JPH08324103A - Image receiving material for aqueous ink and reutilization thereof - Google Patents
Image receiving material for aqueous ink and reutilization thereofInfo
- Publication number
- JPH08324103A JPH08324103A JP7155355A JP15535595A JPH08324103A JP H08324103 A JPH08324103 A JP H08324103A JP 7155355 A JP7155355 A JP 7155355A JP 15535595 A JP15535595 A JP 15535595A JP H08324103 A JPH08324103 A JP H08324103A
- Authority
- JP
- Japan
- Prior art keywords
- water
- ink
- hydroxypropyl cellulose
- surface layer
- recording
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は水性インク用被記録材
とその再利用方法に関し、さらに詳しくは、水性インク
の吸収性がよく、インクの広がりが少なくて解像度の高
い画質などの良好な記録ができる水性インク用被記録
材、さらに水によって水性インクによる記録を容易に除
去でき、繰り返し利用できる水性インク用被記録材とそ
の再利用方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording material for water-based ink and a method for reusing the recording material, and more specifically, it has good absorption of water-based ink, less ink spread, and good recording with high resolution. The present invention relates to a recording material for water-based ink, a recording material for water-based ink which can be easily reused by water, and a method of reusing the recording material.
【０００２】[0002]
【従来の技術】水性インクによる記録は、環境や人体に
対する悪影響が少ないため、様々な分野で使用され、従
来からの水性ペン、ペンプロッタ等に加えて、近年では
インクジェットプリンタ等が広く普及し、使用量が拡大
してきている。2. Description of the Related Art Since recording with water-based ink has little adverse effect on the environment and the human body, it is used in various fields. In addition to conventional water-based pens, pen plotters, etc., inkjet printers, etc. have become widespread in recent years. Usage is expanding.
【０００３】このような水性インクの記録に用いる被記
録材としては、紙が一般的であるが、近年、オ−バ−ヘ
ッドプロジェクタ用、製図用等で樹脂製シ−トに記録す
る必要のある場合が多く、特に、オ−バ−ヘッドプロジ
ェクタ用シ−トへの記録は、インクジェットプリンタの
普及とともに増加している。Paper is generally used as a recording material used for recording such an aqueous ink, but in recent years, it is necessary to record on a resin sheet for an over head projector, drawing, etc. In many cases, recording on sheets for overhead projectors is increasing with the spread of ink jet printers.
【０００４】しかしながら、水性インクの主成分は、一
般に水または水に高沸点のアルコ−ル等を混合したもの
であるため、基材が樹脂製フィルムである静電複写機用
のオ−バ−ヘッドプロジェクタ用シ−ト等に用いると、
水性インクが全く吸収されずにはじかれてしまったり、
いつまでも乾かずに触れたりすると取れてしまったりす
る。However, since the main component of the water-based ink is generally water or a mixture of water and a high-boiling alcohol or the like, the base material is a resin film for an electrostatic copying machine. When used for a head projector sheet, etc.,
If the water-based ink is not absorbed at all and it is repelled,
If you touch it without drying it, it may come off.
【０００５】このため、表面層に高吸水性樹脂や水溶性
樹脂を用いたり（特公昭６４−５５５２号、特開昭６０
−２２４５７８号、特開昭６１−２４４９３号）、ま
た、無機または有機粒子を混入して多孔性にしたり（特
開昭６１−２４４９４号、特開昭６０−２１９０８３
号、特開昭５７−１４０９１号）、表面に凹凸を設けて
インクの乗りをよくする（特開昭６１−１２７３８６
号）等の方法で、インクの吸収性を改善することが行わ
れている。Therefore, a super absorbent resin or a water-soluble resin may be used for the surface layer (Japanese Patent Publication No. 64-5522, Japanese Patent Laid-Open No. 6052).
No. 224578, JP-A 61-24493), or by mixing inorganic or organic particles to make it porous (JP-A 61-24494, JP-A 60-219083).
No. JP-A-57-14091), providing unevenness on the surface to improve ink transfer (JP-A-61-127386).
No.) and the like are used to improve the ink absorbency.
