JP2003073602A - Water ink for writing utensil and writing utensil filled with the same - Google Patents
Water ink for writing utensil and writing utensil filled with the sameInfo
- Publication number
- JP2003073602A JP2003073602A JP2001270576A JP2001270576A JP2003073602A JP 2003073602 A JP2003073602 A JP 2003073602A JP 2001270576 A JP2001270576 A JP 2001270576A JP 2001270576 A JP2001270576 A JP 2001270576A JP 2003073602 A JP2003073602 A JP 2003073602A
- Authority
- JP
- Japan
- Prior art keywords
- writing instrument
- writing
- color
- ink
- water
- 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
Landscapes
- Pens And Brushes (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ボールペンやマー
キングペン等の筆記具に用いられる筆記具用水性インキ
及び該水性インキが充填された筆記具に関するものであ
り、更に詳しくは、筆記具用水性インキで書かれた筆記
線が、変色用液を充填した変色筆記具でなぞられること
により、その筆記線を変色させることになる筆記具用水
性インキと該水性インキが充填された筆記具に係るもの
である。TECHNICAL FIELD The present invention relates to a water-based ink for a writing instrument used for a writing instrument such as a ballpoint pen and a marking pen, and a writing instrument filled with the water-based ink. More specifically, it is written with the water-based ink for a writing instrument. The present invention relates to a water-based ink for a writing instrument, which will change the color of the writing line by tracing the writing line with a color-changing writing instrument filled with a color-changing liquid, and a writing instrument filled with the aqueous ink.
【０００２】[0002]
【従来の技術】従来、一度書いた筆記線を消色する筆記
具用インキとして、特公昭５４−２２３４４号公報に開
示されたものが知られている。この筆記具用インキは、
特定の塩基性染料を着色剤として用い、この筆記具用イ
ンキによって書かれた筆記線が、亜硫酸系還元剤を含む
液でなぞられる（重ね書きする）ことにより、なぞられ
た部分の筆記線の色が消えて、無色になるというもので
ある。しかし、この筆記具用インキを用いて書いた文字
の特定部分を消色したくない場合でも、一般に使用して
いる着色剤を含む通常の筆記具用インキが充填された筆
記具で筆記しない限りは望めないという不都合があっ
た。2. Description of the Related Art Conventionally, as an ink for a writing instrument that erases a writing line once written, that disclosed in Japanese Patent Publication No. 54-22344 has been known. This writing ink is
By using a specific basic dye as a coloring agent, the writing line drawn with this writing instrument ink is traced (overwritten) with a liquid containing a sulfite reducing agent, so that the color of the writing line of the traced portion Disappears and becomes colorless. However, even if you do not want to erase the specific part of the character written with this writing ink, you can not expect it unless you write with a writing implement filled with a normal writing ink containing a commonly used coloring agent. There was an inconvenience.
【０００３】[0003]
【発明が解決しようとする課題】そこで本発明は、一度
筆記した筆記線がなぞられると、そのなぞられた部分を
変色するが消色しない筆記具用水性インキ及び該水性イ
ンキが充填された筆記具を提供することを目的とするも
のである。SUMMARY OF THE INVENTION Therefore, the present invention provides a water-based ink for a writing instrument and a writing instrument filled with the water-based ink, which discolors the traced portion once it is traced, but does not erase the color. It is intended to be provided.
【０００４】[0004]
【課題を解決するための手段】この目的を達成するため
に、本発明は、筆記具用水性インキが、亜硫酸系還元剤
により消色される塩基性染料と亜硫酸系還元剤により消
色されない着色剤とを少なくとも含むことを特徴とす
る。この際、前記亜硫酸系還元剤により消色される塩基
性染料の該筆記具用水性インキ中での配合割合は０．１
〜１０質量％が好ましく、前記亜硫酸系還元剤により消
色されない着色剤の該筆記具用水性インキ中の配合割合
は０．１〜１０質量％が好ましい。また本発明は、この
目的を達成するため、前記水性インキが充填された筆記
具と、該筆記具に充填された水性インキに含まれる塩基
性染料を消色する亜硫酸系還元剤を含む変色用液を充填
した変色筆記具とが、対にして用いられることを特徴と
する。この際、前記変色用液は、着色剤を含まれる場合
もあれば、含まれない場合もある。In order to achieve this object, the present invention provides a water-based ink for a writing instrument which comprises a basic dye which is decolorized by a sulfite reducing agent and a colorant which is not decolorized by a sulfite reducing agent. It is characterized by including at least and. At this time, the mixing ratio of the basic dye that is decolorized by the sulfite reducing agent in the water-based ink for a writing instrument is 0.1.
It is preferably from 10 to 10% by mass, and the compounding ratio of the colorant which is not erased by the sulfite reducing agent in the water-based ink for writing instruments is preferably from 0.1 to 10% by mass. Further, in order to achieve this object, the present invention provides a writing instrument filled with the aqueous ink, and a discoloring liquid containing a sulfite reducing agent that decolorizes a basic dye contained in the aqueous ink filled in the writing instrument. It is characterized in that the filled discoloration writing instrument is used in pairs. At this time, the color change liquid may or may not contain a colorant.
