JPS5978897A - Dye transferrer - Google Patents

Abstract

PURPOSE:To obtain a dye transferrer suitable for high-speed recording using an electronic device, e.g., thermal head, laser beam, etc., in particular and capable of giving smooth tone and excellent picture quality, in which a thin film of a sublimable dye is provided on a base material. CONSTITUTION:A sublimable dye (e.g., a compound of the formula) thin film having a thickness of preferably 10<-2>-1mum is formed on a base material provided with a surface of a high polymer composition (e.g., urethane resin, polyester resin, etc.), a metal (e.g., aluminium, copper, iron, silver, Co, Ni, etc.), a metal oxide, a metal sulfide, graphite, or silicon carbide in order to obtain a desired dye transferrer.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to recording by thermal transfer.
1. With regard to photography, it is especially suitable for high-speed H1 recording/bar F publication using electronic devices such as thermal beams and laser beams.

Conventional configurations and their problems Conventionally, 1. applied to crystallographic r records, 1 to 1 to obtain interpolated q bodies, ll, and t'I types have been used in ph. Among them, those using sublimable dyes are advantageous for recording pigeons, but there are problems with image quality disturbances due to non-uniform sublimation of the dye.

The failure seems to be mainly caused by the following factors.

1) Heat resistance is often required for the substrate, and paper is often used. However, if the sublimable dye is directly attached to the substrate, the dye tends to collect locally, resulting in non-uniform sublimation of the dye in the agglomerated areas.

2) In order to prevent the problem that occurs in 1) above, in the case where the dye is bound with a binder, the dye interacts with the binder layer, and the binder that communicates with the binder after the dye sublimes.
d Since the colors are different, the coloring of the dye will be uneven.

The above-mentioned problem 1) cannot be considered to be caused by poor bonding between the substrate and the dye or unevenness due to irregular orientation of paper fibers.

OBJECT OF THE INVENTION The present invention has been made to eliminate the above-mentioned drawbacks of the prior art, and to make it possible to obtain smooth images, especially full-color copies, with image quality that is superior to that of the past. With the goal.

Structure of the Invention In order to achieve the above object, the dye transfer member of the present invention has a thin film made of a sublimable dye on a substrate.

DESCRIPTION OF EMBODIMENTS Below, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a cross-sectional view of the dye transfer body, in which an oil-liftable dye film (2) is coated on the base (1). (abbreviated as Mica). Heat is usually applied from the opposite side of the base (1), and the dye present in the dye film (2) sublimates uniformly.

This can be explained by the fact that the divided dye film (2) is heated uniformly and the dye in it is uniformly heated. It is appropriate that the thickness of the dye thin film (2) ranges from 10" to 1 μm. Figure 2 shows a dye having the structural formula shown in the following formula @Concentration - Dye Thin 11Q
One substrate: 18 μm polyethylene terephthalate film Receiving paper: Clay paper Heating conditions = 130°C Hot pliers, heating for 10 seconds The dye thin film (2) was prepared using methanol solutions of various ratios of the dyes of the above formula. Attached by casting with wire bars. Furthermore, by heating for 5 seconds or more, all the dye sublimates, and the Ar'' recording density is saturated.The saturation recording density corresponding to the thickness of the dye thin film (2) of 10-''~l Itm is about 0.5~ It is in the reverse of 1.8. Practically speaking, recording images with various densities below the saturation recording density can be obtained by changing the heating time and heating temperature.
In the case below, it is not enough and it is not practical, and if the thickness is less than 1 μm, the sublimation of the dye will be uneven, and the part quality ≠; In addition, the image quality depends on the smoothness of the substrate (1), and good image quality is obtained when the Bekk smoothness of the substrate (1) is 1000 seconds or more. Particularly when the following compounds or compositions are present in the contact area between the dye and the substrate, uniformity) I! A thin dye film is obtained 1-. fi, gives a favorable result.

