JP2000001044A - Method for ink jet printing and intermediate image receiving medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a water resistance, a light resistance and a wear resistance without impairing a drape of an image receiving sheet by providing a releasable image receiving layer on a base material as an intermediate image receiving medium, developing adhesive properties by giving water or a solvent to the layer, and transferring only the layer printed onto the sheet by a pressure. SOLUTION: As the intermediate image receiving medium 1, an image receiving layer releasable from at least a base material is provided on the material. The layer 1 for developing adhesive properties by moistening a surface of the layer with water or a solvent after an image is printed and swelling or dissolving it is used. At the time of printing the image, a desired image is printed in the form of a mirror image on the layer of the medium 1, thereafter the water or the solvent is given to the layer to develop its adhesive properties, and only the image is transferred to an image receiving sheet 2 by a pressure of a transfer roll 5 or the like. Thus, a wear resistance, a water resistance and a light resistance can be improved while a drape of the sheet 2 remains as it is.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a method and a medium for forming an image using an ink jet printer.

[0002]

2. Description of the Related Art Ink jet printers are used in various fields such as computer output, proof, signboards, posters, and other signs. Usually, a paper or a paper or a film provided with a layer for receiving an ink is used as the image receiving paper, but the printed image has low resistance such as water resistance and light resistance. When used in the sign field, a film is laminated on the printed surface to improve the resistance, but although the resistance is improved,
Often the texture of the receiving paper is impaired.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a printing method which does not impair the texture of an image receiving paper and at the same time improves water resistance, light resistance and abrasion resistance. And a medium used for the same.

[0004]

Means for Solving the Problems A first invention of the present invention is:
In a method in which an intermediate image receiving body including at least a substrate and an image receiving layer is printed once by inkjet printing, and only the printed image receiving layer is transferred to an image receiving paper, the substrate (11) is used as the intermediate image receiving body (1). Provided at least with an image receiving layer (12) that can be peeled off from the substrate, and the image receiving layer (12)
By giving water or a solvent to express the adhesiveness,
The image receiving layer (1) printed on the image receiving paper (2) by pressure
This is an inkjet printing method characterized by transferring only 2).

According to a second aspect of the present invention, there is provided an ink jet printing method in which an intermediate image receiving body comprising at least a substrate and an image receiving layer is printed once, and only the printed image receiving layer is transferred to an image receiving paper. In the image receiving body, as the intermediate image receiving body, at least an image receiving layer (12) detachable from the substrate is provided on the substrate (11), and the image receiving layer (1) is provided.
An intermediate image receiving body (1) characterized in that the adhesiveness is developed by giving water or a solvent to 2) and only the image receiving layer (12) printed on the image receiving paper (2) is transferred by pressure. is there.

According to the first aspect of the present invention, in the first aspect, water or a solvent is jetted from an ink jet nozzle head (3) in the same manner as the ink to supply water or a solvent to the image receiving layer (12). Is an inkjet printing method.

According to the first aspect of the present invention, there is provided the ink jet printing method according to the first aspect, wherein the water or the solvent is supplied to the image receiving layer (12) by a watering roll (4). It is.

Further, according to the second aspect of the present invention, in the intermediate image receiving body (1), the base material (11) / the image receiving layer (1) is provided.
5. The intermediate image receiving body according to claim 4, wherein the image receiving layer includes an ultraviolet absorbing material.

Further, according to the second aspect of the present invention, in the intermediate image receiving body (1), the base material (11) / the image receiving layer (1) is provided.
The intermediate image receiver according to claim 4 or 5, wherein the image receiving layer (12) contains a slip agent in the configuration of (2).

[0010] In the second aspect of the present invention, the intermediate image receiving member (1) may further include a substrate (11) / a release layer (1).
3) The intermediate image receiving body according to claim 4, wherein the intermediate image receiving body has a configuration of an image receiving layer (12).

The present invention also provides the intermediate image receiving body (1) having the structure of the base material (11) / release layer (13) / image receiving layer (12) according to the second invention, wherein the release layer (13) and the image receiving layer are provided. The intermediate image receiving body according to claim 7, wherein both or either one of (12) and (14) contains an ultraviolet absorber.

