JP3408270B2 - Image separation agent for 3D image formation - Google Patents
Image separation agent for 3D image formationInfo
- Publication number
- JP3408270B2 JP3408270B2 JP17982692A JP17982692A JP3408270B2 JP 3408270 B2 JP3408270 B2 JP 3408270B2 JP 17982692 A JP17982692 A JP 17982692A JP 17982692 A JP17982692 A JP 17982692A JP 3408270 B2 JP3408270 B2 JP 3408270B2
- Authority
- JP
- Japan
- Prior art keywords
- image
- stencil sheet
- dimensional image
- separating agent
- agent
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は立体画像形成用画像分離
剤に関し、さらに詳しくは孔版原紙を用いて立体画像を
形成するのに好適な立体画像形成用画像分離剤に関す
る。
【０００２】
【従来の技術】従来、文字、絵柄等の浮出し（立体）画
像を形成する方法としては、画像の凹型を作製し、これ
に溶融した金属や樹脂等を流し込んで固化させて取り出
す方法、素材から画像を直接削りだして浮き彫りにする
方法等が知られているが、製造工程が煩雑で多くの時間
と費用を必要とするという問題があった。本出願人は、
上記問題を解決した立体画像の形成方法、すなわち、製
版された孔版原紙の一方の面から他方の面に、流動性画
像形成材料を通過させ、孔版原紙の製版画像に対応した
形状の立体物を形成する画像形成方法を提案した（特開
平２−２７６６６９号公報）。
【０００３】上記方法においては、孔版原紙を用いて簡
単に立体画像を得ることができるが、孔版原紙を通過し
た流動性画像形成材料が硬化する際、孔版原紙に付着し
て硬化物が分離できなくなるのを防ぐため、該流動性画
像形成材料を通過させた後に、該材料の硬化条件では硬
化しないかまたは硬化が遅い材料を通過させて上記材料
を硬化させる方法を採用している。このため、上記方法
では(1) 分離した立体画像の分離面が平滑とならず、平
滑な分離面を有する立体画像が得られない、(2) 分離し
た後の孔版原紙が目詰まりして再利用できない、(3) 作
業を迅速に行わないと画像形成材料が孔版原紙に付着し
て硬化する等の問題があった。
【０００４】
【発明が解決しようとする課題】本発明の目的は、従来
技術の問題点を解決し、立体画像を孔版原紙から容易に
かつ平滑に分離することができ、しかも孔版原紙を再利
用することができる立体画像形成用画像分離剤を提供す
ることにある。
【０００５】
【課題を解決するための手段】本発明者は、上記課題に
鑑み、鋭意検討した結果、画像形成材料を孔版原紙に通
過させた後、微粒子状チキソトロピー付与剤などを含む
一定のスプレッドメーター値を有する画像分離剤を通過
させて分離層を形成することにより、硬化した立体画像
を孔版原紙から良好に分離できることを見出し、本発明
に到達した。
【０００６】すなわち、本発明は、製版した孔版原紙の
一方の面から他方の面に画像形成材料を通過させて形成
した立体画像を該孔版原紙から分離する画像分離剤であ
って、該画像分離剤は、微粒子状チキソトロピー付与剤
を含有し、そのスプレッドメータの１分値が〔３０＋
（Ｘ×０．２）〕以下（ただし、Ｘは微粒子状チキソト
ロープ付与剤の重量含有率）であることを特徴とする立
体画像形成用画像分離剤に関する。本発明における立体
画像形成用画像分離剤は、微粒子状チキソトロピー付与
剤を含有し、そのスプレッドメーター値の１分値は、ス
キージ操作性および分離層の形成のし易さ等の点から、
〔３０＋（Ｘ×０．２）〕以下、好ましくは〔２６＋
（Ｘ×０．２）〕〜１５の範囲とされる。ここで、スプ
レッドメーター値とは、ＪＩＳ Ｋ ５７０１に準じて
測定した値をいう。該画像分離剤には、微粒子状チキソ
トロピー付与剤のほか、界面活性剤、可塑剤、樹脂、溶
媒等を含有させることができる。微粒子状チキソトロピ
ー付与剤を含有させることにより、画像分離剤の未硬化
の立体画像を押し出す力が大きくなり、立体画像と孔版
原紙の間に分離層を容易にかつ均一に形成することがで
き、分離面の平滑な立体画像を得ることができる。
【０００７】微粒子状チキソトロピー付与剤としては顔
料、体質顔料、金属粉、白土、クレー等が挙げられ、具
体的にはＣａＣＯ3 、Ａｌ（ＯＨ)3、ＣａＨＰＯ4 、Ｃ
ａＨＰＯＨ・２Ｈ2 Ｏ、Ｃa2Ｐ2 Ｏ7 、（ＮａＰＯ3)x
、ＳｉＯ2 ・ｎＨ2 Ｏ、ＭｇＣＯ3 等を１種または２
種以上混合して用いることができる。その含有量は２０
〜７０重量％の範囲が好ましく、より好ましくは３０〜
６０重量％の範囲である。微粒子の粒径は孔版原紙の支
持体を通過できる大きさであれば特に制限はないが、１
〜３０μｍの範囲とするのが好ましい。また画像分離剤
は、立体画像に付着した分離剤の除去および孔版原紙の
再利用を容易にする点から、水溶性タイプの画像分離剤
とするのが好ましい。
【０００８】画像分離剤により形成した分離層は、製版
画像に対応した立体的な形状を有する流動性画像形成材
料が硬化する間はこれを孔版原紙に保持し、硬化した後
は容易に立体画像を孔版原紙から分離する。分離した立
体画像および孔版原紙に付着する分離層を水洗等により
容易に除去することができ、また分離層が除去された孔
版原紙は再利用することができる。
【０００９】本発明に用いられる孔版原紙は、感熱フィ
ルムと多孔性支持体を張り合わせて得られるものであ
り、該孔版原紙の製版は、例えばサーマルヘッドにより
感熱フィルムを穿孔するか、または感熱フィルムと原稿
を密着させて光照射して原稿の画像部を穿孔することに
より行うことができる。
【００１０】本発明に用いられる流動性画像形成材料に
は、製版された孔版原紙の孔を通過しうる流動性と、孔