【０００６】[0006]
【発明が解決しようとする課題】ところが、表面層に高
吸水性樹脂や水溶性樹脂を用いたり、無機または有機粒
子を混入して多孔性にしたり、表面に凹凸を設けるなど
の方法では、実用に耐えうるインクの吸収性や乗りが得
られるものの、水性インクが広がりやすく、解像度の高
い画質が得られないという問題があった。However, in a method such as using a highly water-absorbent resin or a water-soluble resin in the surface layer, mixing inorganic or organic particles to make it porous, or providing irregularities on the surface, practical methods are used. However, there is a problem in that the water-based ink tends to spread and the high-resolution image quality cannot be obtained.
【０００７】また、基材が樹脂製フィルムであるオ−バ
−ヘッドプロジェクタ用シ−ト等は、表面層に高吸水性
樹脂や水溶性樹脂を用いたり、無機または有機粒子を混
入して多孔性にしたり、表面に凹凸を設けたりしなけれ
ばならないため一般に高価であり、さらに、使い捨てに
すると環境破壊につながるゴミを発生するため、回収し
て再生したり、再利用することが望まれるが、リサイク
ル技術は未だ確立されていない。Sheets for over head projectors, whose base material is a resin film, use a highly water-absorbent resin or water-soluble resin in the surface layer, or are mixed with inorganic or organic particles to form a porous layer. In general, it is expensive because it has to be made to have a good property or has unevenness on the surface, and further, when it is thrown away, dust that causes environmental damage is generated, so it is desirable to collect and recycle it, or reuse it. , Recycling technology has not been established yet.
【０００８】この発明はかかる現状に鑑み種々検討を行
った結果なされたもので、基体上にヒドロキシプロピル
セルロ−スを樹脂成分として含有する表面層を設けるこ
とによって、インクの広がりが少なくて解像度の高い画
質などの良好な記録ができる水性インクによる記録に適
した被記録材を提供しようとするものである。The present invention has been made as a result of various investigations in view of the above circumstances. By providing a surface layer containing hydroxypropylcellulose as a resin component on a substrate, the spread of ink is reduced and the resolution is improved. An object of the present invention is to provide a recording material suitable for recording with a water-based ink capable of excellent recording such as high image quality.
【０００９】また、基体上にヒドロキシプロピルセルロ
−スを架橋させた樹脂成分を含有する表面層を設けるこ
とによって、インクの広がりがさらに少なくて、一段と
解像度の高い画質などの良好な記録ができるとともに、
水性インクによる記録の除去を可能にし、再利用可能な
被記録材を提供しようとするものである。Further, by providing a surface layer containing a resin component obtained by crosslinking hydroxypropyl cellulose on the substrate, the spread of the ink is further reduced, and good recording such as a higher resolution image quality can be performed. ,
It is an object of the present invention to provide a reusable recording material that enables the recording to be removed with an aqueous ink.
【００１０】[0010]
【課題を解決するための手段】この発明の水性インク用
被記録材は、基体上に、ヒドロキシプロピルセルロ−ス
を樹脂成分として含有する表面層、またはヒドロキシプ
ロピルセルロ−スを架橋させた樹脂成分を含有する表面
層を設けている。また、この発明の水性インク用被記録
材の再利用方法は、基体上にヒドロキシプロピルセルロ
−スを架橋させた樹脂成分を含有する表面層を設けた水
性インク用被記録材に、水性インクで記録し、この記録
を水により除去して、繰り返し利用するようにしてい
る。The recording material for aqueous ink of the present invention is a surface layer containing hydroxypropyl cellulose as a resin component on a substrate, or a resin component obtained by crosslinking hydroxypropyl cellulose. Is provided on the surface layer. Further, the method for reusing a recording material for an aqueous ink of the present invention provides a recording material for an aqueous ink having a surface layer containing a resin component obtained by cross-linking hydroxypropylcellulose on a substrate. Records are kept and these records are removed with water for repeated use.
【００１１】[0011]
【作用】この発明の水性インク用被記録材は、表面層に
樹脂成分としてヒドロキシプロピルセルロ−スを含有さ
せているため、水性インクに含まれる水や高級アルコ−
ル等の高沸点溶剤の吸収性がよく、水性インクの広がり
が抑制されて解像度の高い画質などの良好な記録が行え
る。Since the recording material for water-based ink of the present invention contains hydroxypropyl cellulose as a resin component in the surface layer, the water or higher alcohol contained in the water-based ink is used.
