JPS61116592A - Thermal transfer type recording medium - Google Patents

Abstract

PURPOSE:To provide a thermal transfer type recording medium showing high adhesion of printed images and excellent contamination resistance and capable of giving clear printed image, wherein a heat-fusible ink layer is provided on a base, and a resin adhesive layer is provided thereon. CONSTITUTION:The heat-fusible ink layer 2 comprising a coloring material, e.g., a dye, a binder, e.g., carnauba wax, and a softener, e.g., vaseline, is provided on the base 1 such as cellophane by solvent coating or the like, and the resin adhesive layer 3 formed of a resin having a softening or melting point of preferably 50-180 deg.C, e.g., an acrylic resin, is applied to the ink layer 2 in a thickness of, e.g., about 0.2-2mum, to obtain the desired thermal transfer type recording medium.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel thermal transfer type recording medium, and more particularly to a thermal transfer recording medium that has strong adhesion strength to a transfer material, has excellent stain resistance, and provides a clear printed image.

i1f year, small size device, maintenance free, low Mf
Surfle printers came to be widely used. This Sanle printer has color! Two methods have been proposed: one using Fil heat 2 green paper, and the other using a thermal transfer recording medium, but the former has the disadvantage that the storage stability and fastness of the record are not good enough, and recently v113 has become widely adopted.

Also, thermal transfer P! :! According to 6 magazines that use Record & i media, it is possible to record on printing materials that cannot be printed on with conventional color-forming thermal printers and Impact 1 printers that use liquid ink at room temperature, and with these features. It is being utilized for new purposes such as various cards and labels.

Due to the nature of these cards, labels, etc., conventional heat transfer type S! The medium is often used under extremely harsh conditions compared to GM such as A-fiss, and conventional thermal transfer type 2 recording media have weak hardness to the transferred material and sub-r!
III property was poor, and stain resistance such as water resistance was also insufficient.

The present invention solves the above-mentioned drawbacks, and *Thermal transfer is ideal for recording cards, labels, etc., with high strength in the transfer mill, excellent anti-friction properties, and good stain resistance such as water resistance! 15&! &i media. In other words, as a result of intensive rust research, the inventor has created a layer of thermal ink on the material! 2. By providing a resin base@layer on top of the ink layer, it becomes hard to the transferred material! ! The inventors have discovered that the stain resistance is improved and the stain resistance is also improved, leading to the present invention.

The third contact layer of the present invention is prepared by dissolving a thermoplastic resin in the a@ solvent and coating it with a 5tS-based ink layer. The a*m&tMl ink layer and any rolled V material have high strength, and the softening point or line point is 50℃.
Temperatures from 60°C to 130°C can be used, preferably from 60°C to 130°C. At below 50℃, jI stage etc., a
10 times during the tyranny, i a o'ca top t'u
When marking T, a large amount of energy is applied to the e-folds, and when real solder is used, sufficient sa is not produced, which is undesirable as it causes printing defects.

Examples of these resins include acrylic resins, 7-mide resins, ketone resins, polystyrene-based 11-fat rosin resins, and phenolic a+si resins.

Examples include ethylene-tablet-pi-co-combination, chloride vinyl-Shunpi-co-kamatai body, etc. These dishes are coated with solvent,
It is directly coated to a thickness of about 0.2μ to 2μ. 0.
Under loading of 2μ, #east is small, and under loading of 2μ or more, the printing is not sufficiently Ill or softened, causing printing defects, which is not preferable.

Next, the heat-melting ink layer used in the thermal transfer type recording medium of the present invention is a dye, 1111FI, j! Conventionally known binders such as pigments, binders, and softeners are used, such as natural waxes such as carnauba wax and candelilla wax, etc. Examples include 0-Crystan wax, 1-1 paraffin wax, 6-oil wax, and B-charcoal wax (1) synthetic wax such as Montan.

