JPH0811466B2 - Transfer sheet - Google Patents
Transfer sheetInfo
- Publication number
- JPH0811466B2 JPH0811466B2 JP59272186A JP27218684A JPH0811466B2 JP H0811466 B2 JPH0811466 B2 JP H0811466B2 JP 59272186 A JP59272186 A JP 59272186A JP 27218684 A JP27218684 A JP 27218684A JP H0811466 B2 JPH0811466 B2 JP H0811466B2
- Authority
- JP
- Japan
- Prior art keywords
- transfer sheet
- dye
- transfer
- recording
- ink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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
- B41M5/385—Contact thermal transfer or sublimation processes characterised by the transferable dyes or pigments
- B41M5/3858—Mixtures of dyes, at least one being a dye classifiable in one of groups B41M5/385 - B41M5/39
-
- 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
- B41M5/385—Contact thermal transfer or sublimation processes characterised by the transferable dyes or pigments
- B41M5/3854—Dyes containing one or more acyclic carbon-to-carbon double bonds, e.g., di- or tri-cyanovinyl, methine
-
- 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
- B41M5/385—Contact thermal transfer or sublimation processes characterised by the transferable dyes or pigments
- B41M5/39—Dyes containing one or more carbon-to-nitrogen double bonds, e.g. azomethine
Description
【発明の詳細な説明】 発明の目的 イ）産業上の利用分野 本発明は、昇華型感熱転写記録に使用される転写シー
トに関する。DETAILED DESCRIPTION OF THE INVENTION A) Field of Industrial Application The present invention relates to a transfer sheet used for sublimation thermal transfer recording.
ロ）従来の技術 従来、フアクシミリプリンター、複写機あるいは、チ
レビ画像等をカラー記録する技術が要望され、電子写
真、インクジエツト、感熱転写等によるカラー記録技術
が検討されている。(B) Conventional technology Conventionally, there has been a demand for a technology for color recording a facsimile printer, a copying machine, or a Cilebi image, and a color recording technology such as electrophotography, ink jet, and thermal transfer has been studied.
感熱転写記録方式は、装置の保守や操作が容易で、装
置や消耗品が安価であるため、他の方法に比べ有利と考
えられる。The thermal transfer recording method is considered to be advantageous as compared with other methods because the apparatus is easy to maintain and operate and the apparatus and consumables are inexpensive.
感熱転写方式には、ベースフイルム上に熱溶融性イン
ク層を形成させた転写シートを、感熱ヘツドにより加熱
して、該インクを溶融し、被記録体上に転写記録する溶
融方式と、ベースフイルム上に昇華性色素を含有するイ
ンク層を形成させた転写シートを、感熱ヘツドにより加
熱して色素を昇華させ、被記録体上に転写記録する昇華
方式とがあるが、昇華方式は感熱ヘツドに与えるエネル
ギーを変えることにより色素の昇華転写量を制御するこ
とができるので、階調記録が容易となり、フルカラー記
録には特に有利と考えられる。The thermal transfer system includes a base film and a base film having a heat-meltable ink layer formed thereon. The transfer sheet is heated by a heat-sensitive head to melt the ink, and transfer recording is performed on a recording medium. There is a sublimation method in which a transfer sheet on which an ink layer containing a sublimable dye is formed is heated by a thermal head to sublimate the dye, and transfer recording is performed on a recording medium, but the sublimation method is a thermal head. Since the sublimation transfer amount of the dye can be controlled by changing the applied energy, gradation recording becomes easy, which is considered to be particularly advantageous for full-color recording.
昇華方式の感熱転写記録により黒色の記録を得るため
には、イエロー色、マゼンタ色およびシアン色を混合し
た転写シートを用いて転写記録を行なえば良いが、従
来、黒色の転写シートには充分な性能のものがなく、そ
の開発が要望されている。In order to obtain black recording by sublimation thermal transfer recording, transfer recording may be performed using a transfer sheet in which yellow, magenta and cyan colors are mixed, but conventionally, it is sufficient for black transfer sheet. There is no performance, and its development is desired.