The high-boiling-point solvent such as a solvent has a good absorptivity, the spread of the water-based ink is suppressed, and good recording such as high-resolution image quality can be performed.
【００１２】また、ヒドロキシプロピルセルロ−スを架
橋させた樹脂成分を含有する表面層を設けたものは、水
性インクに含まれる水や高級アルコ−ル等の高沸点溶剤
の吸収性が一段とよく、水性インクの広がりがさらに抑
制されて一段と解像度の高い画質などの良好な記録が行
えるとともに、この記録を水により除去することがで
き、繰り返し利用することができる。In the case where the surface layer containing the resin component obtained by crosslinking hydroxypropyl cellulose is provided, the absorbability of water and high boiling point solvents such as higher alcohol contained in the aqueous ink is further improved. The spread of the water-based ink is further suppressed, and good recording such as image quality with a higher resolution can be performed, and this recording can be removed with water and can be repeatedly used.
【００１３】この発明において、基体上に設ける表面層
は、樹脂成分としてヒドロキシプロピルセルロ−スを含
有するものであることが好ましく、このヒドロキシプロ
ピルセルロ−スを樹脂成分として含有すると、水性イン
クに含まれる溶剤である水や、高級アルコ−ル等の高沸
点溶剤のいずれにも高い吸収性を有し、その結果、水性
インクの溶剤の吸収・拡散に比べて水性インクの色素の
吸収・拡散が遅くなり、水性インクの広がりが抑制され
て、解像度の高い画質などの良好な記録が行える。In the present invention, the surface layer provided on the substrate preferably contains hydroxypropyl cellulose as a resin component, and when this hydroxypropyl cellulose is contained as a resin component, it is included in the aqueous ink. It has high absorptivity for both water, which is a solvent used, and high-boiling point solvents such as higher alcohols, and as a result, the absorption and diffusion of dyes in water-based inks is higher than the absorption and diffusion of solvents in water-based inks. It becomes slower, the spread of the water-based ink is suppressed, and good recording such as high resolution image quality can be performed.
【００１４】このヒドロキシプロピルセルロ−スは、ヒ
ドロキシプロピル基またはその重合物をセルロ−スに結
合したもので、たとえば、セルロ−ス中の水酸基に酸化
プロピレンを反応させるなどの方法で得られ、セルロ−
スに付加したヒドロキシプロピル基の量は水および高級
アルコ−ル等の溶剤の吸収性の観点から２０％以上９０
％以下（日本薬局方による）であることが好ましい。This hydroxypropyl cellulose is obtained by binding a hydroxypropyl group or a polymer thereof to cellulose, and is obtained by, for example, reacting the hydroxyl group in the cellulose with propylene oxide. −
The amount of hydroxypropyl groups added to the sluice is 20% or more and 90% or more from the viewpoint of absorption of water and solvents such as higher alcohols
% Or less (according to the Japanese Pharmacopoeia) is preferable.
【００１５】このようなヒドロキシプロピルセルロ−ス
は、表面層の硬さ、粘着性、色素の定着性、架橋性等の
種々の特性を改善するため、他の成分を結合してもよ
く、この結合は、たとえば、エポキシ、ハロゲン、イソ
シアネ−ト、カルボン酸、無水カルボン酸、酸塩化物等
の官能基と、セル−ス中の水酸基との反応により結合さ
せて行われ、これらの反応により、アルキル、二重結
合、エポキシ、イソシアネ−ト、カルボン酸、スルホン
酸、リン酸、アミン等の官能基、あるいはこれらの中で
塩になるものの塩等が導入される。Such hydroxypropyl cellulose may be combined with other components in order to improve various properties such as hardness, tackiness, fixability of dye and crosslinkability of the surface layer. Bonding is carried out, for example, by bonding a functional group such as epoxy, halogen, isocyanate, carboxylic acid, carboxylic acid anhydride, and acid chloride with a hydroxyl group in the cell to bond them, and by these reactions, Functional groups such as alkyls, double bonds, epoxies, isocyanates, carboxylic acids, sulfonic acids, phosphoric acids, amines, etc., or salts of those which form salts are introduced.
