JPH10309876A - Resin layer forming unit and image forming system provided with the unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit for forming a resin layer on a print face while protecting the print face and performing waterproofing, lustering, and the like, at high speed and low cost and an image forming system for printing and forming a resin layer on a print face. SOLUTION: A unit for forming a resin layer 1 comprises means 10 for coating the print face of a recording medium 2 with a resin liquid 4 produced by dissolving a resin into a solvent, and means 20 for curing the resin liquid 4 and forms a resin layer on a print face. The resin liquid curing means 20 employs a solid material exhibiting swelling properties to the resin solvent or a liquid material having higher molecular weight than the solvent and exhibiting compatibility thereto as a contact material. Means for imparting a mat or emboss shape to the resin layer may also be provided. A printer (not shown) is disposed in front of the resin layer forming unit 1 and an image recorded by the printer is protected or subjected to waterproofing, lustering, and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin layer provided with a resin layer on a printing surface of a recording medium, for example, to provide a printing surface protection function such as waterproofing and an appearance improving function such as gloss appearance. The present invention relates to a forming apparatus and an image forming apparatus including the resin layer forming apparatus.

[0002]

2. Description of the Related Art Hereinafter, examples of disclosure of the prior art relating to a method for protecting a printed surface and problems thereof will be listed. JP-A-2-
The printing surface protection method disclosed in Japanese Patent No. 80279 is a method of applying an acrylic urethane-based resin-containing liquid to the printing surface and then pressing the film to protect the printing surface. It takes about one hour for heat treatment to dry the liquid to some extent, and such treatment is complicated and the equipment configuration becomes large-scale.
Further, there is a problem that a material cost is increased because a laminate film is required. Also, this method can be applied only to a printing surface using an aqueous ink.

A printing surface protection method disclosed in Japanese Patent Application Laid-Open No. 3-173646 discloses a method in which a first liquid and a second liquid containing a colorant are separately flown and the mixed ink is transferred to a printing surface. This method is to obtain the water resistance and weather resistance of the printing surface. However, if one dot is formed by flying two kinds of liquids, the dot diameter becomes large due to the misalignment of each droplet on the printing surface. Is reduced. Further, since the positional accuracy of the two droplets is required, there is a problem that the image quality is dependent on the thickness of the recording paper. Also, this method can be applied only to the recording method of the ink flying method.

A method for protecting a printed surface disclosed in Japanese Patent Application Laid-Open No. 4-24933 is a method of applying a varnish to a desired region of a printed surface, bonding a film before curing, and then peeling off the film to obtain a high gloss surface on the desired region. This is a method of attaching the film until the solvent of the varnish evaporates.
It takes as long as 15 hours at 0 ° C., and further requires a step of peeling the film. Therefore, there is a problem that it takes a lot of time and requires a complicated system.

[0005] A method for protecting a printed surface disclosed in Japanese Patent Application Laid-Open No. 5-269949 is disclosed in Japanese Patent Application Laid-Open No. 5-269949.
This is a method of applying glossiness and protecting the printed surface by thermocompression bonding the laminated film laminated with the adhesive layer containing the above to the printed surface, but heating to 100 ° C. at the time of bonding the laminated film to the printed surface. However, since a pressure of 35 kg / cm is required, a large-scale production line is required, and the material cost of the laminate film is high.

A printing surface protection method disclosed in Japanese Patent Application Laid-Open No. 8-39947 discloses a transfer type laminated film in which a laminate layer is applied to a substrate composed of a laminate of a polyester film and a matted polyolefin resin layer. It is a method of forming a mat-like laminate layer on the image forming surface of photographic paper, but the laminate film requires two types of films in addition to the laminate layer and an adhesive layer of this film, so the material cost is high. Further, the lamination on the printing surface is low in productivity at a low speed of 1 m / min, and a step of peeling the film is required thereafter. In addition, since the laminate layer is solid, there is a problem that adhesion is poor on a printing surface having a rough surface roughness.

[0007] The printing surface protection method disclosed in JP-A-54-120005 discloses a prepolymer having a radically crosslinkable ethylenically unsaturated double bond or a radically crosslinkable ethylenically unsaturated double bond. A UV curable coating obtained by adding a resin or resin acid to a composition comprising a monomer having the above and a photosensitizer in an amount of 0.5 to 10.0% by weight is coated on the printing surface of the oil-based ink and dried. It is a method of applying a printing surface coating, there is a problem that the running cost and equipment cost of the curing means is increased due to the use of an ultraviolet curable material, and, this method can be applied,
Limited to printing surface with oil-based ink.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and includes other printing methods including handwriting, such as an ink jet method, an electrophotographic method, and a fusion type thermal transfer method. , A resin layer is formed on the printing surface by any printing method such as offset printing, flexographic printing, gravure printing, stencil printing, etc. with a simple configuration to protect the printing surface and waterproof. The problem to be solved is to provide a resin layer forming apparatus on a printing surface capable of achieving processing, glossing, and the like at low cost and at a high speed, and an image forming apparatus capable of printing and forming a resin layer on the printing surface. I do.

[0009]

According to a first aspect of the present invention, there is provided an application unit for applying a resin solution obtained by dissolving a resin in a solvent to a printing surface of a recording medium, and curing the resin solution applied by the application unit. A resin layer forming apparatus that forms a resin layer on the printing surface, wherein the resin liquid curing unit uses a solid material that is swellable in the solvent as a contact material for the resin liquid. It is characterized by the following.

According to a second aspect of the present invention, in the resin layer forming apparatus according to the first aspect, a silicone resin is used as the swellable solid material.

According to a third aspect of the present invention, in the resin layer forming apparatus according to the first or second aspect, the surface shape of the solid material is a mirror surface.

According to a fourth aspect of the present invention, there is provided an application means for applying a resin solution obtained by dissolving a resin in a solvent to a printing surface of a recording medium;
A resin liquid curing device that cures the resin liquid applied by the coating device, wherein the resin liquid curing device has compatibility with the solvent in a resin layer forming apparatus that forms a resin layer on the printing surface. A liquid material having a sufficiently large molecular weight compared to the solvent is used as a contact material for the resin liquid.

According to a fifth aspect of the present invention, in the resin layer forming apparatus according to the fourth aspect, a silicone resin having fluidity is used as the liquid material.

According to a sixth aspect of the present invention, there is provided the resin layer forming apparatus according to any one of the first to fifth aspects, further comprising means for forming a mat or an embossed shape, wherein the surface shape of the resin layer is made a mat shape or an embossed shape. It is characterized by the following.

According to a seventh aspect of the present invention, in the resin layer forming apparatus according to any one of the first to sixth aspects, the coating means can form the resin layer only in a predetermined area of the printing surface. It is characterized by the following.

According to an eighth aspect of the present invention, in the resin layer forming apparatus according to any one of the first to seventh aspects, the application means performs the application of the resin liquid by using a spray or a jet nozzle. It is a feature.

According to a ninth aspect of the present invention, in the resin layer forming apparatus according to any one of the first to eighth aspects, the application unit includes a resin liquid curing unit configured to reduce a contact pressure between the contact material and the printing surface. It is characterized by being changed according to the surface condition of the printing surface.

According to a tenth aspect of the present invention, there is provided a printing unit, and the resin layer forming apparatus according to any one of the first to ninth aspects,
The present invention is characterized in that a resin layer can be formed by the resin layer forming device on a printing surface of a recording medium created by the printing means.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments to which the present invention is applied will be specifically described below with reference to the accompanying drawings. In addition,
In all the drawings for describing the embodiments, components having the same function are denoted by the same reference numerals, and repeated description thereof will be omitted. (Invention of Claim 1) FIG. 1 is a configuration diagram showing an outline of an apparatus configuration to which a resin layer forming apparatus according to the present invention is applied.
1 is a resin layer forming unit (resin layer forming means), 2 is a recording medium (recording paper), 2 'is a recording paper having a resin layer formed thereon, 5 is a paper feed roller, 10 is a resin liquid applying means, and 20 is a resin liquid hardening. It is assumed that the recording paper 2 is conveyed in the direction of the arrow X.