【０００５】上記筆記具用水性インキが充填されたボー
ルペンやマーキングペン等の筆記具によって書かれた筆
記線は、筆記当初には、亜硫酸系還元剤により消色され
る塩基性染料の色と、亜硫酸系還元剤により消色されな
い着色剤の色とが混合された色となる。そして、この筆
記線の上から亜硫酸系還元剤を含む変色用液が充填され
た変色筆記具で重ね書きすると、亜硫酸系還元剤により
上記塩基性染料が還元されてその色が消え、亜硫酸系還
元剤により消色されない上記着色剤の色が残って、重ね
書きされた部分の筆記線の色が変化することになる。A writing line drawn by a writing instrument such as a ballpoint pen or a marking pen filled with the above-mentioned aqueous ink for a writing instrument has a color of a basic dye which is decolorized by a sulfite reducing agent at the beginning of writing, and a sulfite type. The color is a mixture of the color of the colorant that is not erased by the reducing agent. Then, when overwriting with a color-changing writing instrument filled with a color-changing liquid containing a sulfite-based reducing agent from above the writing line, the basic dye is reduced by the sulfite-based reducing agent and the color disappears, and the sulfite-based reducing agent is added. As a result, the color of the colorant that is not erased remains, and the color of the writing line in the overwritten portion changes.
【０００６】[0006]
【発明の実施の形態】以下、本発明の好ましい実施の態
様を詳細に説明する。まず、本発明の筆記具用水性イン
キについての好ましい実施の態様を詳細に説明する。本
発明の筆記具用水性インキは、亜硫酸系還元剤により消
色される塩基性染料と、亜硫酸系還元剤により消色され
ない着色剤とを少なくとも含み、これにイオン交換水が
添加される。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described in detail. First, preferred embodiments of the water-based ink for writing instruments of the present invention will be described in detail. The water-based ink for a writing instrument of the present invention contains at least a basic dye that is decolorized by a sulfite-based reducing agent and a colorant that is not decolorized by a sulfite-based reducing agent, and ion-exchanged water is added to this.
【０００７】亜硫酸系還元剤により消色される塩基性染
料としては、例えば、カラーインデックスナンバーで示
すと、カラーインデックス（以降Ｃ．Ｉ．と略称す
る。）Ｂａｓｉｃ Ｏｒａｎｇｅ ２１、Ｃ．Ｉ．Ｂａ
ｓｉｃ Ｒｅｄ １３，同１４、Ｃ．Ｉ．Ｂａｓｉｃ
Ｂｌｕｅ ３，同５４、Ｃ．Ｉ．Ｂａｓｉｃ Ｇｒｅｅ
ｎ１等が使用可能である。これらの染料は、所要の色彩
や色調に応じて単独または併用して使用することができ
る。この亜硫酸系還元剤により消色される塩基性染料
は、本発明の筆記具用水性インキ中に、配合割合で０．
１〜１０質量％含まれることが好ましい。０．１質量％
より低い場合は筆記線の濃度が薄くなり、１０質量％を
越えると該筆記具用水性インキに溶解せずに沈殿する場
合やインキ粘度が上昇する等の弊害が生じてしまう。Examples of the basic dye which is decolorized by the sulfite reducing agent include, for example, a color index (hereinafter referred to as CI) Basic Orange 21, C.I. I. Ba
sic Red 13, 14 and C.I. I. Basic
Blue 3, ibid. 54, C.I. I. Basic Green
n1 or the like can be used. These dyes can be used alone or in combination depending on the required color and tone. The basic dye that is decolorized by the sulfite-based reducing agent is contained in the water-based ink for a writing instrument of the present invention at a blending ratio of 0.
It is preferably contained in an amount of 1 to 10 mass%. 0.1 mass%
If it is lower than this, the concentration of the writing line becomes thin, and if it exceeds 10% by mass, problems such as precipitation without being dissolved in the water-based ink for writing instruments and increase of ink viscosity will occur.
