JPS63122592A - Thermal transfer sheet - Google Patents
Thermal transfer sheetInfo
- Publication number
- JPS63122592A JPS63122592A JP61267630A JP26763086A JPS63122592A JP S63122592 A JPS63122592 A JP S63122592A JP 61267630 A JP61267630 A JP 61267630A JP 26763086 A JP26763086 A JP 26763086A JP S63122592 A JPS63122592 A JP S63122592A
- Authority
- JP
- Japan
- Prior art keywords
- thermal transfer
- layer
- resin
- transfer sheet
- white pigment
- 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
- 238000012546 transfer Methods 0.000 title claims abstract description 78
- 239000012463 white pigment Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 24
- 239000011347 resin Substances 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 229920001225 polyester resin Polymers 0.000 claims abstract description 6
- 239000004645 polyester resin Substances 0.000 claims abstract description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 125000004185 ester group Chemical group 0.000 abstract description 2
- 239000000975 dye Substances 0.000 description 19
- 238000001454 recorded image Methods 0.000 description 19
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000000859 sublimation Methods 0.000 description 9
- 230000008022 sublimation Effects 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 238000012937 correction Methods 0.000 description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 229920002050 silicone resin Polymers 0.000 description 4
- 229920006122 polyamide resin Polymers 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229940081735 acetylcellulose Drugs 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 238000005092 sublimation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
〔産業上の利用分野〕
本発明は熱転写プリンタに使用する熱転写シートに係り
、特に、染料の熱による昇華現象を利用して熱転写され
た記録を修正、あるいは、消去して再熱転写記録を可能
にする熱転写シートに関する。
〔従来の技術〕
従来より、サーマルヘッド等の熱により昇華又は気化す
る染料（昇華性染料と記す）をインク層中に含有する熱
転写シートを用いて、被記録紙上に電気信号を介して所
望の画像等を記録する染料昇華方式（昇華型と記す）の
熱転写プリンタが実現されている。そのような熱転写プ
リンタの例は特開昭５７−１６９３７０号公報に記載さ
れたものなどがある。この昇華型熱転写プリンタの被記
録紙は基紙の上に昇華性染料により染色され易い樹脂の
層を設けた特殊な被記録紙が一般に用いられており。
この樹脂層中に昇華性染料を含む熱転写シートから熱に
より昇華性染料を転写させて記録が行われている。
〔発明が解決しようとする問題点〕
しかし、従来のこのような熱転写シートと被記録紙を用
いた記録では、記録を間違った場合、記録が気に入らな
かった場合、記録を抹消したい場合など修正や消去を行
うことができなかった。
本発明の目的はこれらの問題を解決して、昇華型熱転写
記録で修正や消去が可能な熱転写シートを提供すること
にある。
熱転写記録には昇華型の他に、熱により溶融するインク
を用いた溶融型の熱転写記録がある。この溶融型の熱転
写記録では、既に修正・消去可能な技術が発明されてい
る１例えば、特開昭５９−２２４３９１号公報や特開昭
６０−２５５４８９号公報に記載された発明がある。こ
れらは白色顔料を含有する熱溶融性物質を記録像の上に
熱溶融転写して消去を行い、その上に熱溶融性インクを
再転写して修正を行うものである。この白色顔料含有熱
溶融性物質層を昇華型記録像の上に熱転写しても、消去
はできるが、修正・再熱転写記録は困難である。それは
一つには熱溶融性物質が必ずしも昇華性染料により染色
