JPS62169684A - Thermal transfer recording method - Google Patents
Thermal transfer recording methodInfo
- Publication number
- JPS62169684A JPS62169684A JP999186A JP999186A JPS62169684A JP S62169684 A JPS62169684 A JP S62169684A JP 999186 A JP999186 A JP 999186A JP 999186 A JP999186 A JP 999186A JP S62169684 A JPS62169684 A JP S62169684A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- heat
- recording
- recording head
- recording medium
- 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
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- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 208000010727 head pressing Diseases 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
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- 239000005011 phenolic resin Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
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- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/382—Contact thermal transfer or sublimation processes
- B41M5/38207—Contact thermal transfer or sublimation processes characterised by aspects not provided for in groups B41M5/385 - B41M5/395
- B41M5/38221—Apparatus features
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electronic Switches (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は感熱転写記録に際し、表面平滑性の低い記録媒
体に対しても良画質の記録をすることが出来る感熱転写
記録方法に関するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a thermal transfer recording method that is capable of recording high quality images even on recording media with low surface smoothness during thermal transfer recording. .
〈従来の技術〉
感熱転写記録方法は装置が小型軽量にして騒音が少ない
等の一般的特徴の他に、普通紙に記録が可能であること
から近年広く使用されている。<Prior Art> The thermal transfer recording method has been widely used in recent years because it has general features such as a small and lightweight device and low noise, and also because it allows recording on plain paper.
従来一般に使用されている感熱転写記録方法はシート状
の支持体上に、熱溶融性バインダー中に着色剤を分散さ
せてなる熱転写性インクを層状に塗布した感熱転写材を
用い、この感熱転写材の前記インク層が記録媒体に接す
るように感熱転写材と記録媒体とを重畳し、該記録媒体
の背面をプラテンローラで支承すると共に、前記感熱転
写材の支持体側から記録ヘッドによってパルス状の熱を
供給し、溶融したインクを記録媒体に転写することによ
り、記録媒体上に熱供給に応じた転写インク像を形成す
るものである。The heat-sensitive transfer recording method commonly used in the past uses a heat-sensitive transfer material coated with a layer of heat-transferable ink consisting of a heat-melting binder and a colorant dispersed on a sheet-like support. The thermal transfer material and the recording medium are overlapped so that the ink layer of the recording medium is in contact with the recording medium, the back side of the recording medium is supported by a platen roller, and pulsed heat is applied from the support side of the thermal transfer material by the recording head. By supplying the ink and transferring the melted ink to the recording medium, a transferred ink image is formed on the recording medium according to the heat supply.
〈発明が解決しようとする問題点〉
上記の如く感熱転写記録方法は加熱されて溶融したイン
クの粘着力によって転写するものである為に、転写性能
たる画像品質が記録媒体の表面平滑性に大きく左右され
、平滑性の高い記録媒体には良好な転写が行われるが、
平滑性の低い記録媒体の場合は著しく画像品質が低下す
る。従って良好な画像記録をする為には表面平滑性の高
い記録媒体を使用しなければならない。しかし、最も典
型的な記録媒体である普通紙にあっては平滑性が高い紙
は特殊なものであり、通常は紙の繊維が絡み合って微小
の凹凸を形成している。従って表面凹凸が大きい紙に印
字する場合は、記録時に溶融したインクが紙の繊維の中
まで浸透出来ず、表面の凸部或いはその近傍に付着する
のみ−であり、転写画像のエツジ部がシャープでなかっ
たり、像の一部が欠けたりして画像品質が低下するもの
であった。<Problems to be Solved by the Invention> As mentioned above, in the thermal transfer recording method, transfer is performed using the adhesive force of heated and melted ink, so the image quality, which is the transfer performance, greatly depends on the surface smoothness of the recording medium. Good transfer is performed on recording media with high smoothness.
In the case of a recording medium with low smoothness, the image quality deteriorates significantly. Therefore, in order to record good images, it is necessary to use a recording medium with high surface smoothness. However, plain paper, which is the most typical recording medium, is a special type of paper with high smoothness, and paper fibers are usually entangled to form minute irregularities. Therefore, when printing on paper with a large surface unevenness, the ink melted during recording cannot penetrate into the fibers of the paper and only adheres to the protrusions on the surface or the vicinity thereof, resulting in sharp edges of the transferred image. In some cases, the quality of the image deteriorates because the image is not visible or a part of the image is missing.
そこで上記表面平滑性の低い記録媒体に印字をする場合
、従来は溶融粘度が小さい熱溶融性バインダーを使用し
たり、熱転写性インク層の層厚を厚くシたり、或いは記
録ヘッドによる押圧を強くして感熱転写材のインク層と
記録媒体との密着性を強くすることによって、溶融イン
クを紙等の記録媒体の微細凹部まで忠実に付着ないし浸
透させるようにしていた。Therefore, when printing on recording media with low surface smoothness, conventional methods have been to use a hot-melt binder with a low melt viscosity, increase the thickness of the thermal transfer ink layer, or use stronger pressure from the recording head. By strengthening the adhesion between the ink layer of the thermal transfer material and the recording medium, the molten ink was able to faithfully adhere to or permeate into the minute recesses of the recording medium such as paper.
しかしながら、上記の如くしても画像品質を高めるまで
には至らず、溶融粘度の小さいバインダーを使用した場
合は、インク層が比較的低温に於いても粘着性を帯びる
ので保存性が低下すると共に、記録媒体の非画像部に於
いて汚損が生ずる等の問題が生じ、また熱転写性インク
層の層厚を厚くした場合にはにじみが大きくなり、更に
記録ヘッドからの熱供給量も大きくしなければならない
と共に記録速度も低下する等の問題が生じ、また記録ヘ
ッドの押圧力を強（した場合には非転写部分のインクも
記録媒体に転写されてしまう為に、地汚れが生じてしま
う等の問題があった。However, even with the above methods, image quality cannot be improved, and when a binder with a low melt viscosity is used, the ink layer becomes sticky even at relatively low temperatures, resulting in decreased storage stability and , problems such as staining occur in the non-image areas of the recording medium, and when the thickness of the thermal transfer ink layer is increased, bleeding increases, and the amount of heat supplied from the recording head must also be increased. In addition, if the pressing force of the recording head is increased, the ink in the non-transferred areas will also be transferred to the recording medium, resulting in background smudges, etc. There was a problem.
