JP2003237220A - Image forming method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image forming method enabling attainment of a desired image density even when a transfer sheet containing a coloring material of a low intrinsic density in a transfer layer is used. <P>SOLUTION: In the image forming method, a transferability accelerating material capable of lowering the transfer temperature of a transfer recording layer is given like an image to either the surface of the transfer recording layer of the transfer sheet having this layer on a substrate or the image receiving surface of an image receiving sheet, so as to form a latent image. Then, the surface of the transfer recording layer of the transfer sheet and the image receiving surface of the image receiving sheet are brought into close contact with each other and heated, so that the portion of the transfer recording layer corresponding to the latent image be transferred onto the image receiving sheet. Subsequently, the surface of the transfer recording layer of a transfer sheet identical with or different from the above transfer sheet is brought into close contact with the transfer surface of the image receiving sheet and heated. Retransfer thereby onto the portion corresponding to the latent image is executed one time at least. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to an image forming method. An image is formed on a transfer member such as paper or film.
One of the methods is a thermal transfer method. This thermal transfer method
Transfer layer consisting of pigment-based dye as a transfer material on the support surface
The formed transfer body (transfer sheet) is received on paper, film, etc.
Overlay with image body (image receiving sheet), back side of transfer sheet support
View from the side with a thermal head, laser head, etc.
Heat is applied, the dye is transferred to the image receiving sheet,
An image is formed on the screen. Such a thermal transfer system
In another embodiment, the dye disposed on the transfer body is heated.
Some of them are sublimated and transferred to an image receiving sheet. A thermal transfer system is used for image-wise heating.
Due to variations in head resistance when using the
As a result, the temperature distribution tends to be non-uniform.
There was a problem that the image was uneven. The image part
Since only local high temperature heating is performed, the support of the heating part
Deformed and wrinkled easily. Ma
As a means to improve image uniformity, thermal transfer method
There is a method that uses laser light for heating in
The installation cost is high, and for local high-temperature instantaneous heating
As a result, materials such as pigments are decomposed and the final image is formed.
There has been a problem that unevenness is likely to occur in the image. Furthermore, in this thermal transfer system, the transfer
If the intrinsic density of the color material contained in the transfer layer
(For example, inorganic pigments), to increase the density of the resulting image,
It is necessary to increase the film thickness of the coating layer, but increase the film thickness.
The resolution of the created image is reduced and fine points cannot be reproduced.
Become. Furthermore, if the film thickness is increased, uniform transfer cannot be performed.
As a result, unevenness of the transferred image occurs. Instead of increasing the film thickness
For example, a method of overlaying images by repeating transfer multiple times is considered.
However, this method is inefficient and produces subtle image shifts.
To be born. In particular, inorganic face for ceramic baking as the coloring material
In general, the intrinsic concentration is low and the concentration is high.
The above-mentioned problem was remarkable for obtaining a mapping. On the other hand, the present inventor first modified the thermal transfer system.
As a good method, a transfer sheet having a transfer recording layer on a support can be used.
And an image receiving sheet, the image forming method comprising:
Transfer sheet layer surface of copy sheet or image receiving surface of image receiving sheet
In any of these cases, the transfer temperature can be lowered in the transfer recording layer.
Latent image shape that forms a latent image by applying image-enhancing material to the image
And a transfer recording layer surface of the transfer sheet and the image receiving sheet.
To the latent image on the transfer recording layer.
A transfer step for transferring the corresponding part onto the image receiving sheet;
An image forming method was proposed. This image forming method is
Damage to the support due to heat and image defects
Improve uniformity and form images with excellent hue reproducibility
Yes. In addition to this point, the transferability of fine dots is well resolved.
It has a feature that a highly-transferred image can be obtained. Only
However, this image forming method also has a low intrinsic density.
The desired image density using a transfer sheet containing
When trying to obtain a degree, it is the same as the above thermal transfer method
There is room for improvement. The present invention is as described above.
The purpose of this is
When using a transfer sheet that contains a color material with low concentration in the transfer layer
Even if the image formation method can achieve the desired image density
To provide a law. The above object of the present invention is as follows.
This is solved by providing the following image forming method. (1) Transfer of transfer sheet having transfer recording layer on support
On either the recording layer surface or the image receiving surface of the image receiving sheet,
Transferability promoting material that can lower the transfer temperature of the transfer recording layer
After the image is applied and a latent image is formed, the transfer sheet is transferred.