される訳ではなく、たとえ、昇華性染料により染色され
易い熱溶融性物質を用いたとしても、昇華性染料を熱転
写時にこの熱溶性物質が溶融してしまい鮮明な記録が得
られない、また、サーマルヘッドの熱により溶融する物
質は常温ではワックス状で軟かく、耐擦性が低く記録画
像の堅牢性に劣る欠点がある。さらに、昇華性染料は熱
転写時に染着層中に拡散していくため、記録像上に隠蔽
積層された熱溶融性物質層中に白色顔料が均質に分散さ
れていると、昇華性染料が熱溶性物質層の奥深くまで拡
散して、その中に分散されている白色顔料のせいで、濃
度の高い鮮明な記録が得られない。
〔問題点を解決するための手段〕
本発明の目的は基体上に白色顔料と昇華性染料に染色さ
れ易い樹脂を含む熱転写可能な層を設け、この層を記録
像の修正箇所、あるいは、全面に熱転写することにより
達成される。この層を基体上全面に設けた消去・修正専
用の熱転写シートとしてもよいし１通常のインク層をも
つ熱転写シートの一部分にこの熱転写層を設けてもよい
。
この熱転写層は基体に近い部分が軟化温度が５０℃以上
２５０℃以下の、昇華性染料により染色され易い樹脂、
表面に近い部分が白色顔料を含有する軟化温度が５０℃
以上２５０℃以下の熱転写性物質から構成されていると
、この層を記録像上に熱転写して隠蔽消去したのち、そ
の層に昇華性染料を熱転写して再記録する時１元の記録
と同様に鮮明な記録を得ることができるので好ましい。
基体とこの熱転写層との間に離型層を設けると、熱転写
層の記録像への転写性が非常に良好になるのでより好ま
しくなる。
次に１本発明の熱転写シートに具体的に用いられる材料
について説明する。基体としてはコンデンサ紙などの薄
葉紙、あるいは、ポリエステル。
ポリイミド、ポリカーボネイト、アセチルセルロースな
どのプラスチックシートを用いることができる。また、
必要に応じて基体のサーマルヘッド接触面にサーマルヘ
ッドと基体の熱融着を防止する層、例えば、シリコーン
樹脂、メラミン樹脂等の耐熱性の高い樹脂層を設けても
よい、昇華性染料に染色され易い樹脂はエステル基をも
つ樹脂が好適で、特に、ポリエステル樹脂が最も好適で
ある。白色顔料は酸化チタン、酸化マグネシウム。
炭酸カルシウム、硫酸カルシウムなどの白色度が高く、
安価であるので好ましい、白色顔料を分散し、結着する
樹脂には軟化温度が５０℃以上２５０℃以下の樹脂であ
ればほとんどの樹脂が使用可能である。ポリエステル樹
脂も使用可能であるが、むしろ、ポリエステルよりは昇
華性染料に染色され難い樹脂１例えば、ポリアミド樹脂
等を使用することが好ましい、離型層を構成する物質と
しては、シリコーン樹脂等が好ましい。
〔実施例〕
以下１本発明の実施例を図面を用いて説明する。
第１図は本発明の熱転写シートの一実施例の断面図を示
したものである。基体１及び、基体１上に昇華性染料に
より染色され易い熱転写性の樹脂の層（染色層）２と、
その上に、さらに、白色顔料５が分散した熱転写性の樹
脂層３を設けた熱転写層４とから構成されている。第２
図は本発明の熱、転写シートの他の実施例の断面図であ
る。基体１上に離型層６が設けられ、その上に熱転写性
の染色層２と、さらに、その上の白色顔料５を含有する
熱転写性の樹脂層３から構成される熱転写層４が設けら
れる。これらは本発明の典型的な構成を示したもので、
特に、これらに限定されるものではない、染色層と白色
顔料含有層の境界が図面のように明確でなく、互いに混
じりあっていてもよいし、あるいは熱転写層４中に紫外
線吸収剤などの第三の添加物が含有されていてもよい。
〈実施例１〉
基体として片面に熱硬化したシリコーン樹脂（信越シリ
コーンＫＳ−７７２）の層を約１μｍの厚さに設けた厚
さ６μｍのポリエチレンテレフタレートシート（帝人！
！１）の他面に、軟化温度１０２℃のポリエステル樹脂
（花生石鹸、ＡＴＲ２００５）３重量部をテトラヒドラ
フラン７重量部に溶解して塗布し、乾燥して約厚さ５μ
ｍの染色層を設けた６次に、軟化温度約１１０℃のポリ
アミド樹脂（日本ヘンケル、パーサロン９３０）２重景
部をトルエンとイソプロピルアルコール−対−重量比の
混合溶剤７重量部に溶解させ、この溶液に平均粒程約１
μｍの酸化チタン粉末をよく分散させた液を染色層の上
に塗布、乾燥して厚さ約５μｍの白色顔料含有層を形成
した。
次に、この熱転写シートを用いて昇華型熱転写記録像を
隠蔽消去して、その熱転写隠蔽層上に再熱転写記録を行
う試験を試みた。熱転写プリンタは抵抗値２１０Ωの発
熱抵抗体素子を６本／ｌｌｌ１１の密度でライン状に多
数もつサーマルヘッドを用い。
ヘッド印加電圧７．Ｏｖの条件で記録を行った。
記録をするための熱転写インクシート及び被記録紙とし
てはイエロー、マゼンタ、シアンの三色の昇華性染料を
含有する日立カラービデオプリンタ用ペーパインクセッ
トＶＹ−８１００を用いた。
これらを用いて被記録紙上にサーマルヘッドの一ライン
あたりの通電時間を種々変化させて、各種の色の記録像
を作製した。これらの記録像の全面に前述の熱転写プリ
ンタと本実施例の熱転写シートを用いて印加電圧７．Ｏ
Ｖ 、−ラインあたりの通電時間２Ｑｍｓａｃの条件で
熱転写を行ったところ、記録像は本実施例の熱転写シー
トの熱転写層が全面に、しかも、均質に転写されて隠蔽
され、前に記録した画像を全く判別することができなか
った。
次に、この隠蔽された被記録紙と前述の熱転写インクシ
ートを用いて同様にして記録を行ったところ、隠蔽消去
前と同様に鮮明なカラー記録を行うことができた、隠蔽
前の記録と隠蔽後、隠蔽層に行った記録における各色の
通電時間２０ｍ５ｅｃの時の光学濃度を第１表に示した
。光学濃度は両者の間はとんど差がなく、再記録も初め
の記録と変わりなく行うことができる。
第１表
〈実施例２〉
実施例１で用いたシリコーン樹脂層相の基体のシリコー
ン樹脂が設けられていない面に離型層としてシリコーン
の１０ｗｔ％トルエン溶液（信越シリコーンＫＳ−７７
