JP2002059693A - Pressure-sensitive transfer material for ink jet recording - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means for giving an ink jet printability for allowing to form readable voice signals, high quality photographic images or the like on a body to be recorded, which is difficult to form high quality images with an ink jet printer, such as an ordinary postcard, a general purpose copying paper or the like. SOLUTION: In this pressure-sensitive transfer material for ink jet recording, a pressure sensitive transferring layer at least including an ink accepting layer for ink jet recording is provided on one side of a base material sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink-jet printing method for forming a high-quality image on a recording medium, such as a normal postcard or a general-purpose copy sheet, on which a high-quality image is difficult to be formed. The present invention relates to a pressure-sensitive transfer material used for imparting an image.

[0002]

2. Description of the Related Art In recent years, the spread of inkjet printers at home or office has been remarkable.
In addition, the use of an expensive dedicated image-receiving sheet also achieves high-quality images comparable to silver halide color prints.

[0003] However, the printing / printing quality of general-purpose copy paper or ordinary New Year's cards with new year's numbers is not satisfactory.

[0004] For example, taking the example of printing on a New Year's card with a New Year's card number, which is considered to be the most used ink-jet printer at home, not only character prints such as greetings and addresses, but also photos and especially voice There is also a need to put in signals. However, in the case of a normal New Year's card with a new year's number, the photographic image quality obtained even when printing in high-definition mode is not satisfactory, and especially when printing audio signals, the obtained dot quality cannot be read. It is something. With regard to the need for printing on New Year's cards, not only text but also photos and audio signals are expected to increase in the future. In this case, it goes without saying that the quality of the photographic print is improved.
Reproducibility of a dot having a size of about 0 μm is required. For this purpose, recording must be performed in a high-definition mode using expensive special paper, and this is not possible with general-purpose copy paper or paper for a New Year's postcard with a New Year's card number.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a recording medium, such as a normal postcard or a general-purpose copy sheet, on which a high-quality image is difficult to be formed by an ink-jet printer, and a readable audio signal or a high-quality photographic image. It is an object of the present invention to provide a means for imparting ink jet print aptitude that enables formation of such as.

[0006]

That is, the invention according to claim 1 is characterized in that at least one pressure-sensitive transfer layer including an ink receiving layer for ink jet recording is provided on one surface of a base sheet. The present invention relates to a pressure-sensitive transfer material for inkjet recording.

The invention according to claim 2 relates to the pressure-sensitive transfer material for ink jet recording according to claim 1, wherein the ink receiving layer has a pressure-sensitive adhesive property.

The invention according to claim 3 relates to the pressure-sensitive transfer material for ink jet recording according to claim 1, wherein a pressure-sensitive adhesive layer is further provided on the ink receiving layer.

According to a fourth aspect of the present invention, the ink receiving layer comprises a binder resin and at least one of inorganic particles and organic particles, and the weight ratio of binder resin / particles is 1 / 0.8 to 0.8. The pressure-sensitive transfer material for ink jet recording according to any one of claims 1 to 3, which is 1/50.

[0010] The invention according to claim 5 is that, on the surface of the base sheet opposite to the side where the ink receiving layer is provided, and / or between the base sheet and the ink receiving layer,
5. The pressure-sensitive transfer material for ink jet recording according to claim 1, further comprising a release layer.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The base sheet of the present invention
At least, using a pressure-sensitive transfer material for ink-jet recording characterized by being provided with a pressure-sensitive transfer layer including an ink-receiving layer for ink-jet recording, a normal New Year's postcard, a recording medium such as general-purpose copy paper Forming high-quality photographic images and readable audio signals by transferring the ink-receiving layer for ink-jet recording to desired locations and then recording in high-definition mode on the transferred ink-receiving layer using an ink-jet printer. And the above-mentioned object is achieved.

The ink-jet recording pressure-sensitive transfer material of the present invention is used, particularly in the form of a tape, by being attached to a hand-held transfer tool used for transfer of a pressure-sensitive transfer tape such as a pressure-sensitive correction tape. It is suitable to do. This hand-held transfer tool usually includes a case (holder)
The unwinding reel of the pressure-sensitive transfer tape, the winding reel of the base sheet, and the pressing member are main components. When the pressure-sensitive transfer tape of the present invention is wound in a roll shape on an unwinding reel and mounted on a transfer tool, and the holder is moved while the pressing member is pressed against the surface of the recording medium, pressure-sensitive transfer from the unwinding reel is performed. The transfer tape is paid out,
The recording member is sequentially pressed against the surface of the recording medium by the pressing member, and the ink receiving layer for inkjet recording is adhered. On the other hand, the base sheet is separated from the ink receiving layer after passing through the pressing member, and is taken up on a take-up reel. When the transfer of the ink receiving layer onto the surface of the recording medium is completed, the holder is lifted after strongly pressing the pressing member against the surface of the recording medium, and the ink receiving layer is cut to complete the transfer operation. A high-quality photographic image and a readable audio signal can be formed by recording in a high-precision mode by an ink jet printer on an ink receiving layer transferred to a desired portion of a recording medium, thereby achieving the above object. Is done.