本発明は上記従来の問題点を解決し、諸々の熱転写性能
を維持しつつ、表面平滑性の高い記録媒体に対しては勿
論のこと、表面平滑性の低い記録媒体に対しても濃度が
高く、且つインク切れのよい高品質の記録が可能な感熱
転写記録方法を提供せんとするものである。The present invention solves the above-mentioned conventional problems, maintains various thermal transfer performances, and provides high density not only for recording media with high surface smoothness but also for recording media with low surface smoothness. It is an object of the present invention to provide a thermal transfer recording method that is capable of performing high-quality recording with good ink drainage.
本発明は上記従来の方法では記録媒体の表面平滑性の低
い場合に、熱溶融性バインダーとして溶融温度に於いて
急激に粘度が低下するワックスを主成分としたものが使
用され、その結果溶融したインクが記録媒体に浸透して
しまう為に、画像品質が低下していたことに鑑み、種々
の研究を行った結果、熱溶融性インク等として明確な熔
融温度をもたないと共に、加熱された場合に半溶融状態
となって溶融粘度が急激に低下しなげ物質を主成分とし
て用いることによって、表面平滑性が低い記録媒体に対
してもインクの浸透が少なく、凹部を覆うことが可能で
あり、更に転写時に於いて記録ヘッドによる押圧力を大
きくしても地汚れが発生し難いことを見い出して完成さ
せるに至ったものである。In the present invention, when the surface smoothness of the recording medium is low in the above conventional method, a wax-based binder whose viscosity rapidly decreases at the melting temperature is used as a heat-melting binder, and as a result, the molten In view of the fact that image quality deteriorated due to the ink penetrating into the recording medium, various studies were conducted, and as a result, as a heat-melting ink, etc., it did not have a clear melting temperature and could be heated. By using a substance as the main component, which does not become semi-molten and the melt viscosity rapidly decreases, the ink penetrates into recording media with low surface smoothness, making it possible to cover the recesses. Furthermore, they discovered that background smearing is less likely to occur even if the pressing force of the recording head is increased during transfer, and this has been completed.
〈問題点を解決するための手段〉
上記従来の問題点を解決する零発−の手段は、加熱によ
って半溶融状態となるインク層を支持体上に有する感熱
転写材を使用し、前記インク層を記録媒体に密着し、且
つ記録ヘッドを前記支持体側に圧接すると共にパルス状
の熱を印加してインクを記録媒体に転写させるに際し、
前記記録ヘッドによる押圧力を３００ｇｆ／ｃｍ〜２０
００ｇｆ／ｃｍに設定することを特徴としてなるもので
ある。<Means for Solving the Problems> An original method for solving the above-mentioned conventional problems uses a thermal transfer material having an ink layer on a support that becomes semi-molten when heated, and is brought into close contact with the recording medium, the recording head is pressed against the support side, and pulsed heat is applied to transfer the ink to the recording medium,
The pressing force by the recording head is 300 gf/cm to 20 gf/cm.
This feature is set to 00 gf/cm.
〈作用〉
上記手段によれば、記録ヘッドによって記録媒体と密着
したインクを加熱すると、該インクは半溶融状態となっ
て粘度が急激に低下せず、その結果表面平滑性の低い記
録媒体にあっては、表面凹部が半溶融インクによって覆
われると共に、該半溶融インクをある程度大きな圧力で
記録媒体に圧接することによって加熱された部分のイン
クのみが確実に記録媒体に転写されるものである。<Operation> According to the above means, when the ink that is in close contact with the recording medium is heated by the recording head, the ink becomes a semi-molten state and the viscosity does not decrease rapidly, and as a result, the ink is heated on the recording medium with low surface smoothness. In this method, the surface recesses are covered with semi-molten ink, and the semi-molten ink is brought into contact with the recording medium under a relatively large pressure, thereby ensuring that only the ink in the heated portions is transferred to the recording medium.
〈実施例〉 次に上記手段を適用した本発明の一実施例を説明する。<Example> Next, an embodiment of the present invention to which the above means is applied will be described.
第１図は感熱転写材の厚さ方向断面を含む模式断面図で
ある。１は感熱転写材であって支持体２上に熱転写性イ
ンク３を層状に塗布形成して構成されている。このイン
ク３は加熱されると半溶融状態となって急激に粘度が低
下しない性質を有するものであり、例えば２種類以上の
ドメインを形成し、そのうちの少なくとも１種類のドメ
インが数平均分子量１３００以上の酸化ポリエチレンを
成分とした熱熔融性バインダーに着色剤を混入して構成
したものである。尚、ここでｒ半溶融状態」とは固体が
熱によって溶けて液体になる直前状態をいい、また「ド
メイン」とは不均一系に於いて、組成、物性等が他と識
別し得る領域をいうものである。FIG. 1 is a schematic cross-sectional view including a cross-section in the thickness direction of a thermal transfer material. Reference numeral 1 denotes a heat-sensitive transfer material, which is constructed by coating a support 2 with a heat-transferable ink 3 in a layered manner. When heated, this ink 3 becomes a semi-molten state and has the property that its viscosity does not decrease rapidly.For example, it forms two or more types of domains, at least one of which has a number average molecular weight of 1300 or more. It is made by mixing a coloring agent into a heat-melting binder containing polyethylene oxide as a component. Note that the term "semi-molten state" here refers to the state in which a solid is about to melt due to heat and becomes a liquid, and the term "domain" refers to a region in a heterogeneous system whose composition, physical properties, etc. can be distinguished from others. That's what I mean.