【００１６】また、この種のヒドロキシプロピルセルロ
−スは、架橋させると、水性インクの広がりを抑制する
効果はより高くなり、一段と解像度の高い画質などの良
好な記録が行える。Further, when this kind of hydroxypropyl cellulose is crosslinked, the effect of suppressing the spread of the aqueous ink is further enhanced, and good recording such as image quality with a higher resolution can be performed.
【００１７】架橋剤としては、タンニン酸、グリオキザ
−ル、メチロ−ルメラミン樹脂、尿素ホルマリン樹脂、
ポリイソシアネ−ト等が使用され、ヒドロキシプロピル
セルロ−スのヒドロキシプロピル基の水酸基に反応させ
て架橋結合される。この他、水酸基以外の架橋性の官能
基をヒドロキシプロピルセルロ−ス中に持たせ、それら
を架橋剤の官能基またはヒドロキシプロピルセルロ−ス
中の官能基と反応させてもよく、これらの官能基をヒド
ロキシプロピルセルロ−ス中に持たせるためには、前記
のようにヒドロキシプロピルセルロ−スに他の成分を結
合させてやればよい。As the crosslinking agent, tannic acid, glyoxal, methylol melamine resin, urea formalin resin,
Polyisocyanate or the like is used, and it is crosslinked by reacting with the hydroxyl group of the hydroxypropyl group of hydroxypropyl cellulose. In addition, a crosslinkable functional group other than a hydroxyl group may be provided in hydroxypropyl cellulose, and these may be reacted with the functional group of the crosslinking agent or the functional group in hydroxypropyl cellulose. In order to allow the compound to be contained in hydroxypropyl cellulose, the other components may be bonded to hydroxypropyl cellulose as described above.
【００１８】さらに、ヒドロキシプロピルセルロ−スを
架橋すると、水に漬けても表面層が溶解してしまうこと
がない特徴を有し、ヒドロキシプロピルセルロ−スが高
い親水性を有しているため、表面層は膨潤し、その内部
にまで水が入り込むことができる。そこで、この発明の
被記録材に水性インクにより記録して印字を施した後水
で洗浄すれば、表面層を失うことなく、記録された印字
の水性インクをほとんど除去することが可能となり、再
び記録することができる。Further, when the hydroxypropyl cellulose is cross-linked, it has a characteristic that the surface layer does not dissolve even when immersed in water, and since hydroxypropyl cellulose has high hydrophilicity, The surface layer swells and water can penetrate into the surface layer. Therefore, if the recording material of the present invention is printed with a water-based ink for printing and then washed with water, it is possible to remove most of the water-based ink of the recorded printing without losing the surface layer. Can be recorded.
【００１９】従って、ヒドロキシプロピルセルロ−スを
架橋させた表面層を有するこの発明の被記録材は、記録
された印字の水性インクを除去して再利用することが可
能である。この際、表面層の膨潤率は、1.５倍以上が水
性インクの除去し易さの観点から好ましく、ゲル分率に
ついては５０％以上が２回目以降の印字性能の観点か
ら、実用上好ましい。Therefore, the recording material of the present invention having the surface layer cross-linked with hydroxypropyl cellulose can be reused by removing the aqueous ink of the recorded print. At this time, the swelling ratio of the surface layer is preferably 1.5 times or more from the viewpoint of easy removal of the aqueous ink, and the gel fraction of 50% or more is practically preferred from the viewpoint of printing performance after the second printing. .
【００２０】この発明における表面層には、上記の樹脂
成分の他、無機または有機フィラ−を含ませることがで
き、これにより水性インクの吸収性が向上して、印字性
が高められ、また層間粘着や水性インク移りの防止等に
も好結果が得られる。The surface layer according to the present invention may contain an inorganic or organic filler in addition to the above resin components, whereby the absorbability of the water-based ink is improved, the printability is enhanced, and the interlayer Good results are also obtained for prevention of adhesion and transfer of aqueous ink.