ハ）発明が解決しようとする問題点 本発明は感熱記録ヘツドの作動条件で容易に昇華する
こと、イエロー色素・マゼンタ色素・シアン色素の各配
合色素の昇華性がよく合致していること、好ましい色相
を有すること、光・湿気・薬品などに対して安定なこと
等の条件を満足する記録の得られる黒色の転写シートを
提供しようとするものである。C) Problems to be Solved by the Invention The present invention is preferable because it easily sublimes under the operating conditions of the thermal recording head, and the sublimation properties of the yellow dye, magenta dye, and cyan dye are well matched. It is an object of the present invention to provide a black transfer sheet which can obtain a recording satisfying conditions such as having a hue and being stable against light, moisture and chemicals.
発明の構成 本発明は、一般式〔Ｉ〕、〔II〕および〔III〕で表
わされる昇華性色素を含有する色材層を有する感熱転写
記録用転写シートのその要旨とするものである。Structure of the Invention The present invention is the gist of a transfer sheet for thermal transfer recording having a coloring material layer containing a sublimable dye represented by the general formulas [I], [II] and [III].
（式中、Ｘ、Ｙは水素原子、メチル基を表わし、Ａは−
CO−、−COO−、−SO2−を表わし、R1、R2、R3、R4、
R5、R6は水素原子、置換もしくは非置換のアルキル基を
表わす。R7はメトキシ基で置換されていてもよい炭素数
１〜４のアルキル基を表わす。） 本発明において特に好ましく前記一般式〔１〕〜〔II
I〕におけるR1、R2、R3、R4、R5及びR6がそれぞれ炭素
数１〜６のアルキル基又は炭素数７〜９のフェニルアル
キル基で表わされる色素を使用することである。 (In the formula, X and Y represent a hydrogen atom and a methyl group, and A is-.
CO -, - COO -, - SO 2 - represents, R 1, R 2, R 3, R 4,
R 5 and R 6 represent a hydrogen atom or a substituted or unsubstituted alkyl group. R 7 represents an alkyl group having 1 to 4 carbon atoms which may be substituted with a methoxy group. In the present invention, the above-mentioned general formulas [1] to [II] are particularly preferable.
I] is a dye in which R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are each an alkyl group having 1 to 6 carbon atoms or a phenylalkyl group having 7 to 9 carbon atoms. .
本発明の黒色の転写シートは、前記一般式〔Ｉ〕で表
わされるイエロー色素、前記一般式〔II〕で表わされる
マゼンタ色素および前記一般式〔III〕で表わされるシ
アン色素を任意の割合で配合することによつて得られる
が、好ましくはそれぞれの分子吸光係数および昇華性を
考慮し、得られる記録の色濃度を合致させるように配合
することによつて製造することができる。The black transfer sheet of the present invention contains the yellow dye represented by the general formula [I], the magenta dye represented by the general formula [II], and the cyan dye represented by the general formula [III] at any ratio. However, it can be preferably produced by blending so as to match the color density of the obtained record, taking into consideration the respective molecular extinction coefficients and sublimability.
各色素の配合比率はイエロー色素10〜50％、マゼンタ
色素10〜50、シアン色素30〜80％が適当であり特に好ま
しい配合比率はイエロー色素18〜28％、マゼンタ色素18
〜28％、シアン色素50〜65％である。The appropriate mixing ratio of each dye is yellow dye 10 to 50%, magenta dye 10 to 50, cyan dye 30 to 80%, and particularly preferable mixing ratio is yellow dye 18 to 28%, magenta dye 18
~ 28%, cyan dye 50-65%.
転写シート作製のためには上記配合色素を結着剤とと
もに媒体中に溶解あるいは微粒子状に分散させることに
よりインキを調製し、該インキをベースフイルム上に塗
布し、乾燥させれば良い。In order to prepare a transfer sheet, an ink may be prepared by dissolving or dispersing fine particles of the above-described dye in a medium together with a binder, coating the ink on a base film, and drying.
