dye-supporting layer in a releasable state. Such a solvent-supporting layer is an organic sheet-like material that supports the solvent in the ink but must have the property of transmitting the dye.
かかる溶媒担持層の具体例としては、ペンゾグアナミン
とホルムアルデヒドの縮合体が好適である。As a specific example of such a solvent-supported layer, a condensate of penzoguanamine and formaldehyde is suitable.
この縮合体は粉体であり、単独では膜状物は得られず、
本発明においては親水性の多孔質ウレタンを造膜材とし
て用いるのが好ましい。This condensate is a powder and cannot be used alone to form a film.
In the present invention, it is preferable to use hydrophilic porous urethane as the film forming material.
前記縮合体は、造膜材中に混合される様にして分散状態
で存在せしめることも出来るが、色素の担持層との界面
部分に偏在するようにせしめる方がインク中の溶媒を効
果的に担持せしめる得るので好ましい。The condensate can be present in a dispersed state by being mixed into the film-forming material, but it is better to have it unevenly distributed at the interface with the dye-carrying layer to effectively remove the solvent in the ink. This is preferable because it can be supported.
この様な状態を層比せしめるには、例えば予め形成され
た色素の担持層の」二に前記縮合体の懸濁液を前記した
各種コーターによりコートし、成る程度乾燥後、更にそ
の上に吸水性の多孔質膜になり得る液状ウレタンなコー
トすることにより達成せしめられる。In order to compare the layers in such a state, for example, a suspension of the condensate is coated on a pre-formed dye-carrying layer using the various coaters described above, and after drying to a certain extent, a water-absorbing layer is further applied on top of the suspension. This is accomplished by coating with liquid urethane, which can form a porous membrane.
本発明において前記縮合体部分の見掛は上の厚さは、こ
れがあまり薄すぎると十分溶媒を担持するここが出来ず
、逆にあまり厚すぎると色素の迅速な透過を妨げ、又単
にコスト高となるので好ましくない。この為見掛け」−
の厚さは１０〜５０μ程度を採用するのが適当である。In the present invention, if the apparent thickness of the condensate part is too thin, it will not be able to sufficiently support the solvent, and if it is too thick, it will impede the quick permeation of the dye, or it will simply increase the cost. This is not desirable. For this reason, it appears”−
It is appropriate to adopt a thickness of about 10 to 50 μm.
又、前記親水性多孔質ウレタン膜の厚さは、これがあま
り薄すぎると前記縮合体を膜状に保持し難く、逆にあま
り厚すぎるヒインクの迅速な透過を妨げ、又コスト高と
なるので何れも好ましくない。この為厚さをｌＯ〜４０
μ程度を採用するのが適当である。In addition, the thickness of the hydrophilic porous urethane membrane is such that if it is too thin, it will be difficult to hold the condensate in the form of a membrane, and if it is too thick, it will prevent the rapid permeation of the hyphenate, and the cost will be high. I also don't like it. For this reason, the thickness should be set to lO~40
It is appropriate to adopt a value on the order of μ.
本発明に用いられる吸水性の多孔質ウレタン層しては、
造膜性に萬み、膜化した場合、１〜１０Ｉｚの微細孔が
多数形成されるものが好ましく、例えば大日本インキ社
製の商品名ゾルティックスＰＸＩＩＯＦは好適に使用さ
れる。The water-absorbing porous urethane layer used in the present invention is
It is preferable to have good film-forming properties and form a large number of micropores of 1 to 10 Iz when formed into a film. For example, ZOLTIX PXIIOF (trade name, manufactured by Dainippon Ink Co., Ltd.) is preferably used.
本発明においては、印字後において前記縮合体を含む多
孔質ウレタン層、即ち溶媒担持層は除去せしめる為、容
易に剥離することが出来なければならない。かくする為
には、前述した様なバインダーの稀薄液を縮合体中に含
有せしめてこれを色素の担持層上に施こすことにより達
成される。In the present invention, the porous urethane layer containing the condensate, ie, the solvent-supported layer, is removed after printing, so it must be able to be easily peeled off. This can be accomplished by incorporating a dilute solution of the binder as described above into the condensate and applying it onto the dye-carrying layer.