から押し出された後に所定の形状を安定に保持しうる形
状保持性が必要であり、このような条件を満足する材料
として、力が加えられた時のみ流動性を有するチキソト
ロピー性を持つ例えばシリコーンゴム等の樹脂質材料を
挙げることができる。該シリコーンゴムが湿気硬化型の
場合には形成された画像は比較的短時間に空気中の水分
と反応して硬化する。またシリコーンゴムには加熱硬化
樹脂、光硬化樹脂、紫外線硬化樹脂等を用いることがで
きるが、この場合には画像形成材料を押し出した後に、
加熱または光、紫外線等を照射する必要がある。流動性
画像形成材料の硬さの指標となるスプレッドメーターの
１分値は通常１５〜３５の範囲である。なお、本発明で
いう硬化とは弾性がなくなることを意味するのではな
く、外力により弾性変形しても塑性変形しなくなること
を意味する。
【００１１】
【実施例】以下、本発明を実施例により詳しく説明する
が、下記例中の部は重量部を意味する。
実施例１〜２０および比較例１〜１０
表１または表２に示す配合割合（単位は重量部）で、ま
ず水、グリセリンおよびカルボキシメチルセルロース
（ＣＭＣ）を混合して予備液とし、次いでこの予備液に
ＣａＣＯ3 および界面活性剤（ラウリル硫酸ナトリウ
ム）を加えて粗ペーストとした後、３本ロールミルで混
合し、脱泡してそれぞれの画像分離剤を製造した。
【００１２】
【表１】【００１３】
【表２】【００１４】次に孔版原紙を製版装置（プリントゴッコ
（登録商標）、理想科学工業社製）により製版して画像
を形成し、該孔版原紙を空間に水平に保持してシリコー
ンゴム質の流動性画像形成材料を、スキージ操作により
孔版原紙の上面から下面に通過させて孔版原紙に付着し
た立体画像を形成した。次いで上記で製造した画像分離
剤をそれぞれ孔版原紙上面から下面にスキージ操作によ
り押出して分離層を形成し、この状態で流動性画像形成
材料からなる立体画像を硬化させて立体画像を分離し
た。このときの分離層を形成する際のスキージ操作回
数、操作感、押出し力、分離した立体画像の分離面の状
態および室温２３℃、湿度５０％の恒温室で測定したス
プレッドメータの１分値（以下「ＳＰ値」という）を観
察または測定して結果を表３または４に示した。なお、
使用した流動性画像形成材料のＳＰ値は２６であった。
【００１５】
【表３】【００１６】
【表４】【００１７】＊１：画像形成材料とマスターを分離させ
るのに必要な操作回数。
＊２：×は５０回操作しても画像形成材料とマスターを
分離できなかった。
＊３：分離面の状態が平滑である場合は○、凹凸がある
場合は×で示し、分離不可は−で示した。
図１は、表３〜４の結果に基づいたＸ値（チキソトロピ
ー付与剤の含有量）とＳＰ値の総合評価との関係を示す
図である。すなわち、縦軸をＳＰ値、横軸をＸ値として
表３、表４の各実施例および比較例の総合評価（○、
△、×）をプロットした。図１から、Ｘ値０の総合評価
△とＸ値５０の総合評価△を結んだ直線Ｌ1 は、各Ｘ値
における総合評価×と△の臨界を現し、またＸ値０の総
合評価○とＸ値７０の総合評価○を結んだ直線Ｌ2 は、
各Ｘ値における総合評価○の臨界を現していることがわ
かった。これらの直線Ｌ1 とＬ2 は実質的に平行であっ
た。そこで、縦軸をＹ、横軸をＸとすると、直線Ｌ1 は
近似的にＹ＝３０＋（Ｘ×０．２）の一般式で現され、
直線Ｌ2 は近似的にＹ＝２６＋（Ｘ×０．２）の一般式
で現すことができた。本発明の画像分離剤を用いた実施
例では、ＳＰ値が〔３０＋（Ｘ×０．２）〕以下である
ため、少ないスキージ操作回数で分離層を形成すること
ができ、またスキージ操作の際に適度な抵抗が生じて良
好な操作感が得られ、さらに分離面の平滑な立体画像が
得られた。
【００１８】
【発明の効果】本発明の立体画像形成用画像分離剤によ
れば、微粒子状チキソトロピー付与剤を含み、かつ特定
のＳＰ値を有するため、立体画像を容易かつ均一に分離
することができ、平滑な分離面を有する立体画像を得る
ことができる。また画像分離剤は水洗等により容易に除
去できるため、使用済孔版原紙を再利用することができ
る。さらに画像分離剤に特殊機能を持つ微粒子を含有さ
せることにより、立体画像の分離面に微粒子の持つ特殊
機能を持たせることが可能である。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image separating agent for forming a three-dimensional image, and more particularly to a three-dimensional image forming agent suitable for forming a three-dimensional image using stencil paper. It relates to an image separating agent. 2. Description of the Related Art Conventionally, as a method of forming a raised (three-dimensional) image of a character, a picture, or the like, a concave shape of an image is prepared, and molten metal or resin is poured into the concave shape and solidified. There are known a method of taking out the image, a method of directly shaving an image from a material and embossing the image, and the like, but there is a problem that the manufacturing process is complicated and requires much time and cost. The applicant has