２）１０重量部と硬化触媒として塩化白金酸触媒０．５
％溶液（信越シリコーンＰＬ−３）０．５重量部を混合
した液を塗布し、乾燥後８０〜１００℃の温度で三分間
加熱処理してシリコーン樹脂の層（厚さ約０．３μｍ）
を形成した０次に、この離型層の上に軟化温度１５８℃
のポリエステル樹脂（東洋紡バイロン１０３）３重量部
をテトラヒドロフラン７重量部に溶解した溶液を塗布、
乾燥して厚さ５μｍの樹脂層を形成した。さらに、この
上に軟化温度約１１０℃のポリアミド樹脂（日本ヘンケ
ル、パーサロン９４０）２ｆｆｌ量部をトルエンとイソ
プロピルアルコール一対−重量比の混合溶剤７重量部に
溶解し、この溶液に平均粒径約１μｍの酸化マグネシウ
ム粉末をよく分散させた液を塗布、乾燥して厚さ５μｍ
の白色顔料層を形成した。
実施例１と同様にして作製した昇華性染料を転写された
記録像の上に、実施例１と同様にして本発明の熱転写層
を転写したところ、離形層があるので非常にスムーズに
、実施例１よりも均質に熱転写層が転写され、しかも、
その熱転写層に隠蔽された記録像は全く読み取ることが
できなかった。
この隠蔽層の上にさらに実施例１と同様にして熱転写記
録を行ったところ、隠蔽前と同様に鮮明な記録をするこ
とができた。隠蔽前の記録と隠蔽後隠蔽層に行った記録
における各色の通電時間２０ｍ ｓｅｃの時の光学濃度
を第１表に併記した。初めに用いた被記録紙に行われた
記録と、白色顔料をもつ熱転写層をその上に熱転写隠蔽
後に行われた記録とではほとんどその記録像の光学濃度
が変化しておらず、消去後の再記録も、初めの記録と変
わりなく行えることがわかる。
〈実施例３〉
実施例１において、実施例１の熱転写シートを記録像の
上に熱転写して熱転写層を隠蔽し、その上に再記録した
後、さらにその上にもう一度実施例１の熱転写シートを
熱転写したところ、その熱転写層により再び記録が判別
不能になった。この上にさらに実施例１の熱転写インク
シートを用いて記録を行ったところ、一番初めの記録と
同じ鮮明な記録像を得ることができた。このように本発
明の熱転写シートを用いると、何度でも隠蔽消去。
再記録を繰り返すことができた。[Industrial Application Field] The present invention relates to a thermal transfer sheet used in a thermal transfer printer, and particularly to a thermal transfer sheet that uses the sublimation phenomenon of dye due to heat to correct or erase thermally transferred records to enable re-thermal transfer recording. The present invention relates to a thermal transfer sheet. [Prior Art] Conventionally, a thermal transfer sheet containing a dye (referred to as a sublimable dye) that sublimes or vaporizes by the heat of a thermal head or the like in its ink layer is used to print a desired image onto a recording paper via an electrical signal. A thermal transfer printer using a dye sublimation method (referred to as a sublimation type) for recording images, etc. has been realized. An example of such a thermal transfer printer is the one described in Japanese Unexamined Patent Publication No. 169370/1983. The recording paper for this sublimation type thermal transfer printer is generally a special recording paper in which a resin layer that is easily dyed with a sublimation dye is provided on a base paper. Recording is performed by transferring the sublimable dye using heat from a thermal transfer sheet containing the sublimable dye in the resin layer. [Problems to be solved by the invention] However, with conventional recording using such a thermal transfer sheet and recording paper, it is difficult to make corrections if you make a mistake, do not like the recording, or want to erase the recording. Unable to perform deletion. An object of the present invention is to solve these problems and provide a thermal