In the second aspect of the present invention, in the intermediate image receiving body (1) having the structure of the substrate (11) / release layer (13) / image receiving layer (12), a slip agent is added to the release layer (13). The intermediate image receiving body according to claim 7 or claim 8, comprising:

Further, according to the second aspect of the present invention, in the intermediate image receiving body (1), the base (11) / the release layer (1) is provided.
4) / release layer (13) / image receiving layer (12)
The intermediate image receiving member according to claim 4, wherein the intermediate image receiving member is separated between the release layer (14) and the release layer (13).

Further, according to the second aspect of the present invention, there is provided the intermediate image receiving member (1) having the structure of the substrate (11) / release layer (14) / release layer (13) / image receiving layer (12). The intermediate image receiving body according to claim 10, wherein both or one of the layer (13) and the image receiving layer (12) contains an ultraviolet absorber.

Further, according to the second aspect of the present invention, there is provided the intermediate image receiving member (1) having the structure of the substrate (11) / release layer (14) / release layer (13) / image receiving layer (12). 13. The intermediate receiver according to claim 11, wherein the layer (13) contains a slip agent.

Further, according to the second aspect of the present invention, there is provided the intermediate image receiving body (1) having the structure of the substrate (11) / release layer (14) / release layer (13) / image receiving layer (12). 14. The intermediate image receiver according to claim 11, wherein the mold layer (14) contains a matting agent.

Further, according to the present invention, in the second aspect, the image receiving layer (1) of the substrate (11) used for the intermediate image receiving body (1) is provided.
The intermediate image receiving body according to any one of claims 4 to 13, wherein the surface of the surface coated with 2) is matted.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An ink jet printing method and an intermediate image receiving body of the present invention will be described below in detail based on one embodiment. FIG. 1 is a schematic view of a main part in a case where an ink jet nozzle head is used in the ink jet printing method of the present invention in the same manner as an ink to supply water or a solvent to an image receiving layer, and FIG. FIG. 4 is a schematic view of a main part when a sponge roll is used as a watering roll to supply water or a solvent to an image receiving layer by a printing method. 1 to 2, 1 is an intermediate image receiving body, 11 is a base material, 12 is an image receiving layer, 13 is a release layer, 14 is a release layer, 2 is an image receiving paper, 3 is an ink jet nozzle head, and 4 is a watering roll. Reference numerals 5 and 5 are transfer rolls. The present invention relates to an ink jet printer, wherein at least a substrate (11),
A desired image is printed on the image receiving layer (12) in the form of a mirror image on the intermediate image receiving body (1) composed of the image receiving layer (12) that can be peeled off from the substrate, and after the image is printed on the image receiving layer (12). , Water or a solvent to develop adhesiveness, and transfer only the image receiving layer (12) to the image receiving paper (2) by the pressure of the transfer roll (5) or the like, thereby printing while maintaining the texture of the image receiving paper. And an intermediate image receiving body (1) used in the printing method. After printing the image, water or
As a method of applying the solvent, one of the ink jet nozzle heads (3) of the ink jet printer sprays water or a solvent as the last ink onto the entire surface, only the image portion, or applies a sponge roll on the entire surface. Is preferred. The structure of the intermediate image receiving body (1) of the present invention is as follows: substrate (11) / image receiving layer (12) substrate (11) / release layer (13) / image receiving layer (12) substrate (11) / release layer (14) / release layer (13) / image receiving layer (12).

The substrate (11) is made of a film such as polyethylene, polypropylene, acrylic, polyethylene terephthalate, polyethylene naphthalate, polyvinyl chloride, polystyrene, polycarbonate, polyimide, cellophane, celluloid, triacetyl cellulose, synthetic paper,
Use paper or paper obtained by subjecting olefin or the like to rudder processing (extrusion coating) or bonding.