前記構成の感熱転写材ｌのインク３を背面がプラテン４
によって支承された記録媒体５に密着し、支持体２側か
ら画情報に応じて発熱する発熱部６ａを一列状に有する
記録ヘッド６によってパルス状の熱を印加し、且つこの
熱印加の際に記録ヘッド６に於ける発熱部６ａを３００
ｇｆ／ｃｍ〜２０００ｇｆ／ｃｍの押圧力Ｐ、Ｉで前記
支持体２を押圧する如く構成している。The ink 3 of the thermal transfer material 1 having the above structure is applied to the platen 4 whose back surface is
Pulsed heat is applied by a recording head 6 which is in close contact with the recording medium 5 supported by the support body 2 and has a line of heat generating parts 6a that generate heat according to image information from the support 2 side. The heat generating part 6a in the recording head 6 is
The support body 2 is configured to be pressed with pressing forces P and I of gf/cm to 2000 gf/cm.
尚、記録ヘッド６は第２図に示す如く元部が軸６ｂに対
して回動可能に取り付けられると共に、戻しバネ６ｃに
よってプラテン４から離れる方向に常に付勢され、且つ
記録ヘッド６の背部にはヘッドカムモーター６ｄによっ
て回転するカム６ｅが当接する如く取り付けられ、該カ
ム６ｅの回転によってヘッド先端の発熱部６ａが感熱転
写材１に対して前記押圧力Ｐ１をもって当接し、キャリ
ッジリターン時及びスキップする時には離隔する如く構
成され、前記カム６ｅの回転量を変化させることによっ
て前記押圧力Ｐ、を変化させることが出来るようになっ
ている。As shown in FIG. 2, the base of the recording head 6 is rotatably attached to a shaft 6b, and is constantly urged in a direction away from the platen 4 by a return spring 6c. is attached so as to be in contact with a cam 6e rotated by a head cam motor 6d, and due to the rotation of the cam 6e, the heat generating portion 6a at the tip of the head comes into contact with the thermal transfer material 1 with the pressing force P1, and when the carriage returns and skips. When the cam 6e is rotated, the cam 6e is moved away from the cam 6e, and the pressing force P can be changed by changing the amount of rotation of the cam 6e.
前記構成によれば、画像パターン状に加熱され、半溶融
状態となったインク３は記録ヘッド６の大きな押圧力に
よって、表面平滑性の低い記録媒体５に対しても完全に
接着すると共に、インク切れがよい鮮明な画像を転写す
ることが出来るものである。According to the above configuration, the ink 3 heated in an image pattern and in a semi-molten state is completely adhered to the recording medium 5 having a low surface smoothness due to the large pressing force of the recording head 6, and the ink 3 is heated in an image pattern and becomes semi-molten. It is capable of transferring sharp and clear images.
次に上記の如く構成したことによって鮮明画像が転写さ
れる理由を説明する。Next, the reason why a clear image is transferred with the above configuration will be explained.
上記構成の例で説明すると、感熱転写材１のインク３を
構成する熱溶融性バインダーが２種類以上のドメインを
形成すると、インク層内の凝集力が均−系に比べて大幅
に小さくなる。またこの２種類以上のドメインは熱印加
時にパターン加熱部に於いて均質化が進行し、凝集力の
高い記録潜像を形成すると共に、記録媒体５への記録潜
像の接着力として作用する粘着力を生ずる。更に熱溶融
性バインダーが２種類以上のドメインにより構成される
と、例えば加熱された場合の接着力や凝集力といった機
能ないし物性が異なるドメインが存在する為に、均−系
の場合より各々の機能ないし物性が発現され易く、その
結果、熱印加の際に熱印加部と非熱印加部とでインク３
の凝集力に大きな差異が生ずるものである。To explain using an example of the above configuration, when the heat-melting binder constituting the ink 3 of the thermal transfer material 1 forms two or more types of domains, the cohesive force within the ink layer becomes significantly smaller than that of a homogeneous system. In addition, these two or more types of domains become homogenized in the pattern heating part when heat is applied, forming a recorded latent image with high cohesive force, and an adhesive that acts as an adhesive force of the recorded latent image to the recording medium 5. Generate power. Furthermore, when a hot-melt binder is composed of two or more types of domains, there are domains that have different functions or physical properties, such as adhesive strength or cohesive force when heated, so each function is more difficult to perform than in the case of a homogeneous binder. or physical properties are easily expressed, and as a result, when heat is applied, the ink 3
This causes a large difference in the cohesive force of the two.
更に少なくとも１種類のドメインが数平均分子量１３０
０以上、より好ましくは２０００〜１ｏｏｏｏの酸化ポ
リエチレンを成分として含む為、前記熱印加部と非熱印
加部とでの凝集力に更に大きな差異が生ずる。Furthermore, at least one type of domain has a number average molecular weight of 130.
Since it contains polyethylene oxide of 0 or more, more preferably 2000 to 1000, as a component, a larger difference occurs in the cohesive force between the heat-applied part and the non-heat-applied part.
尚、酸化ポリエチレンの数平均分子量が１３００以下に
なると、熱印加後形成される潜像の皮膜性が低くなり、
転写記録像に欠けが出るようになり、また酸化ポリエチ
レンの含有率が３０％未満であると、熱印加後の熱印加
部と非熱印加部とのインク切れが悪くなるので適当でな
い。In addition, when the number average molecular weight of polyethylene oxide is less than 1300, the film properties of the latent image formed after heat application will be low,
If the content of polyethylene oxide is less than 30%, it is not suitable because the ink between the heat-applied area and the non-heat-applied area after heat application will be difficult to drain.
