JPH01218886A - Thermal transfer film - Google Patents

Thermal transfer film

Info

Publication number
JPH01218886A
JPH01218886A JP63046288A JP4628888A JPH01218886A JP H01218886 A JPH01218886 A JP H01218886A JP 63046288 A JP63046288 A JP 63046288A JP 4628888 A JP4628888 A JP 4628888A JP H01218886 A JPH01218886 A JP H01218886A
Authority
JP
Japan
Prior art keywords
layer
ink layer
thermal transfer
film
transfer film
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
Application number
JP63046288A
Other languages
Japanese (ja)
Inventor
Minoru Murano
村野　実
Takayuki Hokota
鉾田　孝之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic System Solutions Japan Co Ltd
Original Assignee
Matsushita Graphic Communication Systems Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Graphic Communication Systems Inc filed Critical Matsushita Graphic Communication Systems Inc
Priority to JP63046288A priority Critical patent/JPH01218886A/en
Publication of JPH01218886A publication Critical patent/JPH01218886A/en
Pending legal-status Critical Current

Links

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
    • B41M5/38214—Structural details, e.g. multilayer systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • 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
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/42—Intermediate, backcoat, or covering layers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Abstract

PURPOSE:To make it difficult to read image information recorded by thermal transfer from traces of the image information and enhance property for preserving confidential information, by providing a film base with a colored layer having a color similar to that of a heat-fusible ink layer provided on the film base. CONSTITUTION:A thermal transfer film 10 comprises a colorless transparent film material, e.g., a polyester film as a base 2, on which a heat-resistant layer 1 and a mat layer 3 are provided, and a heat fusible ink layer 4 is provided over the entire surface of the mat layer 3 by coating or the like. The mat layer 3 constitutes a colored layer having the same color as that of the ink layer 4. Where the ink layer 4 is opaque and black, the mat layer 3 is also made opaque and black. The used thermal transfer film 10 carries parts 5 deprived of the ink layer in the same patterns as the recording patterns formed on a recording paper by partial transfer of the ink layer 4 by heating, but there is almost no contrast that enables discrimination between the parts 5 devoid of the ink layer and the ink layer 4.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ファクシミリや複写機などの記録装置で用い
られる熱転写フィルムに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a thermal transfer film used in recording devices such as facsimile machines and copying machines.

従来の技術 従来この種の熱転写フィルムは、第３図に示すように、
ポリエステルフィルム等の無色透明なフィルム材を基材
２とし、この基材２に、それぞれに無色透明な耐熱層１
とマット層３を設けるとともに、マット層３の上から熱
溶融性インク層４を塗布などによって全面的に設けるこ
とによって構成されていた。BACKGROUND OF THE INVENTION Conventionally, this type of thermal transfer film is as shown in FIG.
A colorless and transparent film material such as a polyester film is used as the base material 2, and a colorless and transparent heat-resistant layer 1 is provided on each of the base materials 2.
In addition to providing a matte layer 3, a heat-melting ink layer 4 is provided over the entire surface of the matte layer 3 by coating or the like.

このように構成された熱転写フィルム１０は、たとえば
熱記録ヘッドと記録紙との間に挾まれて部分的に加熱さ
れることによシ、その加熱部分のインク層４だけが選択
的に溶融されて記録紙側に転写される。記録紙には、部
分的に溶融・転写されたインク層によって、文字や図形
等の画像が記録される。The thermal transfer film 10 configured in this manner is, for example, sandwiched between a thermal recording head and a recording paper and partially heated, so that only the ink layer 4 in the heated portion is selectively melted. is transferred to the recording paper. Images such as characters and figures are recorded on the recording paper by a partially melted and transferred ink layer.

発明が解決しようとする課題 しかし、かかる構成によれば、記録紙などの記録媒体に
記録された文字や図形等の画像情報の痕跡が使用済みの
熱転写フィルムに非常に容易に判読できる状態で残って
しまうため、機密性が低いという課題があった。Problems to be Solved by the Invention However, with this configuration, traces of image information such as characters and figures recorded on a recording medium such as recording paper remain on the used thermal transfer film in a very easily legible state. There was an issue of low confidentiality due to the

上述の課題は以下の理由で生ずる。The above-mentioned problem arises for the following reasons.

