JP2020199682A - Printer and indirect transfer recording method - Google Patents
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Abstract
Description
本発明は、間接転写方式のプリンタに関し、特に顔写真等のカラー画像やセキュリティ性を高めるために設けられたホログラム等の光学デバイス像を品質良く転写記録することができるプリンタおよび間接転写記録方法に関する。 The present invention relates to an indirect transfer type printer, and more particularly to a printer capable of transferring and recording a color image such as a face photograph and an optical device image such as a hologram provided for enhancing security with high quality and an indirect transfer recording method. ..
従来、支持体フィルム上に転写層を設けた中間転写フィルムに、熱転写リボンから画像データに従って画像パターン（顔写真、文字など）を熱転写（１次転写ともいう）して形成し、偽造防止とデザイン等を兼ねたホログラム等のＯＶＤ（Ｏｐｔｉｃａｌ Ｖａｒｉａｂｌｅ Ｄｅｖｉｃｅ）と共にＩＤカード、商品券、有価証券類、パスポートや通帳等の冊子類などの被転写媒体に再転写（２次転写ともいう）する間接転写方式のプリンタが知られ、前記各被転写媒体への好適な画像形成手段として広く使用されている。 Conventionally, an image pattern (face photograph, characters, etc.) is formed by thermal transfer (also referred to as primary transfer) from a thermal transfer ribbon on an intermediate transfer film in which a transfer layer is provided on a support film according to image data to prevent counterfeiting and design. An indirect transfer method that re-transfers (also called secondary transfer) to an ID card, gift certificate, securities, booklet such as passport or passbook, etc. together with OVD (Optical Variable Device) such as hologram that also serves as Printers are known and are widely used as suitable image forming means for each of the transfer media.
このように、ＩＤカード等の被転写媒体に熱転写方式で間接的に画像パターンを施すことは、例えば、画像パターンを付与したい最終の被転写媒体に直接に画像を形成することが技術的に困難であるとか、量産性に欠けるとか、あるいはコストが嵩むとかの問題が伴う場合、上記のような中間転写フィルムにひとまず画像を形成しておき、しかる後に熱ローラや熱圧板等による転写によってその画像を最終製品である被転写媒体へ再転写するという方法がとられている（例えば、特許文献１参照。）。 As described above, it is technically difficult to indirectly apply an image pattern to a transfer medium such as an ID card by a thermal transfer method, for example, to directly form an image on the final transfer medium to which the image pattern is to be applied. If there is a problem such as lack of mass productivity or high cost, an image is formed on the intermediate transfer film as described above for the time being, and then the image is transferred by a thermal roller or a thermal pressure plate. Is re-transferred to the final product, the transfer medium (see, for example, Patent Document 1).
このとき、被転写媒体の記録面には、再転写される画像等を含む転写層との接着性を向上させ、かつ被転写媒体の記録面を平滑化するために、予めスクリーン印刷等の公知の印刷手法により接着層としてプライマ層を８〜１２μｍ程度の厚さで設けることが行われていた。しかし、被転写媒体に予めプライマ層を設けるのは印刷という別プロセスが必要で手間がかかるうえ、プライマ層のない被転写媒体では十分な接着力が得られないため、専用の被転写媒体を用意する必要があり、被転写媒体の制約が大きかった。 At this time, in order to improve the adhesiveness to the transfer layer containing the image to be re-transferred and to smooth the recording surface of the transfer medium on the recording surface of the transfer medium, screen printing or the like is known in advance. The primer layer was provided as an adhesive layer with a thickness of about 8 to 12 μm by the printing method described in the above. However, providing a primer layer on the transfer medium in advance requires a separate process called printing, which requires time and effort, and a transfer medium without a primer layer does not provide sufficient adhesive strength, so a dedicated transfer medium is prepared. It was necessary to do so, and there were many restrictions on the transfer medium.
そのため、最近になって、熱転写リボンに接着層であるプライマ層を設け、中間転写フィルムに画像等を形成した上からプライマ層を全面に転写して、中間転写フィルムから被転写媒体に再転写する際にそのプライマ層ごと画像等を転写することで、予めプライマ層を設けていない被転写媒体に対しても再転写が行えるようにしたプリンタも提案されている。 Therefore, recently, a primer layer, which is an adhesive layer, is provided on the thermal transfer ribbon, an image or the like is formed on the intermediate transfer film, the primer layer is transferred to the entire surface, and the intermediate transfer film is retransferred to the transfer medium. A printer has also been proposed in which the image or the like is transferred together with the primer layer so that the transfer can be performed even on a transfer medium to which the primer layer is not provided in advance.