FIG. 2 is a schematic view of the essential parts for explaining the first aspect of the present invention. In FIG. 2, reference numeral 3 denotes an ink, 4 denotes a resin liquid, and 4 'denotes a resin layer (a cured resin layer or a resin layer whose curing is accelerated). Resin layer), 11
Denotes a pressure roller, 12 denotes a porous body impregnated with a resin liquid, and 13, 1
4,14 'are rubber rollers, 15 blade, 21 pressure roller, with C _S is the solid contact material, FIG. 2 (A), to use a porous body 12 of the resin solution 4 was impregnated as a resin solution coating method FIG. 2B is a diagram in which the resin liquid 4 is supplied in a thin layer by a multi-stage roller, and FIG.
A thin resin layer is formed by the blade 15 of the roller 14,
This is shown to be transferred to the second roller 4.

FIG. 3 is a schematic diagram showing an example of a means for shortening the resin liquid curing time in the resin layer forming apparatus according to the present invention. In FIG. 3, reference numeral 6 denotes a Peltier element, 7 denotes a thermal conductor, and C _L denotes a liquid. Contact material. FIG. 4 is a diagram showing the relationship between the volume fraction of the resin in the resin liquid according to the present invention and the temperature. FIG.
FIG. 6 is a main part configuration diagram showing another example of the means for shortening the resin liquid curing time in the resin layer forming apparatus of the present invention, in which 8 is a heater. FIG. 6 is a main part configuration diagram showing still another example of the means for shortening the resin liquid curing time in the resin layer forming apparatus of the present invention, in which 9 is a heating source.

According to the present invention, a thin layer of a resin liquid is applied to a printing surface of a recording medium such as paper (hereinafter, referred to as a recording paper), and then a solid contact material is brought into contact with the resin liquid to cure the resin liquid. An apparatus for forming a resin layer on a printing surface on which a resin layer is to be formed is proposed. As shown in FIG. 1, the general flow of this process is as follows.
Is transported to the resin liquid applying means 10, where the printing surface is coated with the resin liquid. Next, the recording paper 2 is applied to the resin liquid curing means 2
Transported to 0, to cure the resin solution coated by contacting the solid contact material C _S included in the resin component curing means 20 on the printing surface. Finally, the recording paper 2 'having the printed surface coated with the resin layer is carried out.

The resin liquid used here includes existing overprint varnishes such as an oxidative polymerization dry type overprint varnish, a solvent type overprint varnish, an ultraviolet curable overprint varnish, a resin contained in a printing ink, and a solvent. Or an oil. Examples of the resin include natural resins such as rosin, shellac, and gilsolite; natural resin derivatives such as rosin ester, maleic acid resin and fumaric acid resin; and synthetic resins and other rosin-modified phenol resins. Phenol resin, alkyd resin (fatty acid modified polyester resin), petroleum resin such as aromatic or aliphatic hydrocarbon resin, acrylic resin, polyester resin, polyamide resin, cyclized rubber, chlorinated rubber, urea resin, melamine resin, ketone resin , Polyvinyl chloride, vinyl chloride and vinyl acetate If resin, epoxy resin, polyurethane, nitrocellulose, and the like.

Examples of the resin solvent include fatty acid hydrocarbons such as petroleum solvents, alcohols, esters, ketones, glycols, vegetable oils such as linseed oil, cinnamon oil, soybean oil, castor oil, polymerized oil, dehydrated castor oil, and maleic acid. Processing oils and mineral oils such as petroleum oils, urethane oils, and vinylated oils. Various additives such as a plasticizer, a wax, a dryer, a dispersant, a thickener, a gelling agent, an antistatic agent, and a lubricant may be added to the resin liquid.

The ratio of resin weight to resin liquid weight is 5
% To 90% is good, and the viscosity of the resin liquid can be used from a low viscosity of about ⁵ cp to an ultra-high viscosity of about 10 ⁶ cp. desirable. The thickness of the resin layer is 0.5 μm to 100 μm.
A thickness of about μm is preferable, and a thin layer is desirable when emphasizing the curing time of the resin liquid. When a low-viscosity resin liquid is used, the thickness of the resin layer is formed as thin as about 0.1 to 2 μm.
It is desirable to wait several minutes, and the resin layer formation time is slightly longer. When a high-viscosity resin liquid is used, the resin layer can be formed in a wide thickness of about 1 to 100 μm, and the curing time of the resin liquid can be shortened.

The dissolution state of the resin solvent and the resin is such that the resin is swollen by the resin solvent or the resin is dispersed in the resin solvent rather than the resin being completely dissolved in the resin solvent. Compatibilizing in a state close to the state can shorten the time required for curing the resin liquid. The compatibility between the resin and the resin solvent depends on the combination of the resin and the resin solvent, and on the volume fraction of each. The printing method, the recording paper to be used, the required curing time, and other various conditions are taken into consideration. It is preferable to determine appropriate resin liquid composition conditions. As the resin solvent, a liquid that dissolves the resin in the resin liquid and is used as a component of the resin liquid is used. Generally, an oil or a petroleum-based solvent is used. Is different.

As a method of applying the resin liquid to the printing surface, for example, as shown in FIG. 2A, a sponge impregnated with the resin liquid 4 or a porous material 12 such as rubber, cloth, paper or the like is used to directly contact the printing surface. 2B, the resin liquid 4 may be supplied in a thin layer by a multi-stage roller composed of rubber rollers 13, 14, 14 'as shown in FIG. As shown in FIG. 2C, a thin layer of the resin liquid 4 may be formed on the surface of the first rubber roller 14 by the blade 15 and the resin liquid 4 may be transferred to the surface of the second rubber roller 13 and supplied to the printing surface. If the printed matter does not move or is large like a wallpaper or poster, use a brush or hand roller,
A squeegee or the like may be used. Usually, the color of the resin liquid 4 is preferably colorless and transparent, but fine coloring may be performed by adding a coloring agent such as a pigment or a dye as required for the surface color.

Examples of the solid contact material C _S, natural rubber, candy rubber, olefin elastomer, butyl rubber, desirably chloroprene rubber, as the contact method to print plane, for example, the forming roller shape or an arc shape, a plate shape And contact. The present inventors have found that when these solid contact materials are brought into contact with a resin liquid, the separation of the resin and the resin solvent in the resin liquid is remarkably promoted, and the resin is formed into a film, thereby curing the resin liquid. It has been found that it takes about several tens of milliseconds to 5 minutes.

Further, when the solid contact material is separated from the resin liquid layer after the resin liquid layer has hardened, it is confirmed that the resin liquid does not adhere to the solid contact material and the transparency of the resin liquid layer is not impaired. I found it. In addition, when a solid contact material that does not show swelling property but shows permeability to the resin solvent is brought into contact with the resin liquid,
Even if the resin liquid does not harden or slightly hardens even after prolonged contact for about a minute, and after the resin liquid hardens to some extent,
When the solid contact material is separated from the resin liquid, the resin liquid also adheres to the solid contact material, impairing the smoothness of the resin formed on the printing surface, and significantly reducing functions such as image quality and printing surface protection. I also found out. It has also been found that, in the case of a solid contact material that does not exhibit swelling or permeability to a resin solvent, the resin liquid does not cure even after a long contact time of about 10 minutes. The present invention utilizes this phenomenon.

As a means for shortening the resin liquid curing time, the following method may be used. In the first method, a plurality of resin liquid curing units are provided and brought into contact with each other, or the same resin liquid curing unit is contacted a plurality of times. The number of resin liquid curing means is determined by the physical properties of the recording paper or resin liquid to be used, the thickness of the resin liquid on the printing surface, the surrounding environment, the required resin liquid curing time, and the like. The greater the number of resin liquid curing means, the shorter the resin liquid curing time, but the larger the apparatus. Therefore, it is preferable to determine the number of resin liquid curing means from the required resin liquid curing time and the required device shape.

