JPH04272888A - Coating fluid for recording medium and recording medium - Google Patents
Coating fluid for recording medium and recording mediumInfo
- Publication number
- JPH04272888A JPH04272888A JP3056129A JP5612991A JPH04272888A JP H04272888 A JPH04272888 A JP H04272888A JP 3056129 A JP3056129 A JP 3056129A JP 5612991 A JP5612991 A JP 5612991A JP H04272888 A JPH04272888 A JP H04272888A
- Authority
- JP
- Japan
- Prior art keywords
- porous silica
- recording medium
- silica powder
- coating liquid
- binder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 36
- 238000000576 coating method Methods 0.000 title claims abstract description 36
- 239000012530 fluid Substances 0.000 title abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- 229920001281 polyalkylene Polymers 0.000 claims abstract description 10
- 229920000768 polyamine Polymers 0.000 claims abstract description 10
- 229920002873 Polyethylenimine Polymers 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims abstract description 5
- 239000000741 silica gel Substances 0.000 claims abstract description 4
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 20
- 239000003125 aqueous solvent Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 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
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、シリカ粉末を含有する
スラリーからなる記録媒体用塗工液およびそれを使用し
て得られる記録媒体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating liquid for a recording medium comprising a slurry containing silica powder, and a recording medium obtained using the same.
【０００２】0002
【従来の技術】近年、各種学会、会議等のプレゼンテー
ション用として、従来のスライドプロジェクターに代わ
り、オーバーヘッドプロジェクターが用いられる機会が
多くなっている。また、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ように
なっている。2. Description of the Related Art In recent years, overhead projectors have been increasingly used in place of conventional slide projectors for presentations at various academic conferences and conferences. Furthermore, in the field of printing, transparent printed matter is increasingly required for various publications, packaging, and other uses.
【０００３】これらの透明なフィルムへの印字、印刷は
、基材であるフィルムそれ自体に吸収性が無いため、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。また、不透明な基材におい
ても、吸収性に乏しく、同様な配慮が必要な場合が多い
。[0003] Printing on these transparent films requires special consideration in terms of printing speed and drying compared to printing on ordinary paper because the base film itself has no absorbency. is necessary. Also, opaque base materials often have poor absorbency and require similar considerations.
【０００４】本発明者らは、透明で、吸収性を有さない
基材上に、アルミナ水和物からなる吸着層を設けた記録
用フィルムが、上記の問題点を解決できることを見出し
、既に、特開平２−２７６６７０号などとして提案した
。更に、上記吸着層の上に主として多孔性シリカ粉末か
らなる層を設けた記録用フィルムが、光沢を有し、かつ
、印刷面の強度に優れ、より鮮明な画像を与えることが
できることも見出し、特開平２−２７６６７１号に提案
した。The present inventors have discovered that a recording film in which an adsorption layer made of alumina hydrate is provided on a transparent, non-absorbent base material can solve the above problems, and has already been developed. , JP-A No. 2-276670, etc. Furthermore, the inventors have also discovered that a recording film in which a layer consisting mainly of porous silica powder is provided on the above-mentioned adsorption layer has gloss, has excellent printing surface strength, and can provide clearer images. This was proposed in Japanese Patent Application Laid-Open No. 2-276671.
【０００５】この記録用フィルムは、ポリエチレンテレ
フタレートなどの透明な基材上に、主としてインク中の
色素を吸収、定着する、多孔性アルミナ水和物からなる
層を設け、更にその上に、主としてインク中の溶媒を吸
収する、多孔性シリカ層を設けたものである。この多孔
性シリカ層は、多孔性シリカ粉末と、水系溶媒と、バイ
ンダーとからなる塗工液を、多孔性アルミナ水和物から
なる層の上に塗布し、乾燥することにより形成されてい
る。[0005] This recording film has a layer made of porous alumina hydrate, which mainly absorbs and fixes the pigment in the ink, on a transparent base material such as polyethylene terephthalate. It has a porous silica layer that absorbs the solvent inside. This porous silica layer is formed by applying a coating liquid consisting of porous silica powder, an aqueous solvent, and a binder onto the layer consisting of porous alumina hydrate, and drying the coating liquid.