Hereinafter, the present invention will be described in detail.

The pressure-sensitive transfer material for ink-jet recording of the present invention has a structure in which a pressure-sensitive transfer layer including at least an ink-receiving layer for ink-jet recording is provided on one surface of a base sheet.

The pressure-sensitive transfer layer may be composed of only the ink-receiving layer, or may have a structure in which a pressure-sensitive adhesive layer is further provided on the ink-receiving layer. In the former case, the ink receiving layer preferably has pressure-sensitive adhesiveness.

The base sheet used in the pressure-sensitive transfer material for ink-jet recording of the present invention includes polyester films such as polyethylene phthalate (PET) film,
Various plastic films such as a polyethylene film and a polypropylene film and papers can be used. The thickness of the base sheet is suitably about 10 to 50 μm. A release layer may be provided on the side of the base sheet on which the ink receiving layer is provided so that the ink receiving layer for inkjet recording can be easily peeled off from the base sheet and transferred. Also, when storing the pressure-sensitive transfer material of the present invention wound in a roll shape, the back surface of the base sheet so that the ink receiving layer or the pressure-sensitive adhesive layer and the back surface of the base sheet do not adhere to each other to cause blocking. May be provided with a release layer. A release layer may be provided on both sides of the base sheet. As a release agent for the release layer, for example, a silicone resin, a fluororesin or the like can be used. A commercially available base sheet coated with a release agent can also be used. For example, in the case of a paper base sheet, 40 GW (trade name, Honshu Paper Co., Ltd.)
50RLW-01 for plastic base sheet
(Trade name, manufactured by Honshu Paper Co., Ltd., having a PET film as a base sheet).

As a material such as a binder resin for the ink-receiving layer for ink-jet recording provided on the base sheet, various materials conventionally used for papers exclusively for ink-jet recording can be used.
21615, JP-A-10-12096, JP-A-10-71760, JP-A-10-193780
JP-A-10-195375, JP-A-10-195375
JP-A-309865, JP-A-10-309874, JP-A-10-310682, JP-A-10-33
No. 0601, JP-A-11-29738 and the like can be used.

As the binder resin for the ink receiving layer,
In particular, a mixture of a cationic polymer and an anionic polymer described in JP-A-9-221615 is preferably used. This mixture has excellent receptivity to ink jet recording inks, especially ink jet recording inks containing a water-soluble dye (particularly an anionic direct dye or acid dye) as a colorant.

Examples of the cationic polymer include polyamine, polyamine sulfone, polyvinylamine, polyvinylpyridine, polyethyleneimine, polyethyleneimine-epichlorohydrin reactant, polyamidoamine, polyacrylamide, polydiallyldimethylammonium chloride, and polyamidoamine-epichloroform. Examples thereof include hydrin resin, dicyanamide-formaldehyde resin, and urea-formaldehyde resin, and these can be used alone or in combination of two or more.

Among the above-mentioned cationic polymers, polyamines are preferable, and among the polyamines, general formula (I):

[0021]

Embedded image

[Wherein X is F, Cl, Br, I, C
O ₃ , HCO ₃ , HSO ₄ or OH, R is a group represented by H, OH or — (CH ₂ ) p-OH (where p is an integer of 1 to 10); An integer of 10 and n is an integer of 2 to 500].

Specific examples of the polyamine include PAP-2, KZ-125K (all manufactured by Senka Co., Ltd.) and Moulin Fix Conc # 3 represented by the general formula (I).
Dicyandiamide formalin condensate such as 00B (manufactured by Morin Chemical Industry Co., Ltd.), or PAP-1, PAL
And guanidine-based condensed polyamines such as -1 (all manufactured by Senka Co., Ltd.).

Examples of the anionic polymer include styrene-acrylic acid copolymer, polyacrylic acid, styrene-maleic anhydride copolymer, acrylate-acrylic acid copolymer, and salts thereof.
These anionic polymers can be used alone or in combination of two or more.