以上の如く、前記感熱転写材１の不均質である非熱印加
部のインク３は熱印加部に比べて粘着性が非常に低くな
っており、更に凝集力や皮膜性といった物性に大きな差
異がある為に、非加熱部のインク３と記録媒体５との摩
擦による地汚れが記録媒体５上に生じ難くなる。この為
に、記録ヘッド６による押圧力を大きくすることが可能
となり、その結果、表面平滑性の低い記録媒体５に対し
ても熱印加部の半溶融状態となったインク３を確実に接
着させることが出来、且つインク切れのよいエツジ部が
鮮明な転写画像を得ることが出来るものである。As described above, the ink 3 in the non-heat-applied part of the thermal transfer material 1, which is non-uniform, has extremely low tackiness compared to the heat-applied part, and there is also a large difference in physical properties such as cohesive force and film properties. Therefore, background stains due to friction between the ink 3 in the non-heated portion and the recording medium 5 are less likely to occur on the recording medium 5. For this reason, it is possible to increase the pressing force by the recording head 6, and as a result, the semi-molten ink 3 at the heat application section can be reliably adhered to the recording medium 5 with low surface smoothness. In addition, it is possible to obtain a transferred image with clear edges that are well drained of ink.
ここで前記感熱転写材１を使用し、ベック平滑度５秒の
記録媒体５に感熱転写記録を行った場合、記録ヘッド６
の押圧力Ｐ、に対する転写効率と、地汚れ発生率の変化
をグラフに示すと第３図の如くであった。尚、「転写効
率」とは第４図（Ａ）に示されるように記録ヘッド６の
全ドツト通電による正方形のベタのパターンの記録を行
ったときの転写されるべき面積Ｓ１に対する実際に転写
される面積Ｓ、の比で表わされ、また「地汚れ発生率」
とは第４図（Ｂ）に示されるように記録ヘッド６に通電
せず、感熱転写材１を介して記録媒体５上で記録ヘッド
６を走行させたときの前記第４図（Ａ）の面積Ｓ、と同
面積に対する摩擦によって発生した地汚れの部分Ｓ３の
比で表される。Here, when the thermal transfer material 1 is used and thermal transfer recording is performed on the recording medium 5 with a Beck smoothness of 5 seconds, the recording head 6
FIG. 3 shows a graph showing the change in transfer efficiency and background smudge occurrence rate with respect to the pressing force P. Incidentally, "transfer efficiency" refers to the actual transfer efficiency with respect to the area S1 to be transferred when a solid square pattern is printed by energizing all dots of the recording head 6, as shown in FIG. 4(A). It is expressed as the ratio of the area S, which is
4(A) when the recording head 6 is run on the recording medium 5 via the thermal transfer material 1 without energizing the recording head 6 as shown in FIG. 4(B). It is expressed as the ratio of the area S3 to the area S3 of the scumming caused by friction.
第３図によれば、押圧力ｐｘを３００ｇｆ／ｃｍ以上と
した場合には転写効率が９０〜１００％に達し、記録画
像の品質としては問題のない領域となっている。しかし
、押圧力ＰＭが２０００ｇｆ／ｃｍを超えた場合には、
それまで殆ど発生しなかった地汚れが次第に発生し、５
％を超えるようになっている。これは記録ヘッド６によ
る押圧力Ｐ０が非常に高い為に、前記熱転写性インクの
特徴である不均質状態によってもついに地汚れ発生を押
さえることが出来なくなってしまうものである。更に、
前記押圧力Ｐ、が２０００ｇｆ／ｃｍを超える場合には
、記録へソド６の摩耗も激しくなり、且つ感熱転写材１
の搬送も円滑に行われなくなるという不都合も生じてく
る。According to FIG. 3, when the pressing force px is 300 gf/cm or more, the transfer efficiency reaches 90 to 100%, which is an area where there is no problem in terms of the quality of the recorded image. However, if the pressing force PM exceeds 2000gf/cm,
Gradual stains, which had rarely occurred up until then, began to appear.
%. This is because the pressing force P0 by the recording head 6 is so high that it becomes impossible to prevent background smearing even due to the non-uniformity characteristic of the thermal transfer ink. Furthermore,
If the pressing force P exceeds 2,000 gf/cm, the recording blade 6 will be worn severely and the thermal transfer material 1 will be damaged.
This also causes the inconvenience that the conveyance of the materials cannot be carried out smoothly.
以上のことからして、記録ヘッド６の押圧力ＰＨとしで
は記録ヘッド６の一列に形成した発熱部６ａの長さ方向
で表す力で３００ｇｆ／ｃｍ 〜２０００ｇｆ／ｃｍに
、更に好ましくは４００ｇｆ／ｃｍ〜１５００ｇｆ／ｃ
ｍに、最も好ましくは５００ｇｆ／ｃｍ 〜１３００ｇ
ｆ／ｃｏ＋に設定することが望ましい。Based on the above, the pressing force PH of the recording head 6 is 300 gf/cm to 2000 gf/cm, more preferably 400 gf/cm, expressed in the length direction of the heat generating parts 6a formed in one row of the recording head 6. ~1500gf/c
m, most preferably 500gf/cm to 1300g
It is desirable to set it to f/co+.
尚、記録媒体５の表面平滑度が高い場合には前記押圧力
ＰＨを従来と同程度の２００ｇｆ／ｃｍにすれば、転写
効率は約１００％になる。Incidentally, when the surface smoothness of the recording medium 5 is high, if the pressing force PH is set to 200 gf/cm, which is about the same as the conventional one, the transfer efficiency will be about 100%.
また前記記録ヘッド６の押圧力Ｐ、Ｉを設定する場合に
、記録媒体５の背面を支承するプラテンローラ４のゴム
硬度Ｈｖを高くすると、感熱転写材１のインク３と記録
媒体５との接触面積が必要最小限となり、記録ヘッド６
の発熱部６ａの面積と略等しくなる為に、熱印加部のイ
ンクのみが記録媒体５に接触し、記録ヘッド６の押圧力
が熱印加部へ集中して非熱印加部との間のインクの切れ
性も向上するので鮮明な転写画像を得る上で好ましい。Furthermore, when setting the pressing forces P and I of the recording head 6, if the rubber hardness Hv of the platen roller 4 that supports the back surface of the recording medium 5 is increased, the contact between the ink 3 of the thermal transfer material 1 and the recording medium 5 will be increased. The area becomes the minimum necessary, and the recording head 6
Since the area is approximately equal to the area of the heat generating part 6a, only the ink in the heat applying part contacts the recording medium 5, and the pressing force of the recording head 6 is concentrated on the heat applying part, causing the ink between the heat applying part and the non-heat applying part to This is preferable for obtaining clear transferred images because it also improves the cutting ability.