Polymer compositions near enol resin, melamine resin, urethane resin, epoxy resin, silicone resin, urea resin I
], diallyl phthalate, alkyd resin, acetal resin, acrylic resin, methacrylic resin, polyester resin, cellulose resin, starch and its derivatives, polyvinyl chloride, polyvinidene chloride, tetrafluorinated fat, chlorinated polyethylene, polyethylene , polypropylene, polystyrene, polyvinyl acecool, polyamide,
Polyvinyl alcohol, polycarbo*-), t'lJ
X sulfone, polyether sulfone, HoIJ phenylene oxide, polyphenylene sulfide, polyether ether ketone, polyamino bismaleimide, polyarylate, polyethylene terephthalate, polyethylene 7-
5+ rate, polyimide, polyamitoimide, polyacrylonitrile, AEI resin, AB8 resin, S 13
Compositions mainly composed of R or these metals Nialuminum, paulownia, iron, scissors, zinc, cobalt, nickel, tin, silicon, kermanium, or alloys mainly composed of these Metal oxides: alumina, beryllium oxide, magnesium oxide , paulownia suboxide, zinc oxide, indium oxide, tin oxide, titanium oxide, silicon oxide.

- Iron oxide, cobalt k oxide, nickel oxide, manganese oxide, mental oxide, vanadium oxide, tungsten oxide,
Molybdenum oxide Matakeko etc. compounds doped with impurities.Metal oxides: copper sulfide, zinc sulfide, tin sulfide, molybdenum sulfide, or these compounds doped with impurities.Polymer compositions listed above (In addition, those with a melting point or softening point of 100°C or higher are also suitable for the purpose of the present invention. This is a high-speed record σ in this study). Therefore, sufficient sublimation ability can be obtained by heating the pre-bond to 100°C. The sublimable dye has +J1. This is probably because the above-mentioned polymer composition cannot be obtained by transferring only the sublimable dye, since the daytime molecular composition of Tonera does not melt or soften with this degree of heating. In addition to compounds, metals, metal oxides, and metal sulfides, graphite and silicon carbide can be used. Helps improve heat transfer to the thin film. The formation of a homogeneous dye film can be attributed to familiar ζ or electronic interactions between the dye and the compound or composition of the straw.

The dye transfer material of the present invention can be obtained, for example, by casting a dye solution or dispersion onto the substrate (1), or by vapor deposition or sputtering of the dye. The substrate (1) may be, for example, a sheet made of the above-mentioned polymer composition, or a paper to which the above-mentioned metals, metal oxides, metal sulfides, etc. are attached by vapor deposition or casting of a mixture with a binder. Next, concrete examples of the present invention will be described. 8 Example 1 A 2 weight percent solution of the following polymeric material °W was coated on a 10 μm thick capacitor paper using a wire coater, dried and fr
A 1% by weight solution of the dye represented by the fy formula in the previous formula was applied thereon in the same manner to obtain a dye transfer material.
The thickness of the dye thin film is 0.1 μm, and the Beck smoothness of the substrate is 3.
It was 000 seconds.

Polymeric substances: Urethane resin, polyester 1☆ (product name, Vylon 200), methacrylic resin, hydroxyethyl cellulose, polyvinyl chloride, polyvinylidene fluoride, polystyrene, nylon 12, polyvinyl alcohol, polycarbonate, polysulfone. Set the thermal head (3
) to draw an image on activated clay paper (4). The Ae recording conditions are based on the following one.

Detailed main scanning and sub-scanning #28 dots/l #I distribution power
: 0.21W/to dot thermal/Solution heating per piece: 1~B m5IIIli image unit surface...The relationship between the thermal head heating time and the rate at which more than half of the dots of the thermal head per k are confirmed is shown in the 41st series. Shown below. As a reference example, the relationship between conventional dye transfer bodies is also shown.
! It can be seen that dots can be sufficiently formed in the bowl even with a short heating interval. Furthermore, in the reference example, a part where dye nodules are attached on the f''j activated clay paper is seen fl, 7'r
However, in the case of this example, no lumps of dye were observed.

Example 2 Aluminum, silicon, indium oxide, and tin oxide were individually attached to the same capacitor paper as in Example 1 by vapor deposition, and the dye of Example 1 was attached to a thickness of 0.02 μm by vapor deposition thereon to form a dye transfer material. and 1. The Bekk smoothness of the fC1 substrate was 5000 seconds or more. Example 1 using these
Recording was carried out in exactly the same manner as in Example 1, and substantially the same results as in Example 1 shown in FIG. 4 were obtained.

