JPH0569718B2 - - Google Patents
Info
- Publication number
- JPH0569718B2 JPH0569718B2 JP59089673A JP8967384A JPH0569718B2 JP H0569718 B2 JPH0569718 B2 JP H0569718B2 JP 59089673 A JP59089673 A JP 59089673A JP 8967384 A JP8967384 A JP 8967384A JP H0569718 B2 JPH0569718 B2 JP H0569718B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- sublimable dye
- base film
- recording layer
- dye
- 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
- 238000009792 diffusion process Methods 0.000 claims description 5
- 239000000975 dye Substances 0.000 description 27
- 238000000859 sublimation Methods 0.000 description 10
- 230000008022 sublimation Effects 0.000 description 10
- 229920006267 polyester film Polymers 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 2
- 239000001000 anthraquinone dye Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000001044 red dye Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はフアクシミリ、プリンタなどに用いら
れる熱転写シート、特に昇華性染料を使用する熱
転写シートに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal transfer sheet used in facsimiles, printers, etc., and particularly to a thermal transfer sheet using sublimable dye.
最近、カラー記録に対する要望が高まり、これ
に対応する方式として熱転写記録方式の開発が盛
んに行われている。熱転写記録方式の一つに昇華
性染料を用いた方式がある。
Recently, the demand for color recording has increased, and thermal transfer recording methods have been actively developed as a method to meet this demand. One of the thermal transfer recording methods is a method using sublimable dye.
これは昇華性染料を、サーマルヘツド等の熱源
により加熱昇華させ、記録紙に吸着させて記録を
得る方式であり、外部から加える熱量を制御する
ことによつて記録濃度を変えることができるた
め、容易に中間調を表現することができる。この
ため、イエロー、マゼンタ、シアンの３色を用い
れば写真に類するフルカラー記録を行うことがで
きる点で最近特に注目されている。 This is a method in which a sublimable dye is heated and sublimated using a heat source such as a thermal head, and then adsorbed onto the recording paper to obtain a record.The recording density can be changed by controlling the amount of heat applied externally. Halftones can be easily expressed. For this reason, it has recently attracted particular attention because it is possible to perform full-color recording similar to photography by using the three colors yellow, magenta, and cyan.
上記の熱転写記録方式に用いる従来の昇華シー
トはベースフイルム上に昇華性染料を含む記録層
が積層された構造となつている。ベースフイルム
は耐熱性が良く、薄いものであれば特に制限はな
く、価格の点から通常はポリエステルフイルム、
コンデンサー紙が用いられており、特に強度の高
いことが要求される場合にはポリエステルフイル
ムが用いられている。記録層は主に昇華性染料及
び接着剤からなつている。昇華性染料として用い
られるのは主に分散染料と呼ばれる種類の染料
で、モノアゾ系、ジスアゾ系、アンスラキノン系
の染料が良く用いられる。これらの染料は疎水性
樹脂の染色に用いられるものである。接着剤は染
料を含有する膜を形成できれば良く、ポリ酢酸ビ
ニル、ポリ塩化ビニル、エポキシ樹脂、ポリウレ
タン樹脂等を用いることができる。 A conventional sublimation sheet used in the above thermal transfer recording system has a structure in which a recording layer containing a sublimable dye is laminated on a base film. There are no particular restrictions on the base film as long as it has good heat resistance and is thin; from the viewpoint of price, it is usually polyester film,
Condenser paper is used, and polyester film is used when particularly high strength is required. The recording layer mainly consists of a sublimable dye and an adhesive. The types of dyes that are mainly used as sublimable dyes are called disperse dyes, and monoazo, disazo, and anthraquinone dyes are often used. These dyes are used for dyeing hydrophobic resins. Any adhesive can be used as long as it can form a dye-containing film, and polyvinyl acetate, polyvinyl chloride, epoxy resin, polyurethane resin, etc. can be used.
また記録紙としては昇華性染料を受容しやすい
高分子膜を普通紙上に形成したものが用いられ
る。前述の高分子としては、ポリエステル、アセ
テート、ナイロン等が昇華性染料の種類により適
宜選択されて用いられる。 The recording paper used is plain paper on which a polymer film that easily accepts sublimable dyes is formed. As the above-mentioned polymer, polyester, acetate, nylon, etc. are appropriately selected and used depending on the type of sublimable dye.