すなわち、第３図に示すように、使用済みの熱転写フィ
ルム１０には、加熱によるインク層４０部分的な転写に
よって、記録紙に形成された記録パターンと同一パター
ンの無インク層部分５が残される。一方、従来のこの種
の熱転写フィルム１０は、そのインク層４を除いた部分
、すなわち耐熱層１基材２、マット層３はいずれも無色
透明であった。That is, as shown in FIG. 3, an ink-free layer portion 5 having the same pattern as the recording pattern formed on the recording paper is left on the used thermal transfer film 10 due to partial transfer of the ink layer 40 by heating. . On the other hand, in the conventional thermal transfer film 10 of this type, the portions excluding the ink layer 4, that is, the heat-resistant layer 1 base material 2, and the matte layer 3 were all colorless and transparent.

このため、使用済みの熱転写フィルム１０には、上記無
インク層部分５だけが光ｔを選択的に透過するようにな
る。Therefore, only the ink-free layer portion 5 of the used thermal transfer film 10 selectively transmits the light t.

この結果、第４図に示すように、使用済みの熱転写フィ
ルム１０には、熱転写されずに残されたインク層４の部
分と熱転写された無インク層部分５との間に大きなコン
トラストが生じて、記録紙に形成された画像情報の痕跡
が白抜きの形で非常に鮮やかに残ってしまう。As a result, as shown in FIG. 4, on the used thermal transfer film 10, there is a large contrast between the portion of the ink layer 4 that has not been thermally transferred and the non-ink layer portion 5 that has been thermally transferred. , traces of image information formed on the recording paper remain very vivid in the form of white outlines.

したがって、記録紙等の記録媒体に記録された画像情報
は、使用済みの熱転写フィルム１０をバックライトある
いは白地背景にかざしたりすることなどによって、いと
も簡単に判読されてしまう。Therefore, image information recorded on a recording medium such as recording paper can be easily read by holding the used thermal transfer film 10 up against a backlight or a white background.

本発明は、上述の課題に鑑みてなされたもので熱転写に
よって記録された画像情報の痕跡からの判読を困難にし
て機密性を高めることができる熱転写フィルムを提供す
ることを目的とする。The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a thermal transfer film that can improve confidentiality by making it difficult to decipher traces of image information recorded by thermal transfer.

課題を解決するだめの手段 本発明は上述の課題を解決するため、熱溶融性イ″ンク
層が積層されるフィルム状基材に上記インク層と同色系
の着色層を形成するという構成を備えたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention includes a structure in which a colored layer having the same color as the ink layer is formed on a film-like base material on which a heat-melting ink layer is laminated. It is something that

作用 本発明は上述の構成によって、熱転写されずに残された
インク層部分と熱転写された無インク層部分との間にコ
ントラストをほとんど生じさせなくすることができるた
めに、熱転写によって記録された画像情報の痕跡からの
判読を困難にして機密性を高めることが可能となる。Effect of the Invention With the above-described structure, the present invention makes it possible to almost eliminate contrast between the ink layer portion left without being thermally transferred and the thermally transferred non-ink layer portion. It becomes possible to increase confidentiality by making it difficult to decipher information from traces.

実施例 第１図は本発明の一実施例による熱転写フィルムの概略
構成を示す。Embodiment FIG. 1 shows a schematic structure of a thermal transfer film according to an embodiment of the present invention.

まず、同図に示す熱転写フィルム１０は、ポリエステル
フィルム等の無色透明なフィルム材を基材２とし、この
基材２に、耐熱層１とマット層３を設けるとともに、マ
ット層３の上から熱溶融性インク層４を塗布などによっ
て全面的に設けることによって構成されている。First, the thermal transfer film 10 shown in the figure uses a colorless and transparent film material such as a polyester film as a base material 2, and a heat-resistant layer 1 and a matte layer 3 are provided on this base material 2, and heat is applied from above the matte layer 3. It is constructed by providing a meltable ink layer 4 over the entire surface by coating or the like.