Add the image-recording layer surface and the image-receiving surface of the image-receiving sheet in close contact.
A portion corresponding to the latent image of the transfer recording layer is heated and the image receiving sheet
Then, transfer the image onto the transfer surface of the image receiving sheet.
Transfer recording on the same or different transfer sheet
By heating the layer surface in close contact with the latent image,
Re-transfer to the corresponding part at least once Image form
How to complete. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Step of Image Forming Method of the Present Invention
Is a step of forming a latent image. The latent image formation process
Or the image receiving surface of the image receiving sheet.
Transferability that can lower the transfer temperature of the transfer recording layer.
It is a step of applying an accelerating material imagewise. Latent image formation process
In the above, the transfer property promoting material was subjected to the first transfer.
On the transfer surface of the image-receiving sheet, transferability-promoting material will be applied
Is applied so as to remain as much as possible. And
In the image forming method of the present invention, the latent image forming step is performed.
The transfer process is performed twice or more compared to one time.
And That is, after the latent image is formed, the transfer sheet is transferred.
Add the image-recording layer surface and the image-receiving surface of the image-receiving sheet in close contact.
A portion corresponding to the latent image of the transfer recording layer is heated and the image receiving sheet
Then, transfer the image onto the transfer surface of the image receiving sheet.
Transfer recording on the same or different transfer sheet
By heating the layer surface in close contact with the latent image,
Re-transfer to the corresponding part at least once
The Immediately after the first transfer step, the transfer surface of the image receiving sheet is
Because it retains the function that can lower the transfer temperature, this
Adhere the same or different transfer sheet on top
When heated, the top of the image formed by the first transfer
Further, an image can be formed by overlapping. Also, the image forming method (the following multicolor field)
Used for the second and subsequent transfer.
Same as transfer sheet (transfer sheet used for the first transfer)
"Same transfer sheet" or "Different transfer sheet"
Is the same hue as the transfer sheet used in the first transfer?
Transfer sheets with the same density are required (in this case more than twice the image)
Image density is obtained), and different transfer sheets have the same hue
Transfer sheets with different densities (in this case, the image density is 1 or more times higher)
Degree) or a transfer sheet with a different hue (this
In this case, a composite color is obtained).
The copying sheet is a transfer sheet having a different density and hue. Different
When using a transfer sheet with a hue of
There is an advantage that can be obtained. Thus, according to the image forming method of the present invention,
For example, image transfer can be performed twice or more for each latent image formation.
Transfer layer containing a color material having a low intrinsic density
The desired image density even when using a transfer sheet
Is obtained without causing degradation of resolution and image unevenness.
In addition, complex colors can be easily obtained. Shi
Therefore, a wide range of pigment-based dyes (light resistance)
Use excellent pigments, metal pigments, functional pigments, etc.)
As in the case of ink jet recording ink
There is no need to select pigments and dyes due to restrictions on physical properties
The Therefore, a desired color can be obtained by the image forming method of the present invention.
Phase and desired properties (image density, durability, hue reproducibility
Can be formed. Also conventional
The resistance value of the thermal head
Heat conduction unevenness caused by uneven contact, uneven contact, and uneven support thickness
Of course, it is possible to form a uniform image.
It is. When a multicolor image is formed, a plurality of colors are transferred.
For some or all of the copy sheet, the above image
Apply the forming method. For example, black (K), cyan
(C), magenta (M), yellow (Y) color transfer
If a sheet is used, a specific color (for example, black)
Color) transfer sheet, and latent image formation as described above, 1
The second image transfer and the second and subsequent image transfer are performed.
After this, a small amount of transferability promoting material remaining on the image receiving sheet is removed.
Therefore, it is preferable to heat dry the image receiving sheet surface.
Yes. Next, a transfer sheet that is different in color from the first transfer sheet.
Use the same procedure to form an image using a
A large image is formed. First, materials used in the image forming method of the present invention
Will be described. [Transferability Accelerating Material] Transfer temperature of the thermal transfer material in the present invention
Examples of liquid transferability promoting materials that can reduce the degree of
Examples include water, organic solvents, and surfactants.
The Among them, organic solvents that are freely miscible with water at room temperature and
Surfactants that are miscible with water and mixtures thereof
desirable. In addition, transferability-promoting materials are stable over time and nozzle.
From the standpoint that there is no concern about clogging
Does not contain compounds that precipitate over time
When using a color material for the recording layer, the color tone will not be affected.