transfer sheet that can be corrected and erased by sublimation type thermal transfer recording. In addition to sublimation type thermal transfer recording, there is also melting type thermal transfer recording using ink that melts with heat. In this melt-type thermal transfer recording, techniques that allow correction and erasing have already been invented. For example, there are inventions described in Japanese Patent Laid-Open No. 59-224391 and Japanese Patent Laid-Open No. 60-255489. These erase images by thermally transferring a hot-melt material containing a white pigment onto a recorded image, and then retransferring a hot-melt ink onto the recorded image to make corrections. Even if this white pigment-containing heat-fusible material layer is thermally transferred onto a sublimation type recorded image, it can be erased, but correction and reheat transfer recording are difficult. One reason is that heat-fusible substances are not necessarily dyed with sublimable dyes, and even if a heat-fusible substance that is easily dyed by sublimable dyes is used, this heat-soluble substance is The material melts, making it impossible to obtain a clear record, and the material melted by the heat of the thermal head is wax-like and soft at room temperature, resulting in low abrasion resistance and poor solidity of recorded images. Furthermore, sublimable dyes diffuse into the dyed layer during thermal transfer, so if the white pigment is homogeneously dispersed in the heat-fusible material layer concealed over the recorded image, the sublimable dyes will diffuse into the dyed layer during thermal transfer. Because of the white pigment that has diffused deep into the soluble material layer and is dispersed within it, it is not possible to obtain a clear record with high concentration. [Means for Solving the Problems] The object of the present invention is to provide a thermally transferable layer containing a white pigment and a resin that is easily dyed with a sublimable dye on a substrate, and to apply this layer to the corrected portion of the recorded image or to the entire surface. This is accomplished by thermal transfer. This layer may be provided on the entire surface of the substrate as a thermal transfer sheet exclusively for erasing and correction, or it may be provided on a portion of a thermal transfer sheet having a normal ink layer. This thermal transfer layer consists of a resin whose softening temperature is 50°C or higher and 250°C or lower, and which is easily dyed with sublimable dyes, in the portion close to the substrate.