その硬度としては押圧力Ｐ、が３００ｇｆ／ｃｍ〜２０
００ｇｆ／ｃｍの場合には前記硬度Ｈｖを３０度以上に
、好ましくは押圧力ｐ、が５００ｇｆ／ｃｍ 〜１３０
０ｇｆ／ｃ−の場合には硬度Ｈｖを５０度以上にすると
良い。As for its hardness, the pressing force P is 300 gf/cm ~ 20
00 gf/cm, the hardness Hv is 30 degrees or more, preferably the pressing force p is 500 gf/cm to 130
In the case of 0 gf/c-, the hardness Hv is preferably set to 50 degrees or more.
尚、前記硬度ＨｖはＪＩＳＫ６３０１によるスプリング
式ゴム硬度計で表された値である。The hardness Hv is a value expressed using a spring-type rubber hardness meter according to JIS K6301.
上記構成に対して、従来の転写方法にあっては熱溶融性
インクを加熱溶融して記録媒体に浸透した後、感熱転写
材と記録媒体を剥離するというプロセスをとっていた為
に、記録ヘッドによる押圧力Ｐａｌ及びプラテンの硬度
Ｈｖは特に転写画像の品質に影響を与えなかった。その
為に、従来の感熱転写方法にあっては記録ヘッドの発熱
部が感熱転写材に全て接触すること、且つ地汚れが生じ
ないことの２条件を考慮して、記録ヘッドの押圧力Ｐ、
Ｉを２００〜３００ｇｆ／ｃｍ程度に、またプラテンロ
ーラＨｖは３０〜４０度程度に設定していたものである
。In contrast to the above configuration, the conventional transfer method involves heating and melting the heat-melting ink to permeate the recording medium, and then separating the thermal transfer material from the recording medium. The pressing force Pal and the hardness Hv of the platen did not particularly affect the quality of the transferred image. For this reason, in the conventional thermal transfer method, the pressing force P of the recording head,
I was set to about 200 to 300 gf/cm, and platen roller Hv was set to about 30 to 40 degrees.
次に前記構成の各部の構成について更に詳述する。Next, the structure of each part of the above structure will be explained in more detail.
先ず感熱転写材１の支持体２は、従来使用されている支
持体と異なるものでなく、厚さ２〜１５μｍ程度のポリ
エステル、ポリカーボネイト、トリアセチルセルロース
、芳香族ポリアミド、ポリイミド等の比較的耐熱性のよ
いプラスチックのフィルム、セロハン、或いは硫酸紙、
コンデンサー紙等が用いられる。First, the support 2 of the thermal transfer material 1 is not different from conventionally used supports, and is made of a relatively heat-resistant material such as polyester, polycarbonate, triacetyl cellulose, aromatic polyamide, polyimide, etc., with a thickness of about 2 to 15 μm. good plastic film, cellophane or parchment paper,
Condenser paper or the like is used.
インク３は前記した如く加熱によって半溶融状態になる
と共に、接着力を生ずる性質を有するものであり、例え
ば前記した２種類以上のドメインから構成されるもので
ある。これをより詳述すると２種類以上のドメインは、
例えば熱溶融性樹脂微粒子と非粒子状の相との組み合わ
せにより構成される。即ち、例えば、２種類以上のドメ
インのうち少なくとも１種類のドメインが熱溶融性樹脂
微粒子により構成され、且つ他の少なくとも１種類のド
メインが非粒子状の相により構成されている場合、２種
類以上のドメインの夫々が夫々異種の非粒子状の相によ
り構成されている場合、２種類以上のドメインの夫々が
夫々異種の熱溶融性樹脂微粒子により構成されている場
合等がある。As described above, the ink 3 becomes a semi-molten state when heated and has the property of producing adhesive force, and is composed of two or more kinds of domains as described above, for example. To explain this in more detail, two or more types of domains are:
For example, it is composed of a combination of heat-melting resin fine particles and a non-particulate phase. That is, for example, when at least one type of domain among two or more types of domains is constituted by thermofusible resin fine particles, and at least one other type of domain is constituted by a non-particulate phase, two or more types of domains In some cases, each of the domains is composed of different types of non-particulate phases, and in some cases, each of two or more types of domains is each composed of different types of heat-fusible resin fine particles.
上記ドメインの構成を図示して具体的に説明すると、先
ず第５図（八）に示したインク３は、例えばＡ種（白抜
き丸）及びＢ種（黒べた丸）の２種類の熱溶融性樹脂微
粒子により構成されている。To illustrate and specifically explain the structure of the domain, first, the ink 3 shown in FIG. It is composed of fine resin particles.
各ドメインは夫々の単一のＡ種又′はＢ種の熱溶融性樹
脂微粒子により形成されていてもよいし、夫々複数のＡ
種又はＢ種の熱溶融性樹脂微粒子が夫々高次に集合した
集合体により形成されていてもよい。或いはこれ等の単
一微粒子によるドメインと集合体によるドメインとが混
在したような状態となっていてもよい。Each domain may be formed of a single heat-melting resin fine particle of type A or type B, or each domain may be formed of a plurality of heat-melting resin particles of type A or B.
The heat-melting resin fine particles of type B or type B may be formed by an aggregate of higher-order aggregates. Alternatively, the state may be such that a domain made of a single fine particle and a domain made of an aggregate are mixed together.