A method of forming a three-dimensional image that solves the above problem, that is, passing a fluid image forming material from one side of the stencil sheet to the other side, and forming a three-dimensional object having a shape corresponding to the stencil image of the stencil sheet. An image forming method for forming an image has been proposed (JP-A-2-276669). In the above method, a three-dimensional image can be easily obtained by using a stencil sheet. However, when the fluid image forming material that has passed through the stencil sheet is cured, it can adhere to the stencil sheet and separate the cured product. In order to prevent the material from disappearing, a method is used in which the material is cured by passing a material which does not cure or which cures slowly under the curing conditions of the material after passing the fluid image forming material. Therefore, according to the above method, (1) the separation surface of the separated three-dimensional image is not smooth, and a three-dimensional image having a smooth separation surface cannot be obtained. (2) The stencil sheet after separation is clogged and (3) If the operation is not performed quickly, there are problems such as the image forming material adhering to the stencil sheet and hardening. SUMMARY OF THE INVENTION [0004] An object of the present invention is to solve the problems of the prior art, and to easily and smoothly separate a stereoscopic image from a stencil sheet while reusing the stencil sheet. It is an object of the present invention to provide an image separating agent for forming a three-dimensional image that can be used. Means for Solving the Problems In view of the above problems, the present inventor has conducted intensive studies, and as a result, after passing an image forming material through a stencil sheet, a predetermined spread containing a particulate thixotropy- imparting agent or the like has been obtained. The present inventors have found that a cured three-dimensional image can be well separated from a stencil sheet by passing an image separating agent having a meter value to form a separation layer, and have reached the present invention. That is, the present invention relates to an image separating agent for separating a three-dimensional image formed by passing an image forming material from one surface of a stencil sheet made from one side to the other surface from the stencil sheet. The agent is a particulate thixotropic agent
Containing, 1 minute value of the spread meter of that is [30+
(X × 0.2)] (where X is the weight content of the particulate thixotrope-imparting agent). The image separating agent for forming a three-dimensional image in the present invention has a fine-grained thixotropy.