【０００８】亜硫酸系還元剤により消色されない着色剤
としては、上述した亜硫酸系還元剤により消色される塩
基性染料以外の塩基性染料及び顔料を用いることができ
る。ところが、酸性染料または直接染料は、亜硫酸系還
元剤によって消色されるべき塩基性染料と反応し、沈殿
を生じてしまうので使用できない。亜硫酸系還元剤によ
り消色されない着色剤として使用できる塩基性染料とし
ては、例えば、Ｃ．Ｉ．Ｂａｓｉｃ Ｙｅｌｌｏｗ １
１，同２１、Ｃ．Ｉ．Ｂａｓｉｃ Ｒｅｄ １，同１
８、Ｃ．Ｉ．Ｂａｓｉｃ Ｂｌｕｅ ７，同６５等が挙
げられる。また亜硫酸系還元剤により消色されない着色
剤として使用できる顔料としては、例えば、アゾ系、フ
タロシアニン系、キナクドリン系、ジオキサジン系等の
有機顔料、或いはマイカ、酸化チタン、金属微粉末等の
無機顔料が挙げられる。これら亜硫酸系還元剤により消
色されない着色剤も、所要の色彩や色調に応じて単独ま
たは併用して用いることができる。また亜硫酸系還元剤
により消色されない着色剤は、筆記具用水性インキ中に
配合割合で０．１〜１０質量％含まれることが好まし
い。０．１質量％より低い場合は筆記線の濃度が薄くな
り、１０質量％を越えると溶解しない場合やインキ粘度
が上昇する等の弊害を生じてしまう。As the colorant which is not decolorized by the sulfite reducing agent, basic dyes and pigments other than the basic dyes which are decolorized by the sulfite reducing agent can be used. However, acid dyes or direct dyes cannot be used because they react with a basic dye that should be decolorized by a sulfite-based reducing agent and cause precipitation. Examples of the basic dye that can be used as a colorant that is not discolored by the sulfite-based reducing agent include C.I. I. Basic Yellow 1
1, 21 and C.I. I. Basic Red 1 and 1
8, C.I. I. Basic Blue 7, 65 and the like. Examples of the pigment that can be used as a colorant that is not decolorized by a sulfite-based reducing agent include, for example, azo-based, phthalocyanine-based, quinacdrine-based, dioxazine-based organic pigments, mica, titanium oxide, and inorganic pigments such as fine metal powder. Can be mentioned. Colorants that are not decolorized by these sulfite reducing agents can also be used alone or in combination depending on the required color and tone. Further, the colorant which is not decolorized by the sulfite reducing agent is preferably contained in the water-based ink for a writing instrument in an amount of 0.1 to 10% by mass. If it is less than 0.1% by mass, the concentration of the writing line becomes thin, and if it exceeds 10% by mass, it causes problems such as not dissolving or increasing the ink viscosity.
【０００９】本発明の筆記具用水性インキは、従来のも
のと同様に水（イオン交換水）を含み、その配合割合は
５０〜９０質量％が好ましい。更に、必要に応じて、ゲ
ル化剤、増粘剤、防腐剤、水溶性有機溶剤、防錆剤、防
黴剤、染料溶解助剤、ｐＨ調整剤、固着樹脂、表面張力
調整剤等の添加剤を併用することも可能である。The water-based ink for a writing instrument of the present invention contains water (ion-exchanged water) like the conventional ink, and the mixing ratio thereof is preferably 50 to 90% by mass. Further, if necessary, addition of a gelling agent, a thickener, a preservative, a water-soluble organic solvent, an anticorrosive agent, an antifungal agent, a dye dissolution aid, a pH adjusting agent, a fixing resin, a surface tension adjusting agent, etc. It is also possible to use agents together.
【００１０】本発明の筆記具用水性インキは、従来と同
様の手段により、マーキングペンやボールペン等の筆記
具におけるインク収容部に収容され、そのペン先から浸
出するようにして用いられる。以上、本発明の筆記具用
水性インキについての好ましい実施の態様を詳細に説明
した。The water-based ink for a writing instrument of the present invention is stored in an ink storage portion of a writing instrument such as a marking pen or a ballpoint pen by the same means as the conventional one, and is used so as to be leached from the pen tip. The preferred embodiments of the water-based ink for writing instruments of the present invention have been described above in detail.
【００１１】次に、本発明の筆記用具についての好まし
い実施の態様を詳細に説明する。本発明の筆記用具は、
上述した本発明の水性インキが充填された筆記具と、該
筆記具に充填された水性インキに含まれる塩基性染料を
消色する亜硫酸系還元剤を含む変色用液が充填された変
色筆記具とが対にして用いられる。即ち、本発明は、亜
硫酸系還元剤により消色される塩基性染料と、亜硫酸系
還元剤により消色されない着色剤とを少なくとも含む筆
記具用水性インキが充填された筆記具によって筆記され
た筆記線の上から、亜硫酸系還元剤を含む変色用液を充
填した変色筆記具で重ね書きすることで、この重ね書き
された筆記線の部分が変色されるのである。ここで変色
用液とは、本発明の上記水性インキが充填された筆記具
によって筆記された筆記線を重ね書きすることによって
変色させることが可能な液体をいう。Next, preferred embodiments of the writing instrument of the present invention will be described in detail. The writing instrument of the present invention is
A writing instrument filled with the above-described aqueous ink of the present invention and a discoloration writing instrument filled with a discoloration liquid containing a sulfite reducing agent that decolorizes the basic dye contained in the aqueous ink filled in the writing instrument are paired. Is used. That is, the present invention is a basic dye that is decolorized by a sulfite-based reducing agent, and a writing line written by a writing instrument filled with a water-based ink for a writing instrument that contains at least a coloring agent that is not decolorized by a sulfite-based reducing agent. By overwriting with a color-changing writing instrument filled with a color-changing liquid containing a sulfite-based reducing agent from above, the portion of the overwritten writing line is discolored. Here, the color-changing liquid means a liquid capable of being discolored by overwriting a writing line drawn by a writing instrument filled with the water-based ink of the present invention.
【００１２】本発明の上記水性インキが充填された筆記
具によって書かれた筆記線を重ね書きすることによって
変色させることのできる変色用液は、少なくとも亜硫酸
系還元剤を含む。亜硫酸系還元剤としては、例えば、亜
硫酸ナトリウム、亜硫酸カリウム、亜硫酸アンモニウム
等の亜硫酸塩、及びチオ硫酸ナトリウム、チオ硫酸カリ
ウム、チオ硫酸アンモニウム等のチオ硫酸塩等であっ
て、これらが用いられる。The discoloring liquid of the present invention, which can be discolored by overwriting a writing line written by a writing instrument filled with the above water-based ink, contains at least a sulfite reducing agent. Examples of the sulfite-based reducing agent include sulfites such as sodium sulfite, potassium sulfite and ammonium sulfite, and thiosulfates such as sodium thiosulfate, potassium thiosulfate and ammonium thiosulfate, which are used.