In the second method, before or during the contact of the solid contact material with the resin liquid layer, the resin liquid applied to the printing surface or the vicinity of the contact portion between the resin liquid and the solid contact material is removed. It cools down. If the temperature is lowered in a state where the resin and the resin solvent of the resin liquid are dissolved, separation of the resin and the resin solvent may be promoted. Since the temperature at which this phenomenon is observed varies depending on the combination of the resin and the resin solvent, the energy required for cooling is relatively small, and the resin and the resin solvent do not separate during storage or application of the resin liquid. It is desirable to use a resin solution composed of a combination. Therefore, when using such a resin liquid and cooling the resin liquid on the printing surface or the vicinity of the contact portion between the resin liquid and the solid contact material in the resin liquid curing step, the solid contact material is simply brought into contact with the resin liquid. It becomes possible to shorten the resin liquid curing time as compared with the case of (1). As for the cooling method, a cool air may be sent, or as shown in FIG. 3, a silicone resin to which ink does not adhere is arranged on the surface, and the surface or the inside is brought into contact with the Peltier element 6 or a roller cooled with a cooling liquid or cool air. Alternatively, an existing cooling method can be used.

Further, by setting the cooling temperature below the upper critical solution temperature determined by the resin and the resin solvent, the curing time of the resin can be further shortened. As shown in FIG. 4, depending on the combination of the resin and the resin solvent in the resin liquid, there is a temperature at which the resin and the resin solvent separate when the temperature decreases, and this temperature is referred to as the upper critical solution temperature. Therefore, when a resin liquid having an appropriate upper critical solution temperature is used, it is possible to significantly shorten the resin liquid curing time by cooling in the resin liquid curing step as compared with simply contacting the solid contact material with the resin liquid. Becomes

In the third method, before or during the contact of the solid contact material with the resin liquid layer, the resin liquid applied to the printing surface or the vicinity of the contact portion between the resin liquid and the solid contact material is removed. It is to be heated. When the temperature is increased in a state where the resin and the resin solvent of the resin liquid are dissolved, separation of the resin and the resin solvent may be promoted. Since the temperature at which this phenomenon is observed depends on the combination of the resin and the resin solvent, the energy required for heating is relatively small, and
It is desirable to use a resin liquid composed of a combination of a resin and a resin solvent that does not separate during storage of the resin liquid or application of the resin liquid. Therefore, when using such a resin liquid and heating the resin liquid on the printing surface or the vicinity of the contact portion between the resin liquid and the solid contact material in the resin liquid curing step, the solid contact material is simply brought into contact with the resin liquid. It becomes possible to shorten the resin liquid curing time as compared with the case of (1).

As for the heating method, as shown in FIG. 5, a silicone resin to which the resin solution does not adhere may be disposed on the surface, and the surface or the inside may be brought into contact with a roller heated by a heater or a lamp which emits a heat ray. In the drawing, a heater 8 is disposed inside), and as shown in FIG. 6, a heating source 9 for emitting warm air or heat rays may be disposed in a non-contact manner on a printing surface to heat the printing surface. A method is available. Further, by setting the heating temperature to be equal to or higher than the lower critical solution temperature determined by the resin and the resin solvent, the curing time of the resin can be further shortened. Due to the combination of the resin and the resin solvent of the resin liquid, there is a temperature at which the resin and the resin solvent separate when the temperature rises, as shown in FIG.
This temperature is called the lower critical solution temperature. Therefore, when a resin liquid having an appropriate lower critical solution temperature is used, it is possible to significantly shorten the resin liquid curing time by heating in the resin liquid curing step as compared with simply contacting the solid contact material with the resin liquid. Becomes The printed material forming the resin layer includes, in addition to pulp paper, coated paper, synthetic paper, films such as OHP, resin, metal, and all other materials to be printed.

(Invention of claim 2) In the present invention, the solid contact material in claim 1 is a silicone resin. According to the present invention, a thin resin layer is applied to a printing surface of a recording medium such as paper (hereinafter, referred to as recording paper), and then a thin resin layer is formed on the printing surface by contacting a silicone resin to cure the resin liquid. The present invention provides an apparatus for forming a resin layer on a printing surface to be formed. The present inventors have conducted various studies on solid contact materials exhibiting swelling properties with respect to resin solvents, and as a result, have found that among these, silicone resins are particularly excellent.

First, silicone resin is one of the fastest solid curing materials among solid contact materials, and other solid contact materials slightly adhere to the surface of the solid contact material when they are separated from the resin solution before the resin solution is cured to some extent. On the other hand, the silicone resin does not adhere to the surface of the silicone resin even when the silicone resin is released in a soft state. That is, it can be said that silicone resin has the highest reliability as a method of forming the resin layer without damaging it. The reason why the resin liquid does not adhere to the surface of the silicone resin even when the silicone resin is released in a soft state is that the surface energy of the silicone resin is low, and as shown in the WBFL theory, an extremely thin silicone oil is applied to the surface of the silicone resin. It seems that the formation of the layer contributes. However, there are other materials having only a low surface energy, such as fluororesin, but fluororesin has poor swellability in a resin solvent, and the resin liquid hardly hardens. That is, the silicone resin has a unique property that the resin liquid hardly adheres and swells with respect to the resin solvent. By combining with the silicone resin, the reliability of the resin layer formation and the resin layer The quality is dramatically improved.

The silicone resin used may be a crosslinked or vulcanized product such as a chain polymer or a branched polymer having a siloxane structure as a unit, or a heat-vulcanized silicone rubber. Further, any of modified silicone resins such as dimethyl-based, methylvinyl-based, and methylphenylvinyl-based may be used. The resin is
Any of an elastic body such as a rigid body or rubber and a semi-solid such as a gel may be used. Elastic bodies containing silicone resins are also excellent. The same method as in claim 1 is used as the method of contacting the resin liquid.

(Invention of Claim 3) The invention of the invention of claim 3 will be described with reference to FIG. FIG. 7 is an enlarged view of the surface of the contact material for explaining the invention of claim 3, wherein FIG. 7A shows a normal surface shape and FIG. 7B shows a mirror surface shape. . According to the present invention, in the solid contact material according to claims 1 and 2, a member having a mirror-finished surface is used. However, as shown in FIG. 7, the term “mirror surface” as used herein refers to a surface having a 10-point average roughness of 2 μm or less. By using a material that satisfies this condition, it is possible to prevent the transfer of the resin liquid to the contact member during the curing of the resin liquid, so that the smoothness of the surface of the formed resin layer is improved.

(Invention of Claim 4) FIG.
This will be described with reference to FIGS. FIG. 8 is a configuration diagram of a main part for describing the invention of claim 4;
2, 25 are porous bodies impregnated with a liquid contact material, 23, 24, 2
4 'is a rubber roller, 26 is a liquid contact material injection means, 27
FIG. 8 (A) shows a method of applying a flowable silicone to be brought into contact with a liquid absorbing means to cure the resin liquid.
(B), (C), and (D) respectively. The present invention provides an apparatus for forming a thin resin layer on a printing surface, which forms a thin resin layer on a printing surface by applying a thin layer of a resin solution to a printing surface of a recording paper, and then contacting a liquid contact material to cure the resin liquid. It is a suggestion. The present inventors have found that when the liquid contact material is brought into contact with the resin liquid, the separation of the resin and the resin solvent in the resin liquid is remarkably promoted, and the resin is formed into a film, so that the fixing of the resin liquid takes several tens of minutes. It was found that it was formed in milliseconds to about 5 minutes. Further, when the liquid contact material is brought into contact with a colored or colorless and transparent resin liquid, the resin and the resin solvent in the resin liquid are immediately separated to form a transparent resin film. This phenomenon occurs when the resin is completely dissolved or almost completely dissolved in the resin solvent, or when the resin is swollen by the resin solvent, Even when the resin is dissolved in a state close to the state where the resin is dispersed therein, the same can be seen, and this is a novel method completely different in principle from the conventional resin layer forming method.