第５図（Ｂ）に示すインク３は、熱溶融性樹脂微粒子Ｃ
及び非微粒子状の相りにより夫々１種類以上のドメイン
が形成されている。熱溶融性樹脂微粒子Ｃは単一でドメ
インを構成してもよいし、高次に集合した集合体により
ドメインを構成してもよい。また異なる種類の熱熔融性
樹脂微粒子Ｃにより２種類以上のドメインを構成でもよ
い。この場合、微粒子の種類を変えることにより、例え
ば熱時接着力や凝集力といった機能ないし物性の異なる
ドメインが形成される為、各々の機能ないし物性が発現
され昌い状態となる。また同様に非微粒子の相りは、例
えば相分離したような状態で２種類以上のドメインを構
成してもよい。The ink 3 shown in FIG. 5(B) consists of heat-melting resin particles C.
One or more types of domains are each formed by the non-fine particulate phase. A domain may be formed by a single heat-melting resin fine particle C, or a domain may be formed by a high-order aggregate. Further, two or more types of domains may be constituted by different types of hot-melt resin fine particles C. In this case, by changing the type of fine particles, domains with different functions or physical properties, such as hot adhesive strength or cohesive force, are formed, so each function or physical property is expressed and the state is changed. Similarly, the non-fine particles may form two or more types of domains in a phase-separated state, for example.
第５図（Ｃ）に示すインク３は、例えばＥ種（白抜き部
分）及びＦ種（１４目部分）の２種類の非微粒子の相に
より夫々ドメインが形成されている。In the ink 3 shown in FIG. 5(C), domains are formed by two types of non-fine particle phases, for example, type E (white area) and type F (14th part).
また本実施例で使用する酸化ポリエチレンは、熱転写性
インク３を構成する何れの種類のドメインに含まれてい
てもよいし、また２種類以上のドメインに含まれていて
もよいが、効果をより充分に発揮する為には熱転写性イ
ンク３に含有される熱溶融性バインダー総量の３０重量
％以上含まれていることが好ましい。Further, the polyethylene oxide used in this example may be contained in any type of domain constituting the thermal transfer ink 3, or may be contained in two or more types of domains, but the effect may be enhanced. In order to exhibit sufficient performance, it is preferable that the thermal transfer ink 3 contains 30% by weight or more of the total amount of the heat-melting binder.
熱溶融性バインダーは、酸化ポリエチレン以外には特に
制限はなく、配合物として例えばワックス、エチレン、
酢酸ビニル共重合体、エチレン−アクリル酸共重合体等
のポリオレフィン系樹脂、ポリアミド系樹脂、ポリエス
テル系樹脂、エポキシ系樹脂、ポリウレタン系樹脂、ア
クリル系樹脂、ポリ塩化ビニル系樹脂、酢酸ビニル−エ
チレン共重合体等のポリ酢酸ビニル系樹脂、石油系樹脂
、フェノール系樹脂、メラニン系樹脂、尿素系樹脂、ポ
リスチレン系樹脂、スチレン・ブタジェンゴム、イソプ
レンゴム等のエラストマー類等を用いることが出来る。The heat-melting binder is not particularly limited other than oxidized polyethylene, and compounds such as wax, ethylene,
Polyolefin resins such as vinyl acetate copolymers, ethylene-acrylic acid copolymers, polyamide resins, polyester resins, epoxy resins, polyurethane resins, acrylic resins, polyvinyl chloride resins, vinyl acetate-ethylene copolymers, etc. Polymers such as polyvinyl acetate resin, petroleum resin, phenol resin, melanin resin, urea resin, polystyrene resin, styrene-butadiene rubber, isoprene rubber, and other elastomers can be used.
前記構成よりなるインク３は１層でも２層以上でもよい
が、２層以上に構成した場合は少なくとも１層は前記熱
溶融性バインダーの条件を満たす必要がある。またイン
ク層全体の厚さとしては２〜２５μｍ程度、更には３〜
２０μｍが好ましい。尚、２層以上の場合には、各層の
厚さを夫々０．５〜２０μｍ１更には１〜１０μｍとす
るのが好ましい。The ink 3 having the above structure may have one layer or two or more layers, but when it has two or more layers, at least one layer must satisfy the conditions for the heat-melting binder. The thickness of the entire ink layer is about 2 to 25 μm, more preferably 3 to 25 μm.
20 μm is preferred. In addition, in the case of two or more layers, it is preferable that the thickness of each layer is 0.5 to 20 μm, and more preferably 1 to 10 μm.
着色剤としては、従来用いられているカーボンブラック
、ニグロシン染料、ピグメント・オレンジＲ１レーキ・
レッドＣ１フタロシアニンブルー、オイルイエローＧＧ
等の全ての染料、顔料を使用することが出来る。これ等
着色剤は１′一種又は２種以上で使用し、含有量として
は例えば熱溶融性バインダー１００重量部に対して３〜
３００重量部で使用するのが好ましい。As coloring agents, conventionally used carbon black, nigrosine dye, pigment orange R1 lake,
Red C1 Phthalocyanine Blue, Oil Yellow GG
All dyes and pigments can be used. These coloring agents are used in combination of one or more kinds, and the content is, for example, 3 to 100 parts by weight of the heat-melting binder.
Preferably, 300 parts by weight are used.
また本実施例の記録機構としては記録ヘッド６の押圧力
Ｐ、を所定範囲に限定する以外は従来のものと異なると
ころはなく、記録方式としてもタイプライタ−等に用い
られるシリアル型であっても、またファクシミリ等に用
いられるライン型であっても全てに適用し得るものであ
り、またプラテンローラ４の形状も丸型、平型等に限定
されるものでなく、通常丸型とはローラの他、プーリ。The recording mechanism of this embodiment is the same as the conventional one except that the pressing force P of the recording head 6 is limited to a predetermined range, and the recording method is a serial type used in typewriters and the like. Also, the platen roller 4 can be applied to any type, even if it is a line type used for facsimiles, etc., and the shape of the platen roller 4 is not limited to round or flat. Besides, pulley.
エンドレスベルト状のものであり、平型とは金属平板表
面に平板のゴムを取り付けたものである。It is shaped like an endless belt, and the flat type is one in which a flat rubber plate is attached to the surface of a flat metal plate.