Example 1 A 5 μm thick electrolytic capacitor paper was coated with a solution of 6 fIfls containing 1% by weight of bent lead, titanium oxide, alumina, clay, Merck and 1% by weight of barium acid. engineered,
Dry. A dye thin film of 0.5 μm thick was attached to ψ as in Example 1 on σ) to obtain a 4jl embossed transfer body, and the Bekk smoothness of the substrate was 1000 seconds.

VC recording was carried out in exactly the same manner as in Example 1 using the h3 et al., and substantially the same results as in Example 1 shown in FIG. 4 were obtained.

Effects of the Invention As described above, the dye transfer material of the present invention can produce images with smooth gradations and smooth gradations with sufficient reproducibility of individual dots corresponding to the thermal head. In addition to the magenta dye, dyes that develop cyan and yellow colors could also be used in the IFI, and the relationship between dot reproducibility and thermal head heating time almost the same as in Example 1 was obtained. Konara 3
It is also possible to make full color copies with smooth gradations by sequentially supplying different types of dye transfer materials.

A simple clear drawing of 41 sheets and 11 m shows the implementation of the present invention. Fig. 1 is an analysis view of the dye transfer material, and Fig. 2 shows the recording performance - thickness of dye thin 11 pieces. FIG. 3 is a graph showing the relationship; FIG. 3 is an analysis view during recording; FIG. 4 is a graph showing the relationship between dot reproducibility and thermal head heating time.

(1)...Substrate, (2)...Dye pattern, (3)...
...Thermal head, (4)...Activated clay paper agent Yoshihiro Morimoto 11th scene 1 Figure 3 Δ Figure 4

Claims (1)

[Claims] ] A dye transfer material having a thin film made of a sublimable dye on a substrate. 2. Claims in which the surface of the substrate in contact with the thin film made of the sublimable dye consists of a diluent molecular composition, a metal, a metal oxide, a metal chain, graphite, or silicon carbide.
Dye transfer material according to item 1. 8 The thickness of the thin film made of sublimable dye is 101 to 1 μm (
r) A dye transfer member according to claim 1 within the scope of the present invention. 4. The dye transfer material according to claim 1, wherein the substrate has a Beck smoothness If of 1000 seconds or more. 5. The dye transfer material according to claim 1 or claim 2, wherein the polymer composition has a melting point or softening point of 100° C. or higher. 6 Polymer composition≠ζphenol resin, melamine resin,
Urethane resin, epoxy resin, urethane resin, urea resin, diallyl phthalate + 174 resin, alkyd resin,
Acetal resin, acrylic iM! l effect, methacrylic 1
Seals, 4 polyesters, 1 substance, cellulose resin, starch and its semiconductors, polyvinyl chloride, polyvinylidene chloride, fluorinated fat, chlorinated polyethylene, polyethylene, polypropylene, polystyrene, polyvinyl acetal, polyamide, polyvinyl alcohol, polycarbonate, Polysulfone, polyether sulfone, polyphenylene oxide, polyphenylene sulfide, polyether ether ketone, polyamino bismaleimide, polyarylate, polyethylene terephthalate, polyethylene naphthalate, polyimide, polyamideimide, polyacrylonitrile, MuS resin, AB8 resin, SBR matakeko The dye transfer material according to claim 1 or 2, selected from the compositions mainly consisting of h''r, 7. Metallic gallium, copper, iron, silver, lead, cobalt. 8. The dye transfer material according to claim 1 or 2, which is selected from an alloy mainly consisting of alumina, silicon, germanium, tin, or carbon dioxide. 8. The metal oxide is alumina, oxidation Pel IJium, magnesium oxide, cuprous oxide, zinc oxide, indium oxide, tin oxide, titanium oxide, silicon oxide, iron oxide, cobalt oxide, nickel oxide, manganese oxide, mental oxide,
The dye transfer material according to claim 1 or 2, which is selected from vanadium oxide, tungsten oxide, molybdenum oxide, or compounds doped with impurities. 9 Metals with sulfide steel, zinc sulfide, tin sulfide, 1l
Dye transfer member 8 according to claim 1 or 2, which is selected from a compound of molybdenum chloride or a compound doped with an impurity.