【００１３】また、変色用液には、着色剤を混合して用
いることも可能である。即ち、上記の亜硫酸系還元剤を
含む変色用液をマーキングペン等のインキタンクに充填
した変色筆記具は、筆記具用水性インキで書かれた筆記
線に重ね書きされるようにして用いられるが、この変色
用液の充填の際に、併せて着色剤をそのインキタンクに
充填することもできる。この着色剤を混合した変色用液
の充填された変色筆記具を用いて、本発明の上記筆記具
用水性インキを充填した筆記具により書かれた筆記線の
上から重ね書きした場合には、始めに書いた筆記線が変
色するだけでなく、併せて充填された着色剤による着色
のマーキングがなされることともなり、更なる強調効果
が発揮されるようになる。It is also possible to use a colorant mixed with the color changing liquid. That is, a color-changing writing instrument in which an ink tank such as a marking pen is filled with a color-changing liquid containing the above-mentioned sulfite reducing agent is used so as to be overwritten on a writing line written with a water-based ink for a writing instrument. At the time of filling the color-changing liquid, the colorant can also be filled in the ink tank. When the color-changing writing instrument filled with the color-changing liquid mixed with this colorant is used to overwrite from the writing line written by the writing instrument filled with the above-mentioned aqueous ink for writing instruments of the present invention, write first. In addition to the discoloration of the writing line, coloring marking is also performed by the colorant with which the writing line is filled, so that a further enhancement effect is exhibited.
【００１４】変色用液に混合される着色剤としては、上
述した亜硫酸系還元剤によって消色される塩基性染料以
外の着色剤であれば、特に限定されることでなく、用い
ることができる。従って、酸性染料、直接染料等の染
料、或いは有機顔料、無機顔料等を用いることができ
る。そして、これらのうち二種類以上の着色剤を組み合
わせて使用してもよいことはいうまでもない。但し、本
発明の上記筆記具用水性インキの変色後の色よりも薄い
色を呈する着色剤を用いることが好ましい。The colorant to be mixed with the color-changing liquid is not particularly limited as long as it is a colorant other than the basic dye which is decolorized by the above-mentioned sulfite reducing agent. Therefore, an acid dye, a dye such as a direct dye, or an organic pigment or an inorganic pigment can be used. It goes without saying that two or more of these coloring agents may be used in combination. However, it is preferable to use a colorant that exhibits a lighter color than the color of the water-based ink for a writing instrument of the present invention after discoloration.
【００１５】[0015]
【実施例】以下、本発明を実施例により更に詳細に説明
する。まず、以下に示す実施例１〜３は、本発明の筆記
具用水性インキ及び該水性インキが充填された筆記具に
係るものである。
（実施例１）EXAMPLES The present invention will now be described in more detail with reference to examples. First, Examples 1 to 3 shown below relate to a water-based ink for a writing instrument of the present invention and a writing instrument filled with the water-based ink. (Example 1)
【表１】 インキ原料 （質量％）
Ｃ．Ｉ．Ｂａｓｉｃ Ｒｅｄ １３ ５．０
（保土谷化学工業株式会社製、赤色塩基性染料）
Ｃ．Ｉ．Ｂａｓｉｃ Ｂｌｕｅ ７ ５．０
（保土谷化学工業株式会社製、青色塩基性染料）
イオン交換水 ６９．９
グリセリン ２０．０
デルトップ ０．１ （武田薬品工業株式会社製、防腐剤、商品名）
上記表１に示した割合で配合した原料を撹拌機を用いて
撹拌混合し、マーキングペン用紫色水性インキを得た。
次に、市販されている通常の直液式水性マーキングペン
（蛍光スパーキー１、ゼブラ株式会社製、商品名）と同
様に、ポリプロピレン製インキタンクに上記水性インキ
を充填した後、バルブ組込みとともに先口を嵌着し、先
口にポリエステル製繊維束ペン先を組込み、インキタン
クを常圧にして、水性マーキングペンを作製した。[Table 1] Ink raw material (mass%) C.I. I. Basic Red 13 5.0 (Hodogaya Chemical Co., Ltd., red basic dye) C.I. I. Basic Blue 7 5.0 (Hodogaya Chemical Co., Ltd., blue basic dye) Ion-exchanged water 69.9 Glycerin 20.0 Deltop 0.1 (Takeda Chemical Industries, Ltd., preservative, trade name) Above The raw materials blended in the proportions shown in Table 1 were stirred and mixed using a stirrer to obtain a purple aqueous ink for marking pen.
Next, as in the case of a commercially available direct liquid type water-based marking pen (Fluorescent Sparky 1, manufactured by Zebra Co., Ltd., trade name), a polypropylene ink tank is filled with the above-mentioned water-based ink, and then the valve is installed and the tip is opened. Was fitted, a polyester fiber bundle pen tip was incorporated into the tip, and the ink tank was brought to normal pressure to prepare an aqueous marking pen.