かくして得られた色素の担持層と溶媒の担持層とを有す
る記録用シートを用いて印刷を行なうと、色素と溶媒が
夫々の担持層に担持され、印刷後、溶媒の担持層を剥離
することにより、鮮明な印刷物を得ることが可能となる
。When printing is performed using the thus obtained recording sheet having a dye-carrying layer and a solvent-carrying layer, the dye and the solvent are carried by the respective carrying layers, and after printing, the solvent-carrying layer cannot be peeled off. This makes it possible to obtain clear printed matter.
本発明による記録シートは基祠を透明体どすることによ
り、ＯＨＰ用シートとして有用であるが、所望により基
材を不透明体とする通常の印刷用シートとしても用い得
る。The recording sheet according to the present invention is useful as an OHP sheet by making the base material transparent, but it can also be used as a normal printing sheet by making the base material opaque if desired.
［実施例］
実施例、比較例で得られた記録用シートの評価は次の方
法で実施した。[Example] The recording sheets obtained in the Examples and Comparative Examples were evaluated by the following method.
色濃度：印字したシートの記録面の裏側の反射色濃度を
ザクラデンシトメータＰＤＡ４５で測定した。Color density: The reflected color density on the back side of the recording surface of the printed sheet was measured using a Sakura densitometer PDA45.
解像度：印字したシートのパターンの滲み具合から４段
階で評価した。Resolution: Evaluated on a four-level scale based on the degree of blurring of the pattern on the printed sheet.
ＣＯ，Ｏ，△、Ｘの順に悪くなる）
剥離性：膜の剥離性の難易性、得られた記録シートの透
明性により３段階で評価し
た。（○、Δ、×の順に悪くなる）
実施例１
擬ベーマイトゾル（触媒化成社製ＡＳ−３） ５部（固
型分）、ポリビニルアルコール（クラレ社製ＰＶＡ１１
７） １部（固型分）及び水から成る固型分１０％の
塗工液を調製し、厚さ１００μのポリエチレンテレフタ
レートフィルム（東し社製）に、バーコーターにより乾
燥時の塗工量が９ｇ／ ｍ ２となる様に塗工し、乾燥
した。(Deterioration occurs in the order of CO, O, △, and (Deterioration occurs in the order of ○, Δ, and ×) Example 1 Pseudo-boehmite sol (AS-3 manufactured by Catalysts Kasei Co., Ltd.) 5 parts (solid content), polyvinyl alcohol (PVA11 manufactured by Kuraray Co., Ltd.)
7) Prepare a coating solution with a solid content of 10% consisting of 1 part (solid content) and water, and apply it to a polyethylene terephthalate film (manufactured by Toshisha Co., Ltd.) with a thickness of 100 μm using a bar coater to coat the coating amount when dry. It was coated so that the amount was 9 g/m 2 and dried.
次いでこの上にベンゾグアナミン・ホルムアルデヒド縮
合体（日本触媒化学社製エポスター１□・ＭＳ） ５０
部（固型分）、ポリビニルアルコール（同上）１部（固
型分）及び水から成る固型公約ｌＯ％の塗工液を調製し
、乾燥時の塗工量が１０ｇ ／ ｍ ２となる様に塗工
し、乾燥した。そして更にこの上に多孔質ウレタン（大
日本インキ社製ゾルティックスＰＸ−１１０Ｆ）４０部
、キシレン２０部、メチルエチル４１７１０部をホモミ
キサーで強力撹拌し、更に水を２０部添加混合した得た
塗工液を乾燥時の塗工量が１５ｇ／ｍ”になる様にパー
コーターにより塗工し、乾燥して記録シートを得た。Then, on top of this, benzoguanamine/formaldehyde condensate (Epostor 1□/MS manufactured by Nippon Shokubai Kagaku Co., Ltd.) 50
1 part (solid content), polyvinyl alcohol (same as above), 1 part (solid content), and water to prepare a coating liquid with a solidity ratio of 10%, so that the coating amount when dry is 10 g / m 2 was applied and dried. Then, on top of this, 40 parts of porous urethane (Zoltix PX-110F manufactured by Dainippon Ink Co., Ltd.), 20 parts of xylene, and 41,710 parts of methyl ethyl were strongly stirred with a homomixer, and 20 parts of water was further added and mixed to obtain a coating. The liquid was applied using a percoater so that the dry coating weight was 15 g/m'', and the recording sheet was dried.