Among the anionic polymers, a styrene-acrylic acid copolymer is preferable. Specific examples of the styrene-acrylic acid copolymer include, for example, Joncryl 61J, Joncryl 62, and solids of Joncryl 62. Product, such as John Crill 679 (all manufactured by Johnson Polymer Co., Ltd.).

The cationic polymer has a function of mainly adsorbing a coloring agent in the ink for ink jet recording, and the anionic polymer has a function of mainly absorbing water, a solvent and the like in the ink. The proportion of the cationic polymer and the anionic polymer used is as follows.
The amount is preferably from 5 to 300 parts by weight, more preferably from 10 to 200 parts by weight, per 0 parts by weight. When the use ratio of the anionic polymer is larger than the above range, that is, when the use ratio of the cationic polymer is small, the adsorptivity of the colorant in the ink for inkjet recording decreases, while the use ratio of the anionic polymer is in the above range. If the amount is smaller, the absorbability of water, a solvent and the like decreases, and in any case, the function of the ink jet recording ink as a receiving layer tends to decrease.

In the pressure-sensitive transfer material of the present invention, when the ink-receiving layer for ink-jet recording is peeled off from the base sheet at the time of transfer and is adhered to the recording medium without causing breakage or wrinkles, etc. In addition, at the end of the transfer operation, the ink receiving layer itself must be easily cut. For this purpose, it is necessary that the film has a certain strength and has good cutting properties. From this viewpoint, it is preferable that the ink receiving layer in the invention has a binder resin in which a filler composed of inorganic particles and / or organic particles is dispersed.

Examples of the filler include inorganic particles such as alumina, barium carbonate, magnesium carbonate, silica, zeolite, and talc, and organic particles such as melamine resin particles, urethane resin particles, and styrene-acryl resin particles. The average particle size of the filler is 0.005-5μ
m is preferable, and more preferably 0.05 to 0.5.
It is in the range of μm. When the average particle size is smaller than the above range, the effect of improving the cuttability is not sufficient. On the other hand, when the average particle size is larger than the above range, transferability to a recording medium is poor when a pressure-sensitive adhesive layer is not provided on the ink receiving layer. There is a tendency. In addition, inorganic particles having a primary average particle size of about 5 to 10 nm, such as colloidal silica and colloidal alumina, can also be used.

Particularly preferred organic particles are described in JP-A-9-2.
Complex type organic particles which can be produced from the cationic polymer and the anionic polymer described in Japanese Patent No. 21615. These organic particles have improved cuttability and excellent receptivity to ink for inkjet recording. As the cationic polymer constituting the organic particles, any of the above cationic polymers can be used, and as the anionic polymer, any of the above anionic polymers can be used. Among the cationic polymers, polyamines are preferable, and among these polyamines, the polyamines represented by the general formula (I) are preferable. Among the anionic polymers, styrene-acrylic acid Polymers are preferred. The proportions of the cationic polymer and the anionic polymer used are the same as described above, and the amount of the anionic polymer 5 to 100 parts by weight of the cationic polymer is 5%.
300 parts by weight are preferred, and more preferably 10 to 200 parts by weight.
It is in the range of parts by weight.

The particles comprising the cationic polymer and the anionic polymer can be produced, for example, as follows. First, the anionic polymer is uniformly dissolved in water. To this solution, a cationic polymer is added little by little to form a complex type organic particle structure of an anionic polymer and a cationic polymer. A dispersant (for example, a nonionic surfactant such as a polyoxyethylene derivative, an anionic surfactant, or a cationic surfactant) or a polymer dispersant (for example, a polymer surfactant such as a polymer ethylene oxide adduct) ), And finely disperse the complex type organic particle structure. The proportion of the polymer dispersant used is preferably about 0.5 to 50 parts by weight based on 100 parts by weight of the complex type organic particles.

When a pressure-sensitive adhesive layer is not provided on the ink receiving layer, it is preferable that the ink receiving layer itself has pressure-sensitive adhesive properties. For that purpose, an adhesive resin is used as the binder resin. As such an adhesive resin, an adhesive resin used for a pressure-sensitive adhesive layer described later can be used.

When a pressure-sensitive adhesive layer is provided on the ink receiving layer, any of the binder resins described in the above-mentioned publications can be used as the binder resin for the ink receiving layer. For example, acrylic resins, urethanes and the like can be used. Resin, rosin resin, vinyl ether resin, polyisobutylene resin,
Examples thereof include a vinyl chloride resin and a polyvinyl alcohol resin, and a mixture of a cationic polymer and an anionic polymer described in JP-A-9-221615 is particularly preferable. These binder resins can be used alone or in combination of two or more.