更に前記記録ヘッド６の押圧力による感熱転写材１と記
録媒体５との圧接面積に於ける圧力集中をより効率よく
する為に、記録ヘッド６上の発熱部６ａを含むグレーズ
の厚さを通常より厚くするとよい。Furthermore, in order to more efficiently concentrate the pressure in the pressure contact area between the thermal transfer material 1 and the recording medium 5 due to the pressing force of the recording head 6, the thickness of the glaze including the heat generating part 6a on the recording head 6 is set to a normal thickness. It is better to make it thicker.
次に第１図に示した記録装置を使用して行った実験結果
を示す。Next, the results of an experiment conducted using the recording apparatus shown in FIG. 1 will be shown.
実験１
酸化ポリエチレン水分散液 ５５部数平均分子量
５０００
粒子径 １μｍ
軟化温度 １４０℃
ポリ酢酸ビニル水分散液 ４５部軟化温度
１０５℃
粒子径 ０．７μｍ
カーボンブランク水分散液 ２０部以上の固形比
にした各成分を混合してインクを調整し、厚さ３．５μ
ｍのポリエチレンテレフタレートフィルム上にアプリケ
ータを用いてインクを塗布し、８０℃で乾燥して層厚４
μｍのインク層を形成して感熱転写材１を得た。Experiment 1 Polyethylene oxide aqueous dispersion 55 parts Number average molecular weight 5000 Particle size 1 μm Softening temperature 140°C Polyvinyl acetate aqueous dispersion 45 parts Softening temperature
105℃ Particle size 0.7μm Carbon blank aqueous dispersion Prepare ink by mixing each component at a solids ratio of 20 parts or more, and prepare an ink with a thickness of 3.5μm.
The ink was applied using an applicator onto a polyethylene terephthalate film with a thickness of 4 mm and dried at 80°C to a layer thickness of 4.
A thermal transfer material 1 was obtained by forming an ink layer with a thickness of μm.
上記感熱転写材１を用いて、下記の条件のシリアル型の
プリンターで感熱転写記録を行った。Using the thermal transfer material 1 described above, thermal transfer recording was performed using a serial type printer under the following conditions.
記録ヘッド 薄膜型、２４ドツト構成印加エ
ネルギー ３０ｍＪ ／ ｗｍ ”印字
速度 ２５ｃｐｓ記録媒体
ボンド紙（ベック平滑度５秒）押圧条件
記録ヘッドの押圧力Ｐ Ｈ５５０ｇｆ／ｃｍプラテンの
硬度Ｈｖ ７０度（平型）上記条件で得られ
た記録像は第６図（Ａ）に示す如く画像のエツジ部が非
常に鮮明であった。Recording head Thin film type, 24 dot configuration Applied energy 30mJ/wm Printing speed 25cps Recording medium
Bond paper (Beck smoothness 5 seconds) Pressing conditions Recording head pressing force P H 550 gf/cm Platen hardness Hv 70 degrees (flat type) The recorded image obtained under the above conditions has an image as shown in Figure 6 (A). The edges were very clear.
実験２
実験１の構成に於いて、記録ヘッドの押圧条件を以下の
如く設定し、他は実験１と同様にして記録を行った。Experiment 2 In the configuration of Experiment 1, printing was performed in the same manner as in Experiment 1, except that the pressing conditions of the recording head were set as follows.
記録ヘッドの押圧力Ｐ ｏ １０１００Ｏ／ｃ
ｍプラテンローラの硬度Ｈｖ ５０度（丸型）上記
条件で得られた記録像は実験１と同様な第６図（＾）に
示す如く非常に鮮明なものであった。Pressure force of recording head P o 10100O/c
Hardness of platen roller Hv: 50 degrees (round shape) The recorded image obtained under the above conditions was very clear as shown in FIG. 6 (^), which is the same as in Experiment 1.
実験３
実験１の構成に於いて、記録ヘッドの押圧条件を以下の
如く設定し、他は実験１と同様にして記録を行った。Experiment 3 In the configuration of Experiment 1, printing was performed in the same manner as in Experiment 1 except that the pressing conditions of the recording head were set as follows.
記録ヘッドの押圧力Ｐ Ｈ２００ｇｆ／ｃ＋ｗプラテン
の硬度Ｈｖ ３０度（平型）上記条件で得ら
れた記録像は第６図（Ｂ）に示す如くインクの中抜けが
生じ、更にインク切れも悪くて非常に不鮮明なものであ
った。Pressure force of recording head P H 200gf/c+w Hardness of platen Hv 30 degrees (flat type) The recorded image obtained under the above conditions had hollow ink as shown in Fig. 6(B), and also had poor ink shortage. It was very unclear.
実験４
実験１の構成に於いて、記録ヘッドの押圧条件を以下の
如く設定し、他は実験１と同様にして記録を行った。Experiment 4 In the configuration of Experiment 1, printing was performed in the same manner as in Experiment 1, except that the pressing conditions of the recording head were set as follows.
記録ヘッドの押圧力Ｐ Ｈ１５０ｇｆ／ｃｍプラテンロ
ーラの硬度Ｈｖ ３０度（丸型）上記条件で得られ
た記録像は第６図（Ｂ）に示す記録像と略同じでインク
の中抜けが生じ、インク切れも悪くて非常に不鮮明なも
のとなった。Pressure force P of the recording head 150 gf/cm Hardness of the platen roller Hv 30 degrees (round shape) The recorded image obtained under the above conditions is almost the same as the recorded image shown in FIG. 6(B), and there are hollow spots in the ink. The ink ran out poorly and the image was very unclear.
実験５
ワックスを主成分とする熱転写性インクをもつ従来の感
熱転写材を、従来のブリンク−によって実験１と同一の
記録媒体に感熱転写記録を行った処、得られた記録像は
第６図（Ｃ）に示す如く印字品質が非常に劣り、且つ印
字濃度も極端に低いものであった。Experiment 5 Thermal transfer recording was performed on the same recording medium as in Experiment 1 using a conventional blinking method using a conventional thermal transfer material containing a thermal transfer ink containing wax as a main component.The resulting recorded image is shown in Figure 6. As shown in (C), the print quality was very poor and the print density was also extremely low.