この記録シートにキャノン社製フルカラープリンターＦ
Ｐ−５１０を用いて常法により印字後、膜を剥離した処
、透明な記録物を得た。これの物性は第１表の通りであ
った。This record sheet is printed on Canon's full color printer F.
After printing using P-510 in a conventional manner, the film was peeled off to obtain a transparent recorded matter. The physical properties of this were as shown in Table 1.
実施例２
実施例１で用いたベンゾグアナミン・ホルムアルデヒド
縮合体に代えてベンゾグアナミン・メラミンホルムアル
デヒド縮合体（日本触媒化学社製エポスターＭ３（１）
を用いた以外、実施例１と同様にして記録物を得た。Example 2 In place of the benzoguanamine/formaldehyde condensate used in Example 1, a benzoguanamine/melamine formaldehyde condensate (Epostor M3 (1) manufactured by Nippon Shokubai Kagaku Co., Ltd.) was used.
A recorded matter was obtained in the same manner as in Example 1 except that .
これの物性は第１表の通りであった。The physical properties of this were as shown in Table 1.
実施例３
実施例１で用いたベンゾグアナミン・ホルムアルデヒド
縮合体に代えてメラミン・ホルムアルデヒド縮合体（日
本触媒化学社製エポスターＳ１２・Ｓ）を用いた以外、
実施例１と同様にして記録物を得た。Example 3 Except for using a melamine formaldehyde condensate (Epostor S12/S manufactured by Nippon Shokubai Kagaku Co., Ltd.) in place of the benzoguanamine formaldehyde condensate used in Example 1,
A recorded matter was obtained in the same manner as in Example 1.
これの物性は第１表の通りであった。The physical properties of this were as shown in Table 1.
Claims (1)
中の溶媒は担持するが色素は透過し、且剥離可能な有機
質シート状の溶媒担持層を有する記録用シート。 ２、色素の担持層は、吸着能が２０〜１００ｍｇ／ｇを
有すアルミナ又はアルミナ水和物である請求項（１）の
記録用シート。 ３、アルミナ又はアルミナ水和物は擬ベーマイトである
請求項（２）の記録用シート。 ４、擬ベーマイトがＡｌ＿２Ｏ＿３固型分に換算して７
重量％を含有するアルミナゾルを純水により１００倍に
稀釈し、これを親水化したコロジオン膜上に滴下して乾
燥せしめた場合、一定方向に配向した毛状束のアルミナ
化合物の集合体を形成する様なアルミナゾルのゲル化物
である請求項（３）の記録用シート。 ５、色素の担持層は、その半径４０〜１００Å未満を有
する細孔の全容積が０．１以上０．４ｃｃ／ｇ未満であ
る請求項（２）又は（３）又は（４）の記録用シート。 ６、色素の担持層は、その半径４０〜１００Å未満を有
する細孔の全容積が０．１以上０．４ｃｃ／ｇ未満であ
り、半径１００〜１０００Åを有する細孔の全容積が０
．１ｃｃ／ｇ以下である請求項（２）又は（３）又は（
４）の記録用シート。 ７、色素の担持層は、その半径１０〜４０Å未満を有す
る細孔の全容積が０．２〜１．０ｃｃ／ｇ未満、半径４
０〜１００Å未満を有する細孔の全容積が０．１以上０
．４ｃｃ／ｇ未満、半径１００〜１０００Åを有する細
孔の全容積が０．１ｃｃ／ｇ以下である請求項（２）又
は（３）又は（４）の記録用シート。 ８、溶媒担持層は、ベンゾグアナミンとホルムアルデヒ
ドの縮合体を吸水性の多孔質ウレタンによりシート状に
製膜されたものである請求項（１）の記録用シート。 ９、溶媒担持層は、ベンゾグアナミンとメラミンホルム
アルデヒドの縮合体を吸水性の多孔質ウレタンによりシ
ート状に製膜されたものである請求項（１）の記録用シ
ート。 １０、溶媒担持層は、メラミンとホルムアルデヒドの縮
合体を吸水性の多孔質ウレタンによりシート状に製膜さ
れたものである請求項（１）の記録用シート。 １１、吸水性の多孔質ウレタンは、造膜性に富み、膜化
した場合１〜１０μの微細孔が多数形成されるものであ
る請求項（１）の記録用シート。[Scope of Claims] 1. A pigment-supporting layer is provided on a base material, and a solvent-supporting layer in the form of an organic sheet that supports the solvent in the ink but transmits the pigment and is removable is further provided on the layer. Recording sheet. 2. The recording sheet according to claim 1, wherein the dye-supporting layer is alumina or alumina hydrate having an adsorption capacity of 20 to 100 mg/g. 3. The recording sheet according to claim (2), wherein the alumina or alumina hydrate is pseudoboehmite. 4. Pseudo-boehmite is 7 in terms of Al_2O_3 solid content