【０００６】また、各種の基材上に、多孔性シリカ粉末
を含有する層を直接設けた記録用媒体も知られている。[0006] Recording media in which a layer containing porous silica powder is directly provided on various substrates are also known.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、多孔性
シリカ粉末と、水系溶媒と、バインダーとからなる塗工
液は、多孔性シリカ粉末が保存中に沈降することがある
ため、取り扱い性が悪く、塗布作業等が困難であり、特
に、連続塗布作業時にはハンドリングが悪くなるという
問題を有していた。[Problems to be Solved by the Invention] However, a coating liquid consisting of porous silica powder, an aqueous solvent, and a binder is difficult to handle because the porous silica powder may settle during storage. The coating work etc. are difficult, and there is a problem in that handling is particularly poor during continuous coating work.
【０００８】本発明は上記問題点に鑑みてなされたもの
で、その目的は、分散性、経時安定性に優れたシリカ粉
末を含有するスラリーからなる記録媒体用塗工液を提供
することにある。The present invention has been made in view of the above problems, and its object is to provide a coating liquid for recording media comprising a slurry containing silica powder having excellent dispersibility and stability over time. .
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
、本発明の記録媒体用塗工液は、多孔性シリカ粉末と、
水系溶媒と、バインダーと、ポリアルキレンポリアミン
とを含有することを特徴とする。[Means for Solving the Problems] In order to achieve the above object, the coating liquid for recording media of the present invention comprises porous silica powder,
It is characterized by containing an aqueous solvent, a binder, and a polyalkylene polyamine.
【００１０】以下、本発明を好ましい態様を挙げて詳細
に説明する。[0010] The present invention will be explained in detail below by citing preferred embodiments.
【００１１】本発明において多孔性シリカ粉末は、記録
媒体の表面に塗布して多孔質層を形成したとき、インク
中の溶媒等を効果的に吸収できるものであればいずれの
ものを用いてもよいが、特に、平均粒子径２〜１５μｍ
、より好ましくは５〜１０μｍ の沈降性多孔質シリ
カゲルが好ましく採用される。沈降性多孔質シリカゲル
は、平均粒子径が上記の範囲のものであれば、不定形、
球状等いずれのものを用いてもよく、市販されているも
のを用いることもできる。また、多孔性シリカ粉末の使
用量は、塗工液中５〜３０重量％であるのが好ましい。In the present invention, the porous silica powder may be any powder that can effectively absorb the solvent, etc. in the ink when it is applied to the surface of the recording medium to form a porous layer. Good, but especially average particle size of 2 to 15 μm
Preferably, precipitated porous silica gel having a diameter of 5 to 10 μm is preferably employed. Precipitable porous silica gel has an amorphous shape, as long as the average particle size is within the above range.
Any shape such as a spherical shape may be used, and commercially available ones may also be used. Moreover, it is preferable that the amount of porous silica powder used is 5 to 30% by weight in the coating liquid.
【００１２】水系溶媒としては、水が好ましく使用され
る。Water is preferably used as the aqueous solvent.
【００１３】バインダーとしては、一般にデンプンやそ
の変性物、ポリビニルアルコールやその変性物、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でき
る。[0013] As a binder, generally starch or its modified product, polyvinyl alcohol or its modified product, SBR
Organic materials such as latex, NBR latex, hydroxycellulose, and polyvinylpyrrolidone can be used.
【００１４】また、バインダーの使用量は、多孔性シリ
カ粉末とバインダーとの重量比が１５：０．５ 〜１５
：５ となるようにするのが好ましい。バインダーの使
用量が上記範囲に満たない場合は、多孔性シリカ層の機
械的強度が不十分となり、逆に上記範囲を超える場合に
は、多孔性シリカ層のインク吸収性を阻害するおそれが
あるので好ましくない。[0014] The amount of binder used is such that the weight ratio of porous silica powder to binder is 15:0.5 to 15.
:5 is preferable. If the amount of binder used is less than the above range, the mechanical strength of the porous silica layer will be insufficient, and if it exceeds the above range, there is a risk that the ink absorption of the porous silica layer will be inhibited. So I don't like it.
【００１５】ポリアルキレンポリアミンは、本発明の塗
工液中で、多孔性シリカ粉末の分散剤として作用するも
のであって、特に、平均分子量１万〜１０万のポリエチ
レンイミンが好ましく用いられる。ポリアルキレンポリ
アミンの使用量は、多孔性シリカ粉末に対して０．００
５ 〜０．１ 重量％であるのが好ましい。The polyalkylene polyamine acts as a dispersant for the porous silica powder in the coating solution of the present invention, and polyethyleneimine having an average molecular weight of 10,000 to 100,000 is particularly preferably used. The amount of polyalkylene polyamine used is 0.00% based on porous silica powder.