【００１６】（実施例２）(Example 2)
【表２】 インキ原料 （質量％）
Ｃ．Ｉ．Ｂａｓｉｃ Ｇｒｅｅｎ １ ３．０
（保土谷化学工業株式会社製、緑色塩基性染料）
Ｃ．Ｉ．Ｂａｓｉｃ Ｏｒａｎｇｅ ２１ １．０
（保土谷化学工業株式会社製、橙色塩基性染料）
Ｃ．Ｉ．Ｂａｓｉｃ Ｒｅｄ １ １．５
（保土谷化学工業株式会社製、赤色塩基性染料）
イオン交換水 ７４．４
グリセリン ２０．０ デルトップ ０．１
上記表２に示した割合で配合した原料を撹拌機を用いて
撹拌混合し、ボールペン用黒色水性インキを得た。この
水性インキを、市販されている通常の水性ボールペン
（Ｂｅ−１０９、ゼブラ株式会社製、商品名）と同様
に、軸筒本体に組込むポリエステル製繊維束中綿に充填
し、この後、インキ誘導用ポリエステル繊維束芯を組込
み、この組込み後に転写ボールが抱持されたステンレス
チップを装填し、水性ボールペンを作製した。[Table 2] Ink raw material (mass%) C.I. I. Basic Green 1 3.0 (Hodogaya Chemical Co., Ltd., green basic dye) C.I. I. Basic Orange 21 1.0 (Hodogaya Chemical Co., Ltd., orange basic dye) C.I. I. Basic Red 1 1.5 (Hodogaya Chemical Co., Ltd., red basic dye) Ion-exchanged water 74.4 Glycerin 20.0 Deltop 0.1 Agitating the raw materials blended in the ratio shown in Table 2 above. The resulting mixture was stirred and mixed to obtain a black aqueous ink for ballpoint pens. This water-based ink is filled into a polyester fiber bundle batting to be incorporated into the barrel body, as in the case of a commercially available water-based ballpoint pen (Be-109, manufactured by Zebra Co., Ltd.). A polyester fiber bundle core was incorporated, and after this incorporation, a stainless steel chip holding a transfer ball was loaded to prepare an aqueous ballpoint pen.
【００１７】（実施例３）(Example 3)
【表３】 インキ原料 （質量％）
Ｃ．Ｉ．Ｂａｓｉｃ Ｂｌｕｅ ５４ ８．０
（保土谷化学工業株式会社製、青色塩基性染料）
Ｈｏｓｔａｆｉｎｅ Ｙｅｌｌｏｗ ＨＲ １５．０
（クラリアントジャパン株式会社製、橙色顔料３５％水分散体）
イオン交換水 ５６．４
グリセリン ２０．０
キサンタンガム ０．５ デルトップ ０．１
上記表３に示した割合で配合した原料をディゾルバーを
用いて撹拌混合し、ボールペン用黒色ゲルインキを得
た。得られたゲルインキの粘度は、１１０mPa・ｓ（２
５℃、剪断速度：１５０ｓ−１）であった。得られたゲ
ルインキを市販されている通常のゲル式水性ボールペン
（ゼブラＢＷ−１００、ステンレスボールチップ径０．
７mm）と同様に、ポリプロピレン製リフィールにインキ
を充填し、尾部よりインキ追従体を注入した上で、遠心
機により１９６０m・ｓ−２（２００Ｇ）の遠心力にて
脱泡し、このリフィールが軸筒に装填されることにより
ゲル式水性ボールペンを作製した。[Table 3] Ink raw material (mass%) C.I. I. Basic Blue 54 8.0 (Hodogaya Chemical Co., Ltd., blue basic dye) Hostafine Yellow HR 15.0 (Clariant Japan KK, orange pigment 35% water dispersion) Ion-exchanged water 56.4 Glycerin 20. 0 Xanthan gum 0.5 Deltop 0.1 The raw materials blended in the proportions shown in Table 3 above were stirred and mixed using a dissolver to obtain a black gel ink for ballpoint pens. The viscosity of the obtained gel ink is 110 mPa · s (2
It was 5 degreeC and the shear rate: 150 s < -1 >. The obtained gel ink is a commercially available ordinary gel type water-based ballpoint pen (Zebra BW-100, stainless ball tip diameter 0.
7 mm), polypropylene refill is filled with ink, an ink follower is injected from the tail, and then defoamed by a centrifugal force of 1960 m · s −2 (200 G) with a centrifuge. A gel type water-based ballpoint pen was prepared by loading in a cylinder.