Agent containing, 1 minute value spread meter value of that, from the viewpoint of forming easiness of the squeegee operability and separation layer,
[30+ (X × 0.2)] or less, preferably [26+
(X × 0.2)] to 15. Here, the spread meter value refers to a value measured according to JIS K 5701. The image separating agent may contain a surfactant, a plasticizer, a resin, a solvent, and the like, in addition to the particulate thixotropic agent. By including the particulate thixotropy-imparting agent, the force of extruding the uncured three-dimensional image of the image separating agent is increased, and a separation layer can be easily and uniformly formed between the three-dimensional image and the stencil sheet. A three-dimensional image with a smooth surface can be obtained. Examples of the particulate thixotropy- imparting agent include pigments, extenders, metal powders, clay, clay and the like. Specifically, CaCO 3 , Al (OH) 3 , CaHPO 4 , C
aHPOH · 2H 2 O, Ca 2 P 2 O 7, (NaPO 3) x
, SiO 2 .nH 2 O, MgCO 3, etc.
A mixture of more than one species can be used. Its content is 20
The range is preferably from 70 to 70% by weight, more preferably from 30 to 70% by weight.
It is in the range of 60% by weight. The particle size of the fine particles is not particularly limited as long as it can pass through the support of the stencil paper.
It is preferably in the range of 30 to 30 μm. The image separating agent is preferably a water-soluble image separating agent from the viewpoint of facilitating removal of the separating agent attached to the three-dimensional image and reuse of the stencil sheet. The separation layer formed by the image separating agent holds the fluid image forming material having a three-dimensional shape corresponding to the plate-making image on the stencil paper while the material is hardened, and after the hardening, easily forms the three-dimensional image. Is separated from the stencil sheet. The separated three-dimensional image and the separation layer attached to the stencil sheet can be easily removed by washing with water or the like, and the stencil sheet from which the separation layer has been removed can be reused. The stencil sheet used in the present invention is obtained by laminating a heat-sensitive film and a porous support. The stencil sheet is formed by, for example, perforating the heat-sensitive film with a thermal head, or forming a stencil sheet with a heat-sensitive film. This can be performed by bringing the document into close contact and irradiating light to perforate the image portion of the document. The fluid image-forming material used in the present invention has fluidity that can pass through the holes of the stencil sheet that has been made and shape retention that can stably retain a predetermined shape after being extruded from the holes. As a material that satisfies such conditions and is necessary, a resinous material such as silicone rubber having a thixotropic property having fluidity only when a force is applied can be exemplified. When the silicone rubber is of a moisture-curable type, the formed image reacts with moisture in the air in a relatively short time and cures. In addition, a heat-curable resin, a photo-curable resin, an ultraviolet-curable resin, or the like can be used for the silicone rubber. In this case, after extruding the image forming material,
It is necessary to heat or irradiate light, ultraviolet rays, or the like. The 1-minute value of the spread meter as an index of the hardness of the flowable image forming material is usually in the range of 15 to 35. The hardening in the present invention does not mean that elasticity is lost, but does not mean that even if it is elastically deformed by an external force, it is not plastically deformed. The present invention will be described in more detail with reference to the following Examples, in which parts in the following examples mean parts by weight. Examples 1 to 20 and Comparative Examples 1 to 10 First, water, glycerin and carboxymethylcellulose (CMC) were mixed at a mixing ratio (unit: parts by weight) shown in Table 1 or Table 2 to prepare a preliminary liquid, and then the preliminary liquid Was added to CaCO 3 and a surfactant (sodium lauryl sulfate) to form a coarse paste, followed by mixing with a three-roll mill and defoaming to produce respective image separating agents. [Table 1] [Table 2] Next, the stencil sheet is prepressed by a stencil making machine (Print Gocco (registered trademark), manufactured by Riso Kagaku Kogyo KK) to form an image, and the stencil sheet is held horizontally in a space to form a silicone rubber fluid image. The forming material was passed from the upper surface to the lower surface of the stencil sheet by a squeegee operation to form a three-dimensional image attached to the stencil sheet. Next, each of the image separating agents produced above was extruded from the upper surface to the lower surface of the stencil paper by a squeegee operation to form a separation layer, and in this state, the three-dimensional image formed of the fluid image forming material was cured to separate the three-dimensional image. At this time, the number of squeegee operations, the operational feeling, the pushing force, the state of the separation surface of the separated three-dimensional image, and the one-minute value of the spread meter measured in a constant temperature room at a room temperature of 23 ° C. and a humidity of 50% ( (Hereinafter referred to as “SP value”) was observed or measured, and the results are shown in Table 3 or 4. In addition,
The SP value of the flowable image forming material used was 26. [Table 3] [Table 4] * 1: The number of operations required to separate the image forming material from the master. * 2: × was not able to separate the image forming material and the master even after operating 50 times. * 3: When the state of the separation surface is smooth, it is indicated by ○, when there is unevenness, it is indicated by ×, and when separation is impossible, it is indicated by-. FIG. 1 shows an X value ( thixotropic) based on the results of Tables 3 and 4.