The softening temperature at which the part near the surface contains white pigment is 50°C.
If the layer is composed of a thermally transferable material with a temperature of 250°C or less, after this layer is thermally transferred onto the recorded image for concealment and erasing, sublimation dye is thermally transferred to the layer and re-recorded in the same manner as the original recording. This is preferable because clear records can be obtained. It is more preferable to provide a release layer between the substrate and the thermal transfer layer because the transferability of the thermal transfer layer to the recorded image becomes very good. Next, materials specifically used for the thermal transfer sheet of the present invention will be explained. The base material is thin paper such as capacitor paper, or polyester. Plastic sheets such as polyimide, polycarbonate, acetylcellulose, etc. can be used. Also,
If necessary, a layer to prevent heat fusion between the thermal head and the substrate may be provided on the thermal head contact surface of the substrate, for example, a highly heat-resistant resin layer such as silicone resin or melamine resin. Dyed with sublimable dye. As the resin that is easily oxidized, a resin having an ester group is preferable, and a polyester resin is particularly preferable. The white pigments are titanium oxide and magnesium oxide. High whiteness of calcium carbonate, calcium sulfate, etc.
Most resins can be used as the resin for dispersing and binding the white pigment, which is preferred because it is inexpensive, as long as it has a softening temperature of 50° C. or higher and 250° C. or lower. Although polyester resins can also be used, it is preferable to use resins that are less easily dyed with sublimable dyes than polyesters, such as polyamide resins. Silicone resins are preferable as the material constituting the release layer. . [Example] An example of the present invention will be described below with reference to the drawings. FIG. 1 shows a sectional view of one embodiment of the thermal transfer sheet of the present invention. a base 1; a layer (dyed layer) 2 of a heat-transferable resin that is easily dyed with a sublimable dye on the base 1;
It further comprises a thermal transfer layer 4 on which a thermal transferable resin layer 3 in which a white pigment 5 is dispersed is provided. Second
The figure is a sectional view of another embodiment of the thermal transfer sheet of the present invention. A release layer 6 is provided on the substrate 1, and a thermal transfer layer 4 comprising a thermally transferable dyeing layer 2 and a thermally transferable resin layer 3 containing a white pigment 5 thereon is provided. . These show typical configurations of the present invention.
In particular, but not limited to these, the boundary between the dyed layer and the white pigment-containing layer may not be clear as shown in the drawings, and they may be mixed with each other, or the thermal transfer layer 4 may contain a layer such as an ultraviolet absorber. Three additives may be included. <Example 1> A 6 μm thick polyethylene terephthalate sheet (Teijin!) with a layer of thermoset silicone resin (Shin-Etsu Silicone KS-772) approximately 1 μm thick on one side as a substrate.
! 1) On the other side, apply 3 parts by weight of polyester resin (Flower Soap, ATR2005) with a softening temperature of 102°C dissolved in 7 parts by weight of tetrahydrofuran, and dry to a thickness of approximately 5 μm.
Next, a polyamide resin (Persalon 930, manufactured by Henkel Japan) with a softening temperature of about 110° C. was dissolved in 7 parts by weight of a mixed solvent of toluene and isopropyl alcohol in a weight ratio of The average size of particles in this solution is about 1
A solution in which titanium oxide powder of .mu.m in thickness was well dispersed was applied onto the dyed layer and dried to form a white pigment-containing layer with a thickness of about 5 .mu.m. Next, a test was conducted in which the sublimation type thermal transfer recorded image was hidden and erased using this thermal transfer sheet, and then thermal transfer recording was performed again on the thermal transfer concealing layer. The thermal transfer printer uses a thermal head that has a large number of heating resistor elements with a resistance value of 210Ω arranged in a line at a density of 6/11. Head applied voltage7. Recording was performed under Ov conditions. A paper ink set VY-8100 for Hitachi color video printers containing sublimable dyes of yellow, magenta, and cyan was used as a thermal transfer ink sheet and recording paper for recording. Using these, recorded images of various colors were produced on recording paper by varying the current application time per line of the thermal head. Apply voltage 7. to the entire surface of these recorded images using the thermal transfer printer described above and the thermal transfer sheet of this example. O
When thermal transfer was carried out under the conditions of 2Qmsac of current application time per line, the recorded image was covered by the thermal transfer layer of the thermal transfer sheet of this example being transferred over the entire surface and uniformly, concealing the previously recorded image. I couldn't tell it apart at all. Next, when recording was performed in the same manner using this concealed recording paper and the aforementioned thermal transfer ink sheet, it was possible to make clear color recordings similar to those before concealment and erasure. Table 1 shows the optical densities of each color when the current was applied for 20 m5 ec during recording on the hiding layer after hiding. There is almost no difference in optical density between the two, and re-recording can be performed with no difference from the initial recording. Table 1 <Example 2> A 10 wt% toluene solution of silicone (Shin-Etsu Silicone KS-77
2) 10 parts by weight and 0.5 chloroplatinic acid catalyst as curing catalyst
% solution (Shin-Etsu Silicone PL-3) mixed with 0.5 parts by weight was applied, and after drying, heat treatment was performed at a temperature of 80 to 100°C for 3 minutes to form a silicone resin layer (approximately 0.3 μm thick).
Next, a softening temperature of 158°C was applied on this release layer.
A solution of 3 parts by weight of polyester resin (Toyobo Byron 103) dissolved in 7 parts by weight of tetrahydrofuran was applied.
It was dried to form a resin layer with a thickness of 5 μm. Further, on top of this, 2 ffl parts of a polyamide resin (Persalon 940, manufactured by Henkel Japan) with a softening temperature of about 110°C was dissolved in 7 parts by weight of a mixed solvent of toluene and isopropyl alcohol in a 1:1 weight ratio, and the average particle size was about 1 μm. A well-dispersed solution of magnesium oxide powder is applied and dried to a thickness of 5 μm.
A white pigment layer was formed. When the thermal transfer layer of the present invention was transferred in the same manner as in Example 1 onto the recorded image to which the sublimable dye prepared in the same manner as in Example 1 was transferred, it was transferred very smoothly because of the release layer. The thermal transfer layer was transferred more uniformly than in Example 1, and
The recorded image hidden by the thermal transfer layer could not be read at all. When thermal transfer recording was further carried out on this hiding layer in the same manner as in Example 1, it was possible to make clear recordings similar to those before hiding. Table 1 also shows the optical densities of each color when the current was applied for 20 msec in the recording before concealment and the recording performed on the concealing layer after concealment. There is almost no change in the optical density of the recorded image between the recording made on the recording paper used initially and the recording made after the thermal transfer layer with white pigment was placed on top of it after the thermal transfer concealment. It can be seen that re-recording can be performed in the same way as the initial recording. <Example 3> In Example 1, the thermal transfer sheet of Example 1 was thermally transferred onto the recorded image to hide the thermal transfer layer, and after re-recording was performed on it, the thermal transfer sheet of Example 1 was applied again on top of it. When thermally transferred, the recording became indistinguishable again due to the thermal transfer layer. When further recording was performed using the thermal transfer ink sheet of Example 1, it was possible to obtain a clear recorded image that was the same as the first recording. When the thermal transfer sheet of the present invention is used in this way, it can be concealed and erased any number of times. I was able to repeat the recording.
本発明によれば、記録済の画像を隠蔽消去することがで
き、その後、さらに再記録することかできる。また、同
−被記録上でこの消去・再記録を繰り返して行うことが
できる。According to the present invention, a recorded image can be concealed and erased, and then it can be further recorded. Further, this erasing and re-recording can be repeated on the same recording target.
第１図は本発明の一実施例の熱転写シートの断面図、第
２図は本発明の他の実施例の熱転写シートの断面図であ
る。FIG. 1 is a cross-sectional view of a thermal transfer sheet according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view of a thermal transfer sheet according to another embodiment of the present invention.
Claims (1)
層から成る熱転写シートにおいて、 白色顔料を含有する前記熱転写可能な物質層が前記基体
の一部又は全面に設けられていることを特徴とする熱転
写シート。 ２、前記白色顔料を含有する前記熱転写可能な物質層が
さらに昇華性染料により染色され易い物質を含有するこ
とを特徴とする特許請求の範囲第１項記載の熱転写シー
ト。 ３、前記白色顔料と前記昇華性染料により染色され易い
物質を含有する前記熱転写可能な物質層が、前記基体の
近傍は前記昇華性染料により染色され易い物質で構成さ
れ、表面近傍は前記白色顔料を含む物質で構成されてい
ることを特徴とする特許請求の範囲第２項記載の熱転写
シート。 ４、前記基体と前記白色顔料を含有する熱転写可能な物
質層の間に離型層を設けたことを特徴とする特許請求の
範囲第３項記載の熱転写シート。 ５、前記熱転写可能な物質層が少なくとも前記白色顔料
と軟化温度５０℃以上２５０℃以下の樹脂から構成され
ることを特徴とする特許請求の範囲第３項または第４項
記載の熱転写シート。 ６、前記昇華性染料により染色され易い物質がエステル
結合をもつ樹脂であることを特徴とする特許請求の範囲
第５項記載の熱転写シート。 ７、前記エステル結合をもつ樹脂がポリエステル樹脂で
あることを特徴とする特許請求の範囲第６項記載の熱転
写シート。 ８、前記白色顔料が酸化チタン、酸化マグネシウム、炭
酸カルシウム、硫酸カルシウムの少なくとも一種から選
ばれることを特徴とする特許請求の範囲第１項、第２項
、第３項、第４項、第５項、第６項または第７項に記載
の熱転写シート。 ９、前記白色顔料を含む熱転写可能な物質層が基体の全
面に設けられていることを特徴とする特許請求の範囲第
１項、第２項、第３項、第４項、第５項、第６項、第７
項または第８項に記載の熱転写シート。 １０、前記白色顔料を含む熱転写可能な物質層が前記基
体上で前記昇華性染料を含有する熱転写可能なインク層
の隣接面に設けられていることを特徴とする特許請求の
範囲第１項、第２項、第３項、第４項、第５項、第６項
、第７項または第８項に記載の熱転写シート。[Claims] 1. A thermal transfer sheet comprising a substrate and a thermally transferable material layer provided on the substrate, wherein the thermally transferable material layer containing a white pigment is provided on a part or the entire surface of the substrate. A thermal transfer sheet characterized by: 2. The thermal transfer sheet according to claim 1, wherein the thermal transferable material layer containing the white pigment further contains a material that is easily dyed with a sublimable dye. 3. The thermally transferable material layer containing the white pigment and a substance that is easily dyed by the sublimable dye is composed of a substance that is easily dyed by the sublimable dye in the vicinity of the substrate, and the white pigment in the vicinity of the surface. The thermal transfer sheet according to claim 2, characterized in that it is made of a substance containing. 4. The thermal transfer sheet according to claim 3, characterized in that a release layer is provided between the substrate and the thermally transferable material layer containing the white pigment. 5. The thermal transfer sheet according to claim 3 or 4, wherein the thermal transferable material layer is composed of at least the white pigment and a resin having a softening temperature of 50° C. or more and 250° C. or less. 6. The thermal transfer sheet according to claim 5, wherein the substance that is easily dyed by the sublimable dye is a resin having an ester bond. 7. The thermal transfer sheet according to claim 6, wherein the resin having ester bonds is a polyester resin. 8. Claims 1, 2, 3, 4, and 5, wherein the white pigment is selected from at least one of titanium oxide, magnesium oxide, calcium carbonate, and calcium sulfate. The thermal transfer sheet according to item 6 or 7. 9. Claims 1, 2, 3, 4, and 5, characterized in that the thermally transferable material layer containing the white pigment is provided on the entire surface of the substrate. Section 6, Section 7