これによシ、同図に示す熱転写フィルム１０は、たとえ
ば熱記録ヘッドと記録紙との間に挾まれて部分的に加熱
されることによシ、その加熱部分のインク層４だけが選
択的に溶融されて記録紙側に転写されるようになってい
る。この転写により、記録紙には上記加熱部分のパター
ンに沿って部分的に転写されたインク層による画像が記
録されるようになる。これとともに、熱転写フィルム１
０には、記録紙に転写されたインク層の跡に無インク層
部分５が残るようになる。As a result, the thermal transfer film 10 shown in the figure is partially heated by being sandwiched between the thermal recording head and the recording paper, for example, so that only the ink layer 4 in the heated portion is selectively heated. The image is melted and transferred to the recording paper. As a result of this transfer, an image is recorded on the recording paper by the partially transferred ink layer along the pattern of the heated portion. Along with this, the thermal transfer film 1
0, a non-ink layer portion 5 remains on the trace of the ink layer transferred to the recording paper.

ここで、同図に示した熱転写フィルム１０は、上述の構
成に加えて、マット層３が上記インク層４と同色に着色
されて着色層を形成している。たとえば、インク層４が
不透明な黒色であったならばマット層３も不透明な黒色
に着色される。Here, in addition to the above-described structure, the thermal transfer film 10 shown in the figure has the matte layer 3 colored in the same color as the ink layer 4 to form a colored layer. For example, if the ink layer 4 is opaque black, the matte layer 3 is also colored opaque black.

これによシ、第１図に示すように、使用済みの熱転写フ
ィルム１０には、加熱によるインク層４の部分的な転写
によって、記録紙に形成された記録パターンと同一パタ
ーンの無インク層部分５が残されるが、この無インク層
部分５は、残されたインク層４の部分と同色に着色され
ているために、インク層４と同じように光ｔの透過を遮
断する。Therefore, as shown in FIG. 1, the used thermal transfer film 10 has a non-ink layer portion with the same pattern as the recording pattern formed on the recording paper by partial transfer of the ink layer 4 by heating. However, this ink-free layer portion 5 is colored in the same color as the remaining portion of the ink layer 4, and thus blocks the transmission of light t in the same way as the ink layer 4.

仮に、一部の色の光を透過しても、インク層４と無イン
ク層部分５は同色に着色されていて同じような色成分の
光を透過させるようになる。Even if some colored light is transmitted, the ink layer 4 and the ink-free layer portion 5 are colored in the same color and will transmit light of similar color components.

このため、第２図に示すように、使用済みの熱転写フィ
ルム１０には、記録紙に記録された画像情報の痕跡が無
インク層部分５として残るものの、その無インク層部分
５とインク層４とを区別させるようなコントラストはほ
とんど生じない。したがって、使用済みの熱転写フィル
ム１０をバックライトあるいは白地背景にかざしたりし
ても、記録紙に記録された画像情報の判読はほとんど不
可能となる。これによシ、使用済みの熱転写フィルムか
ら記録画情報が判読される恐れを払拭して機密性を高め
ることができるようになる。Therefore, as shown in FIG. 2, although traces of the image information recorded on the recording paper remain as the ink-free layer portion 5 on the used thermal transfer film 10, the ink-free layer portion 5 and the ink layer 4 remain on the used thermal transfer film 10. There is almost no contrast to distinguish between the two. Therefore, even if the used thermal transfer film 10 is held up against a backlight or a white background, it is almost impossible to read the image information recorded on the recording paper. This makes it possible to eliminate the fear that recorded image information will be read from the used thermal transfer film, thereby increasing confidentiality.

なお、上述した実施例では、基材２に設けられるマット
層３をインク層４と同色に着色していたが、基材２その
ものを同色に着色しても同様の効果を得ることができる
。あるいは、耐熱層１を着色してもよい。また、基材２
の材質を選ぶことにより、耐熱層１とマット層３を省略
して構成することも可能である。In the above embodiment, the matte layer 3 provided on the base material 2 was colored in the same color as the ink layer 4, but the same effect can be obtained even if the base material 2 itself is colored in the same color. Alternatively, the heat-resistant layer 1 may be colored. In addition, base material 2
It is also possible to omit the heat-resistant layer 1 and the matte layer 3 by selecting the material.