From the point of view of
In addition, coloring reaction by applying energy such as heating
It is a material that does not cause any problems.
Things are desirable. Organic solvents that are freely miscible with water include:
Specifically, methyl alcohol, ethyl alcohol, n
-Propyl alcohol, isopropyl alcohol, n-
Butyl alcohol, sec-butyl alcohol, isobutyl
Alcohol, ethylene glycol, diethylene glycol
Thiodiethylene glycol, triethyleneglycol
Polyethylene glycol, propylene glycol,
Butylene glycol, 1,2,6-hexanetriol, hex
Silene glycol, polypropylene glycol, glyce
Monohydric or polyhydric alcohols such as phosphorus, ethylene glycol
Cole monomethyl ether, ethylene glycol monoe
Chill ether, ethylene glycol monobutyl ether
, Diethylene glycol monomethyl ether, diethyl
Ren glycol monoethyl ether, ethylene glycol
Rudiethyl ether, propylene glycol monomethyl
Ether, propylene glycol monoethyl ether,
Propylene glycol monobutyl ether, triethylene
Glycol monoethyl ether, triethyleneglycol
Monobutyl ether, tripropylene glycol
Ethers such as nomethyl ether, diacetone alcohol
Ketoalcohols, N-methyl 2-pyrrolidone, 2-pi
There are nitrogen-containing solvents such as loridone. In terms of safety and environmental impact, etc.
Is preferably water or a mixture of water and an organic solvent. Water and organic
When used in combination, the organic solvent used is water-soluble.
It is preferable. These organic solvents are 1-9 in the solution.
0% by mass is contained. If the content exceeds 90% by mass,
The ejection stability during image formation is increased, but the transfer image is less dry.
There is a tendency to decrease. Also, if it is less than 1% by mass, it is discharged
It becomes difficult to improve stability and transferability of fine dots. Optimal
The amount depends on the need to dry the transfer and the drying capacity of the equipment.
Determined. Further, the transferability accelerating material is an organic solvent as described above.
It is a compound that dissolves in the medium and is represented by the following general formula (1)
It is preferable to contain the compound. In general formula (1), R
₁ Represents hydrogen or the following structure: R ₂ Indicates an alkyl group
The ## STR1 ## ## STR2 ## Also, R _Three Represents an alkyl group. R ₂ and
R _Three Is preferably an alkyl group having 1 to 5 carbon atoms. Specifically
Are methyl, ethyl, n-propyl, isopropyl
Group, n-butyl group, isobutyl group, sec-butyl
Group, tert-butyl group, n-pentyl group, isopentyl group
Group, neopentyl group, tert-pentyl group, etc.
It is done. As the compound represented by the general formula (1),
The following can be illustrated. Embedded image Embedded image These may be used alone or in combination of two or more.
May be. In transfer-promoting material (latent image forming solution)
The content of the compound represented by the general formula (1) is 0.1 to 2
0% by mass is preferable, and 0.1 to 15% by mass
More preferably. The content is less than 0.1% by mass
And a clear latent image is not formed, and exceeds 20% by mass.
Secondary color fog is likely to occur and the resolution is low.
Tend to go down. Surfactants that are miscible with water include:
Nonionic, cationic, nonionic, amphoteric surfactants
Deviation is also arbitrarily selected according to the characteristics of the thermal transfer material used
Can be dissolved in water and a mixture of water and organic solvents.
It can be used at a concentration within an understandable range. Specifically fatty acids
Salt, alkyl sulfate ester salt, polyoxyethylene alcohol
Kill ether sulfate, alkylbenzene sulfo
Phosphate, alkyl naphthalene sulfonate, alkyl
Sulfosuccinate, alkyl diphenyl ether disulfate
Phonate, alkyl phosphate, naphthalene sulfone
Acid formalin condensate, polyoxyethylene alkyl ether
Tellurium, polyoxyethylene alkylene alkyl ether
, Polyoxyethylene fatty acid ester, polyoxye
Tylene alkylamine, alkylalkanolamine,
Examples thereof include alkylamine salts and alkylbetaines. In the image forming method of the present invention,
Contains nonionic surfactant and water as a photo-promoting material
Use a solution that greatly reduces the transfer temperature.
In addition, because the transfer of fine points is good, transfer images with high resolution
An image can be obtained. The reason for this is always clear
Although there is no wettability or permeability to the transfer layer or image receiving layer
For this reason, it is necessary to form a sharp latent image of fine dots.