しかしこの方式のプリンタの問題点として、印刷等で予め設けられるプライマ層は層の厚さを８〜１２μｍと厚くできるが、熱転写リボンから転写できるプライマ層は、他のインキ層の厚さとの関係などから１〜３μｍ程度にしかできないためにプライマ層の厚さが薄く、十分な接着力を得るのが困難な場合があるという問題と、顔写真や文字等の画像や各種のＯＶＤ等を被転写媒体へ再転写する際の品質の劣化の問題があった。 However, as a problem of this type of printer, the primer layer provided in advance for printing or the like can have a thickness of 8 to 12 μm, but the primer layer that can be transferred from the thermal transfer ribbon has a relationship with the thickness of other ink layers. Since the primer layer is thin because it can only be made to about 1 to 3 μm, it may be difficult to obtain sufficient adhesive strength, and images such as facial photographs and characters and various OVDs are covered. There was a problem of quality deterioration when retransferring to a transfer medium.
これらの問題は、特に被転写媒体がパスポートや通帳冊子類など紙を素材とするものである場合に特に顕著な問題であった。すなわち、紙は一般的に数十μｍ程度の太さの微小なパルプ繊維が絡み合って形成されていることから、その表面をミクロ的に見ると、プラスチックカード等の様に平滑ではなく、微小な凹凸が多数形成されている。そのため、接着層であるプライマ層が薄いと、被転写媒体表面の凹凸を埋めきれずに、接着しなかったり、接着力にムラが生じたりしやすかった。 These problems were particularly remarkable when the transfer medium was made of paper such as a passport or a passbook booklet. That is, since paper is generally formed by entwining minute pulp fibers with a thickness of about several tens of μm, when the surface is viewed microscopically, it is not smooth like a plastic card or the like and is minute. Many irregularities are formed. Therefore, if the primer layer, which is the adhesive layer, is thin, the unevenness on the surface of the transfer medium cannot be filled, and the adhesive tends not to adhere or the adhesive force tends to be uneven.
また、画質の劣化の問題は、記録される画像パターンは数十μｍ程度のサイズの画素か
ら形成され、またＯＶＤは可視光の波長に近いｎｍ単位の非常に微細な凹凸により形成されているのが一般的であり、また転写される層も厚さが数μｍ程度と薄いため、再転写の際に紙の表面の凹凸が影響して画素の形状が崩れて画質が劣化したり、ＯＶＤの効果が減殺されてしまったりすることがあった。
Further, the problem of deterioration of image quality is that the recorded image pattern is formed from pixels having a size of about several tens of μm, and the OVD is formed by extremely fine irregularities in nm units close to the wavelength of visible light. In addition, since the layer to be transferred is as thin as a few μm, the unevenness of the surface of the paper affects the shape of the pixels and the image quality deteriorates during retransfer, or the image quality of OVD deteriorates. In some cases, the effect was diminished.
なお、熱転写リボンからプライマ層を複数回重ねて転写して、プライマ層を厚くすることも検討されているが、熱転写リボンを余分に消費し、転写の時間も余計にかかるため現実的ではなかった。 It is also considered to transfer the primer layer from the thermal transfer ribbon multiple times to make the primer layer thicker, but this is not realistic because the thermal transfer ribbon is consumed extra and the transfer time is extra. ..
本発明は、以上のような間接転写記録方式のプリンタの課題を解決するためになされたもので、予め記録面に接着層を設けていない被転写媒体に対しても、画質が劣化することがなく、かつ十分な接着力で再転写可能な間接転写方式のプリンタおよび間接転写記録方法を提供することを課題とする。 The present invention has been made to solve the above-mentioned problems of the indirect transfer recording type printer, and the image quality may deteriorate even for a transfer medium in which an adhesive layer is not provided on the recording surface in advance. It is an object of the present invention to provide an indirect transfer type printer and an indirect transfer recording method that can be re-transferred without and with sufficient adhesive strength.
上記課題を解決するため、本発明は、
ウェブ状の基材に転写層を形成した転写フィルムの前記転写層上に、画像形成層と接着層を有する熱転写リボンから、所定の像情報と、該像情報に積層して前記接着層を転写する１次転写部と、前記転写フィルムから、転写された像情報および接着層を前記転写層と共に紙からなる被転写媒体の記録面にヒートローラで加熱加圧して再転写する２次転写部と、を有する間接転写型のプリンタであって、
前記再転写の前に、前記転写フィルムの基材を介して前記ヒートローラで被転写媒体の記録面を加熱加圧して平滑化することを特徴とするプリンタである。
In order to solve the above problems, the present invention
Predetermined image information and predetermined image information are laminated on the transfer layer of a transfer film having a transfer layer formed on a web-like base material from a thermal transfer ribbon having an image forming layer and an adhesive layer, and the adhesive layer is transferred. A primary transfer unit to be transferred, and a secondary transfer unit that retransfers the image information and the adhesive layer transferred from the transfer film to the recording surface of the transfer medium made of paper together with the transfer layer by heating and pressurizing with a heat roller. An indirect transfer type printer having,
The printer is characterized in that, before the re-transfer, the recording surface of the transfer medium is heated and pressed by the heat roller via the base material of the transfer film to smooth it.