【００２１】無機フィラ−としては、シリカ、アルミナ
の微粒子等があり、球状、棒状、繊維状、不定形等いず
れの形状のものも用いることができ、有機フィラ−とし
ては、アクリル樹脂、ポリスチレン、ポリウレタン、ナ
イロン、ポリエチレン、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等が挙げられる。Examples of the inorganic filler include fine particles of silica and alumina, and any shape such as spherical, rod-shaped, fibrous, and amorphous can be used. As the organic filler, acrylic resin, polystyrene, Examples thereof include polyurethane, nylon, polyethylene, a condensate of benzoguanamine and (melamine) formaldehyde, and the like.
【００２２】このような無機または有機フィラ−は、短
径が１μｍ以下の微小粒子を使用すると、水性インクの
吸収性に顕著な効果を発揮する。代表的なものとして
は、コロイダルシリカ、シリカゾルまたはアルミナゾル
等が挙げられる。また、水性インクに含まれる水以外の
高沸点アルコ−ル等の吸収性は、シリカ微小粒子を混合
したものが特に優れ、水の吸収性はアルミナ微小粒子を
混合したものが特に優れる場合がしばしばあり、表面層
の上部に主にシリカ微小粒子を含み、下部に主にアルミ
ナ微小粒子を含ませることが効果的である。また、短径
が１μｍ以上のものは層間粘着やインク移りの防止等に
効果があり、これらは必要に応じて単独で使用しても併
用してもよい。Such an inorganic or organic filler exerts a remarkable effect on the absorbability of the aqueous ink when the fine particles having a short diameter of 1 μm or less are used. Typical examples include colloidal silica, silica sol, alumina sol and the like. Further, absorptivity of high boiling point alcohol other than water contained in the water-based ink is particularly excellent when mixed with silica fine particles, and water absorption is often particularly excellent when mixed with alumina fine particles. It is effective that the upper part of the surface layer mainly contains silica fine particles and the lower part mainly contains alumina fine particles. Further, those having a short diameter of 1 μm or more are effective in preventing interlayer adhesion and ink transfer, and these may be used alone or in combination as required.
【００２３】このような無機または有機フィラ−の含有
量は、多すぎると水性インクをはじく傾向を示すことが
あるため、通常５０重量％以下にするのが好ましく、0.
０１〜３０重量％の範囲内にするのがより好ましい。If the content of such an inorganic or organic filler is too large, it may tend to repel the aqueous ink. Therefore, the content is usually preferably 50% by weight or less.
More preferably, it is within the range of 01 to 30% by weight.
【００２４】このような表面層には、上記の樹脂成分お
よび無機フィラ−または有機フィラ−の他、さらに必要
に応じて他の各種の物質を添加使用してもよく、たとえ
ば、帯電防止剤、可塑剤、潤滑剤、染料、顔料、分散
剤、前記以外の他の樹脂成分等が添加使用される。In addition to the above resin component and inorganic filler or organic filler, various other substances may be added to the surface layer, if necessary. For example, an antistatic agent, Plasticizers, lubricants, dyes, pigments, dispersants, resin components other than the above, and the like are added and used.
【００２５】この発明の被記録材は、上記の表面層を基
材上に設けたことを特徴とし、紙を始め各種基材を用い
ることが可能であるが、水性インクの吸収性のない樹脂
フィルム、金属ホイルまたはこれらの複合材や積層材等
を基材とする場合に効果的であり、特に、上記の表面層
を透明なフィルム上に設けたものは、オ−バ−ヘッドプ
ロジェクタ用シ−トとして好適に使用される。なお、オ
−バ−ヘッドプロジェクタ用シ−トとして使用する場
合、画像の視認性を確保するため、全光線または波長５
５０ｎｍの光線の透過率が７０％以上であることが好ま
しい。The recording material of the present invention is characterized in that the above-mentioned surface layer is provided on a base material, and various base materials such as paper can be used, but a resin that does not absorb water-based ink. It is effective when a film, a metal foil, or a composite material or a laminated material of these is used as a base material, and in particular, the above-mentioned surface layer provided on a transparent film is used for an overhead head projector. -Preferably used as When used as a sheet for an over head projector, in order to ensure image visibility, all rays or wavelengths of 5 are used.