インク調製のための結着剤としては、セルロース系、
アクリル酸系、でんぷん系などの水溶性樹脂、アクリル
樹脂、メタクリル樹脂、ポリスチレン、ポリカーボネー
ト、ポリスルホン、ポリエーテルスルホン、エチルセル
ロースなどの有機溶剤に可溶性の樹脂などを挙げること
ができる。有機溶剤可溶性の樹脂の場合有機溶剤溶液と
してのみならず水性分散液の形で使用することも可能で
ある。As a binder for preparing the ink, cellulose-based,
Examples thereof include acrylic acid-based and starch-based water-soluble resins, acrylic resins, methacrylic resins, polystyrene, polycarbonate, polysulfone, polyether sulfone, ethyl cellulose, and other organic solvent-soluble resins. In the case of an organic solvent-soluble resin, it can be used not only as an organic solvent solution but also as an aqueous dispersion.
インク調製のための媒体としては水の他に、メチルア
ルコール、イソプロピルアルコール、イソブチルアルコ
ールなどのアルコール類、メチルセロソルブ、エチルセ
ロソルブなどのセロソルブ類、トルエン、キシレン、ク
ロロベンゼンなどの芳香族類、酢酸エチル、酢酸ブチル
などのエステル類、アセトン、メチルエチルケトン、メ
チルイソブチルケトン、シクロヘキサノンなどのケトン
類、塩化メチレン、クロロホルム、トリクロロエチレン
などの塩素系溶剤、テトラヒドロフラン、ジオキサンな
どのエーテル類、N,N−ジメチルホルムアミド、Ｎ−メ
チルピロリドンなどの有機溶剤を挙げることができる。As a medium for preparing the ink, in addition to water, alcohols such as methyl alcohol, isopropyl alcohol and isobutyl alcohol, cellosolves such as methyl cellosolve and ethyl cellosolve, aromatics such as toluene, xylene and chlorobenzene, ethyl acetate, Esters such as butyl acetate, ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; chlorinated solvents such as methylene chloride, chloroform and trichloroethylene; ethers such as tetrahydrofuran and dioxane; N, N-dimethylformamide; Organic solvents such as methylpyrrolidone can be mentioned.
転写シート作製のためのインクを塗布するベースフイ
ルムとしては、コンデンサー紙、グラミン紙のような薄
葉紙、ポリエステル、ポリアミド、ポリイミドのような
耐熱性の良好なプラスチツクのフイルムが適している。
また、該ベースフイルムの厚さとしては、３〜50μｍの
範囲を挙げることができる。As the base film to which the ink is applied for preparing the transfer sheet, thin film such as condenser paper and gramine paper, and plastic film having good heat resistance such as polyester, polyamide and polyimide are suitable.
The thickness of the base film may be in the range of 3 to 50 μm.
インクをベースフィルムに塗布する方法としては、リ
バースロールコーター、グラビアコーター、ロツドコー
ター、エアドクタコーターなどを使用して実施すること
ができ、インクの塗布層の厚さは乾燥後、0.1〜５μｍ
の範囲となるよう塗布すれば良い（原崎勇次、「コーテ
イング方式」（1979）槙書店）。The method for applying the ink to the base film can be carried out using a reverse roll coater, a gravure coater, a rod coater, an air doctor coater, etc., and the thickness of the ink coating layer is 0.1 to 5 μm after drying.
It can be applied so that it falls within the range (Yuji Harasaki, "Coating Method" (1979) Maki Shoten).
発明の作用及び効果 我々は、種々の色素について検討を行なつた結果、前
記の一般式〔Ｉ〕、〔II〕および〔III〕で表わされる
配合色素を用いることにより、色調および堅牢性の良好
な黒色の転写記録が得られることを見い出した。Action and Effect of the Invention As a result of studies on various dyes, as a result of using the compounded dyes represented by the general formulas [I], [II] and [III], good color tone and fastness are obtained. It was found that an excellent black transfer record was obtained.