The weight ratio of the binder resin to the filler in the ink receiving layer is preferably from 1 / 0.8 to 1/50. If the proportion of the filler is less than the above range, the cutting property is poor, while if it is too large, the film strength of the ink receiving layer tends to decrease.

In the ink receiving layer, various other additives can be appropriately compounded.

The thickness of the ink receiving layer varies depending on whether monochrome printing or color printing is performed, but generally the thickness is preferably in the range of 2 to 50 μm.

The ink receiving layer can be formed by a conventionally known method. For example, a coating solution obtained by mixing and dispersing a filler in an organic solvent solution, an organic solvent dispersion, an aqueous solution or an aqueous dispersion (including an emulsion) of the binder resin is applied onto a base sheet or a release layer, and dried. Can be formed. When an aqueous coating liquid is used, water is used as a main component of the solvent, but alcohols can be used in combination for adjusting the viscosity.

In the present invention, a pressure-sensitive adhesive layer is provided on the ink receiving layer as required. Adhesive resin used for the pressure-sensitive adhesive layer is not particularly limited, for example, acrylic resin, rosin, rubber, vinyl ether resin,
Polyisobutylene type and the like can be mentioned. Particularly, an adhesive resin such as an acrylic resin or a rosin resin is preferable. Specifically, as an acrylic resin-based adhesive, Nicazole TS is used.
-910 (manufactured by Nippon Carbide Industry Co., Ltd.), Esdine # 7110 (manufactured by Sekisui Chemical Co., Ltd.), ARONTAC H
V-5200, ARONTAC A-1081H (all manufactured by Toa Gosei Chemical Industry Co., Ltd.) and the like.

The pressure-sensitive adhesive layer can be formed by applying an organic solvent solution, an organic solvent dispersion, an aqueous solution or an aqueous dispersion (including an emulsion) of the adhesive resin on the ink receiving layer and drying.

The thickness of the pressure-sensitive adhesive layer is 0.8 μm to 10 μm.
m is preferred.

In the present invention, the adhesive strength of the ink receiving layer (when no pressure-sensitive adhesive layer is provided) or the pressure-sensitive adhesive layer to the recording medium is 8 gf / 5 mm or more, and the adhesive strength to the back surface of the substrate sheet is 44 gf / It is preferably 5 mm or less. When the adhesive strength to the recording medium is less than the above range, the adhesive strength is insufficient, and local non-transfer tends to occur.
On the other hand, if the adhesive strength to the back surface of the substrate sheet exceeds the above range, the adhesive strength becomes excessive, and the pressure-sensitive transfer tape tends to be blocked when wound and stored in a roll shape, and particularly stored under high-temperature and high-humidity conditions. The tendency is strong when the paper is wound or when it is wound tightly. As a result, when a roll of pressure-sensitive transfer tape is used with a transfer tool of a hand-held type, the ink receiving layer or the pressure-sensitive adhesive layer tends to peel off at the time of unwinding, and a running defect tends to occur, making it difficult to use. is there.

Although the use form of the pressure-sensitive transfer material of the present invention is not particularly limited, it is usually used in the form of a pressure-sensitive transfer tape. As a transfer tool for transferring the ink receiving layer to a desired recording medium using the pressure-sensitive transfer tape, a commercially available transfer tool for a pressure-sensitive transfer tape can be used. Further, the pressure-sensitive transfer tape can be used without using a transfer tool. Further, the pressure-sensitive transfer material of the present invention is transferred using, for example, a material cut to an appropriate size according to a desired size of a recording medium or a desired transfer portion. You can also.

[0042]

EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.

In the following examples, as a base sheet, a paper base sheet of 40 GW (trade name, manufactured by Honshu Paper Co., Ltd., both-side release treatment) and a plastic base sheet of 50 RLW-01 (commercially available) Name, Honshu Paper Co., Ltd., PET film with both sides released
Was used. As the inorganic particles in the ink receiving layer,
Alumina (primary average particle diameter 0.1 μm), silica (primary average particle diameter 0.1 μm), and zeolite (primary average particle diameter 0.1 μm) were used. As the organic particles, those produced by the following method were used. As a binder resin, Nicazole TS-9 is used as an acrylic resin-based adhesive.
10 (manufactured by Nippon Carbide Industry Co., Ltd.), Esdine # 7
110 (manufactured by Sekisui Chemical Co., Ltd.).