記録紙上に記録を行うには、記録紙の高分子塗
布面と記録層とを向き合わせて重ね、サーマルヘ
ツドでベースフイルム面を加熱し、昇華性染料を
昇華させて記録紙に移行させることによつて行わ
れる。このようにベースフイルム側が加熱されて
記録が行われるため、ベースフイルムと昇華性染
料との組合せによつてはベースフイルム側へも昇
華性染料が拡散することがある。例えばベースフ
イルムとして多く用いられているポリエステルフ
イルムの場合に、アンスラキノン系染料である赤
色染料PSD−20（住友化学製）を用いると、記録
時昇華性染料は記録紙へ移行するとともに、ベー
スフイルムであるポリエステルフイルムにも拡散
浸透する。このため記録層に含有される昇華性染
料は記録に必要とされる染料の約２倍近く必要と
なる。従つて、記録層の昇華性染料と接着剤との
比率が一定ならば、記録層の厚みは約２倍必要と
なり、記録感度が低下することや、昇華性染料の
接着剤に対する比率を大きくすると、記録層中の
昇華性染料が圧力により記録紙へ転移しやすくな
り、記録紙の地汚れが生じ易くなるという欠点が
ある。 To record on recording paper, the polymer-coated surface of the recording paper and the recording layer are stacked facing each other, and the base film surface is heated with a thermal head to sublimate the sublimable dye and transfer it to the recording paper. It is done by folding. Since the base film side is heated and recording is performed in this way, depending on the combination of the base film and the sublimable dye, the sublimable dye may also diffuse to the base film side. For example, in the case of polyester film, which is often used as a base film, if red dye PSD-20 (manufactured by Sumitomo Chemical), which is an anthraquinone dye, is used, the sublimable dye will migrate to the recording paper during recording, and the base film will It also diffuses into polyester film. Therefore, the amount of sublimable dye contained in the recording layer is approximately twice the amount of dye required for recording. Therefore, if the ratio of sublimable dye to adhesive in the recording layer is constant, the thickness of the recording layer will need to be approximately twice as thick, and recording sensitivity will decrease, and if the ratio of sublimable dye to adhesive is increased, However, there is a drawback that the sublimable dye in the recording layer is easily transferred to the recording paper due to pressure, and the recording paper is likely to be smudged.
本発明は昇華性染料のベースフイルムへの拡散
を防止することにより、前述の問題を改善しよう
とするものである。
The present invention seeks to improve the aforementioned problems by preventing the sublimable dye from diffusing into the base film.
本発明は、ベースフイルム上に昇華性染料を含
む記録層が形成されている熱転写シートにおい
て、ベースフイルムと記録層との間に、拡散係数
が記録層に含まれる昇華性染料の拡散係数よりも
小さい昇華性染料を含む中間層を設けたものであ
る。
The present invention provides a thermal transfer sheet in which a recording layer containing a sublimable dye is formed on a base film, in which the diffusion coefficient between the base film and the recording layer is higher than the diffusion coefficient of the sublimable dye contained in the recording layer. An intermediate layer containing a small sublimable dye is provided.
次に実施例を挙げて本発明を詳細に説明する。
第１図は本発明の一実施例を示す断面図である。
Next, the present invention will be explained in detail with reference to Examples.
FIG. 1 is a sectional view showing one embodiment of the present invention.
まず、ベースフイルム１１として強度、価格の
観点からポリエステルフイルムを用いた。次に、
記録層１３を作成するため、昇華性染料としてカ
ヤセツトブルー136（日本化薬製）を２重量部、接
着剤としてポリビニルブチラール樹脂を５重量
部、溶剤として塩化メチレンを100重量部になる
様に秤量し混合した。次に中間層１２を作成する
ため、昇華性染料の拡散係数の小さいヒドロキシ
エチルセルロース10重量部を水100重量部に溶解
し、ワイヤーバーを用いてヒドロキシエチルセル
ロース溶液を10μm厚さのポリエステルフイルム
上に塗布し、これを乾燥して約1μm厚さの中間層
１２を形成した。この中間層１２上に、同様にワ
イヤーバーを用いて前述の昇華性染料を含む溶液
を塗布した後、乾燥して約2μm厚さの記録層１３
を形成して昇華シート１を作成した。なお、比較
のため10μm厚さのポリエステルフイルム上に
2μm厚さの記録層のみを形成した昇華シートを作
成した。また、記録紙として普通紙上にポリエス
テル膜が形成された記録紙を用意した。次に前述
の各昇華シートと記録紙とを重ね合せ、発熱体素
子密度６本／mmのサーマルヘツドを用い、１発熱
体素子当り記録電力0.4ワツトで記録し、赤色の
領域で濃度測定したところ、中間層を設けた本発
明の昇華シートでは約1.2の記録濃度（OD）が得
られたが、中間層の無い昇華シートでは約0.9の
記録濃度しか得られなかつた。また中間層の無い
昇華シートで約1.2の記録濃度を得るには、記録
層の厚さは約1.5倍必要であり、またより大きな
記録電力を必要とした。 First, a polyester film was used as the base film 11 from the viewpoint of strength and cost. next,
To create the recording layer 13, 2 parts by weight of Kayaset Blue 136 (manufactured by Nippon Kayaku) was used as a sublimable dye, 5 parts by weight of polyvinyl butyral resin as an adhesive, and 100 parts by weight of methylene chloride as a solvent. Weighed and mixed. Next, to create the intermediate layer 12, 10 parts by weight of hydroxyethyl cellulose, which has a small diffusion coefficient for sublimable dyes, is dissolved in 100 parts by weight of water, and the hydroxyethyl cellulose solution is applied onto a 10 μm thick polyester film using a wire bar. This was dried to form an intermediate layer 12 having a thickness of about 1 μm. On this intermediate layer 12, a solution containing the above-mentioned sublimable dye is similarly applied using a wire bar, and then dried to form a recording layer 13 with a thickness of about 2 μm.