【００１８】（比較例１）(Comparative Example 1)
【表４】 インキ原料 （質量％）
Ｃ．Ｉ．Ｂａｓｉｃ Ｒｅｄ １ ４．０
（保土谷化学工業株式会社製、赤色塩基性染料）
Ｃ．Ｉ．Ｂａｓｉｃ Ｂｌｕｅ ７ ３．０
（保土谷化学工業株式会社製、青色塩基性染料）
Ｃ．Ｉ．Ｂａｓｉｃ Ｙｅｌｌｏｗ ２１ ３．０
（保土谷化学工業株式会社製、黄色塩基性染料）
イオン交換水 ６９．９
グリセリン ２０．０ デルトップ ０．１
上記表４に示した割合で配合した原料を攪拌機を用いて
撹拌混合し、マーキングペン用黒色水性インキを得た。
このインキを実施例１と同様にして水性マーキングペン
を作製した。[Table 4] Ink raw material (mass%) C.I. I. Basic Red 1 4.0 (Hodogaya Chemical Co., Ltd., red basic dye) C.I. I. Basic Blue 7 3.0 (Hodogaya Chemical Co., Ltd., blue basic dye) C.I. I. Basic Yellow 21 3.0 (Hodogaya Chemical Co., Ltd., yellow basic dye) Ion-exchanged water 69.9 Glycerin 20.0 Deltop 0.1 Using a stirrer, the raw materials blended in the ratio shown in Table 4 above were used. The mixture was stirred and mixed to obtain a black aqueous ink for marking pen.
Using this ink in the same manner as in Example 1, an aqueous marking pen was produced.
【００１９】次に示す実施例４，５は、本発明の筆記具
によって書かれた筆記線を重ね書きすることによって変
色させる変色用液が充填される変色筆記具に係るもので
ある。
（実施例４）The following Examples 4 and 5 relate to a color-changing writing instrument filled with a color-changing liquid for changing the color by overwriting writing lines written by the writing instrument of the present invention. (Example 4)
【表５】 変色用液原料 （質量％）
亜硫酸ナトリウム ２０．０
炭酸カリウム ５．０
イオン交換水 ７４．９ デルトップ ０．１
上記表５に示した割合で配合した原料を撹拌機を用いて
撹拌混合し、変色用液を得た。この変色用液を市販され
ている通常の直液式水性マーキングペン（蛍光スパーキ
ー１、ゼブラ株式会社製、商品名）と同様に、ポリプロ
ピレン製インキタンクに充填した後、バルブ組込みとと
もに先口を嵌着し、この先口にポリエステル製繊維束ペ
ン先を装着し、インキタンクを常圧にすることによって
変色筆記具を作製した。ここで「変色筆記具」とは、本
発明の水性インキを用いた筆記具で書いた筆記線の上か
ら重ね書きするすることで、その筆記線を変色させるこ
とが可能な筆記具をいう。[Table 5] Liquid raw material for discoloration (% by mass) Sodium sulfite 20.0 Potassium carbonate 5.0 Ion-exchanged water 74.9 Deltop 0.1 The raw materials blended in the proportions shown in Table 5 above are stirred and mixed using a stirrer, A color changing liquid was obtained. This color-changing liquid is filled into a polypropylene ink tank in the same manner as a commercially available direct liquid type water-based marking pen (Fluorescent Sparky 1, manufactured by Zebra Co., Ltd.), and then the valve is installed and the front end is fitted. Then, a polyester fiber bundle pen tip was attached to the tip, and the ink tank was set to normal pressure to prepare a discolored writing instrument. Here, the "discoloring writing instrument" refers to a writing instrument capable of discoloring the writing line by overwriting on the writing line written by the writing instrument using the water-based ink of the present invention.
【００２０】（実施例５）Ｃ．Ｉ．Ｂａｓｉｃ Ｒｅｄ
１（ＢＡＳＦ Ｊａｐａｎ株式会社製、赤色染料）を
０．２質量％添加して、その分イオン交換水を減じた以
外は、上述した変色筆記具の変色用液と同じ原料を用い
て、上述した変色筆記具と同様とするマーキング機能付
き変色筆記具を作製した。(Example 5) C. I. Basic Red
1 (manufactured by BASF Japan Co., Ltd., red dye) was added in an amount of 0.2% by mass, and the ion-exchanged water was reduced by that amount, and the above-described discoloration was performed using the same raw material as that for the discoloration writing instrument described above. A discolored writing instrument with a marking function similar to the writing instrument was produced.
【００２１】（試験方法）上述した実施例１〜３及び比
較例１に基づいて作製された各筆記具を用いて、乾式Ｐ
ＰＣ用紙（王子製紙株式会社製、商品名）に手書きで筆
記した後、上述した実施例４，５に基づいて作製した変
色筆記具、マーキング機能付き変色筆記具（変色用液に
マーキング機能を要するために着色剤が含まれたもの）
を夫々用いて該筆記線上に重ね書きし、変色の具合を調
べた。その結果を表６に示す。(Test Method) Using each of the writing instruments prepared based on Examples 1 to 3 and Comparative Example 1 described above, a dry type P
After handwriting on PC paper (manufactured by Oji Paper Co., Ltd., trade name), a discoloration writing instrument prepared based on Examples 4 and 5 described above, a discoloration writing instrument with a marking function (because the discoloration liquid requires a marking function). (Includes colorant)
Was overwritten on the writing line to examine the degree of discoloration. The results are shown in Table 6.
【表６】 [Table 6]
【００２２】表６の結果から明らかなとおり、本発明の
筆記具用水性インキを用いたペンで筆記した場合、それ
らの筆記線の上から変色筆記具或いはマーキング機能付
き変色筆記具で重ね書きすると、いずれにおいても変色
が認められた。一方、比較例においては、変色筆記具或
いはマーキング機能付き変色筆記具で重ね書きしても、
変色は認められず、元の筆記線の色のままであった。As is clear from the results of Table 6, when writing with a pen using the water-based ink for a writing instrument of the present invention, when overwriting with a color-changing writing instrument or a color-changing writing instrument with a marking function on those writing lines, in any case, Discoloration was also recognized. On the other hand, in the comparative example, even when overwriting with a color-changing writing instrument or a color-changing writing instrument with a marking function,
No discoloration was observed and the original writing line color was retained.