発明の効果 以上の説明から明らかなように、本発明は、熱溶融性イ
ンク層が積層されるフィルム状基材に上記インク層と同
色系の着色層を形成することによって、熱転写されずに
残されたインク層の部分と熱転写された無インク層部分
５との間にコントラストを生じさせなくすることができ
るため、熱転写によって記録された画像情報の痕跡から
の判読を困難にして機密性を高めることができる、とい
う効果を有するものである。Effects of the Invention As is clear from the above explanation, the present invention has the advantage of forming a colored layer of the same color as the ink layer on the film-like base material on which the heat-melting ink layer is laminated, so that the ink layer does not remain without being thermally transferred. Since it is possible to eliminate contrast between the ink layer portion 5 that has been thermally transferred and the non-ink layer portion 5 that has been thermally transferred, it is difficult to decipher the image information recorded by thermal transfer from the traces, thereby increasing confidentiality. This has the effect that it can be done.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例を示す熱転写フィルムの概略
構成を示す部分拡大断面図、第２図は同フィルムの一部
を示す平面図、第３図は従来の熱転写フィルムの概略構
成を示す部分拡大断面図、第４図は同フィルムの二部を
示す平面図である。 １０・・・熱転写フィルム、１・・・耐熱層、２・・・
フィルム状基材、３・・・マット層（着色層）、４・・
・熱溶融性インク層、５・・・無インク層部分。 １−　耐熱層（鰍ｆ！、遥明） ？−フィルム状基材（鋏Ｉ！逓明） ３−　マット層（着色層） １０−−一熱転写フィルム 第２図Fig. 1 is a partially enlarged sectional view showing the schematic structure of a thermal transfer film according to an embodiment of the present invention, Fig. 2 is a plan view showing a part of the same film, and Fig. 3 is a schematic structure of a conventional thermal transfer film. FIG. 4 is a plan view showing two parts of the same film. 10... Heat transfer film, 1... Heat resistant layer, 2...
Film-like base material, 3... Matte layer (colored layer), 4...
- Heat-melting ink layer, 5... ink-free layer portion. 1- Heat resistant layer (F!, Haruaki)? -Film-like base material (scissors I!Dimei) 3-Matte layer (colored layer) 10--1 Thermal transfer film Figure 2

Claims (1)

【特許請求の範囲】[Claims] 熱溶融性インク層をフィルム状基材に積層してなる熱転
写フィルムであって、上記インク層と同色系の着色層を
備えた熱転写フィルム。A thermal transfer film formed by laminating a heat-melting ink layer on a film-like base material, the thermal transfer film comprising a colored layer having the same color as the ink layer.
JP63046288A 1988-02-29 1988-02-29 Thermal transfer film Pending JPH01218886A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63046288A JPH01218886A (en) 1988-02-29 1988-02-29 Thermal transfer film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63046288A JPH01218886A (en) 1988-02-29 1988-02-29 Thermal transfer film

Publications (1)

Publication Number Publication Date
JPH01218886A true JPH01218886A (en) 1989-09-01

Family

ID=12743028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63046288A Pending JPH01218886A (en) 1988-02-29 1988-02-29 Thermal transfer film

Country Status (1)

Country Link
JP (1) JPH01218886A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0774357A1 (en) * 1995-11-09 1997-05-21 Fuji Photo Film Co., Ltd. Thermal recording films and method of thermal image recording using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144393A (en) * 1984-12-18 1986-07-02 Dainippon Printing Co Ltd Heat sensitive transfer sheet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144393A (en) * 1984-12-18 1986-07-02 Dainippon Printing Co Ltd Heat sensitive transfer sheet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0774357A1 (en) * 1995-11-09 1997-05-21 Fuji Photo Film Co., Ltd. Thermal recording films and method of thermal image recording using the same
US6081288A (en) * 1995-11-09 2000-06-27 Fuji Photo Film Co., Ltd. Thermal recording films and method of thermal image recording using the same

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