In addition, the softeners include plane 111 import 1, hot brass, petrolatum, 6 theory 11m11f//1M Lf 1M tL
6.

These compositions are coated with an aasat ink layer by conventional methods such as hot melt coating or solvent coating.

Thermal transfer of the present invention 1! Examples of base materials used in recording media include paper for capacitors, cellophane, polyester, 4C Sh-ponate, polyimide, and other synthetic i+s materials.
i-film etc. are used as appropriate.

Next, examples of the present invention will be described.

Example 1 Paraffin wax (14!j) 135 parts Carnauba wax 30 parts

10all Flucon P (rough forest production learning 6 oil 0 gin) 15 parts carbon black 10al The above composition - 7 at 100℃
I fractionated carbon black at 2:11!1111jFL with a tritor.

This fiffi ink was coated on capacitor paper in a layer with a thickness of 4 μm by hot melt coating.

Next, as a contact, Persamide 711 (Japan Henkel Co., Ltd., polyamide > 1011 was added to 90 parts of ethanol for $111 L, and a layer of 81.5μ thick was coated on the &l!1!1W111 ink layer. , a thermal transfer recording medium.

When this thermal transfer V2m medium was used to print on a polypropylene label with a thermal printer, clear printing was obtained. Even if you strongly rub this print with your finger, it will print &! Does not peel off,
When this label, which had good abrasion resistance, was taken out from water and rubbed with a finger, there was no peeling of the print and it had good water resistance.

Actually $2 Paraffin wax (135F) 20rA Cartuba wax 35 parts NPS6115 (Oxide Microcrystalline wax manufactured by Nippon Seirosho) 25 parts Vaseline 5 parts Carbon black 15111I 211 Prestige at 100℃
I used 7 triters to process 2v4 and cut out the carbon black.

By hot-melt coating, this thermal #IIl ink was applied to a 9μ thick poly L2:Full film.
Coated on μ crocodile.

Next, for 6ml of 5lfI paddle, 101111 of Hylac 222 (ketone resin manufactured by Hitachi Chemical Co., Ltd.) was dissolved in 90m of methyl ethyl chloride, and coated on top of the transfer heat ink layer with a thickness of 1μ. ! g&! ll medium. When this thermal transfer body 128111 was used to print on a polypropylene label using a thermal printer, four bright prints were obtained. For this printed matter, Actual 81 Example 1 and Ft4
When I conducted a similar test, I found a good score.

Comparison 111 Example 1 A thermal printer was used to print on a polypropylene label using a 1lalalfi ink strip of Jiroshi 1 on a capacitor paper coated with a 4 μm M&: Hont Melt Coating magazine. I hold this printed image with my finger. When I tried to print it, it became impossible to print.

Next, take out the printed material in water for a moment.

When I rubbed it with my finger, the print came off and became illegible.

Comparison +112 Using the IaWIIa ink layer from Theory Example 2 applied to a 9μ thick polyester film with a 154μ thick melt coating droplet, printing was performed on a Borea 0 pyrene label using a thermal printer. . When I rubbed this seal with a layer, the print peeled off.

1vI1gl1 of the 0-order transfer printing that became the reading bell in water
g! When I poured out the water and stirred it with my fingers, it was printed s.
Il was peeled off and became an illegible bell.

As described above, the present invention is a reliable product that has excellent stain resistance such as book resistance and stain resistance in one light, and is suitable for cards, labels, etc. It provides a medium.

[Brief explanation of drawings]

Figure gA1 shows the thermal transfer lJ of the present invention:! 2 Recording media mourning'X theory example [@Home country, Figure 2 is conventional thermal transfer! 311! A lllllll diagram of the recording screw is shown. 1...Materials 2...II8 Meltable ink layer 3...Resin #I layer

Claims (1)

[Claims] 1. A thermal transfer recording medium comprising a heat-melting ink layer provided on a base material and a resin adhesive layer provided on the ink layer.