The image receiving layer (12) is made of unmodified or modified polyvinyl alcohol, polyester, acrylic, urethane,
Vinegar, albumin, gelatin, casein, starch,
One or more of SBR latex, NBR latex, cellulosic resin, polyamide, melamine, acrylamide, polyvinylpyrrolidone, those cationically modified, and those having a hydrophilic group added, are used. Further, silica, clay, talc, diatomaceous earth, zeolite, calcium carbonate, alumina, zinc oxide, titanium white and the like may be added. After printing the image, the surface of the image receiving layer is wetted with water or a solvent, and swells or dissolves to develop adhesiveness. Depending on the resin used, a solvent that wets the surface is selected. Usually, the thickness is 1 μm to 20 μm.

The release layer (1) used in the above configuration (1)
3) is a cellulose derivative, a styrene resin, a styrene copolymer resin, an acrylic resin, a methacrylic resin, a rosin ester resin, a polyvinyl acetate resin, a polyvinyl chloride, a vinyl chloride-vinyl acetate copolymer, an ethylene-vinyl acetate copolymer, One or more of polyester resin, polyurethane resin, butyral resin, polyamide resin, petroleum resin, chlorinated rubber, chlorinated polyolefin resin, and epoxy resin are used. When an isocyanate is added to the above resin and reacted, a tough film can be obtained. Further, those obtained by curing a monomer or oligomer with an electron beam, ultraviolet light, or heat can also be used. Silica, clay, talc, diatomaceous earth, zeolite, calcium carbonate, alumina, zinc oxide, titanium white and the like may be added. Normal thickness 0.5μm ~ 10μ
m.

The release layer (14) having the above structure uses a silicone resin, an acrylic resin, a melamine resin, an epoxy resin, a fluororesin, or the like. Normal thickness 0.1μm-5
μm.

In order to improve the light fastness, the image receiving layer (12) has the structure (1), and the release layer (1) has the structure (2).
3) An ultraviolet absorber is added to one or both of the image receiving layer (12).

In order to improve the abrasion resistance, in the configuration (1), the image receiving layer (12) is provided, and in the configuration (2), the release layer (1) is provided.
3) Add a slip agent. Examples of the slip agent include wax, especially polyethylene wax, silicone oil, silicone powder, fluorine powder and the like.

In order to change the surface condition of the transferred image receiving layer (12) or release layer (13), in the case of (1), a surface mat for coating the image receiving layer (12) of the substrate (11) The image-receiving layer (1) having its shape transferred
2) or transfer to the surface of the release layer (13).
In the case of (1), there is a method of matting the release layer (14).

The image receiving paper (2) for transferring the image receiving layer (12) to the intermediate image receiving body (1) is made of plastic, non-woven fabric, cloth,
Various materials such as paper and synthetic paper can be used, and not only a film-shaped material but also any material can be used as long as the image-receiving layer (12) can be transferred by pressure with a transfer roll (5) or the like.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below.

Example 1 As an intermediate image receiver, a polypropylene film was coated with an acrylic resin, which was cationically modified with a quaternary ammonium salt and modified with vinylpyrrolidone as a hydrophilic group, to a thickness of 10 μm, and an inkjet ink having the specifications shown in FIG. Using a printer, first print the desired image as a mirror image on the intermediate receiver, then apply water to the surface of the image receiving layer with the final inkjet nozzle head in a solid pattern, and before the image receiving layer dries, apply the image receiving layer to paper. Transfer was performed by applying pressure with a transfer roll. As a result, a good image could be obtained.

<Embodiment 2> As an intermediate image receiving body, Embodiment 1
First, a desired image is printed as a mirror image on the intermediate receiver using an ink jet printer having the specifications shown in FIG. 2 and water is applied to the entire surface of the image receiving layer with a sponge roll immediately thereafter. Before drying, the image receiving layer was transferred to the paper by applying pressure with a transfer roll. As a result, a good image could be obtained.

<Embodiment 3> As an intermediate image receiving body, Embodiment 1
Using a commercially available ink jet printer (DesignJet 2500CP: manufactured by Hewlett-Packard Co.), a desired image is first printed as a mirror image on the intermediate image receiver, and water is applied to all image receiving layer surfaces by spraying. Before the image receiving layer was dried, the image receiving layer was transferred to paper by applying pressure with a laminator. As a result, a good image could be obtained.

Example 4 An intermediate image receiver was first coated on a polypropylene film, which had been cationically modified and a hydrophilic functional group-introduced polyurethane resin having a thickness of 10 μm, using the above-mentioned commercially available ink jet printer. After the desired image is printed as a mirror image on the surface, a mixed solvent of toluene and isopropyl alcohol (IPA) is applied to the surface of the image receiving layer, and before the image receiving layer dries, the image receiving layer is transferred onto a polyester cloth by applying pressure with a transfer roll. Was. As a result, a good image could be obtained, and at the same time, the texture of the cloth could be left as it was.

Example 5 As an intermediate image receiver, a polypropylene film was coated with a polyurethane resin having a cation-modified and hydrophilic functional group introduced thereto by 10 μm using a commercially available ink-jet printer. After a desired image was printed as a mirror image on the surface of the substrate, a mixed solvent of toluene and IPA was applied to the surface of the image receiving layer, and before the image receiving layer dried, the image receiving layer was transferred to the polyester film by applying pressure with a transfer roll. As a result, a good image could be obtained.

Example 6 As an intermediate image receiving member, a polypropylene film was coated with a polyurethane resin having been subjected to cation modification and having a hydrophilic functional group introduced therein to a thickness of 10 μm by using the above-mentioned commercially available ink jet printer. After the desired image was printed as a mirror image on the surface of the paper, water was applied to the surface of the image receiving layer, and the image receiving layer was transferred to paper by applying pressure with a transfer roll before the image receiving layer dried. As a result, a good image could be obtained.

Comparative Example 1 The cation-modified polyurethane resin having a hydrophilic functional group introduced therein used in Example 6 was
Using a commercially available inkjet printer, a desired image was printed on the paper directly coated with 0 μm paper. A good image could be obtained.

Example 7 As an intermediate image receiving body, polyethylene wax (resin ratio: 5 parts) and ultraviolet absorber Tinuvin 328 (resin ratio) were used in a polyurethane resin obtained by cationically modifying a polypropylene film and introducing a hydrophilic functional group. 5 parts) to the coated 10 μm coated, using the above-mentioned commercially available inkjet printer, first print a desired image as a mirror image on the intermediate image receiving body, then give water to the image receiving layer surface,
Before the image receiving layer dried, the image receiving layer was transferred to paper by applying pressure with a transfer roll. As a result, a good image could be obtained.

Example 8 As an intermediate image receiver, a polyethylene terephthalate film was coated with a methyl methacrylate resin at 1 μm, and then a cation-modified polyurethane-based resin having a hydrophilic functional group introduced at 10 μm was coated on the polyethylene terephthalate film. First, a desired image is printed as a mirror image on the intermediate image receiving body using an ink jet printer, water is applied to the surface of the image receiving layer, and before the image receiving layer dries, the image receiving layer is transferred to paper by applying pressure with a transfer roll. Was. As a result, a good image could be obtained.

Example 9 As an intermediate image receiver, a polyethylene terephthalate film obtained by adding a polyethylene methacrylate resin to a polyethylene methacrylate resin (to a resin ratio of 5 parts) and an ultraviolet absorber Tinuvin 328 (to a resin ratio of 5 parts) was 1 μm. Next, a polyurethane-based resin having a cation-modified and hydrophilic functional group introduced therein is sequentially coated at 10 μm, and a desired image is first printed as a mirror image on the intermediate image receiver using the above-mentioned commercially available ink jet printer, and then water is received. Before the image-receiving layer dries, the image-receiving layer is transferred to paper by applying pressure with a transfer roll. As a result, a good image could be obtained.

Example 10 As an intermediate image receptor, an acrylic melamine resin was applied to a polyethylene terephthalate film at a thickness of 1 μm, heat cured, and then a methyl methacrylate resin was applied at a thickness of 1 μm and then cationically modified to obtain a hydrophilic functional group. Using a commercially available inkjet printer, first print a desired image as a mirror image on the intermediate image receiving body on a 10 μm sequentially coated with the introduced polyurethane resin, and then apply water to the surface of the image receiving layer, before the image receiving layer dries. Then, the image receiving layer was transferred to paper by applying pressure with a transfer roll. As a result, a good image could be obtained.

Example 11 As an intermediate image receptor, an acrylic melamine resin was applied to a polyethylene terephthalate film at a thickness of 1 μm, cured by heat, and then a methyl methacrylate resin and polyethylene wax (5 parts by resin ratio).
And a UV-absorbing agent Tinuvin 328 (resin ratio: 5 parts) was added at 1 μm, and then a cation-modified polyurethane-based resin having a hydrophilic functional group introduced thereto was applied at 10 μm in order, using the above-mentioned commercially available inkjet printer. First, after a desired image was printed as a mirror image on the intermediate image receiving member, water was applied to the surface of the image receiving layer, and before the image receiving layer dried, the image receiving layer was transferred to paper by applying pressure with a transfer roll. As a result, a good image could be obtained.

<Example 12> As an intermediate image receiving body, a polyurethane resin having a cationic surface modified with a matte surface polypropylene film and having a hydrophilic functional group introduced thereinto was 10 µm thick.
First, after printing the desired image as a mirror image on the intermediate image receiver using the commercially available ink jet printer, water is applied to the surface of the image receiving layer, and before the image receiving layer dries, the image receiving layer is applied to paper. Transfer was performed by applying pressure with a transfer roll. As a result, it was possible to obtain an image having a good matte tone without gloss.

Example 13 As an intermediate image receiving body, a polyethylene terephthalate film having a matte surface was coated with a methyl methacrylate resin at 1 μm, and then a cation-modified polyurethane resin having a hydrophilic functional group introduced at 10 μm.
First, after printing the desired image as a mirror image on the intermediate image receiver using the above-mentioned commercially available ink jet printer, water is applied to the surface of the image receiving layer, and before the image receiving layer dries, the image receiving layer is formed on paper. Was transferred by applying pressure with a transfer roll. As a result, it was possible to obtain an image having a good matte tone without gloss.

Example 14 As an intermediate image receiver, an acrylic melamine resin was applied to a polyethylene terephthalate film having a matte surface at a thickness of 1 μm, thermally cured, and then a methyl methacrylate resin was applied at 1 μm and then cationically modified. To a 10 μm sequentially coated polyurethane resin with a hydrophilic functional group introduced, using the above-mentioned commercially available ink jet printer, first print a desired image in a mirror image on the intermediate image receiver, and then give water to the image receiving layer surface, Before the image receiving layer dried, the image receiving layer was transferred to paper by applying pressure with a transfer roll. As a result, it was possible to obtain an image having a good matte tone without gloss.

Example 15 As an intermediate image receiving body, a polyethylene terephthalate film obtained by adding a matting agent (resin ratio: 5 parts) to an acrylic melamine resin was applied in a thickness of 1 μm, thermally cured, and then a methyl methacrylate resin was applied thereon. 1 μm, then cationically modified and coated with 10 μm of a polyurethane resin having a hydrophilic functional group introduced thereon, using the above-mentioned commercially available ink jet printer, first printing a desired image as a mirror image on the intermediate image receiver, Water was applied to the surface of the image receiving layer, and before the image receiving layer dried, the image receiving layer was transferred to paper by applying pressure with a transfer roll. As a result, it was possible to obtain an image having a good matte tone without gloss.

Here, the comparative example 1 and the examples 6 to 11 were subjected to comparative tests for water resistance, light resistance, and abrasion resistance. Water resistance was determined by bleeding of an image 24 hours after a water drop was dropped, light resistance was measured by a fade meter at 0.25 W for 24 hours and the degree of discoloration was evaluated by a fade meter.
The change in the image after 100 times of friction with a g load was evaluated. The criteria for the evaluation were visually evaluated in the following five stages. 1: Original image disappearance 2: Severe change 3: Change 4: Slight change 5: No change The evaluation results are shown in Table 1.

[0045]

[Table 1]

[0046]

According to the printing method of the present invention, as is clear from the above results, it is possible to improve the abrasion resistance, water resistance and light resistance, which were the weak points of the conventional ink jet printing.
Further, since only the image receiving layer is transferred, there is no need to perform special processing on the image receiving paper, and even if the image is printed on flexible image receiving paper such as cloth, the texture of the material is not lost. In addition, the image receiving paper can be printed on a film or a thick sheet.

[Brief description of the drawings]

FIG. 1 is a schematic view of a main part when an ink jet nozzle head is used in the ink jet printing method of the present invention to supply water or a solvent to an image receiving layer in the same manner as an ink.

FIG. 2 is a schematic view of a main part when a sponge roll is used as a watering roll to supply water or a solvent to an image receiving layer in the inkjet printing method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Intermediate image receiver 11 ... Substrate 12 ... Image receiving layer 13 ... Release layer 14 ... Release layer 2 ... Image receiving paper 3 ... Inkjet nozzle head 4 ... Watering roll 5 ... Laminating roll

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuichi Matsumoto 1-5-1, Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd. F-term (reference) 2C056 EA13 FD13 2H086 BA02 BA05 BA12 BA15 BA26 BA31 BA38 BA52 BA53

Claims (14)

[Claims] 1. A method of printing on an intermediate image receiving body comprising at least a base material and an image receiving layer by ink jet printing, and transferring only the printed image receiving layer to image receiving paper. Ink jet characterized by providing at least an image receiving layer that can be peeled off from the substrate, giving water or a solvent to the image receiving layer to develop adhesiveness, and transferring only the image receiving layer printed on image receiving paper by pressure. Printing method. 2. The ink-jet printing method according to claim 1, wherein water or a solvent is jetted from an ink-jet nozzle head to supply water or a solvent to the image receiving layer, similarly to the ink. 3. The ink-jet printing method according to claim 1, wherein the water or the solvent is supplied to the image receiving layer by a watering roll. 4. An intermediate image receiving member used in a method of printing on an intermediate image receiving member comprising at least a base material and an image receiving layer by ink jet printing, and transferring only the printed image receiving layer to image receiving paper. As a body, an image receiving layer that can be peeled off from at least the substrate is provided on the substrate, and water or a solvent is applied to the image receiving layer to develop adhesiveness, and only the image receiving layer printed on the image receiving paper by pressure is transferred. An intermediate image receiving body characterized in that: 5. The intermediate image receiving member according to claim 4, wherein the intermediate image receiving member has an arrangement of a base material / image receiving layer, and the image receiving layer contains an ultraviolet absorbing material. 6. The intermediate image receiving member according to claim 4, wherein the intermediate image receiving member has a structure of a substrate / image receiving layer, and the image receiving layer contains a slip agent. 7. The intermediate image receiving member according to claim 4, wherein the intermediate image receiving member has a configuration of base material / peeling layer / image receiving layer. 8. The intermediate image receiving body according to claim 7, wherein the intermediate image receiving body having the structure of base material / release layer / image receiving layer contains an ultraviolet absorbing material in at least one of the release layer and the image receiving layer. . 9. An intermediate image receiving member having a structure of a substrate / release layer / image receiving layer, wherein the release layer contains a slip agent.
Or the intermediate image receptor according to claim 8. 10. The intermediate image receiving body according to claim 4, wherein the intermediate image receiving body has a configuration of a base material / a release layer / a release layer / an image receiving layer, and is separated between the release layer and the release layer. 11. An intermediate image receiving body having a structure of a base material / a release layer / a release layer / an image receiving layer, wherein the release layer and / or the image receiving layer contains an ultraviolet absorber. Intermediate receiver. 12. The intermediate image receiving body according to claim 11, wherein the intermediate layer comprises a substrate, a release layer, a release layer, and an image receiving layer, and the release layer contains a slip agent. 13. The intermediate image receiving member according to claim 11, wherein the intermediate layer has a matting agent in the release layer in the structure of a substrate / release layer / release layer / image receiving layer. 14. The intermediate image receiving body according to claim 4, wherein the surface of the surface of the substrate used for the intermediate image receiving body on which the image receiving layer is coated is matted.