As the liquid contact material, any liquid having excellent compatibility with the resin solvent and having a sufficiently large molecular weight than the resin solvent may be used. For example, oils such as mineral oil and engine oil, grease and the like can be used. No. Here, “sufficiently large” means a state where the molecular weight of the liquid contact material is about 10 times or more as compared with the molecular weight of the resin solvent. As the supply method, for example, Ya structure into contact with the liquid contact material C _L was impregnated sponge or rubber, cloth, directly recording sheet 2 surface using a porous material 22 such as paper as shown in FIG. 8 (A) And the rubber rollers 23, 24, 2 as shown in FIG.
Liquid contact material C by multi-stage roller composed of 4 '
The structure and the thin layer for supplying _L, The porous body 25 a rubber roller 2 impregnated with liquid contact material C _L as shown in FIG. 8 (C)
Contacting the 3 etc. formed supplies constituting the thin layer of the liquid contact material C _L on the surface of the rubber roller 23 and the like are. Alternatively, as shown in FIG. 8D, a configuration in which the liquid is applied in a non-contact manner by a liquid contact agent ejecting means 26 such as a spray or a nozzle jet may be used. Compatibility of the liquid contact material C _L for the resin, no or, alternatively, but worse is desired, than the time that the resin and the liquid contact material C _L is dissolved, sufficiently better time the resin and the resin solvent are separated if early to the liquid contact material C _L may be slightly has compatibility with the resin.

The thickness of the liquid contact material applied to the printing surface is
500 μm or less is preferable, and considering the removal of the liquid contact material, more preferably 100 μm or less,
In order to eliminate the mechanism for removing the liquid contact material after the formation of the resin layer, the thickness is desirably 10 μm or less. In the case of recording paper that absorbs a liquid contact material, such as paper, a low-viscosity liquid contact material having a thickness of about 10 μm is absorbed, so that it is not necessary to remove the liquid contact material after forming the resin layer. However, in order to shorten the ink fixing time, it is better that the thickness of the ink curing liquid is thicker. Therefore, the actual thickness of the ink curing liquid depends on the physical properties of the recording paper and ink used, the thickness of the ink on the recording paper, and the printing. It is preferable to determine the number in consideration of the number of inks used, the surrounding environment, the required ink fixing time, and the like.

As a means for shortening the resin liquid curing time, the following method may be used. In the first method, a plurality of resin liquid curing units are provided and brought into contact with each other, or the same resin liquid curing unit is contacted a plurality of times. The number of resin liquid curing means is determined by the physical properties of the recording paper or resin liquid used, the thickness of the resin liquid on the printing surface, the surrounding environment, and the required resin liquid curing time. The greater the number of resin liquid curing means, the shorter the resin liquid curing time, but the larger the apparatus, so the number of resin liquid curing means should be determined from the required resin liquid curing time and the required device shape.

In the second method, before or after the contact of the solid contact material with the resin liquid layer, the vicinity of the contact portion between the resin liquid applied to the printing surface or the resin liquid and the liquid contact material is cooled. Things. When the temperature is lowered in a state where the resin and the resin solvent of the resin solution are dissolved, separation of the resin and the resin solvent may be promoted. Since the temperature at which this phenomenon is observed depends on the combination of the resin and the resin solvent, the energy required for cooling is relatively small, and the resin and the resin solvent do not separate during storage of the resin liquid or during application of the resin liquid. It is desirable to use a resin liquid composed of a combination of the above. Therefore, by using such a resin liquid and cooling the resin liquid on the printing surface or the vicinity of the contact portion between the resin liquid and the liquid contact material in the resin liquid curing step, it is only necessary to bring the liquid contact material into contact with the resin liquid. It becomes possible to shorten the resin liquid curing time as compared with the case. As a cooling method, a cool air may be sent, or as shown in FIG. 3, a silicone resin to which ink does not adhere is disposed on the surface, and the surface or the inside is formed of a Peltier element 6,
Alternatively, a roller cooled by a cooling liquid or cold air may be brought into contact, and an existing cooling method can be used.

Furthermore, by setting the cooling temperature to be equal to or lower than the upper critical solution temperature determined by the resin and the resin solvent, the curing time of the resin liquid can be further shortened. As shown in FIG. 4, depending on the combination of the resin and the resin solvent in the resin liquid, there is a temperature at which the resin and the resin solvent separate when the temperature decreases, and this temperature is referred to as the upper critical solution temperature. Therefore, when a resin liquid having an appropriate upper critical solution temperature is used, by cooling in the resin liquid curing step, it is possible to shorten the resin liquid curing time as compared with simply contacting the liquid contact material with the resin liquid. Become.

In the third method, before, during or after the contact of the liquid contact material with the resin liquid layer, the resin liquid applied to the printing surface, or the resin liquid and the liquid contact material, It heats the vicinity of the contact portion. When the temperature is increased while the resin and the resin solvent of the resin liquid are dissolved,
Separation of the resin and the resin solvent may be promoted. Since the temperature at which this phenomenon is observed differs depending on the combination of the resin and the resin solvent, the energy required for heating is relatively small, and the resin and the resin solvent do not separate during storage of the resin liquid or during application of the resin liquid. It is desirable to use a resin liquid composed of a combination of the above. Therefore, by using such a resin liquid and heating the resin liquid on the printing surface or the vicinity of the contact portion between the resin liquid and the liquid contact material in the resin liquid curing step, it is only necessary to bring the liquid contact material into contact with the resin liquid. Than if
The resin liquid curing time can be shortened.

As for the heating method, as shown in FIG. 5, a silicone resin to which the resin solution does not adhere may be arranged on the surface, and the surface or the inside may be brought into contact with a roller heated by a heater or a lamp which emits a heat ray. In the drawing, a heater 8 is arranged inside), and as shown in FIG. 6, a heating source 9 for emitting warm air or heat rays may be arranged in a non-contact manner on a printing surface to heat the printing surface. A heating method can be used. Furthermore, by setting the heating temperature to be equal to or higher than the lower critical solution temperature determined by the resin and the resin solvent, the curing time of the resin liquid can be further shortened. As shown in FIG. 4, depending on the combination of the resin and the resin solvent in the resin liquid, there is a temperature at which the resin and the resin solvent separate when the temperature rises, and this temperature is referred to as the lower critical solution temperature. Therefore, when a resin liquid having an appropriate lower critical solution temperature is used, it is possible to shorten the resin liquid curing time by heating in the resin liquid curing step as compared with simply contacting the liquid contact material with the resin liquid. Become. The process, the composition and material of the resin liquid, the method of supplying the resin liquid to the printing surface, the recording paper, etc.
Therefore, the description is omitted.

(Invention of claim 5) FIG.
This will be described with reference to FIG. FIG. 9 is a configuration diagram of a main part for describing the invention of claim 5. In the present invention, a liquid silicone material having fluidity (hereinafter, referred to as a fluid silicone resin) is brought into contact with or applied as the liquid contact material of claim 4 to cure the resin liquid. The fluid silicone is odorless and less harmful to the human body as compared with the liquid contact material described in claim 4, so that it is very excellent in terms of environmental hygiene. There is almost no adverse effect on the surface of the resin layer, and the slipperiness of the surface of the formed resin layer is improved.

The fluid silicone includes silicone oil and silicone gum. Silicone oils include dimethyl silicone oil, methyl phenyl silicone oil, methyl hydrogen silicone oil, etc., as well as modified silicone oils in which various organic groups are introduced into some of the methyl groups of dimethyl silicone.
Includes many other modified species including amino-modified, alkyl-modified, alcohol-modified, epoxy-modified, epoxy-polyether-modified, carboxyl-modified, polyether-modified, and the like. Silicone gum is an ultrahigh-viscosity silicone oil, including those having a combination of viscosity like a liquid and elasticity like a solid.