The thermal transfer sheet according to item or item 8. 10. Claim 1, wherein the thermally transferable material layer containing the white pigment is provided on the substrate adjacent to the thermally transferable ink layer containing the sublimable dye. The thermal transfer sheet according to item 2, 3, 4, 5, 6, 7, or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61267630A JPS63122592A (en) | 1986-11-12 | 1986-11-12 | Thermal transfer sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61267630A JPS63122592A (en) | 1986-11-12 | 1986-11-12 | Thermal transfer sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63122592A true JPS63122592A (en) | 1988-05-26 |
Family
ID=17447350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61267630A Pending JPS63122592A (en) | 1986-11-12 | 1986-11-12 | Thermal transfer sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63122592A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5464723A (en) * | 1993-05-07 | 1995-11-07 | Minnesota Mining And Manufacturing Company | Mass transferable donor ribbons for use in thermal dye transfer imaging |
| EP0781668A3 (en) * | 1995-12-26 | 1997-09-24 | Dainippon Printing Co Ltd | Thermal transfer sheet having a white transfer layer and recording method using the sheet |
| WO2001017792A1 (en) * | 1999-09-09 | 2001-03-15 | American Coating Technology, Inc. | Method of image transfer to a colored base |
| US9227461B2 (en) | 2004-02-10 | 2016-01-05 | Mj Solutions Gmbh | Image transfer material and polymer composition |
| US9669618B2 (en) | 1999-06-01 | 2017-06-06 | Arkwright Advanced Coating, Inc. | Ink-jet transfer system for dark textile substrates |
-
1986
- 1986-11-12 JP JP61267630A patent/JPS63122592A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5464723A (en) * | 1993-05-07 | 1995-11-07 | Minnesota Mining And Manufacturing Company | Mass transferable donor ribbons for use in thermal dye transfer imaging |
| EP0781668A3 (en) * | 1995-12-26 | 1997-09-24 | Dainippon Printing Co Ltd | Thermal transfer sheet having a white transfer layer and recording method using the sheet |
| US9669618B2 (en) | 1999-06-01 | 2017-06-06 | Arkwright Advanced Coating, Inc. | Ink-jet transfer system for dark textile substrates |
| WO2001017792A1 (en) * | 1999-09-09 | 2001-03-15 | American Coating Technology, Inc. | Method of image transfer to a colored base |
| US6884311B1 (en) | 1999-09-09 | 2005-04-26 | Jodi A. Dalvey | Method of image transfer on a colored base |
| US9776389B2 (en) | 1999-09-09 | 2017-10-03 | Jodi A. Schwendimann | Image transfer on a colored base |
| US9227461B2 (en) | 2004-02-10 | 2016-01-05 | Mj Solutions Gmbh | Image transfer material and polymer composition |
| US9718295B2 (en) | 2004-02-10 | 2017-08-01 | Mj Solutions Gmbh | Image transfer material and polymer composition |
| US10245868B2 (en) | 2004-02-10 | 2019-04-02 | Mj Solutions Gmbh | Image transfer material and polymer composition |
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