Preferably, it is 5 to 0.1% by weight.
【００１６】このように、本発明の記録媒体用塗工液は
、多孔性シリカ粉末と、水系溶媒と、バインダーと、ポ
リアルキレンポリアミンとを、上記割合で配合して調製
することができる。As described above, the coating liquid for recording media of the present invention can be prepared by blending porous silica powder, an aqueous solvent, a binder, and a polyalkylene polyamine in the above proportions.
【００１７】本発明の記録媒体用塗工液は、各種の基材
上に、直接、または必要に応じて多孔性アルミナ水和物
からなる層などを設けた後、ロールコーター、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、コンマコーターなどを用いて塗布し、乾燥す
ることにより、インク吸収層を形成することができる。
塗膜の厚さは、各プリンター等の仕様、記録に用いられ
るインクやその溶剤の種類、インク量などによって適宜
選択することができる。The coating liquid for recording media of the present invention can be applied directly to various substrates, or after forming a layer of porous alumina hydrate as necessary, using a roll coater, an air knife coater, or a blade. An ink absorbing layer can be formed by coating using a coater, rod coater, bar coater, comma coater, etc. and drying. The thickness of the coating film can be appropriately selected depending on the specifications of each printer, the type of ink and its solvent used for recording, the amount of ink, etc.
【００１８】[0018]
【作用】本発明の記録媒体用塗工液は、上記のようにポ
リアルキレンポリアミンを添加することにより、多孔性
シリカ粉末の分散性が良好となり、多孔性シリカ粉末が
沈降せずに分散した状態を長時間維持できるため、例え
ば連続塗布作業時等においてそのハンドリングを良好に
することができ、また、多孔性シリカ粉末からなる均一
なインク吸収層を形成することが可能となる。[Function] By adding the polyalkylene polyamine as described above, the coating liquid for recording media of the present invention improves the dispersibility of the porous silica powder, and the porous silica powder is dispersed without settling. can be maintained for a long period of time, it is possible to improve handling during continuous coating work, for example, and it is also possible to form a uniform ink absorbing layer made of porous silica powder.
【００１９】ポリアルキレンポリアミンにより分散性が
向上する理由は明らかではないが、多孔性シリカ粉末の
表面のシラノール基に、ポリアルキレンポリアミンの窒
素原子が吸着するとともに、アルキレン鎖の水中への分
散安定効果が発揮されるためであると考えられる。The reason why polyalkylene polyamine improves dispersibility is not clear, but the nitrogen atoms of polyalkylene polyamine are adsorbed to the silanol groups on the surface of porous silica powder, and the dispersion of the alkylene chain in water is stabilized. This is thought to be due to the fact that
【００２０】[0020]
【実施例】実施例
平均分子量７００００ のポリエチレンイミン０．０２
ｇ を含有する水１０８９ｇ に、平均粒子径７μｍ
の多孔性シリカ微粉末である「カープレックス＃８０」
（商品名、塩野義製薬株式会社製）２００ｇを、撹拌し
ながら添加してスラリー状にした後、撹拌を続けながら
、ポリビニルアルコールである「ＰＶＡ１１７ 」（商
品名、クラレ株式会社製）の１０重量％溶液１３３．４
ｇ を加え、更に１５分間撹拌して記録媒体用塗工液
を得た。[Example] Example polyethyleneimine with an average molecular weight of 70,000 0.02
In 1089 g of water containing g, an average particle size of 7 μm
"Carplex #80" is a fine porous silica powder.
(Product name, Shionogi & Co., Ltd.) 200g was added while stirring to form a slurry, and then, while stirring, 10% of polyvinyl alcohol "PVA117" (Product name, Kuraray Co., Ltd.) was added by weight. % solution 133.4
g was added thereto, and the mixture was further stirred for 15 minutes to obtain a coating liquid for a recording medium.
【００２１】得られた塗工液の粘度をＢ型粘度計で測定
したところ、３００ｃｐ であった。また、この塗工液
を２４時間放置した後、沈殿の有無を観察したところ、
沈殿物は観察されなかった。The viscosity of the resulting coating liquid was measured with a B-type viscometer and was found to be 300 cp. In addition, after leaving this coating solution for 24 hours, we observed the presence or absence of precipitation.