A sublimation sheet 1 was prepared by forming a sublimation sheet. For comparison, the sample was placed on a 10 μm thick polyester film.
A sublimation sheet with only a 2 μm thick recording layer was created. In addition, recording paper in which a polyester film was formed on plain paper was prepared as recording paper. Next, each of the above-mentioned sublimation sheets and recording paper were superimposed, and using a thermal head with a heating element density of 6 pieces/mm, recording was performed at a recording power of 0.4 watts per heating element, and the density was measured in the red area. A recording density (OD) of about 1.2 was obtained with the sublimation sheet of the present invention provided with an intermediate layer, whereas a recording density (OD) of only about 0.9 was obtained with the sublimation sheet without an intermediate layer. Furthermore, in order to obtain a recording density of approximately 1.2 with a sublimation sheet without an intermediate layer, the thickness of the recording layer was required to be approximately 1.5 times greater, and greater recording power was required.
以上説明したように、中間層を設けた本発明の
熱転写シートは記録層の厚さを薄くできるため、
シートのコストが安くなり、また記録感度が高く
なるという効果を有するものである。
As explained above, since the thermal transfer sheet of the present invention provided with an intermediate layer can reduce the thickness of the recording layer,
This has the effect of reducing the cost of the sheet and increasing recording sensitivity.
第１図は本発明の昇華シートの一実施例を示す
断面図である。
１……昇華シート、１１……ベースフイルム、
１２……中間層、１３……記録層。
FIG. 1 is a sectional view showing an embodiment of the sublimation sheet of the present invention. 1... Sublimation sheet, 11... Base film,
12... intermediate layer, 13... recording layer.
Claims (1)
が形成されている熱転写シートにおいて、ベース
フイルムと記録層との間に、拡散係数が記録層に
含まれる昇華性染料の拡散係数よりも小さい昇華
性染料を含む中間層を設けたことを特徴とする熱
転写シート。1. In a thermal transfer sheet in which a recording layer containing a sublimable dye is formed on a base film, the diffusion coefficient between the base film and the recording layer is smaller than the diffusion coefficient of the sublimable dye contained in the recording layer. A thermal transfer sheet characterized by having an intermediate layer containing a dye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59089673A JPS60232996A (en) | 1984-05-04 | 1984-05-04 | Heat transfer sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59089673A JPS60232996A (en) | 1984-05-04 | 1984-05-04 | Heat transfer sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60232996A JPS60232996A (en) | 1985-11-19 |
| JPH0569718B2 true JPH0569718B2 (en) | 1993-10-01 |
Family
ID=13977265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59089673A Granted JPS60232996A (en) | 1984-05-04 | 1984-05-04 | Heat transfer sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60232996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007066770A1 (en) | 2005-12-09 | 2007-06-14 | Dai Nippon Printing Co., Ltd. | Thermal transfer sheet |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63281888A (en) * | 1987-05-15 | 1988-11-18 | Dainippon Printing Co Ltd | Thermal transfer recording sheet |
| EP0386250A4 (en) * | 1988-07-12 | 1991-09-25 | Dai Nippon Insatsu Kabushiki Kaisha | Heat-sensitive transfer method |
| GB9117986D0 (en) * | 1991-08-20 | 1991-10-09 | Ici Plc | Thermal transfer printing dyesheet |
| WO2006046566A1 (en) | 2004-10-25 | 2006-05-04 | Dai Nippon Printing Co., Ltd. | Thermal transfer sheet and protective layer transfer sheet |
| ES2319450T3 (en) | 2004-11-02 | 2009-05-07 | Dai Nippon Printing Co., Ltd. | THERMAL TRANSFER SHEET. |
-
1984
- 1984-05-04 JP JP59089673A patent/JPS60232996A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007066770A1 (en) | 2005-12-09 | 2007-06-14 | Dai Nippon Printing Co., Ltd. | Thermal transfer sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60232996A (en) | 1985-11-19 |
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