With respect to the constitution example and the supply method, the same method as that of the invention of claim 4 is used except for the silicone gum. The silicone gum, since it is difficult penetration into the porous body is made, as in FIG. 9, the liquid contact material C _L with a silicone gum planarly in contact with the surface of the recording paper 2, may be peeled off, but not shown Alternatively, the silicone gum may be deformed into a spherical shape or a stick shape and rolled on the recording paper 2, or the silicone gum may be attached around the roller and brought into contact with the resin liquid 4. The size and thickness of the silicone gum to contact
Although not particularly specified, the diameter or thickness is 100 μ
m or more tends to shorten the resin liquid curing time.

(Invention of claim 6) FIG.
0 will be described. FIG. 10 is an enlarged view of a main part of a recording paper or a contact material for explaining the invention of claim 6, in which 30 is mat-forming fine particles, 31 is embossed (or matted), 32 is matted or embossed. The roller 33 whose surface has been processed is a contact material-impregnated porous body. Figure 10 (A) is intended to show an example of adding fine particles 30 into a layer of the resin solution 4, FIG. 10 (B) show examples of applying a matted or embossing 31 on the surface of the solid contact material C _S FIG 10 (C) is intended to show an example of forming a layer of solid contact material C _S hard roller 32 which has been subjected to mat processing or emboss processing, FIG. 10 (D) rigid subjected to mat processing or emboss An example is shown in which the liquid contact material _CL is supplied to the roller 32 and the resin liquid curing and the matting or embossing of the resin layer surface are simultaneously performed. The present invention is a resin layer forming apparatus for forming a resin layer having a mat (matte) or embossed surface on a printing surface according to claims 1 to 5. Examples include a method of adding fine particles 30 into a layer of liquid resin 4 as in FIG. 10 (A), the or subjected to mat processing or emboss 31 on the surface of the solid contact material C _S as of FIG. 10 (B), Alternatively, either to form a layer of solid contact material C _S hard roller 32 which has been subjected to mat processing or emboss processing as in FIG. 10 (C), the or FIG. 10
As shown in (D), there is a method in which the liquid contact material _CL is supplied to the hard roller 32 that has been subjected to the matting or embossing as in (D) to simultaneously perform the curing of the resin liquid and the matting or embossing of the resin layer surface. The matting or embossing of the surface of the hard roller can be easily performed by a general method such as integral molding or embossing.

(Invention of Claim 7) FIG.
This will be described with reference to FIG. FIG. 11 is an enlarged view of the resin liquid application means for explaining the invention of claim 7, in which 16 is a plate and 17 is an offset roller. In the apparatus according to the first to sixth aspects of the present invention, since the resin layer is formed on the entire printing surface, it is not possible to partially enhance the gloss by emphasizing or waterproof or protect a minute area. This invention is claimed in claims 1 to
In a sixth aspect of the present invention, a resin layer forming apparatus for forming a resin layer only at a desired position on a printing surface is proposed. As an example, as shown in FIG. 11, a plate, an intaglio, a letterpress, a stencil, or the like is made on a printing surface so as to coincide with a region where a resin layer is to be formed, thereby forming a region where the resin liquid adheres to the plate. There is a method in which a resin liquid is supplied to a desired area of a printing surface directly from a plate or by an offset method, and a resin layer is formed on the printing surface by a coating method using the apparatus according to any one of claims 1 to 6. In addition, as the plate used here, the receding contact angle is reduced when a stencil that can be easily made with a thermal head or a contact member such as a liquid or a solid that generates a liquid in a heated state, and It is preferable to use a plate or the like having a surface characteristic in which a receding contact angle increases when heated in a non-contact state with a liquid or a solid that generates a liquid.

(Invention of claim 8) The invention of claim 8 is shown in FIG.
This will be described with reference to FIG. FIG. 12 is an enlarged view of the resin liquid applying means for explaining the invention of claim 8, wherein FIG.
Reference numeral 19 denotes a resin liquid spraying means, in particular, 18 denotes a spray, and 19 denotes a jet nozzle. According to the method of claims 1 to 7, particularly when the ink is in an undried state and has a low viscosity, the ink is easily transferred to the resin liquid application unit side when the resin liquid is applied to the printing surface, and the printing surface is contaminated. There's a problem. The present invention proposes a resin layer forming apparatus for applying a resin liquid to a printing surface in a non-contact manner using a spray or jet nozzle in the inventions of the first to seventh aspects. The resin liquid supply method by spraying 18, the viscosity of the resin solution to be used is preferably about 0.5 to 10 ³ cp, the resin liquid supply method according to the jet nozzle 19, the viscosity of the resin solution to be used is 0.5 to 10 ² Desirably about cp. In addition, by controlling the protrusion of the resin liquid according to the information on the printing surface, it is possible to form the resin layer only on a desired region without contacting the printing surface.

(Invention of claim 9) FIG.
3 will be described. FIG. 13 is an enlarged view of a main part of the resin layer curing means for explaining the invention of claim 9, wherein FIG.
Reference numeral 4 denotes a contact material, which indicates the contact material according to any one of claims 1 to 8, wherein FIG. 13 (A) shows a case where the ink has penetrated the print surface, and FIG. This is shown in FIG. 13B. The present invention relates to claims 1 to
In the invention of the eighth aspect, the contact pressure between the resin liquid curing means and the printing surface is controlled so as to be not less than a certain value regardless of the thickness and the material hardness of the printing material having the printing surface, and the surface of the printing material (recording paper 2) is controlled. The present invention proposes a resin layer forming apparatus capable of always applying a good resin liquid by changing the contact pressure in accordance with the roughness, the degree of ink permeation to the printing surface, and the degree of ink drying on the printing surface. .

To keep the contact pressure between the contact material 34 of the resin liquid curing means and the printing surface constant irrespective of the thickness of the recording paper 2, the thicker the recording paper 2 or the higher the hardness, the more the resin liquid is cured. The optimum distance between the means and the recording paper 2 is increased, and conversely, the thinner the recording paper 2 and the lower the hardness, the shorter the distance. As a method, the thickness and the hardness may be respectively detected, the user may input to the apparatus, or a pressure sensor may be provided on the pedestal of the recording paper 2 to detect all conditions simultaneously. good.

Factors that change the contact pressure of the resin liquid curing means with the contact material 34 are the roughness of the printing surface and the state of the ink on the printing surface. When the ink on the printing surface is dry, or when the ink viscosity is low and penetrates into the printing surface as in ink jet recording or gravure printing as shown in FIG. In some cases, the contact pressure is reduced because the contact between the contact material 34 and the printing surface is good, and conversely, when the printing surface is rough, the contact pressure is increased because the contact between the contact material 34 and the printing surface is poor. To

Further, as in the case of lithographic printing or screen printing, a high-viscosity ink is not undried, and the ink shown in FIG.
In the case where the ink does not penetrate into the printing surface and adheres to the surface as described above, increasing the contact pressure between the contact material 34 and the printing surface can easily spread the ink and reduce the image quality. It is more desirable to lower the pressure than that.
When the surface of the printing surface is rough, it is desirable to use a liquid contact material which has excellent contact with the printing surface and can cure the resin liquid at low pressure.