No precipitate was observed.
【００２２】比較例
実施例で用いたポリエチレンイミンを使用せず、あとは
実施例と同様にして塗工液を得た。Comparative Example A coating solution was obtained in the same manner as in the example except that the polyethyleneimine used in the example was not used.
【００２３】得られた塗工液の粘度を実施例の塗工液と
同様にして測定したところ、１７０ｃｐ であった。ま
た、この塗工液は、２４時間放置後に、大部分のシリカ
が沈殿しているのが観察された。The viscosity of the resulting coating solution was measured in the same manner as the coating solution of the example, and was found to be 170 cp. In addition, it was observed that most of the silica had precipitated in this coating solution after it was left for 24 hours.
【００２４】[0024]
【発明の効果】以上説明したように、本発明の記録媒体
用塗工液は、分散性、経時安定性に優れ、長時間放置し
ても多孔性シリカ粉末が沈降しないので、取り扱い、塗
布作業、特に、連続塗布作業が容易である。また、この
塗工液を用いることにより、多孔性シリカからなる均一
なインク吸収層を形成することができる。この塗工液を
、基材に塗布した後、乾燥して得られる多孔質シリカ層
を有する記録媒体は、良好なインク吸収性を示す。Effects of the Invention As explained above, the coating liquid for recording media of the present invention has excellent dispersibility and stability over time, and the porous silica powder does not settle even when left for a long time. In particular, continuous coating work is easy. Moreover, by using this coating liquid, a uniform ink absorbing layer made of porous silica can be formed. A recording medium having a porous silica layer obtained by applying this coating liquid to a substrate and drying it exhibits good ink absorbency.
Claims (4)
ダーと、ポリアルキレンポリアミンとを含有することを
特徴とする記録媒体用塗工液。1. A coating liquid for a recording medium, comprising porous silica powder, an aqueous solvent, a binder, and a polyalkylene polyamine.
１５μｍ の沈降性多孔質シリカゲルである請求項１の
記録媒体用塗工液。2. The porous silica powder has an average particle size of 2 to 2.
The coating liquid for a recording medium according to claim 1, which is a precipitated porous silica gel of 15 μm.
チレンイミンである請求項１または２の記録媒体用塗工
液。3. The coating liquid for a recording medium according to claim 1 or 2, wherein the polyalkylene polyamine is polyethyleneimine.
工液を、基材に塗布した後、乾燥して得られる多孔質シ
リカ層を有する記録媒体。4. A recording medium having a porous silica layer obtained by applying the coating liquid for a recording medium according to any one of claims 1 to 3 onto a substrate and then drying the coating liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3056129A JPH04272888A (en) | 1991-02-27 | 1991-02-27 | Coating fluid for recording medium and recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3056129A JPH04272888A (en) | 1991-02-27 | 1991-02-27 | Coating fluid for recording medium and recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04272888A true JPH04272888A (en) | 1992-09-29 |
Family
ID=13018466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3056129A Withdrawn JPH04272888A (en) | 1991-02-27 | 1991-02-27 | Coating fluid for recording medium and recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04272888A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05131741A (en) * | 1991-05-22 | 1993-05-28 | Felix Schoeller Jr Foto & Spezialpapiere Gmbh & Co Kg | Recording material for ink jet recording method |
| EP1226965A3 (en) * | 2001-01-26 | 2004-05-12 | Eastman Kodak Company | Ink jet recording element and printing method |
| US8202926B2 (en) | 2005-12-22 | 2012-06-19 | Eastman Kodak Company | Coating composition containing a dispersant |
-
1991
- 1991-02-27 JP JP3056129A patent/JPH04272888A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05131741A (en) * | 1991-05-22 | 1993-05-28 | Felix Schoeller Jr Foto & Spezialpapiere Gmbh & Co Kg | Recording material for ink jet recording method |
| EP1226965A3 (en) * | 2001-01-26 | 2004-05-12 | Eastman Kodak Company | Ink jet recording element and printing method |
| US8202926B2 (en) | 2005-12-22 | 2012-06-19 | Eastman Kodak Company | Coating composition containing a dispersant |
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| Date | Code | Title | Description |
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| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980514 |