It is preferable that the transmittance of light of 50 nm is 70% or more.
【００２６】[0026]
【実施例】次に、この発明の実施例について説明する。 実施例１ ヒドロキシプロピルセルロ−ス（信越化学社製；ＨＰＣ Ｅ １０重量部 Ｆ−Ｇ、ヒドロキシプロピル基５3.４〜７7.５％） 水 ７０ 〃 テトラヒドロフラン ２０ 〃 この組成からなる塗布液を、厚さが１００μｍの易接着
処理（ポリウレタン処理）を施したポリエチレンテレフ
タレ−トフィルム上に５０番のバ−コ−タ−により塗布
し、室温で乾燥した後、１１０℃で５時間高温処理を施
して、厚さが約６μｍの表面層を有する被記録材を作製
した。EXAMPLES Next, examples of the present invention will be described. Example 1 Hydroxypropyl cellulose (manufactured by Shin-Etsu Chemical Co .; HPCE 10 parts by weight FG, hydroxypropyl group 53.4 to 77.5%) Water 70 〃 Tetrahydrofuran 20 〃 On the polyethylene terephthalate film subjected to the easy adhesion treatment (polyurethane treatment) having a size of 100 μm with a No. 50 bar coater, dried at room temperature, and then subjected to a high temperature treatment at 110 ° C. for 5 hours. A recording material having a surface layer with a thickness of about 6 μm was prepared.
【００２７】実施例２ 実施例１における塗布溶液の組成において、新たにポリ
イソシアネ−ト架橋剤（日本ポリウレタン工業社製；Ｄ
Ｃ−３７１２）を0.７５重量部追加した以外は、実施例
１と同様にして被記録材を作製した。Example 2 In the composition of the coating solution in Example 1, a polyisocyanate crosslinking agent (manufactured by Nippon Polyurethane Industry Co., Ltd .; D
A recording material was prepared in the same manner as in Example 1 except that 0.75 part by weight of C-3712) was added.
【００２８】比較例１ インクジエットプリンタ（ヒュ−レットパッカ−ド社
製；ＤｅｓｋＷｒｉｔｅｒ５５０Ｃ）専用オ−バ−ヘッ
ドプロジェクタ用シ−トＨＰ５１６３６Ｇを被記録材と
して用いた。Comparative Example 1 A sheet HP51636G for an over head projector exclusively used for an ink jet printer (manufactured by Hurret Packard; Desk Writer 550C) was used as a recording material.
【００２９】各実施例および比較例で得られた被記録材
に、インクジエットプリンタ（ヒュ−レットパッカ−ド
社製；ＤｅｓｋＷｒｉｔｅｒ５５０Ｃ）で、グレ−のパ
タ−ンによりシアン、マゼンタ、イエロ−のドットを、
またシアン、マゼンタ、イエロ−、ブラックのそれぞれ
のベタを印字し、下記の方法でドットサイズおよび水性
インクの除去性を評価した。Cyan, magenta, and yellow dots were applied to the recording material obtained in each of the examples and comparative examples by an ink jet printer (Hewlet Packard Co., Ltd .; DeskWriter 550C) using a gray pattern. ,
Solids of cyan, magenta, yellow, and black were printed, and the dot size and removability of the water-based ink were evaluated by the following methods.
【００３０】＜ドットサイズ＞グレ−パタ−ン印字部分
の５０倍の拡大写真を光学顕微鏡（オリンパス社製；Ｂ
Ｈ２）により撮影し、写真上でシアン、マゼンタ、イエ
ロ−のドット各１０個の短径を定規により計測し、平均
を求めた。<Dot size> A 50 times magnified photograph of the printed portion of the gray pattern is taken with an optical microscope (Olympus; B
H2) was taken, and the minor axis of each of 10 cyan, magenta, and yellow dots was measured with a ruler on the photograph, and the average was obtained.