(Invention of Claim 10) The invention of claim 10 will be described with reference to FIGS. FIG. 14 is an apparatus configuration diagram for explaining the invention of claim 10, wherein
40 is a printing unit, 41 is a powder colorant supply unit, 42 is a photoconductor, and 43 is a light source. FIG. 15 is a block diagram of the apparatus for explaining the tenth aspect of the present invention. In FIG. 15, reference numeral 44 denotes an ink jet recording unit. FIG. 16 is a diagram showing the construction of an apparatus for explaining the tenth aspect of the present invention. In FIG. 16, reference numeral 45 denotes a plate, reference numeral 46 denotes a stencil, and FIG.
FIG. 16A shows the stencil method in FIG. 16A. FIG. 17 is an apparatus configuration diagram for explaining the tenth aspect of the present invention. In the figure, reference numeral 47 denotes a sublimation type thermal transfer recording means. FIG. 18 is an apparatus configuration diagram and a chart diagram for explaining the tenth aspect of the present invention. In FIG.
Reference numeral 50 denotes a printed machine recording paper set position; 51, a paper detection sensor; and 52, a signal.
FIG. 18A shows an example of the operation flow at this time.
(C) and (D) respectively. The present invention
It is an object of the present invention to provide an image forming apparatus having a means for forming a resin layer on a printing surface and a printing means. The operation procedure is as follows: printing on the recording paper → application of the resin liquid to the printing surface → hardening of the resin liquid. As the image forming unit, a known printing method such as a printing method using an aqueous or oil-based ink, a recording method using a thermal sublimation type or a heat melting type ink, and a dry or wet electrophotographic recording method is used. As an example, FIG.
2 illustrates a printing method using a powder coloring material.

FIG. 15 is an explanatory diagram for a recording method using an aqueous ink. Examples of the printing means include an ink jet recording method, gravure printing, flexographic printing, screen printing (including digital stencil printing), and a plotter. In the case of recording paper with good liquid absorbency, there is no liquid layer on the printing surface, and coloring agents such as pigments and dyes and resin components adhere to the recording paper, and the resin liquid adheres to the printing surface. The method is the same as that of claims 1 and 6, but especially when the liquid permeability of the recording paper surface is low, such as an OHP film, wait for a while until the water contained in the ink evaporates. It is desirable to apply a resin liquid. In addition, when the printing surface is wet with the ink, if the resin liquid has an ultra-high viscosity, the resin liquid does not easily transfer from the resin liquid supply means to the printing surface, and if the viscosity is low, the resin liquid is partially removed on the printing surface. Since it may be repelled, its viscosity is desirably about 10 ³ to 10 ⁵ cp. In addition, in order to prevent unevenness of the resin liquid on the printing surface, it is desirable to immediately cure the resin after applying the resin liquid. As the resin liquid curing means, claims 1 to 1
The device according to any one of the inventions 7 and 9 is used.

FIG. 16 is an explanatory diagram for a recording method using oil-based ink. The printing means is, for example, as shown in FIG.
Offset printing shown in FIG. 16A, screen printing (including digital stencil printing) shown in FIG. Regarding the method of applying the resin liquid, the method according to claim 1, wherein the ink on the printing surface is set.
Although the method of (6) or (6) is good, when the ink on the printing surface is not set, especially when the resin liquid has an extremely high viscosity, the ink easily adheres to the resin liquid supply side, and when the viscosity is low, the printing is performed. Because the ink on the surface easily dissolves in the solvent or oil,
The viscosity is desirably about 10 ³ to 10 ⁵ cp.
Further, in order to prevent bleeding due to the melting of the ink on the printing surface, it is desirable to cure the resin immediately after applying the resin liquid. As the resin curing means, the one according to the apparatus of any one of claims 1 to 7 and 9 is used.

FIG. 17 is a diagram illustrating a recording method using a sublimation type thermal transfer ink. Examples of the printing means include sublimation thermal transfer printing using a thermal head or a laser beam, and sublimation transfer printing in which a printed matter on transfer paper obtained by gravure printing or lithographic printing is overlapped with a fabric and heated. For the resin liquid application method, a sublimation type thermal transfer ink surface of the recording paper in printing with the poor absorbent, in order to prevent that the liquid resin curing time becomes longer, the viscosity of the resin liquid is higher well, 10 ⁴ it is desirable that the order to 10 ⁶ cp. As the resin liquid curing means, the apparatus according to any one of claims 1 to 7 and 9 is used. In the printing using the sublimation type thermal transfer ink, the surface of the recording paper has a mirror surface such as photographic paper. Therefore, fingerprints and scratches are easily formed. Therefore, it is particularly desirable to form the resin layer by the apparatus according to the sixth aspect. In any configuration, it is desirable to immediately form a resin layer on the printing surface after printing in order to prevent dust adhesion and contamination on the printing surface.

Further, as a function of the present apparatus, as shown in FIG. 18, a function of forming a resin layer on the surface of an existing printed matter may be provided. The existing printed matter or recorded matter refers to a printed matter or a handwritten recorded matter outputted by another existing printing device. Therefore, only the formation of the resin layer is performed without using the printing means mounted on the apparatus. As a method of determining whether to set the printing + resin layer formation mode or the resin layer formation only mode, for example, FIG.
As shown in FIG. 8 (B), a method of setting by inputting from a panel installed on a switch or a device by a user,
In addition, as shown in FIG. 18C, the setting position of the recording paper for printing and forming the resin layer and the setting position of the recording paper only for forming the resin layer are changed, and the setting state of the recording paper is detected by an optical sensor or the like. When the recording paper for forming the resin layer is set, a method of preferentially performing the mode for forming the resin layer only is used.
When printing is performed as shown in FIG. 8D, image data is input to the apparatus through a bus or a scanner.
When only the resin layer is formed, only the recording paper is set. Therefore, the printing operation when the execution command is issued may be determined based on the content of data or a communication protocol signal or the presence or absence of input.

[Example] Example 1 (Claim 1)-Printed matter Printing means: Inkjet printer output (MJ-5000C, Seiko Epson) Ink: 4-color aqueous ink (C, M, Y, K) Recording paper ： Superfine paper Fine paper Paper high gloss paper Dedicated gloss film Dedicated OHP sheet ・ Resin liquid: Resin (vinyl chloride / vinyl acetate copolymer resin + acrylic resin) + solvent (# 100 solvent (H)) Solvent type overprint varnish ・Resin liquid supply means: sponge ・ Contact material for resin liquid curing: Natural rubber roller (φ40mm, hardness 20 degrees) Candy rubber roller (φ40mm, hardness 30 degrees) Olefin elastomer roller (φ40mm, hardness 50 degrees) Butyl rubber roller (φ30mm, hardness 40) Degree) Chloroprene rubber roller (φ40mm, hardness 20 degree) Under the above conditions, the resin layer is formed on the printing surface by the method of FIG. As a result, all of the above five types of solid contact materials harden the resin liquid within 2 minutes with any of the above resin liquids and overprint varnishes. A resin layer could be formed.

Example 2 (Claim 1)-Printed matter Printing means: Offset printed matter Ink: Four-color oil-based ink (C, M, Y, K) Recording paper: Coated paper Fine paper PET film-Resin liquid: Resin ( Rosin-modified phenolic resin) + Solvent (Dialen 168) Solvent type overprint varnish ・ Resin liquid supply means: Urethane rubber roller (φ30mm, hardness 60 degrees) Blade (made of stainless steel) ・ Contact material for resin liquid curing: Natural rubber roller (φ40mm, hardness) 20 degrees) Candy rubber roller (φ40 mm, hardness 30 degrees) Olefin elastomer roller (φ40 mm, hardness 50 degrees) Butyl rubber roller (φ30 mm, hardness 40 degrees) Chloroprene rubber roller (φ40 mm, hardness 40 degrees) With the configuration, the resin layer was formed on the printing surface by the method shown in FIG. 2 (C). In Towanisu, than PET film resin liquid is cured within 2 minutes, the resin solution was cured in about 3 minutes with respect to the PET film. In addition, even when a water droplet was brought into contact with the surface of the resin layer, a good colorless and transparent resin layer without ink bleeding could be formed.