【００２３】[0023]
【発明の効果】以上、詳細に説明したように、本発明の
筆記具用水性インキは、これを充填した筆記具で筆記し
た後、その筆記線の上から変色筆記具による亜硫酸系還
元剤を含む変色用液で重ね書きすると変色するので、文
章等の特定の部分を強調させたいときにこの変色機能を
用いることができる。この際、変色用液に着色剤が混合
されていれば、その着色剤によるマーキング機能付加の
着色効果も相まって、変色用液で重ね書きされた部分
は、更に強く強調されることとなる。ところで、本発明
は、筆記具用水性インキが充填された筆記具で筆記すれ
ば、筆記線の色を変更したいときでも、筆記途中で筆記
具を別の色の筆記具に持ち替えたり、或いは筆記後に色
を変更させたい部分を何らかの方法で消したりする等の
必要がないので、手間や時間を省くことができる。更に
は、特に、筆記具用水性インキが濃い色であって、変色
後の色が比較的薄い色である場合、部分的に筆記線を変
色させた後、その変色後の色と同色の半透明シートを筆
記線に被せれば、変色部分のみが消えて見えなくなるた
め、例えばノートに筆記した文章の暗記等に利用するこ
とができ、新しい学習方法を提供することができること
になる。As described above in detail, the water-based ink for a writing instrument of the present invention is for a discoloration containing a sulfite reducing agent by a discoloration writing instrument after writing with the writing instrument filled with the ink. Since the color changes when overwritten with a liquid, this color changing function can be used when it is desired to emphasize a specific part such as a sentence. At this time, if a colorant is mixed in the color-changing liquid, the coloring effect of the marking function is added by the colorant, and the portion overwritten with the color-changing liquid is further emphasized. By the way, the present invention, when writing with a writing instrument filled with a water-based ink for a writing instrument, even when it is desired to change the color of the writing line, the writing instrument is changed to a writing instrument of a different color during writing, or the color is changed after writing. Since it is not necessary to erase the desired part by some method, it is possible to save labor and time. Furthermore, especially when the water-based ink for a writing instrument is a dark color and the color after the color change is a relatively light color, after partially changing the color of the writing line, it is semi-transparent with the same color as the color after the color change. If the sheet is covered with a writing line, only the discolored portion disappears and becomes invisible, so that the sheet can be used, for example, for memorizing sentences written in a notebook, and a new learning method can be provided.
フロントページの続き Ｆターム(参考） 2C350 GA03 GA04 NA18 NA19 4J039 BA06 BA13 BA18 BA20 BA35 BC39 BC50 BC53 BC60 BC69 BE01 BE05 BE33 CA03 CA06 EA29 GA26 GA27 Continued front page F-term (reference) 2C350 GA03 GA04 NA18 NA19 4J039 BA06 BA13 BA18 BA20 BA35 BC39 BC50 BC53 BC60 BC69 BE01 BE05 BE33 CA03 CA06 EA29 GA26 GA27
Claims (6)
染料と亜硫酸系還元剤により消色されない着色剤とを少
なくとも含むことを特徴とする筆記具用水性インキ。1. A water-based ink for a writing instrument, comprising at least a basic dye which is decolorized by a sulfite reducing agent and a colorant which is not decolorized by a sulfite reducing agent.
基性染料を０．１〜１０質量％含み、且つ前記亜硫酸系
還元剤により消色されない着色剤を０．１〜１０質量％
含むことを特徴とする請求項１記載の筆記具用水性イン
キ。2. A basic dye that is decolorized by the sulfite-based reducing agent is included in an amount of 0.1 to 10% by mass, and a colorant that is not decolorized by the sulfite-based reducing agent is included in an amount of 0.1 to 10% by mass.
The water-based ink for a writing instrument according to claim 1, which contains.
されたことを特徴とする筆記具。3. A writing instrument filled with the water-based ink according to claim 1.
筆記具と、該筆記具に充填された水性インキに含まれる
塩基性染料を消色する亜硫酸系還元剤を含む変色用液が
充填された筆記具とが、対で用いられることを特徴とす
る筆記用具。4. A writing instrument filled with the water-based ink according to claim 3, and a discoloration liquid containing a sulfite reducing agent that decolorizes a basic dye contained in the aqueous ink filled in the writing instrument. A writing instrument characterized in that the writing instrument is used in pair.
特徴とする請求項４記載の筆記用具。5. The writing instrument according to claim 4, wherein the liquid for color change does not contain a coloring agent.