【００３１】＜インク除去性＞各色ベタを印字した各被
記録材を水道水中に一晩浸漬し、その前後の各色ベタ印
字部分の印字濃度をマクベス濃度計（マクベス社製；Ｒ
Ｄ９１５）により測定し、濃度の低下率を求めた。表中
には最も低い低下率の値を示した。下記表１はその結果
である。<Ink Removability> Each recording material having a solid print of each color is immersed in tap water overnight, and the print density of the solid print portion of each color before and after that is measured by a Macbeth densitometer (manufactured by Macbeth Co .; R
D915) to determine the rate of decrease in concentration. The value of the lowest reduction rate is shown in the table. Table 1 below shows the results.
【００３２】 [0032]
【００３３】[0033]
【発明の効果】上記表１から明らかなように、この発明
で得られた各被記録材（実施例１および２）は、従来の
オ−バ−ヘッドプロジェクタ用シ−ト（比較例１）に比
し、ドットサイズが小さくなっており、また繰り返し再
使用が可能で、このことからこの発明によれば、ドット
サイズが小さくて、水性インクに適し、また繰り返し再
利用できる被記録材を提供できることがわかる。As is clear from Table 1 above, each recording material (Examples 1 and 2) obtained by the present invention is a sheet for a conventional over head projector (Comparative Example 1). In comparison with the above, the dot size is smaller and it can be reused repeatedly. Therefore, according to the present invention, it is possible to provide a recording material having a small dot size, suitable for water-based ink, and reusable. I know that I can do it.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 宮田 一司 大阪府茨木市丑寅一丁目１番88号 日立マ クセル株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazushi Miyata 1-88, 1-Tora Tora, Ibaraki City, Osaka Prefecture Hitachi Maxell Co., Ltd.
Claims (3)
スを樹脂成分として含有する表面層を設けたことを特徴
とする水性インク用被記録材1. A hydroxypropyl cellulose on a substrate.
A recording material for water-based ink, characterized in that a surface layer containing water as a resin component is provided.
スを架橋させた樹脂成分を含有する表面層を設けたこと
を特徴とする水性インク用被記録材2. Hydroxypropyl cellulose on a substrate
A recording material for water-based ink having a surface layer containing a resin component obtained by crosslinking
を架橋させた樹脂成分を含有する表面層を設けた水性イ
ンク用被記録材に、水性インクで記録し、この記録を水
により除去して、繰り返し利用することを特徴とする水
性インク用被記録材の再利用方法3. A recording material for an aqueous ink having a surface layer containing a resin component obtained by cross-linking hydroxypropyl cellulose on a substrate is recorded with the aqueous ink, and the recording is removed with water, Reusing method of recording material for water-based ink characterized by being repeatedly used
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15535595A JP3908289B2 (en) | 1995-05-29 | 1995-05-29 | Reuse method of recording material for water-based ink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15535595A JP3908289B2 (en) | 1995-05-29 | 1995-05-29 | Reuse method of recording material for water-based ink |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004230999A Division JP2005001395A (en) | 2004-08-06 | 2004-08-06 | Recording material for water-based ink |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08324103A true JPH08324103A (en) | 1996-12-10 |
| JP3908289B2 JP3908289B2 (en) | 2007-04-25 |
Family
ID=15604100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15535595A Expired - Fee Related JP3908289B2 (en) | 1995-05-29 | 1995-05-29 | Reuse method of recording material for water-based ink |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3908289B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6277498B1 (en) | 1998-03-31 | 2001-08-21 | Oji Paper Co., Ltd. | Ink jet recording material process for producing the same and ink jet recording method using the same |
| US9951235B2 (en) | 2014-09-25 | 2018-04-24 | Mimaki Engineering Co., Ltd. | Ink composition, ink jet recording device, ink jet recording method, and method for reusing recording medium |
-
1995
- 1995-05-29 JP JP15535595A patent/JP3908289B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6277498B1 (en) | 1998-03-31 | 2001-08-21 | Oji Paper Co., Ltd. | Ink jet recording material process for producing the same and ink jet recording method using the same |
| US9951235B2 (en) | 2014-09-25 | 2018-04-24 | Mimaki Engineering Co., Ltd. | Ink composition, ink jet recording device, ink jet recording method, and method for reusing recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3908289B2 (en) | 2007-04-25 |
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