<Production of Organic Particles> 10 parts by weight of a polyamine (PAP-2, manufactured by SENKA CORPORATION), 10 parts by weight of a styrene-acrylic acid copolymer (Johncryl 61J, manufactured by Johnson Polymer Co., Ltd.), a dispersant Using 2 parts by weight of Emulgen A-60 (manufactured by Kao Corporation), complex-type organic particles having an average particle diameter of 0.3 μm were produced according to the above-mentioned production method.

<Preparation of Coating Solutions 1 to 24 for Ink Receiving Layer>
The binder resin, inorganic particles, and organic particles were mixed in water (ion-exchanged water) at a weight ratio shown in Table 1 and dispersed in a basket mill to prepare coating liquids 1 to 24 having a solid concentration of 50% by weight. .

Examples 1 to 48 The coating liquids 1 to 24 obtained above were applied on the base sheet and dried to form a 13 μm thick ink receiving layer for ink jet recording. A pressure-sensitive transfer material was obtained.

[0047]

[Table 1]

A pressure-sensitive transfer tape obtained by slitting each of the pressure-sensitive transfer materials for ink jet recording obtained in Examples 1 to 48 into a width of 5 mm was mounted on a commercially available pressure-sensitive transfer tape transfer tool, and was used for general-purpose copy paper. Alternatively, the image was transferred to a normal postcard (one having no suitability for inkjet printing), and the adhesiveness and cutability at that time were evaluated according to the following criteria. Further, a voice signal is printed on the transferred ink receiving layer by an inkjet printer (PM-800C manufactured by Seiko Epson Corporation),
Print dot reproducibility was evaluated according to the following criteria. Example 1
Tables 2 and 3 show the results when the 48 ink-jet recording pressure-sensitive transfer materials were transferred to general-purpose copy paper, and Tables 4 and 4 show the results when they were transferred to ordinary postcards (those having no inkjet printing suitability). It is shown in Table 5.

For comparison, general-purpose copy paper and ordinary postcards (those not suitable for inkjet printing)
A sound signal was printed directly by the above-mentioned ink jet printer, and print dot reproducibility was evaluated (Comparative Examples 1 and 2).
The results are shown in Tables 3 and 5.

<Evaluation Criteria> Adhesiveness A: Good adhesion as a whole (does not come off even if scratched with nails) A ': Good adhesion as a whole (partially peeled off when scratched with nails) B: Partially adhered Not used (use level) C: Most do not adhere (cannot be used)

A: Easy to cut and easy to cut A ': Easy to cut B: Partially unable to cut (use level) C: Cannot cut (not usable)

Reproducibility of Print Dots An audio signal printed on the ink receiving layer was read by a scan talk reader R300 (manufactured by Olympus Optical Industries, Ltd.) to check whether or not it could be reproduced as audio.

A: Audio signal can be read and reproduced as audio B: Audio signal cannot be read and audio cannot be reproduced

[0054]

[Table 2]

[0055]

[Table 3]

[0056]

[Table 4]

[0057]

[Table 5]

[0058]

As is clear from the results of Tables 2 to 5, the pressure-sensitive transfer material for ink jet recording of the present invention (Examples 1 to 4)
When the audio signal is printed by an inkjet printer after transferring 8) to a general-purpose copy paper or a normal postcard having no inkjet print suitability, the printed audio signal can be read with good dot reproducibility, and the audio can be reproduced. Further, the pressure-sensitive transfer material for ink jet recording of the present invention has good transferability (adhesion) and cutability.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shuichi Nagahata 138-1 Kokubunji, Okunino-cho, Himeji-shi, Hyogo FE21 FF04 FG04X GA17

Claims (5)

[Claims] 1. A pressure-sensitive transfer material for ink-jet recording, wherein a pressure-sensitive transfer layer including at least an ink-receiving layer for ink-jet recording is provided on one side of a base sheet. 2. The pressure-sensitive transfer material for ink-jet recording according to claim 1, wherein the ink receiving layer has a pressure-sensitive adhesive property. 3. The pressure-sensitive transfer material for ink-jet recording according to claim 1, further comprising a pressure-sensitive adhesive layer provided on said ink receiving layer. 4. The ink receiving layer according to claim 1, wherein the ink receiving layer comprises a binder resin,
It is composed of at least one of inorganic particles and organic particles, and has a binder resin / particle weight ratio of 1 / 0.8.
The pressure-sensitive transfer material for ink jet recording according to any one of claims 1 to 3, wherein the pressure-sensitive transfer material is at most 1/50. 5. A release layer is provided on the surface of the base sheet opposite to the side on which the ink receiving layer is provided and / or between the base sheet and the ink receiving layer. The pressure-sensitive transfer material for ink-jet recording according to claim 1.