Example 3 (Claim 2)-Printed matter Printing means: Offset printed matter Ink: 4-color oil-based ink (C, M, Y, K) Recording paper: Coated paper Fine paper PET film-Resin liquid: Resin ( Rosin-modified phenol resin) + solvent (Dialen 168) Resin (ester resin) + solvent (Dialen 168) ・ Resin liquid supply means: Nitrile rubber roller (φ30 mm, hardness 30 degrees) ・ Contact material for resin liquid curing: Silicone gel roller (se1821) (Two-component), Toray Dow Corning Silicone) Silicone gel roller (se1880 (one-component), Toray Dow Corning Silicone) Silicone rubber roller (φ40mm, hardness 20 degrees) One-component RTV rubber (Shin-Etsu Chemical Co., Ltd.) Roller: A silicone rubber roller (φ20 mm, hardness: 20 degrees) that is applied to a thickness of about 1 mm and cured at room temperature for half a day. Under the above conditions, the resin layer was formed on the printing surface by the method of FIG. 2B with the configuration of FIG. The resin liquid was cured within seconds, and the resin liquid was cured in about 20 seconds for the PET film. In addition, even when a water droplet was brought into contact with the surface of the resin layer, a good colorless and transparent resin layer without ink bleeding could be formed.

Example 4 (Claim 3) The conditions, apparatus configuration and resin layer forming method were the same as in Example 3, and the resin liquid was cured using a mirror-like silicone rubber roller shown below as the contact member. The transfer of the resin liquid to the contact member could be minimized, and the resin liquid hardened in about 5 seconds with any resin liquid, and a resin layer having excellent gloss was formed on the printed surface.・ Contact member C: Silicone rubber roller (φ20mm, hardness 20 degrees) ... 10 points average roughness = about 1μm

Example 5 (Claim 4) Printed matter Printing means: stencil printing machine output Ink: Emulsion ink Recording paper: Exclusive paper Fine wood Straw half paper Resin liquid: Resin (rosin-modified phenolic resin) + Solvent (Dialen 168: 0) No. solvent (H) = 4: 1) Resin (rosin-modified phenol resin) + oil (linseed oil) + solvent (AF7 solvent: dialen 168 = 1: 4) Varnish (alkyd resin varnish) + oil (linseed oil) + Solvent (AF7 Solvent: Dialen 168 = 1: 4) Oxidation polymerization drying type overprint varnish ・ Resin liquid supply means: Urethane rubber roller (φ30mm, hardness 60 degrees) ・ Contact material for resin liquid curing: Machine oil + sponge roller (Rubicell) , Toyo Polymer) + rubber roller (60 degrees) Grease + sponge roller (Rubicell, Toyo Polymer) + rubber roller (60 degrees) Engine oil + sponge roller (Rubicell, Toyo Polymer) + Rubber roller (60 degrees) Under the above conditions, the resin layer is formed on the printing surface by the resin liquid applying method shown in FIG. 2A and the resin liquid curing method shown in FIG. As a result, the resin liquid hardened in about 1 minute with any of the above-mentioned resin liquids and overprint varnishes for all three types of contact members. The resin layer did not peel off even when the surface of the resin layer was rubbed. The formation could be performed.

Example 6 (Claim 5) • Printed matter Printing means: stencil printing machine output Ink: emulsion ink Recording paper: special paper high-quality paper, straw half paper • Resin liquid: resin (rosin-modified phenolic resin) + solvent (Dialen 168: 0) No. solvent (H) = 4: 1) Resin (rosin-modified phenol resin) + oil (linseed oil) + solvent (AF7 solvent: dialen 168 = 1: 4) Varnish (alkyd resin varnish) + oil (linseed oil) + Solvent (AF7 Solvent: Dialen 168 = 1: 4) Oxidation polymerization drying type overprint varnish ・ Resin liquid supply means: Metal (stainless steel) blade + rubber roller (two steps) ・ Contact material for resin liquid curing: Silicone oil (KE -1031-A + B, Shin-Etsu Chemical) + Sponge roller (Rubicell, Toyo Polymer) + Rubber roller (60 degrees) Silicone oil (KF96-50, Shin-Etsu Chemical) + Sponge roller (Rubicell, Toyo Polymer) + Rubber Roller (60 degrees) Methyl hydrogen silicone oil (SH1107, Toray Dow Corning Silicone + sponge roller (Rubicel, Toyo Polymer) + rubber roller (60 degrees) Silicone gum (Toray Dow Corning Silicone) + rubber roller Under the conditions, the resin layer was formed on the printing surface by the resin liquid application method of FIG. 2C and the resin liquid curing method of FIG. The resin liquid hardened in about 5 seconds with any of the above resin liquids and overprint varnishes, and the resin layer did not peel off even when the surface of the resin layer was rubbed, so that a good colorless and transparent resin layer could be formed.

Example 7 (Claim 5) Printed matter Printing means: Electrophotographic output Ink: Dry toner Recording paper: Plain paper (TYPE 6200, Ricoh) Recycled paper (paper source, Ricoh) Resin liquid: Resin (rosin-modified phenol) (Resin) + solvent (Dialen 168) Oxidation polymerization dry type overprint varnish ・ Resin liquid supply means: Metal (stainless steel) blade + rubber roller (two steps) ・ Contact material for resin liquid curing: Silicone gum (Toray Dow Corning Silicone) ) + Rubber roller Heating means: Xenon lamp Under the above conditions, the resin layer is formed on the printing surface by the resin liquid applying method shown in FIG. 2C and the resin liquid curing method shown in FIG. As a result, in all three types of contact members, the resin liquid hardened in about 3 seconds with any of the above resin liquids, the resin layer did not peel off even when the resin layer surface was rubbed, and a good colorless and transparent resin layer was formed. It could be.

Example 8 (Claim 6) The same conditions, apparatus configuration, and resin liquid curing method were used as in Example 3, and when a printed matter by the sublimation type thermal transfer method was used, the surface was embossed as shown in FIG. As a result of performing the resin liquid curing using the processed silicone rubber roller as a contact member, an embossed resin layer was formed on the printing surface, and a resin layer that was less likely to have fingerprints and scratches on the printing surface was formed.・ Resin liquid curing contact material: RTV rubber roller for embossing

Embodiment 9 (Claim 7) The conditions, apparatus configuration, and resin liquid curing method were the same as those in Embodiment 4, and the resin liquid application method was performed by the method shown in FIG. Only the resin layer could be formed, and a printed surface in which a partial area was excellent in glossiness and emphasized could be obtained. In addition, the plate used consists of the following materials,
A surface where the receding contact angle decreases when it is brought into contact with a contact member such as a liquid or a solid that generates a liquid in a heated state, and the receding contact angle increases when heated in a non-contact state with a liquid or a solid that generates a liquid Has characteristics.・ Plate composition: ・ Recording layer material: Emulsion polymerization type perfluoroalkyl acrylate (LS317 [Asahi Glass]), thickness: 1 μm ・ Recording substrate: roughened PET film, size: 350 × 220 mm, thickness: 25 μm

Example 10 (Claim 8) The conditions, apparatus configuration and resin liquid curing method were the same as in Example 2, and the resin liquid application method was performed by using a spray gun shown below and a resin liquid having the following viscosity. As a result of using the method of 12 (A),
Because there was no ink transfer to the resin liquid application means, it was possible to apply the ink well even when the ink was uncured or undried, and the resin layer could be formed only on an arbitrary area of the printing surface. .・ Resin liquid viscosity: 10 ² cp (resin liquid similar to that in Example 2) ・ Resin liquid supply means: spray gun (Iwata painting)

Embodiment 11 (Claim 9) The conditions for implementing the contact pressure between the printing surface and the resin liquid curing means are described below.

[0073]

[Table 1]

The conditions, the device configuration, and the resin liquid curing method were the same as in Example 2, and the resin liquid curing method was the same as in Example 4. A good resin layer was formed without contact failure.

Example 12 (Claim 10) Printing was performed by an electrophotographic method using the apparatus configuration of FIG. 14, and the resin liquid and the resin layer forming method were the same as in Example 1. The printed surface was uniform and excellent in gloss. A resin layer could be formed.