本発明の黒色の転写シートは、昇華しやすく、しか
も、昇華性が夫々合致した色素を配合した色材層を有し
ているため、感熱ヘツドに大きな負担をかけることな
く、高速で色濃度の高い記録を得ることができる。更に
熱・光・湿気・薬品などに対して安定であるため、転写
記録中に熱分解することなく、得られる記録の保存性も
すぐれている。又、本発明に使用する色素は、有機溶剤
に対する溶解性及び水に対する分解性が良好であるた
め、均一に溶解あるいは分散した高濃度のインクを調製
することが容易であり、それらのインクを用いることに
より、色素が均一に高濃度で塗布された転写シートを得
ることができる。したがつて、それらの転写シートを用
いることにより均一性及び色濃度の良好な記録を得るこ
とができる。The black transfer sheet of the present invention is easy to sublimate, and further, since it has a coloring material layer containing a dye whose sublimation property is matched, the black transfer sheet does not impose a heavy burden on the heat-sensitive head, and the color density of the color is high at high speed. You can get a high record. Furthermore, since it is stable against heat, light, moisture, chemicals, etc., it does not decompose thermally during transfer recording, and the obtained record is excellent in storability. Further, since the dye used in the present invention has good solubility in an organic solvent and decomposability in water, it is easy to prepare a high-concentration ink that is uniformly dissolved or dispersed, and those inks are used. This makes it possible to obtain a transfer sheet to which the dye is uniformly applied at a high concentration. Therefore, by using these transfer sheets, it is possible to obtain a recording with good uniformity and color density.
実施例 以下実施例によりこの発明を具体的に説明するがかか
る実施例は本発明を限定するものではない。EXAMPLES The present invention will be described in detail with reference to examples below, but the examples do not limit the present invention.
実施例１ ａ）インクの調製 配合比率 （１−１） 2.6g（26％） 配合色素 （１−２） 2.1g（21％） （１−３） 5.3g（53％） ポリスルホン樹脂＊ 10 ｇ クロロベンゼン 80 ｇ 合計 100 ｇ ＊ 日産化学工業株式会社製造、ユーデルＰ−1700（商
品名） 上記組成の混合物をペイントコンディシヨナーで10分
間処理し、インクの調製を行なつた。色素及び樹脂は完
全に溶解し、均一な溶液のインクを得ることができた。Example 1 a) Preparation of ink Blending ratio (1-1) 2.6g (26%) Blending pigment (1-2) 2.1g (21%) (1-3) 5.3g (53%) Polysulfone resin * 10 g Chlorobenzene 80 g Total 100 g * Nissan Udel P-1700 (trade name) manufactured by Kagaku Kogyo Co., Ltd. An ink was prepared by treating the mixture having the above composition with a paint conditioner for 10 minutes. The dye and resin were completely dissolved, and an ink having a uniform solution could be obtained.
ｂ）転写シートの作製 上記のインクをバーコーター（PK Print Coat Instru
ments社製造、No.1）を用いてポリイミドフィルム（15
μｍ厚）上に塗布した後、自然乾燥して転写シートを得
た。b) Preparation of transfer sheet The above ink was applied to a bar coater (PK Print Coat Instru
No.1 manufactured by ments Co., Ltd. is used for polyimide film (15
(μm thickness) and then naturally dried to obtain a transfer sheet.
ｃ）転写記録 上記転写シートのインク塗布面を被記録体と重ね感熱
ヘツドを用い下記条件で記録し、鮮明なブラツク色で1.
60の均一で高い色濃度の記録を得ることができた。c) Transfer recording The ink-coated surface of the transfer sheet was superposed on the recording medium and a thermal head was used to record under the following conditions.
It was possible to obtain 60 uniform and high color density records.