また、上記プリンタにおいて、
前記ヒートローラの外周面に、該外周面を外周方向で区分して、被転写媒体の記録面を加熱加圧して平滑化するための金属の領域と、再転写のための耐熱性エラストマ層の領域とが設けられていても良い。記録面の平滑化と像情報等の再転写のそれぞれにより適した領域を選択して転写することができ、再転写をより安定した品質で行える。
In addition, in the above printer
On the outer peripheral surface of the heat roller, a metal region for dividing the outer peripheral surface in the outer peripheral direction and heating and pressurizing the recording surface of the transfer medium to smooth it, and a heat-resistant elastomer layer for retransferring. A region may be provided. A region more suitable for smoothing the recording surface and re-transferring image information can be selected and transferred, and re-transferring can be performed with more stable quality.
また、上記プリンタにおいて、
前記画像形成層が、複数色で塗り分けられたカラー熱転写インク層であり、前記像情報がカラー画像情報であっても良い。顔写真などの個人情報をフルカラー画像として設けることができる。
In addition, in the above printer
The image forming layer may be a color thermal transfer ink layer painted with a plurality of colors, and the image information may be color image information. Personal information such as a face photograph can be provided as a full-color image.
また、上記プリンタにおいて、
前記画像形成層が、ＯＶＤ（Ｏｐｔｉｃａｌ Ｖａｒｉａｂｌｅ Ｄｅｖｉｃｅ）形成層であり、前記像情報がＯＶＤ情報であっても良い。セキュリティ性の高いパターンを転写記録することができ、被転写媒体の偽造防止効果を高めることができる。
In addition, in the above printer
The image forming layer may be an OVD (Optical Variable Device) forming layer, and the image information may be OVD information. A pattern with high security can be transferred and recorded, and the anti-counterfeiting effect of the transfer medium can be enhanced.
また本発明は、
ウェブ状の基材に転写層を形成した転写フィルムの前記転写層上に、画像形成層と接着層を有する熱転写リボンから、所定の像情報と、該像情報に積層して前記接着層を転写し、次いで、前記転写フィルムから、転写された像情報および接着層を前記転写層と共に紙か
らなる被転写媒体の記録面にヒートローラで加熱加圧して再転写する間接転写記録方法であって、
前記再転写の前に、前記転写フィルムの基材を介して前記ヒートローラで被転写媒体の記録面を加熱加圧して平滑化することを特徴とする間接転写記録方法である。
Further, the present invention
Predetermined image information and predetermined image information are laminated on the transfer layer of a transfer film having a transfer layer formed on a web-like base material from a thermal transfer ribbon having an image forming layer and an adhesive layer, and the adhesive layer is transferred. Then, the indirect transfer recording method in which the image information transferred from the transfer film and the adhesive layer are retransferred by heating and pressurizing with a heat roller to the recording surface of the transfer medium made of paper together with the transfer layer.
This is an indirect transfer recording method characterized by heating and pressurizing the recording surface of the transfer medium with the heat roller to smooth the recording surface of the transfer medium before the retransfer.
本発明によれば、間接転写型のプリンタにおいて、１次転写部で転写フィルムに転写された種々の像情報および接着層を２次転写部で再転写する前に、ヒートローラで紙からなる被転写媒体を加熱加圧して記録面を平滑化するため、転写リボンから転写された比較的薄い接着層であっても被転写媒体の記録面にムラなく接着させることができ、カラー画像やＯＶＤ情報などの像情報の品質が記録面の凹凸の影響で劣化してしまうことがないプリンタを提供できる。 According to the present invention, in an indirect transfer type printer, various image information and an adhesive layer transferred to a transfer film in the primary transfer section are covered with paper by a heat roller before being retransferred in the secondary transfer section. Since the transfer medium is heated and pressed to smooth the recording surface, even a relatively thin adhesive layer transferred from the transfer ribbon can be evenly adhered to the recording surface of the transfer medium, and color images and OVD information. It is possible to provide a printer in which the quality of image information such as the above does not deteriorate due to the influence of unevenness on the recording surface.
以下、本発明の実施の形態を、図面を参照しながら詳細に説明する。なお本発明は以下に説明する実施形態に限定されるものではない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below.
図１は、本発明のプリンタの概略構成図である。また図２は本発明のプリンタに用いる熱転写リボンの一例の平面図である。プリンタ１は、ウェブ状の転写フィルム６と熱転写リボン２をサーマルヘッド７とプラテンローラ８の間に挟持して圧接し、所望の像情報に応じてサーマルヘッドの発熱素子を発熱させて熱転写リボンから転写フィルムの転写層上に像情報を転写する１次転写部と、１次転写後の転写フィルムを被転写媒体１０の記録面に対向させ、ヒートローラ１２とバックアップローラ２３で挟持して加熱加圧しながら搬送することで、像情報と転写層を被転写媒体１０に再転写する２次転写部を有している。 FIG. 1 is a schematic configuration diagram of the printer of the present invention. FIG. 2 is a plan view of an example of the thermal transfer ribbon used in the printer of the present invention. The printer 1 sandwiches the web-shaped transfer film 6 and the thermal transfer ribbon 2 between the thermal head 7 and the platen roller 8 and press-contacts them, and heats the heat generating element of the thermal head according to desired image information to generate heat from the thermal transfer ribbon. The primary transfer unit that transfers image information onto the transfer layer of the transfer film and the transfer film after the primary transfer face the recording surface of the transfer medium 10, and are sandwiched between the heat roller 12 and the backup roller 23 for heating. It has a secondary transfer unit that retransfers the image information and the transfer layer to the transfer medium 10 by transporting while pressing.