It is a diagram showing the relationship between the overall evaluation of the content) and the SP value of over imparting agent. In other words, the overall evaluation of each of Examples and Comparative Examples in Tables 3 and 4 (O,
Δ, ×) were plotted. From FIG. 1, a straight line L 1 connecting the comprehensive evaluation ０ of the X value 0 and the comprehensive evaluation △ of the X value 50 indicates the criticality of the comprehensive evaluation X and △ at each X value, A straight line L 2 connecting the comprehensive evaluations of X value 70 is
It was found that the total evaluation at each X value was critical. These lines L 1 and L 2 were substantially parallel. Therefore, assuming that the vertical axis is Y and the horizontal axis is X, the straight line L 1 is approximately expressed by a general formula of Y = 30 + (X × 0.2),
The straight line L 2 could be approximately expressed by the general formula of Y = 26 + (X × 0.2). In the embodiment using the image separating agent of the present invention, since the SP value is not more than [30+ (X × 0.2)], the separation layer can be formed with a small number of squeegee operations, , A good feeling of operation was obtained, and a three-dimensional image having a smooth separation surface was obtained. According to the image separating agent for forming a three-dimensional image of the present invention, it contains a particulate thixotropy-imparting agent.
, The stereoscopic image can be easily and uniformly separated, and a stereoscopic image having a smooth separation surface can be obtained. Further, since the image separating agent can be easily removed by washing with water or the like, the used stencil sheet can be reused. Furthermore, by including fine particles having a special function in the image separating agent, it is possible to impart the special function of the fine particles to the separation surface of the stereoscopic image.
【図面の簡単な説明】
【図１】画像分離剤のＸ値とＳＰ値の総合評価の関係を
示す図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing the relationship between the overall evaluation of the X value and the SP value of an image separating agent.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B41M 3/06 B41M 1/12 B41L 13/18 B41F 15/10 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 7 , DB name) B41M 3/06 B41M 1/12 B41L 13/18 B41F 15/10
Claims (1)
面に画像形成材料を通過させて形成した立体画像を該孔
版原紙から分離する画像分離剤であって、該画像分離剤
は、微粒子状チキソトロピー付与剤を含有し、そのスプ
レッドメータの１分値が〔３０＋（Ｘ×０．２）〕以下
（ただし、Ｘは微粒子状チキソトロープ付与剤の重量含
有率）であることを特徴とする立体画像形成用画像分離
剤。(57) [Claims 1] An image separating agent which separates a three-dimensional image formed by passing an image forming material from one surface of a stencil sheet made from one side to the other surface from the stencil sheet. The image separating agent
That contains a particulate thixotropic agent, 1 minute value spread meter of that is [30+ (X × 0.2)] or less (however, X is the weight content of the particulate thixotropic imparting agents) is Characteristic image separating agent for three-dimensional image formation.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17982692A JP3408270B2 (en) | 1992-07-07 | 1992-07-07 | Image separation agent for 3D image formation |
| US08/070,545 US5404807A (en) | 1992-06-09 | 1993-06-02 | Three dimensional image formation process |
| DE69313928T DE69313928T2 (en) | 1992-06-09 | 1993-06-04 | Process for creating a three-dimensional image and release agent for the image |
| EP93304358A EP0574196B1 (en) | 1992-06-09 | 1993-06-04 | Three-dimensional image formation process and image separating agent |
| AU40108/93A AU663782B2 (en) | 1992-06-09 | 1993-06-08 | Three-dimensional image formation process and image separating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17982692A JP3408270B2 (en) | 1992-07-07 | 1992-07-07 | Image separation agent for 3D image formation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0624120A JPH0624120A (en) | 1994-02-01 |
| JP3408270B2 true JP3408270B2 (en) | 2003-05-19 |
Family
ID=16072572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17982692A Expired - Fee Related JP3408270B2 (en) | 1992-06-09 | 1992-07-07 | Image separation agent for 3D image formation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3408270B2 (en) |
-
1992
- 1992-07-07 JP JP17982692A patent/JP3408270B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0624120A (en) | 1994-02-01 |
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