記録条件 主走査、副走査の線密度:4ドツト/mm 記録電力:0.6W/ドツト ヘツドの加熱時間:10msec なお、被記録体は、飽和ポリエステル34重量％の水分
散液（東洋紡績株式会社製造、バイロナールMD−1200、
商品名）10gとシリカ（日本シリカ工業株式会社製造、N
ipsil E220A、商品名）1gとを混合し調製した液を上質
紙（200μｍ厚）にバーコーター（PK Print Coat Instr
uments社製造、No.3）を用いて塗布後、乾燥して製造し
た。Recording conditions Linear density for main scanning and sub scanning: 4 dots / mm Recording power: 0.6 W / dot Heating time for head: 10 msec The recording medium is an aqueous dispersion of 34 wt% saturated polyester (manufactured by Toyobo Co., Ltd.) , Bayronal MD-1200,
(Product name) 10g and silica (manufactured by Nippon Silica Industry Co., Ltd., N
A liquid prepared by mixing 1g of ipsil E220A (trade name) with a bar coater (PK Print Coat Instr
No. 3) manufactured by uments, and then dried.
色濃度は、米国マスベス社製造、デンシトメーターRD
−514型（フイルター：ラツテンNo.106）を用いて測定
した。Color density is densitometer RD manufactured by Masbeth, USA
It was measured using a -514 type (filter: Ratten No. 106).
得られた記録の耐光性試験をカーボンアークフエード
メーター（スガ試験機株式会社製造）を用いてブラツク
パネル温度63±２℃で実施したが40時間の照射後ほとん
ど変退色しなかつた。The light fastness test of the obtained record was carried out using a carbon arc fade meter (manufactured by Suga Test Instruments Co., Ltd.) at a black panel temperature of 63 ± 2 ° C., but almost no discoloration or fading occurred after irradiation for 40 hours.
実施例２ 実施例１で用いた色素のかわりに、第１表に示す色素
を用い、実施例１の方法に従つてインクの調製、転写シ
ートの作製、及び転写記録を実施した結果、各々第１表
に示す色濃度の鮮明なブラツク色の記録を得ることがで
きた。Example 2 Instead of the dye used in Example 1, the dyes shown in Table 1 were used, and ink was prepared, a transfer sheet was prepared, and transfer recording was carried out in accordance with the method of Example 1. It was possible to obtain a clear black color record having the color density shown in Table 1.
Claims (3)
ヘッドにより加熱して昇華性色素を被記録体に転写して
記録を得る感熱転写記録方式に使用する転写シートであ
って、下記一般式〔Ｉ〕、〔II〕および〔III〕で表わ
される昇華性色素を含有する色材層を有する転写シー
ト。 （式中、Ｘ、Ｙは水素原子、メチル基を表わし、Ａは−
CO−、−COO−、−SO2−を表わし、R1、R2、R3、R4、
R5、R6は水素原子、置換もしくは非置換のアルキル基を
表わす。R7はメトキシ基で置換されていてもよい炭素数
１〜４のアルキル基を表わす。）1. A transfer sheet for use in a heat-sensitive transfer recording method, wherein a transfer sheet coated with a sublimable dye is heated by a thermal head to transfer the sublimable dye to a recording medium to obtain a recording. A transfer sheet having a coloring material layer containing a sublimable dye represented by formulas [I], [II] and [III]. (In the formula, X and Y represent a hydrogen atom and a methyl group, and A is-.
CO -, - COO -, - SO 2 - represents, R 1, R 2, R 3, R 4,
R 5 and R 6 represent a hydrogen atom or a substituted or unsubstituted alkyl group. R 7 represents an alkyl group having 1 to 4 carbon atoms which may be substituted with a methoxy group. )
おいて、一般式〔Ｉ〕〜〔III〕のR1、R2、R3、R4、
R5、R6が、C1〜C6のアルキル基、C7〜C9のフェニルアル
キル基で表わされるシート。2. The transfer sheet according to claim 1 , wherein R 1 , R 2 , R 3 , R 4 of general formulas [I] to [III],
A sheet in which R 5 and R 6 are each represented by a C 1 to C 6 alkyl group and a C 7 to C 9 phenylalkyl group.