転写フィルム６は巻出しロール１６から１次転写部、２次転写部を経由して巻取りロール１７に巻き取られ、熱転写リボン２は巻出しロール１３から１次転写部を経由して巻取りロール１４に巻き取られる。図１はプリンタの概略構成のみを示しており、プリンタ１の駆動に必要な駆動機構、加熱手段、制御装置、センサ等は公知のものを適宜採用して使用することができる。 The transfer film 6 is wound from the unwinding roll 16 to the winding roll 17 via the primary transfer unit and the secondary transfer unit, and the thermal transfer ribbon 2 is wound from the unwinding roll 13 via the primary transfer unit. It is wound on a roll 14. FIG. 1 shows only a schematic configuration of a printer, and known drive mechanisms, heating means, control devices, sensors, and the like that are necessary for driving the printer 1 can be appropriately adopted and used.
本実施形態のプリンタに使用する熱転写リボン２は、ポリエステル系フィルム等の耐熱性の基材上にブラックＢｋ、シアンＣ、マゼンタＭ、イエローＹの４色のカラー熱転写インクのインクパネルと、接着層Ｐのパネルが面順次に塗り分けられて構成される。各パネルのサイズや配置は任意であり、被転写媒体のサイズ等に合わせ適宜設定すればよい。またカラー熱転写インクはこの４色に限られず、３色以下でも５色以上でも良い。またその色は、この４色以外の色を含んでも良い。またカラー熱転写インク以外の機能性熱転写インク、例えば蛍光インク、赤外インク、磁性インクなどを含んでも良い。また各パネルの位置検出のためのセンサマークＳを設けることもできる。また必要に応じサーマルヘッドに当接する背面側に耐熱コート層を設けても良い。 The thermal transfer ribbon 2 used in the printer of the present embodiment is formed by using an ink panel of four color thermal transfer inks of black Bk, cyan C, magenta M, and yellow Y on a heat-resistant base material such as a polyester film, and an adhesive layer. The panel of P is painted in order of surface. The size and arrangement of each panel are arbitrary, and may be appropriately set according to the size of the transfer medium and the like. Further, the color thermal transfer ink is not limited to these four colors, and may be three colors or less or five or more colors. Further, the color may include a color other than these four colors. Further, functional thermal transfer inks other than color thermal transfer inks, such as fluorescent inks, infrared inks, and magnetic inks, may be included. Further, a sensor mark S for detecting the position of each panel can be provided. Further, if necessary, a heat resistant coat layer may be provided on the back surface side in contact with the thermal head.
カラー熱転写インクのインクパネルは、各色のインクパネルから順次色重ねすることで顔写真等のフルカラー画像を形成するのに好適であり、溶融転写型インク、昇華転写型インクのいずれで構成されても良い。接着層Ｐは、被転写媒体１０の記録面と、転写フィルム６の転写層および転写層に転写されたカラー熱転写インクとの接着力を高めるためのプライマ層として転写されるものである。接着層Ｐは、カラー熱転写インクにより形成されるカラー画像上を含め、被転写媒体の記録面のサイズ全体にわたるサイズで転写フィルムに転写される。 The ink panel of the color thermal transfer ink is suitable for forming a full-color image such as a face photograph by sequentially superimposing colors from the ink panel of each color, and may be composed of either a melt transfer type ink or a sublimation transfer type ink. good. The adhesive layer P is transferred as a primer layer for enhancing the adhesive force between the recording surface of the transfer medium 10 and the transfer layer of the transfer film 6 and the color thermal transfer ink transferred to the transfer layer. The adhesive layer P is transferred to the transfer film in a size that covers the entire size of the recording surface of the transfer medium, including on the color image formed by the color thermal transfer ink.