When an alumina sol containing % by weight is diluted 100 times with pure water and dropped onto a hydrophilized collodion film and dried, an aggregate of alumina compounds in hair-like bundles oriented in a certain direction is formed. The recording sheet according to claim 3, which is a gelled product of an alumina sol. 5. The recording material according to claim (2) or (3) or (4), wherein the dye-supporting layer has pores with a radius of 40 to less than 100 angstroms whose total volume is 0.1 or more and less than 0.4 cc/g. sheet. 6. The dye-supporting layer has pores with a radius of 40 to less than 100 Å with a total volume of 0.1 or more and less than 0.4 cc/g, and pores with a radius of 100 to 1000 Å with a total volume of 0.
．． Claim (2) or (3) or (
4) Recording sheet. 7. The dye-supporting layer has a total volume of pores with a radius of 10 to less than 40 Å, a total volume of 0.2 to less than 1.0 cc/g, and a radius of 4
The total volume of pores with a diameter of 0 to less than 100 Å is 0.1 or more
．． The recording sheet according to claim 2, wherein the total volume of pores having a diameter of less than 4 cc/g and a radius of 100 to 1000 angstroms is 0.1 cc/g or less. 8. The recording sheet according to claim 1, wherein the solvent supporting layer is formed into a sheet of water-absorbing porous urethane made of a condensate of benzoguanamine and formaldehyde. 9. The recording sheet according to claim 1, wherein the solvent supporting layer is formed into a sheet of a water-absorbing porous urethane containing a condensate of benzoguanamine and melamine formaldehyde. 10. The recording sheet according to claim 1, wherein the solvent supporting layer is formed into a sheet of water-absorbing porous urethane containing a condensate of melamine and formaldehyde. 11. The recording sheet according to claim 1, wherein the water-absorbing porous urethane has excellent film-forming properties and forms many micropores of 1 to 10 μm when formed into a film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1201402A JPH0365375A (en) | 1989-08-04 | 1989-08-04 | Recording sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1201402A JPH0365375A (en) | 1989-08-04 | 1989-08-04 | Recording sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0365375A true JPH0365375A (en) | 1991-03-20 |
Family
ID=16440493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1201402A Pending JPH0365375A (en) | 1989-08-04 | 1989-08-04 | Recording sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0365375A (en) |
-
1989
- 1989-08-04 JP JP1201402A patent/JPH0365375A/en active Pending
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