実験６
ワックスを主成分とする熱転写性インクをもつ従来の感
熱転写材を、従来のプリンターにより、且つ記録ヘッド
の押圧条件を以下の如〈従来の押圧条件より高くして記
録を行った。Experiment 6 Recording was carried out on a conventional thermal transfer material having a thermal transferable ink containing wax as a main component, using a conventional printer and under conditions of pressure of the recording head higher than the conventional pressure conditions as follows.
記録ヘッドの押圧力Ｐ 、＋５５０ｇｆ／ｃｍプラテン
の硬度Ｈｖ ７０度（平型）上記条件で得ら
れた記録像は第６図（Ｃ）と略同様であって不鮮明なも
のであったが、更に非転写部に於いても記録ヘッドの走
行と感熱転写材の擦過による地汚れが生じ、非常に判読
し難いものであった。Pressure force P of recording head +550gf/cm Hardness of platen Hv 70 degrees (flat type) The recorded image obtained under the above conditions was almost the same as that in FIG. 6(C) and was unclear, but Even in the non-transfer area, scumming occurred due to the running of the recording head and the abrasion of the heat-sensitive transfer material, making it extremely difficult to read.
〈発明の効果〉
本発明は上述の如く、加熱によって半溶融状態となるイ
ンクを有する感熱転写材を使用し、該インクを所定圧力
によって記録媒体と接触させながら転写記録を行うよう
に構成したことによって、表面平滑性の高い記録媒体に
対しては勿論のこと、表面平滑性が低い記録媒体に対し
ても濃度が高く、且つ画像のエツジが鮮明な良画質の記
録をすることが出来るものである。<Effects of the Invention> As described above, the present invention uses a thermal transfer material having an ink that becomes semi-molten when heated, and is configured to perform transfer recording while bringing the ink into contact with a recording medium under a predetermined pressure. This makes it possible to record high-quality images with high density and clear edges, not only on recording media with high surface smoothness, but also on recording media with low surface smoothness. be.
第１図は本発明の一実施例を示す模式断面説明図、第２
図は記録ヘッドの離隔構成説明図、第３図は記録ヘッド
の押圧力に対する転写効率と地汚れ発生率のグラフ、第
４図（Ａ）は転写効率の説明図、第４図（Ｂ）は地汚れ
発生率の説明図、第５図は感熱転写材の構成説明図、第
６図は実験結果を示す画像の説明図である。
１は感熱転写材、２は支持体、３はインク、４はプラテ
ン、５は記録媒体、６は記録ヘッド、６ａは発熱部、６
ｂは軸、６Ｃは戻しバネ、６ｄはヘッドカムモーター、
６ｅはカムである。FIG. 1 is a schematic cross-sectional explanatory diagram showing one embodiment of the present invention, and FIG.
The figure is an explanatory diagram of the spacing configuration of the recording head, Figure 3 is a graph of the transfer efficiency and background stain occurrence rate with respect to the pressing force of the recording head, Figure 4 (A) is an explanatory diagram of the transfer efficiency, and Figure 4 (B) is FIG. 5 is an explanatory diagram of the background smudge occurrence rate, FIG. 5 is an explanatory diagram of the structure of the thermal transfer material, and FIG. 6 is an explanatory diagram of the image showing the experimental results. 1 is a thermal transfer material, 2 is a support, 3 is ink, 4 is a platen, 5 is a recording medium, 6 is a recording head, 6a is a heat generating part, 6
b is the shaft, 6C is the return spring, 6d is the head cam motor,
6e is a cam.
Claims (1)
する感熱記録材を使用し、前記インク層を記録媒体に密
着し、且つ記録ヘッドを前記支持体側に圧接すると共に
パルス状の熱を印加してインクを記録媒体に転写させる
に際し、前記記録ヘッドによる押圧力を３００ｇｆ／ｃ
ｍ〜２０００ｇｆ／ｃｍに設定することを特徴としてな
る感熱転写記録方法。A heat-sensitive recording material having an ink layer on a support that becomes semi-molten when heated is used, the ink layer is brought into close contact with the recording medium, and a recording head is pressed against the support while pulsed heat is applied. When transferring the ink to the recording medium, the pressing force by the recording head is set at 300 gf/c.
A thermal transfer recording method characterized in that the recording speed is set at m to 2000 gf/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP999186A JPS62169684A (en) | 1986-01-22 | 1986-01-22 | Thermal transfer recording method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP999186A JPS62169684A (en) | 1986-01-22 | 1986-01-22 | Thermal transfer recording method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62169684A true JPS62169684A (en) | 1987-07-25 |
Family
ID=11735328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP999186A Pending JPS62169684A (en) | 1986-01-22 | 1986-01-22 | Thermal transfer recording method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62169684A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0238085A (en) * | 1988-07-28 | 1990-02-07 | Canon Inc | Apparatus and method for correcting record |
| JPH0269252A (en) * | 1988-09-05 | 1990-03-08 | Canon Inc | Thermal transfer recording apparatus |
| US5451984A (en) * | 1988-04-12 | 1995-09-19 | Canon Kabushiki Kaisha | Thermal transfer recording method and thermal transfer recording device by use of said method |
-
1986
- 1986-01-22 JP JP999186A patent/JPS62169684A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5451984A (en) * | 1988-04-12 | 1995-09-19 | Canon Kabushiki Kaisha | Thermal transfer recording method and thermal transfer recording device by use of said method |
| JPH0238085A (en) * | 1988-07-28 | 1990-02-07 | Canon Inc | Apparatus and method for correcting record |
| JPH0269252A (en) * | 1988-09-05 | 1990-03-08 | Canon Inc | Thermal transfer recording apparatus |
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