図３、図４は、本発明のプリンタでの記録工程の概要説明図である。図３（ａ）、（ｂ）は主に１次転写の工程を示している。上述の様に、１次転写部において、基材３上のブラックＢｋ、シアンＣ、マゼンタＭ、イエローＹの４色のカラー熱転写インクのインクパネルと、接着層Ｐのパネルが面順次に塗り分けられた熱転写リボン２とＰＥＴ、ＰＥＮなどポリエステル系フィルム等の耐熱性の基材４上に転写層５が設けられた転写フィルム６は、サーマルヘッド７とプラテンローラ８に挟持されて搬送されながら、熱転写リボン２から各色のカラー熱転写インクが転写層５上に順次転写され、顔写真等のカラー画像９が形成される。なお図３（ｂ）で４色のインク層が並置されるように示してあるのは、単に模式的に示したものであって、実際に４色のインクが並置される様に転写されるわけではない。 3 and 4 are schematic explanatory views of a recording process in the printer of the present invention. 3 (a) and 3 (b) mainly show the process of primary transfer. As described above, in the primary transfer portion, the ink panel of the four color thermal transfer inks of black Bk, cyan C, magenta M, and yellow Y on the base material 3 and the panel of the adhesive layer P are painted in a surface-sequential manner. The transfer film 6 provided with the transfer layer 5 on the heat transfer ribbon 2 and the heat-resistant substrate 4 such as a polyester film such as PET or PEN is sandwiched between the thermal head 7 and the platen roller 8 and conveyed. Color thermal transfer inks of each color are sequentially transferred from the thermal transfer ribbon 2 onto the transfer layer 5, and a color image 9 such as a facial photograph is formed. It should be noted that what is shown in FIG. 3B so that the four color ink layers are juxtaposed is merely schematically shown, and is transferred so that the four color inks are actually juxtaposed. Do not mean.
続いて、熱転写リボン２から接着層Ｐが、カラー画像９を覆い、実際に被転写媒体の記録面に転写される面積を少なくとも覆う様に転写される。図３（ｂ）は、以上の様に転写フィルム６上に１次転写が行われた状態を示している。 Subsequently, the adhesive layer P is transferred from the thermal transfer ribbon 2 so as to cover the color image 9 and at least cover the area actually transferred to the recording surface of the transfer medium. FIG. 3B shows a state in which the primary transfer is performed on the transfer film 6 as described above.
図３（ｃ）は、紙からなる被転写媒体の記録面の断面を模式的に示した図であり、記録面１１は、一般に数十μｍの太さである紙のパルプ繊維が絡まった性状であるため、微小な凹凸があるのが一般的な態様である。この状態の記録面１１に、図３（ｂ）に示した様に１次転写が行われた転写フィルム６から２次転写を行うと、特に紙の凹部を接着層Ｐのインクが埋めきれずに転写されなかったり、転写されても十分な接着力が得られなかったりすることがあった。 FIG. 3C is a diagram schematically showing a cross section of a recording surface of a transfer medium made of paper, and the recording surface 11 has a property in which pulp fibers of paper, which are generally several tens of μm thick, are entangled. Therefore, it is a general aspect that there are minute irregularities. When the secondary transfer is performed on the recording surface 11 in this state from the transfer film 6 on which the primary transfer is performed as shown in FIG. 3 (b), the ink of the adhesive layer P cannot fill the recesses of the paper in particular. In some cases, it was not transferred to the ink, or even if it was transferred, sufficient adhesive strength could not be obtained.
そこで本発明のプリンタでは、図４（ｄ）に示すように、被転写媒体１０に２次転写（再転写）が行われる前に、転写フィルムの基材４を介してヒートローラ１２で加熱加圧して平滑化し、より平滑化された記録面１５を得る。このときのヒートローラの温度および加圧力は、実際に２次転写を行う際の温度および加圧力と同等でよい。またその回数は１回以上で、複数回でもよい。 Therefore, in the printer of the present invention, as shown in FIG. 4D, the heat roller 12 heats the transfer medium 10 through the base material 4 of the transfer film before the secondary transfer (retransfer) is performed. The pressure is smoothed to obtain a smoother recording surface 15. The temperature and pressing force of the heat roller at this time may be the same as the temperature and pressing force at the time of actually performing the secondary transfer. The number of times is one or more, and may be a plurality of times.
続いて、転写フィルム６の、１次転写が行われてカラー画像９および接着層Ｐが形成された部位と、転写媒体１０のより平滑化された記録面１５とを対向させ、ヒートローラ１２で加熱加圧し（図４（ｅ））、接着層Ｐを記録面に接着させ、カラー画像９、および転写層５を被転写媒体１０に２次転写する（図４（ｆ））。記録面が平滑化されていることで、熱転写リボンから転写された比較的薄い接着層Ｐであっても、転写されない部分や接着力の弱い部分がなく、良好に２次転写（再転写）が行える。転写フィルム６の２次転写された部分は基材４のみの部分１８となり、この部分を次の被転写体の記録面の平滑化の際に、平滑化のための基材として使用することができる。以上が２次転写（再転写）の工程の概要である。 Subsequently, the portion of the transfer film 6 where the color image 9 and the adhesive layer P were formed by the primary transfer was opposed to the smoother recording surface 15 of the transfer medium 10, and the heat roller 12 was used. The adhesive layer P is adhered to the recording surface by heating and pressurizing (FIG. 4 (e)), and the color image 9 and the transfer layer 5 are secondarily transferred to the transfer medium 10 (FIG. 4 (f)). Since the recording surface is smoothed, even a relatively thin adhesive layer P transferred from the thermal transfer ribbon has no non-transferred part or weak adhesive part, and the secondary transfer (retransfer) can be performed well. You can. The second transferred portion of the transfer film 6 becomes a portion 18 of only the base material 4, and this part can be used as a base material for smoothing when smoothing the recording surface of the next transfer target. it can. The above is the outline of the secondary transfer (retransfer) process.