[0076]

According to the first aspect of the present invention, there is provided a coating means for applying a resin solution obtained by dissolving a resin in a solvent to a printing surface of a recording medium, and a resin liquid curing method for curing the resin liquid applied by the coating means. In the resin layer forming apparatus for forming a resin layer on the printing surface, the resin liquid curing means, using a solid material showing swelling property to the solvent as a contact material for the resin liquid, Protection of printed surface, glossing, and waterproofing can be easily performed.

According to a second aspect of the present invention, in the first aspect of the present invention, a silicone resin is used as the swellable solid material, so that protection of a printing surface, glossing, and waterproofing can be easily performed at a high speed. it can.

According to a third aspect of the present invention, in the first or second aspect, the surface shape of the solid material is a mirror surface.
The surface quality of the printing surface protection, glossing and waterproofing is improved.

According to a fourth aspect of the present invention, there is provided an application means for applying a resin solution obtained by dissolving a resin in a solvent to a printing surface of a recording medium;
A resin liquid curing device that cures the resin liquid applied by the coating device, wherein the resin liquid curing device has compatibility with the solvent in a resin layer forming apparatus that forms a resin layer on the printing surface. In addition, since a liquid material having a sufficiently large molecular weight compared to the solvent is used as a contact material for the resin liquid, even if the roughness of the printed surface is large, the protection, glossing and waterproofing of the printed surface can be achieved. Easy.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, since the liquid material is a silicone resin having fluidity, the printing surface can be easily protected, glossed, and waterproofed at a high speed. it can.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, there is provided a means for forming a mat or an embossed shape, and the surface shape of the resin layer is made to be a mat shape or an embossed shape. Adhesion of fingerprints and scratches on the printed surface can be easily prevented.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects of the present invention, the coating means can form the resin layer only in a predetermined area of the printing surface. Therefore, since waterproofing, protection, and glossing can be performed only in necessary areas, partial emphasis on the printed surface and consumption of resin liquid can be suppressed.

According to an eighth aspect of the present invention, in any one of the first to seventh aspects of the present invention, the coating means applies the resin liquid by using a spray or a jet nozzle. It is possible to prevent the transfer of the ink from the ink to the resin liquid application means and the contamination of the printed surface.

According to a ninth aspect of the present invention, in any one of the first to eighth aspects of the present invention, the resin liquid curing means changes a contact pressure between the contact material and the printing surface according to a surface condition of the printing surface. Therefore, it is possible to form a resin layer on the printing surface without deteriorating the quality of the printed image.

According to a tenth aspect of the present invention, there is provided a printing means, and the resin layer forming apparatus according to any one of the first to ninth aspects,
Since the resin layer can be formed on the printing surface of the recording medium created by the printing means by the resin layer forming device, dust contamination on the printing surface can be prevented.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an outline of an apparatus configuration to which a resin layer forming apparatus according to the present invention is applied.

FIG. 2 is a configuration diagram of a main part for describing the invention of claim 1;

FIG. 3 is a main part configuration diagram showing an example of a means for shortening a resin liquid curing time in the resin layer forming apparatus of the present invention.

FIG. 4 is a diagram showing the relationship between the volume fraction of the resin in the resin liquid according to the present invention and the temperature.

FIG. 5 is a main part configuration diagram showing another example of the means for shortening the resin liquid curing time in the resin layer forming apparatus of the present invention.

FIG. 6 is a main part configuration diagram showing still another example of the means for shortening the resin liquid curing time in the resin layer forming apparatus of the present invention.

FIG. 7 is an enlarged view of a surface of a contact member for explaining the invention of claim 3;

FIG. 8 is a main part configuration diagram for explaining the invention of claim 4;

FIG. 9 is a main part configuration diagram for explaining the invention of claim 5;

FIG. 10 is an enlarged view of a main part of a recording paper or a contact material for explaining the invention of claim 6;

FIG. 11 is an enlarged view of a resin liquid application unit for explaining the invention of claim 7;

FIG. 12 is an enlarged view of a resin liquid applying means for explaining the invention of claim 8;

FIG. 13 is an enlarged view of a main part of a resin layer curing means for explaining the invention of claim 9;

FIG. 14 is an apparatus configuration diagram for explaining the invention of claim 10;

FIG. 15 is an apparatus configuration diagram for explaining the invention of claim 10;

FIG. 16 is an apparatus configuration diagram for explaining the invention of claim 10;

FIG. 17 is an apparatus configuration diagram for explaining the invention of claim 10;

FIG. 18 is a diagram showing an apparatus configuration and a chart for explaining the invention of claim 10;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Resin layer formation unit (resin layer formation means), 2 ... Recording medium (recording paper), 2 '... Resin layer formed recording paper, 3 ... Ink, 4 ... Resin liquid, 4' ... Resin layer, 5 ... Supply Paper roller, 6 ...
Peltier element, 7: thermal conductor, 8: heater, 9: heating source, 10: resin liquid applying means, 11: pressure roller, 12:
Resin-impregnated porous body, 13, 14, 14 '... rubber roller,
15 ... blade, 16 ... plate, 17 ... offset roller,
18, 19 ... resin liquid injection means, 20 ... resin liquid curing means,
21: pressure roller, 22, 25: porous body impregnated with liquid contact material, 23, 24, 24 ': rubber roller, 26: liquid contact material injection means, 27: liquid suction means, 30: fine particles,
31: matte or embossed, 32: matte or embossed roller on the surface, 33: contact material impregnated porous body, 34: contact material, 40: printing means, 41 ...
Powder colorant supply means 42, photoreceptor 43 light source 44
Ink jet recording means, 45: plate, 46: stencil, 47
... sublimation type thermal transfer recording means, 48 ... print control unit, 50 ... printed machine recording paper set position, 51 ... paper detection sensor, 52 ...
signal.

Claims (10)

[Claims] 1. A printing method, comprising: a coating means for applying a resin liquid in which a resin is dissolved in a solvent to a printing surface of a recording medium; and a resin liquid curing means for curing the resin liquid applied by the coating means. In a resin layer forming apparatus for forming a resin layer on a surface, the resin liquid curing means uses a solid material swellable in the solvent as a contact material for the resin liquid. 2. The resin layer forming apparatus according to claim 1, wherein a silicone resin is used as the swellable solid material. 3. The resin layer forming apparatus according to claim 1, wherein the surface shape of the solid material is a mirror surface. 4. A printing apparatus comprising: a coating means for applying a resin solution obtained by dissolving a resin in a solvent to a printing surface of a recording medium; and a resin liquid curing means for curing the resin liquid applied by the coating means. In a resin layer forming apparatus for forming a resin layer on a surface, the resin liquid curing means has a compatibility with the solvent, and a liquid material having a sufficiently large molecular weight as compared with the solvent is used as a contact material for the resin liquid. A resin layer forming apparatus characterized by being used as a resin layer. 5. The resin layer forming apparatus according to claim 4, wherein a silicone resin having fluidity is used as the liquid material. 6. The resin layer forming apparatus according to claim 1, further comprising a mat or embossed shape forming means, wherein the surface shape of the resin layer is matted or embossed. Resin layer forming device. 7. The resin layer forming apparatus according to claim 1, wherein said coating means is capable of forming said resin layer only in a predetermined area of said printing surface. Resin layer forming apparatus. 8. The resin layer forming apparatus according to claim 1, wherein said applying means performs the application of said resin liquid by using a spray or a jet nozzle. Forming equipment. 9. The resin layer forming apparatus according to claim 1, wherein the resin liquid curing unit changes a contact pressure between the contact material and the printing surface according to a surface state of the printing surface. A resin layer forming apparatus. 10. A printing device, comprising: the resin layer forming device according to claim 1; and a resin layer formed by the resin layer forming device on a printing surface of a recording medium created by the printing device. An image forming apparatus characterized in that it can be formed.