とする請求項４記載の筆記用具。6. The writing instrument according to claim 4, wherein the liquid for color change contains a colorant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001270576A JP2003073602A (en) | 2001-09-06 | 2001-09-06 | Water ink for writing utensil and writing utensil filled with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001270576A JP2003073602A (en) | 2001-09-06 | 2001-09-06 | Water ink for writing utensil and writing utensil filled with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003073602A true JP2003073602A (en) | 2003-03-12 |
Family
ID=19096214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001270576A Pending JP2003073602A (en) | 2001-09-06 | 2001-09-06 | Water ink for writing utensil and writing utensil filled with the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003073602A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004151600A (en) * | 2002-10-31 | 2004-05-27 | Pilot Ink Co Ltd | Reversible thermal discoloration type writing material set |
| US6905539B2 (en) | 2003-07-15 | 2005-06-14 | Sanford L.P. | Black eradicable ink, methods of eradication of the same, eradicable ink kit, and eradicated ink complex |
| US7083665B1 (en) | 2003-10-07 | 2006-08-01 | Sanford, L.P. | Highlightable marking composition, method of highlighting the same, highlightable marking composition kit, and highlighted marking composition complex |
| JP2006256081A (en) * | 2005-03-17 | 2006-09-28 | Pilot Ink Co Ltd | Double head type writing implement |
| JP2006265520A (en) * | 2005-02-24 | 2006-10-05 | Pilot Ink Co Ltd | Water-based ink composition for direct liquid-type writing utensil and direct liquid-type writing utensil containing the same |
| JP2006289804A (en) * | 2005-04-12 | 2006-10-26 | Pilot Ink Co Ltd | Applicator for change of color, and applicator set using it |
| US7163575B2 (en) | 2004-07-15 | 2007-01-16 | Sanford, L.P. | Water-based, resin-free and solvent-free eradicable ball-pen inks |
| JP2007119676A (en) * | 2005-10-31 | 2007-05-17 | Pilot Ink Co Ltd | Allochroic ink composition, allochroic writing utensil containing the composition, and writing utensil set |
| US7229487B2 (en) | 2004-01-14 | 2007-06-12 | Sanford, L.P. | Writing instruments with eradicable inks and eradicating fluids |
| JP2007197486A (en) * | 2006-01-23 | 2007-08-09 | Pilot Ink Co Ltd | Color changeable black ink composition, color changeable writing utensils having the same built-in and a set of writing utensils |
| JP2008524426A (en) * | 2004-12-21 | 2008-07-10 | サンフォード エル．ピー． | Highlighting method with reversible highlighting mixture, highlighting kit and highlighted complex |
| JP2021187972A (en) * | 2020-06-01 | 2021-12-13 | 株式会社サクラクレパス | Aqueous marking ink composition |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004151600A (en) * | 2002-10-31 | 2004-05-27 | Pilot Ink Co Ltd | Reversible thermal discoloration type writing material set |
| JP2007521379A (en) * | 2003-07-15 | 2007-08-02 | サンフォード エル．ピー． | Erasable gel ink, erasing method thereof, erasable ink kit, and erased ink composite |
| US6905539B2 (en) | 2003-07-15 | 2005-06-14 | Sanford L.P. | Black eradicable ink, methods of eradication of the same, eradicable ink kit, and eradicated ink complex |
| US7083665B1 (en) | 2003-10-07 | 2006-08-01 | Sanford, L.P. | Highlightable marking composition, method of highlighting the same, highlightable marking composition kit, and highlighted marking composition complex |
| US7427318B2 (en) * | 2003-10-07 | 2008-09-23 | Sanford, L.P. | Highlightable and highlighted mixtures, marking instruments, and methods of using the same |
| JP2007509197A (en) * | 2003-10-07 | 2007-04-12 | サンフォード エル．ピー． | Highlightable inks containing erasable dyes, marking devices, and uses thereof |
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| US7229487B2 (en) | 2004-01-14 | 2007-06-12 | Sanford, L.P. | Writing instruments with eradicable inks and eradicating fluids |
| US7163575B2 (en) | 2004-07-15 | 2007-01-16 | Sanford, L.P. | Water-based, resin-free and solvent-free eradicable ball-pen inks |
| JP2008524426A (en) * | 2004-12-21 | 2008-07-10 | サンフォード エル．ピー． | Highlighting method with reversible highlighting mixture, highlighting kit and highlighted complex |
| JP2006265520A (en) * | 2005-02-24 | 2006-10-05 | Pilot Ink Co Ltd | Water-based ink composition for direct liquid-type writing utensil and direct liquid-type writing utensil containing the same |
| JP2006256081A (en) * | 2005-03-17 | 2006-09-28 | Pilot Ink Co Ltd | Double head type writing implement |
| JP2006289804A (en) * | 2005-04-12 | 2006-10-26 | Pilot Ink Co Ltd | Applicator for change of color, and applicator set using it |
| JP2007119676A (en) * | 2005-10-31 | 2007-05-17 | Pilot Ink Co Ltd | Allochroic ink composition, allochroic writing utensil containing the composition, and writing utensil set |
| JP2007197486A (en) * | 2006-01-23 | 2007-08-09 | Pilot Ink Co Ltd | Color changeable black ink composition, color changeable writing utensils having the same built-in and a set of writing utensils |
| JP2021187972A (en) * | 2020-06-01 | 2021-12-13 | 株式会社サクラクレパス | Aqueous marking ink composition |
| JP7466899B2 (en) | 2020-06-01 | 2024-04-15 | 株式会社サクラクレパス | Water-based marking ink composition |
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