なお、新たな転写フィルムを最初に使用する場合、すなわち使用済みで基材のみとなった領域がない転写フィルムの場合は、転写フィルムのロールの巻出し部に一般的に設けられているリーダーテープの部分を、基材のみの部分の代わりに平滑化に使用することが可
能である。
When a new transfer film is used for the first time, that is, in the case of a transfer film that has been used and has no area that is only a base material, a leader tape generally provided at the unwinding portion of the roll of the transfer film. Can be used for smoothing instead of the substrate-only portion.
図５は、本発明のプリンタでの２次転写工程の説明図である。前述の２次転写の工程をより具体的に示したものである。転写フィルム６には、２次転写後の基材のみとなった部分１８と、１次転写が行われてカラー画像９、接着層Ｐが転写されている部分と、まったく未使用の部分とがある。２次転写の前にまず、被転写媒体１０と転写フィルムの基材のみの部分１８とが対向する様に位置合わせして搬送、ヒートローラ１２とバックアップローラ２３で圧着し、搬送路１９に沿って搬送することで被転写媒体１０の記録面の平滑化を行う（図５（ａ））。 FIG. 5 is an explanatory diagram of a secondary transfer step in the printer of the present invention. It shows the step of the secondary transfer described above more concretely. The transfer film 6 has a portion 18 that is only the base material after the secondary transfer, a portion where the primary transfer is performed and the color image 9, the adhesive layer P is transferred, and a completely unused portion. is there. Before the secondary transfer, first, the transfer medium 10 and the base material-only portion 18 of the transfer film are aligned and conveyed so as to face each other, and the heat roller 12 and the backup roller 23 are used to crimp the transfer medium 10 along the transfer path 19. The recording surface of the transfer medium 10 is smoothed by carrying the transfer medium (FIG. 5 (a)).
平滑化するには、例えば２次転写を行うヒートローラ１２と別に、平滑化専用のローラを設けることも考えられるが、装置がより複雑化、大型化してしまうため好ましくない。本発明のプリンタでは、転写フィルムの基材のみの部分１８を利用することで、ヒートローラ１２を平滑化に使用できるため、装置が複雑化、大型化せず好ましい。 For smoothing, for example, it is conceivable to provide a roller dedicated to smoothing in addition to the heat roller 12 that performs secondary transfer, but this is not preferable because the apparatus becomes more complicated and larger. In the printer of the present invention, the heat roller 12 can be used for smoothing by using only the base material portion 18 of the transfer film, which is preferable without complicating and increasing the size of the apparatus.
次いで、ヒートローラ１２の圧着を解除し、バックアップローラ２３や搬送ローラ等を逆転させて被転写媒体１０を逆送し、元の位置まで戻す（図５（ｂ））。次いで、被転写媒体１０と転写フィルム６の１次転写が行われてカラー画像９、接着層Ｐが転写されている部分とを位置合わせして、ヒートローラ１２とバックアップローラ２３で圧着し、搬送路１９に沿って搬送することで被転写媒体１０に転写フィルム６からカラー画像９、接着層Ｐ、転写層（図示せず）を転写する（図５（ｃ））。その後被転写媒体１０は搬送経路１９に沿って搬送されて排出される。 Next, the crimping of the heat roller 12 is released, the backup roller 23, the transport roller, and the like are reversed to reverse-feed the transfer medium 10 and return it to its original position (FIG. 5 (b)). Next, the transfer medium 10 and the transfer film 6 are first transferred, and the color image 9 and the portion to which the adhesive layer P is transferred are aligned, crimped by the heat roller 12 and the backup roller 23, and conveyed. The color image 9, the adhesive layer P, and the transfer layer (not shown) are transferred from the transfer film 6 to the transfer medium 10 by being conveyed along the path 19 (FIG. 5 (c)). After that, the transfer medium 10 is transported along the transport path 19 and discharged.
図６は、本発明のプリンタのヒートローラの形態例の斜視図である。本形態のヒートローラ２０は主として金属で構成され、外周面を外周方向で区分して、被転写媒体１０の記録面を加熱加圧して平滑化するための金属の領域２１と、カラー画像や接着層を２次転写（再転写）するための耐熱性エラストマ層の領域２２とが設けられている。被転写媒体１０の記録面を加熱加圧して平滑化する際は、図７（ａ）の様に金属の領域２１を被転写媒体１０と位置合わせし、硬い金属の領域２１でより効果的に凹凸を圧し潰して平滑化することができる。一方、転写フィルム６から紙の被転写媒体１０にカラー画像や接着層を２次転写（再転写）する際には、硬い金属では圧ムラが生じることがあり、図７（ｂ）の様に耐熱性エラストマ層の領域２２を被転写媒体１０と位置合わせして２次転写（再転写）を行うことで、記録面に良く追従してムラのない再転写をより安定して行うことができる。 FIG. 6 is a perspective view of a form example of the heat roller of the printer of the present invention. The heat roller 20 of the present embodiment is mainly composed of metal, and the outer peripheral surface is divided in the outer peripheral direction, and the recording surface of the transfer medium 10 is heated and pressed to smooth the metal region 21 and a color image or adhesion. A region 22 of a heat-resistant elastomer layer for secondary transfer (retransfer) of the layer is provided. When the recording surface of the transfer medium 10 is heated and pressed to smooth it, the metal region 21 is aligned with the transfer medium 10 as shown in FIG. 7A, and the hard metal region 21 is more effective. The unevenness can be crushed and smoothed. On the other hand, when a color image or an adhesive layer is secondarily transferred (re-transferred) from the transfer film 6 to the paper transfer medium 10, pressure unevenness may occur with a hard metal, as shown in FIG. 7 (b). By aligning the region 22 of the heat-resistant elastoma layer with the transfer medium 10 and performing the secondary transfer (retransfer), it is possible to follow the recording surface well and perform even retransfer more stably. ..
この様に、特性の異なる領域をヒートローラ２０の外周面に設けることで、それぞれの目的により適した材質の領域を選択できるため、より好ましい。 By providing the regions having different characteristics on the outer peripheral surface of the heat roller 20 in this way, it is possible to select a region of a material more suitable for each purpose, which is more preferable.
本発明のプリンタには、図２に例示したようなカラー熱転写リボン２に以外にも、例えば図８に示すようなＯＶＤ（Ｏｐｔｉｃａｌ Ｖａｒｉａｂｌｅ Ｄｅｖｉｃｅ）転写リボン２４を適用することもできる。ＯＶＤ転写リボン２４は、基材上にホログラム、回折格子、グレーティングなどの微細構造を有する光学デバイスが表面または層内に設けられた転写層が一つ以上形成され、接着層Ｐが設けられた熱転写リボンである。例えばそれぞれ回折方向や回折光の波長が異なる回折格子を設けた転写層Ｈ１、Ｈ２、Ｈ３、Ｈ４を面順次に設け、それぞれの回折格子を組み合わせた複雑なパターンを１次転写して、さらに２次転写することで、よりセキュリティ性の高いパターンや個別のパターンを被転写媒体に設けるために適用できる。１次転写の工程は基本的に前述のカラー熱転写リボン２と同様である。 In addition to the color thermal transfer ribbon 2 illustrated in FIG. 2, the printer of the present invention can also be applied, for example, an OVD (Optical Variable Device) transfer ribbon 24 as shown in FIG. The OVD transfer ribbon 24 has one or more transfer layers on which an optical device having a fine structure such as a hologram, a diffraction grating, or a grating is provided on the surface or in the layer, and the adhesive layer P is provided. It is a ribbon. For example, transfer layers H1, H2, H3, and H4 provided with diffraction gratings having different diffraction directions and wavelengths of diffracted light are provided in a plane-sequential manner, and a complex pattern combining each diffraction grating is first-order transferred, and then 2 By the next transfer, it can be applied to provide a pattern with higher security or an individual pattern on the transfer medium. The primary transfer step is basically the same as that of the color thermal transfer ribbon 2 described above.
以下に実施例により本発明をより具体的に説明する。 Hereinafter, the present invention will be described in more detail with reference to Examples.
＜実施例１＞
・被転写媒体：記録面を上質紙（しらおい１２０ｇ／ｍ２、日本製紙製）とした冊子
・カラー熱転写リボン：Ｂｋ、Ｃ、Ｍ、Ｙ、蛍光インク、Ｐの６色塗分けインクリボン
・転写フィルム：間接転写型プリンタｅＰ６００（凸版印刷製）用の転写フィルム
（転写記録）
・転写フィルム上にカラー熱転写リボンで墨ベタのパターンを１次転写した。
・図５と同等の装置にて、被転写媒体の記録面の平滑化を行った後、上記の墨ベタのパターンを被転写媒体に２次転写した。
（評価方法）
・被転写媒体に転写された墨ベタパターンの濃度を反射濃度計（マクベスＲＤ９１８）で測定した。
・被転写媒体に転写された墨ベタパターンをマイクロスコープで観察し、紙繊維の画質への影響を目視にて確認した。
・結果を表１にまとめる。
<Example 1>
-Transfer medium: Booklet with high-quality paper (Shiraoi 120 g / m 2 , manufactured by Nippon Paper Industries) on the recording surface-Color thermal transfer ribbon: Bk, C, M, Y, fluorescent ink, P 6-color ink ribbon- Transfer film: Transfer film (transfer recording) for indirect transfer printer eP600 (manufactured by relief printing)
-The solid black pattern was first transferred onto the transfer film with a color thermal transfer ribbon.
After smoothing the recording surface of the transfer medium using the same apparatus as in FIG. 5, the above solid black pattern was secondarily transferred to the transfer medium.
(Evaluation method)
-The density of the black solid pattern transferred to the transfer medium was measured with a reflection densitometer (Macbeth RD918).
-The solid black pattern transferred to the transfer medium was observed with a microscope, and the effect on the image quality of the paper fiber was visually confirmed.
・ The results are summarized in Table 1.
＜比較例１＞
・被転写媒体の記録面の平滑化を行わないほかは、実施例１と同様にして被転写媒体に墨ベタパターンを転写し、評価した。
・結果を表１にまとめる。
<Comparative example 1>
-The black solid pattern was transferred to the transfer medium in the same manner as in Example 1 except that the recording surface of the transfer medium was not smoothed, and evaluated.
・ The results are summarized in Table 1.
表１から明らかに、ヒートローラにより被転写媒体の記録面の平滑化を行うことで転写濃度が向上し、紙繊維の影響が少なくできることが確認でき、本発明のプリンタの優位性が確認できた。 As is clear from Table 1, it was confirmed that the transfer density was improved and the influence of paper fibers could be reduced by smoothing the recording surface of the transfer medium with a heat roller, and the superiority of the printer of the present invention was confirmed. ..
１・・・プリンタ
２・・・熱転写リボン
３、４・・・基材
５・・・転写層
６・・・転写フィルム
７・・・サーマルヘッド
８・・・プラテンローラ
９・・・カラー画像
１０・・・被転写媒体
１１・・・記録面
１２、２０・・・ヒートローラ
１３、１６・・・巻出しロール
１４、１７・・・巻取りロール
１５・・・平滑化された記録面
１８・・・基材のみの部分
１９・・・搬送路
２１・・・金属の領域
２２・・・耐熱性エラストマ層の領域
２３・・・バックアップローラ
1 ... Printer 2 ... Thermal transfer ribbon 3, 4 ... Base material 5 ... Transfer layer 6 ... Transfer film 7 ... Thermal head 8 ... Platen roller 9 ... Color image 10 ... Transfer medium 11 ... Recording surface 12, 20 ... Heat roller 13, 16 ... Unwinding roll 14, 17 ... Winding roll 15 ... Smoothed recording surface 18. .. Substrate only portion 19 ... Transport path 21 ... Metal region 22 ... Heat resistant elastomer layer region 23 ... Backup roller
Claims (5)
前記再転写の前に、前記転写フィルムの基材を介して前記ヒートローラで被転写媒体の記録面を加熱加圧して平滑化することを特徴とするプリンタ。 Predetermined image information and predetermined image information are laminated on the transfer layer of a transfer film having a transfer layer formed on a web-like base material from a thermal transfer ribbon having an image forming layer and an adhesive layer, and the adhesive layer is transferred. A primary transfer unit to be transferred, and a secondary transfer unit that retransfers the image information and the adhesive layer transferred from the transfer film to the recording surface of the transfer medium made of paper together with the transfer layer by heating and pressurizing with a heat roller. An indirect transfer type printer having,
A printer characterized in that, before the re-transfer, the recording surface of the transfer medium is heated and pressed by the heat roller through the base material of the transfer film to smooth it.
前記再転写の前に、前記転写フィルムの基材を介して前記ヒートローラで被転写媒体の記録面を加熱加圧して平滑化することを特徴とする間接転写記録方法。 Predetermined image information and predetermined image information are laminated on the transfer layer of a transfer film having a transfer layer formed on a web-like base material from a thermal transfer ribbon having an image forming layer and an adhesive layer, and the adhesive layer is transferred. Then, an indirect transfer recording method in which the image information transferred from the transfer film and the adhesive layer are retransferred by heating and pressurizing with a heat roller to the recording surface of a transfer medium made of paper together with the transfer layer.
An indirect transfer recording method characterized by heating and pressurizing the recording surface of a transfer medium with the heat roller via the base material of the transfer film to smooth the recording surface before the retransfer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021070221A (en) * | 2019-10-30 | 2021-05-06 | 株式会社ミヤコシ | Transfer device and transfer method of the same |
| JP2021070222A (en) * | 2019-10-30 | 2021-05-06 | 株式会社ミヤコシ | Transfer device and transfer method of the same |
| CN114312092A (en) * | 2021-12-30 | 2022-04-12 | 湖南鼎一致远科技发展有限公司 | Thermal printing method suitable for multiple media |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021070221A (en) * | 2019-10-30 | 2021-05-06 | 株式会社ミヤコシ | Transfer device and transfer method of the same |
| JP2021070222A (en) * | 2019-10-30 | 2021-05-06 | 株式会社ミヤコシ | Transfer device and transfer method of the same |
| JP7055407B2 (en) | 2019-10-30 | 2022-04-18 | 株式会社ミヤコシ | Transfer device and its transfer method |
| JP7055408B2 (en) | 2019-10-30 | 2022-04-18 | 株式会社ミヤコシ | Transfer device and its transfer method |
| CN114312092A (en) * | 2021-12-30 | 2022-04-12 | 湖南鼎一致远科技发展有限公司 | Thermal printing method suitable for multiple media |
| CN114312092B (en) * | 2021-12-30 | 2023-10-24 | 湖南鼎一致远科技发展有限公司 | Thermal printing method suitable for multiple media |
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