おいて、色材層が、一般式〔Ｉ〕で表わされる色素を10
〜50％、一般式〔II〕で表わされる色素を10〜50％およ
び一般式〔III〕で表わされる色素を30〜80％含有する
シート。3. The transfer sheet according to claim 1, wherein the coloring material layer comprises a dye represented by the general formula [I].
A sheet containing 50% to 50% of the dye represented by the general formula [II] and 30 to 80% of the dye represented by the general formula [III].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59272186A JPH0811466B2 (en) | 1984-12-24 | 1984-12-24 | Transfer sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59272186A JPH0811466B2 (en) | 1984-12-24 | 1984-12-24 | Transfer sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61148096A JPS61148096A (en) | 1986-07-05 |
| JPH0811466B2 true JPH0811466B2 (en) | 1996-02-07 |
Family
ID=17510281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59272186A Expired - Lifetime JPH0811466B2 (en) | 1984-12-24 | 1984-12-24 | Transfer sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0811466B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE34737E (en) * | 1984-07-11 | 1994-09-20 | Mitsubishi Kasei Corporation | Dye transfer sheet for sublimation heat-sensitive transfer recording |
| US4701439A (en) * | 1985-12-24 | 1987-10-20 | Eastman Kodak Company | Yellow dye-donor element used in thermal dye transfer |
| WO1988002699A1 (en) * | 1986-10-07 | 1988-04-21 | Dai Nippon Insatsu Kabushiki Kaisha | Thermal transfer sheet |
| US4933315A (en) * | 1987-02-20 | 1990-06-12 | Dai Nippon Insatsu Kabushiki Kaisha | Heat transfer sheet |
| JPH06104388B2 (en) * | 1988-09-21 | 1994-12-21 | 株式会社日立製作所 | Thermal transfer sheet, manufacturing method thereof and thermal transfer method |
| EP0453020B1 (en) * | 1990-04-20 | 1995-01-18 | Agfa-Gevaert N.V. | Black colored thermal dye sublimation transfer donor element |
| US5521142A (en) * | 1995-09-14 | 1996-05-28 | Minnesota Mining And Manufacturing Company | Thermal transfer dye donor element |
-
1984
- 1984-12-24 JP JP59272186A patent/JPH0811466B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61148096A (en) | 1986-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH05237B2 (en) | ||
| JPH0462277B2 (en) | ||
| JPH0545436B2 (en) | ||
| JPH0811466B2 (en) | Transfer sheet | |
| JPH0513077B2 (en) | ||
| JPH0513076B2 (en) | ||
| JP2623241B2 (en) | Dye for thermal transfer recording and thermal transfer sheet | |
| JPH085253B2 (en) | Dye for thermal transfer recording and thermal transfer sheet | |
| JPS63189289A (en) | Thermal transfer sheet | |
| JPS60239292A (en) | Coloring matter for thermal transfer recording | |
| JPH0515198B2 (en) | ||
| JPH051154B2 (en) | ||
| JPH05236B2 (en) | ||
| JPH051155B2 (en) | ||
| JP2847534B2 (en) | Thermal transfer material | |
| JPS6233688A (en) | Dyestuff for thermal transfer recording | |
| JP2909962B2 (en) | Azo dye for thermal transfer recording | |
| JPH0515199B2 (en) | ||
| JPH0712738B2 (en) | Dicyanoimidazole dye for thermal transfer recording | |
| JPH0515197B2 (en) | ||
| JPH0613642B2 (en) | Dye for heat-sensitive transfer recording and heat-sensitive transfer sheet | |
| JPH0655903B2 (en) | Dye for thermal transfer recording and sheet for thermal transfer recording | |
| JPH085252B2 (en) | Dye for thermal transfer recording and thermal transfer sheet | |
| JP3661521B2 (en) | Dye for thermal transfer recording and thermal transfer sheet | |
| JPH0815817B2 (en) | Pyrazolone azo type heat-sensitive transfer recording dye and heat-sensitive transfer sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |