JPS62130876A - Recording method - Google Patents

Abstract

PURPOSE:To provide a recording method by which water resistance, solvent resistance, abrasion resistance and luster can be imparted, by laminating a print protective member comprising a solvent type thermoplastic resin and an aqueous type thermoplastic resin on an image recorded in a recording liquid, and after adhering the protective member to the image by pressing, releasing a base to leave a transfer layer on the image. CONSTITUTION:A pair of pressure rollers 128 incorporating respective heaters 129 press a recording paper 102 and a print protective member 122 (which are fed through a pair of feeding rollers 127) against each other while heating. The recording paper 102 to which the print protective member 122 has been adhered by passing through the pair of pressure rollers 128 is passed through a pair of discharging rollers 132, and collides against a separating pawl 134, whereby a base and the recording paper with a transfer layer transferred thereto are perfectly separated from each other. After this separation, the base of the member 122 is slid on the upper side of the pawl 134, and is discharged onto a discharging tray 135, whereas the recording paper 102 with the transfer layer transferred thereto and provided with luster is discharged onto a lower discharging tray 133.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording method using a recording liquid, particularly an inkjet recording method.

[Conventional technology]

The inkjet recording method is a recording method in which small droplets of recording liquid are deposited onto a recording material such as paper from the orifice of a recording head, and it generates little noise and does not require special fixing treatment. It is attracting attention as a recording method that can perform high-speed recording and full-color recording.

The recording liquid used in this ink jet recording method is generally formed from a recording agent such as a dye, and water as a solvent or a mixture of water and various solvents.

In this way, in the inkjet recording method, since an aqueous recording liquid is used, the recording material used for recording has a problem with the absorption and fixing properties of the recording liquid, such that it adheres to the recording material. Since the amount of recording liquid is also large, it is required that the recording liquid be particularly excellent in absorbing and fixing properties.

As a recording material that has failed due to these characteristics.

It is known that a recording liquid receiving layer made of a porous material with excellent recording liquid absorption and fixing properties is provided on a base material such as paper.

On the other hand, in the case of a recording material having a porous recording liquid receptive layer, the surface of the recording material lacks gloss, and even images recorded on the ribs impair the -T brightness of the image when visually observed. In particular, when recording a multicolor image using an inkjet recording method to form a color print,
There were two problems that needed to be resolved.

Moreover, in the prints formed in this way,
Since water-soluble dyes are mainly used as recording agents, the water resistance, solvent resistance, and abrasion resistance of recorded images have not always been sufficient.

Therefore, in order to impart gloss, water resistance, solvent resistance, and abrasion resistance to recorded images, lamination processing has been performed on the printed surface.

Lamination processing involves placing a print protection member on a base material such as paper, cloth, or plastic film, which is made by carrying a transfer material mainly made of thermoplastic resin such as acrylic resin, polystyrene resin, polyester resin, or polyethylene, on the printed surface. A method of applying gloss, water resistance, solvent resistance, and abrasion resistance to the print surface by bringing the transfer material side into close contact with the material and press-bonding the material, and then separating the base material and leaving the transfer material to remain on the recording material. It is.

At this time, the thermoplastic resin used for the transfer material has blocking resistance so that it will not block when stacking multiple laminated prints during storage and transportation, and has anti-blocking properties that prevent laminated prints from being bent during handling. At the same time, it is necessary to satisfy performance such as folding resistance so that the transfer material will not be destroyed.

Furthermore, the transfer material after lamination must have sufficient adhesive strength with the printed surface.

At present, a recording method that satisfies all of these characteristics has not yet been obtained.

[Problem that the invention seeks to solve]

Therefore, the invention was made in view of the above-mentioned problems, and it is said that the recorded image obtained using the recording liquid has good folding durability, anti-blocking property, transferability to the recording surface, and adhesive property. The object of the present invention is to provide a recording method that imparts water resistance, solvent resistance, abrasion resistance, and gloss by applying a print protection member that has excellent properties.

[Means for solving problems]

The above object is achieved by the present invention as follows.

That is, the present invention has a base material and a transfer layer removably provided on the base material, and the transfer layer includes at least a solvent-based thermoplastic resin and a water-based thermoplastic resin. This is a recording method characterized in that after a VL layer is pressure-bonded onto an image recorded using a VL layer, the base material is shaken for a minute so that the transfer layer remains on the image.

[Effect]

Hereinafter, the present invention will be described in detail according to the drawings and examples.

FIG. 1 shows an example of a multicolor inkjet recording apparatus to which the recording method of the present invention is applied. In the figure, 101 is a recording paper cassette containing recording paper 102, and 103 is recording paper 10.
This is a paper feed roller that feeds paper 2. 104 is a pair of registration rollers; 105 and 106 are a pair of conveying rollers for conveying the recording paper 102; and 107, 108, 109°, 110 and 111 are conveyance guides for smooth conveyance of the recording paper 102. Reference numerals 112Y, 112M, 112C, and 112B are inkjet recording heads that eject yellow, magenta, cyan, and black color inks onto the recording paper 102, respectively. Reproduces and records color images using ink. These recording heads are, for example, recording paper 102.
It is configured as a so-called full multi-head, which is arranged in a full line in a direction substantially orthogonal to the conveying direction of the paper, that is, in a direction perpendicular to the paper surface in the figure.

Reference numeral 113 indicates a suction fan, and reference numeral 114 indicates a porous guide plate.
The flatness of the recording paper 102 is maintained by suctioning the recording paper 102.
and recording heads 112Y, 112M, 112C, 112B
Maintain the best distance between.

Examples of the recording paper 102 used here include wood valve paper 5 synthetic fiber paper, non-woven fabric, woven fabric, porous film and paper, cloth 1 synthetic resin film coated with pigments, adhesives, etc. It will be done.

Next, 121 is a cassette containing the print protection member 122, and 123 is a supply roller that supplies the print protection member 122.

The print protection member 122 is attached to the base material 201 as shown in FIG.
Transfer materials 202 and 203 are provided on the surface of the base material 201 so as to be removable from the base material 201.

Examples of the base material 201 include paper, cloth, plastic film, etc., and if desired, the surface has various release properties such as silicone resin, polyester resin, thermosetting resin, etc.! I
+ Those coated with a 12I treatment agent are suitable. Alternatively, a film that itself has peelability, such as a Mylar film or a polypropylene film, may be used.

Among these base materials, paper coated with a release treatment agent having various release properties such as silicone resin, polyester resin, thermosetting resin, etc. is particularly good because it is easy to distinguish it from the transfer resin layer when it is peeled off.

The thickness of the base material 201 is preferably 5 to 2000 JLm, preferably 10 to 50 JLm.

The transfer layer 204 consists of an upper layer 203 and a lower layer 202.

The lower layer 202 is a layer that is in contact with the base material 201, and is a layer that comes to the surface when the transfer layer 204 is transferred to a print.

The resin constituting the lower layer 202 is preferably a livestock-based thermoplastic resin such as butyral resin, acrylic resin, or polyester resin, with butyral resin being particularly suitable.

Among butyral resins, the average degree of polymerization is 150 to 9.
00, butyralization degree (butyral, 1mol1%) is 6
0 or more is preferable, especially 1 average degree of polymerization 200
~700. The average degree of polymerization of petitral butyral resin is 15
If it is less than 0, the folding durability and blocking resistance will be poor, and if it exceeds 900, the thermal meltability will be reduced, resulting in poor transferability.

Moreover, if the degree of butyralization is less than 60, folding durability becomes poor, which is not preferable.

As a combination system of butyral resin forming the lower layer of this transfer layer, reactants such as melamine resin, phenol resin, epoxy resin, incyanate, dialdehyde and/or melamine resin, phenol resin, epoxy resin, urethane resin, urea resin, Alcohol resistance can be improved by using alkyd resin, cellulose resin, vinyl resin, etc.

Further, waxes, a softening agent, an ultraviolet absorber, a light stabilizer, etc. may be added as necessary.

In particular, a small amount of plasticizer is preferred since it improves folding durability.

Examples of the solvent for dissolving and laminating the solvent-based thermoplastic resin on the substrate 201 include propyl alcohol, butanol, toluene, ethyl acetate, methyl ethyl ketone, aromatic esters, and ketones.

The thickness of the lower layer 202 is preferably 1 to 50 gm, preferably 3 to 30 gm.

The lower layer 202 is attached to the base material 201 so that it can be peeled off from the base material 201 when the transfer layer is transferred and laminated onto the recorded image screen of a print in which an image is formed using a recording liquid on a recording material such as a piece of paper. It is carried.

The upper layer 203 is laminated in close contact with the lower layer 202, and can be laminated with sufficient adhesive force on the surface of the recorded image surface.
It is composed of a water-based thermoplastic resin that can impart properties such as water resistance, abrasion resistance, and solvent resistance to recorded images.

Examples of water-based thermoplastic resins include vinyl acetate resin and its derivatives, polyethylene, ethylene-vinyl acetate copolymer,
Examples include ionomer resins, acrylic resins, polystyrene and its copolymers, polyisobutylene, hydrocarbon resins, polypropylene, polyethylene-polypropylene copolymer elastomer resins, polyamide resins, polyester resins, polyurethane resins, etc., but particularly preferred are dispersions and polyurethane resins. These are water-based olefin resins such as emulsion polyethylene, ethylene-vinyl acetate copolymer, ionomer resin, and polyethylene-polypropylene copolymer elastomer.

The upper layer 203 contains a surfactant if necessary.

Various additives such as plasticizers and tackifiers are added.

The thickness of the upper layer 203 is preferably 1 to 50 JLm, and suitably 3 to 30 km.

The print protection member of the present invention having such a structure is made of the above-mentioned base material and the material capable of forming the transfer layer, and has the following properties: releasability between the base material and the transfer layer, and removability between the transfer layer and the surface of the print to be protected. By selecting an appropriate material in consideration of butching, etc., and laminating the transfer layer forming material on the selected base material using a known method such as overcoating, blade coating, reverse roll coating, or gravure roll coating. Can be easily formed.

Note that the print protection member of the present invention protects one side of the print (
It is suitable for laminating only the image surface), so
If the transfer layer is attached to the print by heat treatment, the shrinkage rate of the transfer layer due to temperature change after the heat treatment is about the same as the yield rate of the print, or
It is preferable that the transfer layer is formed to such an extent that curling will not occur in the laminated print due to shrinkage of the transfer layer.

124 is a pair of print protection member registration rollers; 125;
Reference numeral 126 denotes a conveyance guide that facilitates conveyance of the print protection member. 127 is a pair of conveyance rollers, and as described later, the recorded recording paper 102 is placed in a cassette 121 on its recording surface.
The print protection members 122 supplied from the roller pair 127 are gripped in an overlapping state by the pair of rollers 127.

128 is a pair of pressure rollers with a built-in heater 129;
Recording paper 10 conveyed via conveyance roller pair 127
2 and the print protection member 122 are heat-pressed. That is, the print protection member 122 is placed on the recording surface of the recording paper 102.
is pasted. 130 and 131 are conveyance guides, 13
2 is a pair of discharge rollers, 133 and 135 are discharge trays, and 134 is a separation claw.

Print protection member 122 passes through pressure roller pair 128
The recording paper 102 to which is pasted passes through a pair of discharge rollers 132 and collides with a separation claw 134 where the print protection member 12
2, the base material (not shown) and the recording paper to which the transfer material has been transferred are completely separated. After the base material of the print protection member 122 separated in this manner slides on the upper side of the separation claw 134, the ejection tray 135 is ejected. Further, the glossy recording paper 102 to which the transfer layer has been transferred is discharged to a lower discharge tray 133.

At this time, the surface of the recording paper 102 to which the transfer layer has been transferred almost maintains the surface shape of the base material, and by using a base material with a desired surface roughness, the recording paper 102
Any glossy surface can be obtained on the surface. Further, since the transfer layer does not directly contact the pressure roller pair 128, troubles such as the transfer material adhering to the pressure roller pair 128 or getting caught in the pressure roller pair 128 can be avoided.

In the figure, Sl and S2 are arranged in front of the pair of transport rollers 127, and are used to detect the laminate material 122 and the recording paper 102, respectively (=y?, S3 is the recording head L12Y, 112M, 112c, 112B) After recording is performed, the recording paper 1 is conveyed toward the roller pair 106.
A sensor for detecting 02, S4 is a pair of transport rollers 10
This is a sensor for detecting the recording paper 102 fed out by the recording paper 5. Based on the detection outputs of these sensors S1 to S4, synchronization can be achieved when transporting the recording paper 102 and the print protection member 122.

In the above embodiments, the recording paper and the print protection member are both sheet materials, but either or both may be roll materials.

〔Example〕

Recording was carried out using the apparatus shown in FIG. 1 and print protection members 1 to 7 shown in Table 1.

Incidentally, a PET film coated process paper was used as the base material of the print protection member.

The evaluation results are summarized in Table 2. Evaluation was performed on the following items.

Folding durability: The sample was transferred and peeled onto an inkjet coated paper on which the print protection member was inkjet recorded, and the sample was bent 180° and evaluated by whether or not a single bent portion remained.

Transferability: After transferring the print protection member to inkjet coated paper that has been recorded with inkjet, when the base material of the print protection member is peeled off by hand, there is no problem such as snagging or loss of the image due to damage to the coat layer. Evaluation was made based on whether or not it could be peeled off smoothly.

Adhesion: In a 90° peel test between the transfer layer of the sample and coated paper for inkjet after transfer peeling, evaluation was made based on whether the adhesion was strong enough to cause destruction of the coated paper base material.

Recordability: Evaluation was made based on whether the clarity of images recorded using water-based ink on coated inkjet paper was improved by the lamination process.

〔effect〕

As described in detail above, according to the recording method of the present invention, any desired gloss can be imparted and fold durability can be improved.

To obtain recorded images with excellent water resistance, solvent resistance, abrasion resistance, and long-term storage stability, as well as excellent clarity.
2

[Brief explanation of drawings]

FIG. 1 is an internal configuration diagram showing an example of a recording apparatus to which the present invention is applied, and FIG. 2 is a sectional view showing the configuration of a print protection member used in the invention. 101... Recording paper cassette, 102... Recording paper, 1
03... Paper feed roller, 104... Registration roller pair, 105, LO6... Conveyance roller pair, 107.108, 109, 110. ill... Conveyance guide, 112Y, 112M, 112C, LL2B... Recording head, 113... Suction fan, 114... Porous guide plate,
121...Print protection member cassette, 122...
Print protection member, 123...Print protection member supply roller pair. 124...Print protection member registration roller pair, 12
5.126...Transportation guide. 127... Conveyance roller pair, 128... Pressure roller pair, 129... Heater, 130, 131... Conveyance guide, 132... Ejection roller pair, 133.135... Ejection tray, 134... ...Separation claw, S1-S4...Sensor, 201
... Base material, 204 ... Transfer layer, 202 ... Bottom
Layer, 203...upper layer.

Claims (4)

[Claims] (1) A print protection member having a base material and a transfer layer removably provided on the base material, and the transfer layer containing at least a solvent-based thermoplastic resin and a water-based thermoplastic resin, is recorded using a recording liquid. A recording method comprising: laminating and pressing the transfer layer on the image, and then separating the base material to leave the transfer layer on the image. (2) The recording method according to claim 1, wherein the transfer layer has a two-layer structure, the base layer containing a solvent-based thermoplastic resin, and the other layer containing a water-based thermoplastic resin. (3) The recording method according to claim 1, wherein the solvent-based resin is a butyral resin. (4) The recording method according to claim 1, wherein the water-based resin is a water-based olefin resin.