And if it penetrates the transfer layer or image receiving layer,
Effect as a plasticizer for resins used
As a result, the adhesiveness of the latent image forming part due to heat is expressed.
This is considered to produce a transfer effect. Furthermore, the penetrated noni
On-type surfactant is applied to the interface between the support of the transfer layer and the coating layer.
The effect of aligning and facilitating peeling transfer is also conceivable. Water in solution
About 5 to 95% by mass is contained. Nonionic surface active
Among the agents, among them, as the hydrophilic group, ethylene oxide
By using a nonionic compound to which a group is added,
High transfer temperature reduction effect and high resolution
I found out. The following general formula 2 as a nonionic compound
Or a compound represented by formula 5 or the like. Embedded image In the above general formula 1, R is an alkyl group.
Or an alkylene group, n is 2 to 30, preferably 2
-20 represents an integer, and in general formula 2, R represents an alkyl group
N represents an integer of 2 to 30, preferably 2 to 20,
In the general formula 3, R represents an alkyl group, and n and l are
2-30, preferably 2-20 integers,
R in Equation 4 ₁ And R ₂ Represents hydrogen or an alkyl group
M and n are 2 to 30, preferably 2 to 20 integers.
Show. In the above general formulas 1 to 4, ethylene oxide
The addition number of side is preferably 2 to 30, particularly preferably
Is 2-20. Ingredients of compounds of general formulas 1-4 above
For example, polyoxyethylene (4) lauryl ether
, Polyoxyethylene (7) cetyl ether, polyoxy
Siethylene (13) stearyl ether, polyoxyethylene
Len (5) oleyl ether, polyoxyethylene (10)
Nonyl phenyl ether, ethylene oxide propylene
Lene oxide copolymer (n = 10, l = 7), acetylene
Ethylene oxide adduct of glycol (n + m = 10), etc.
However, it is not limited to these. The nonionic surfactant described above promotes transcription.
0.1 to 20% by mass in the material (discharge liquid), preferably
About 0.1 to 10% by mass is added. The amount added is 2
If it exceeds 0 mass%, the resolution tends to decrease. Ma
On the other hand, if it is less than 0.1% by mass, the effect of promoting transferability can be obtained.
It becomes difficult. In addition to the nonionic surfactant,
A water-soluble organic solvent can be added. Water-soluble organic
As an organic solvent that is freely miscible with water,
Those listed can be used. Water-soluble organic solvent content
Is suitably about 0 to 90% by mass in the solution. In particular, boiling point
When the solvent content is 100 ° C or higher, the discharge is low when forming a latent image.
Although the qualitative property becomes high, the drying property of the transferred image is lowered. Optimal melting
The type of medium and the amount used are required to dry the transfer material, and
Determined by the drying capacity of the device. Furthermore, discharge suitability,
In order to maintain the storage stability of the liquid, a surface tension modifier,
Combined with viscosity modifiers such as glazes, polymers, pH modifiers, antifoaming agents, etc.
Can be used. Furthermore, in the image forming method of the present invention,
Boiling point of 1 under water and normal temperature and normal pressure as the transferability promoting material
An organic solvent that is at least 00 ° C. and compatible with water
Improves solution discharge stability by using a solution containing
Non-ejection phenomenon during latent image formation and restart after standby
In addition, the transferability of fine dots is improved.
Therefore, a high-resolution transfer body can be obtained. Whether the boiling point is 100 ° C. or higher under normal temperature and normal pressure.
Examples of organic solvents that are compatible with water
Cole, diethylene glycol, thiodiethylene glycol
, Triethylene glycol, polyethylene glycol
, Propylene glycol, polypropylene glycol
Monohydric or polyhydric alcohols such as
Tylene glycol monomethyl ether, ethylene glycol
Monoethyl ether, ethylene glycol monobuty
Luether, diethylene glycol monomethyl ether
, Diethylene glycol monoethyl ether, ethyl
Glycol diethyl ether, propylene glycol
Monomethyl ether, propylene glycol monoethyl
Ether, propylene glycol monobutyl ether,
Triethylene glycol monoethyl ether, triethyl
Lenglycol monobutyl ether, tripropylene group
Ethers such as recall monomethyl ether, diacetate
Keto alcohols such as alcohol, N-methyl 2-pyro
Examples include nitrogen-containing solvents such as lidone and 2-pyrrolidone.
The The transferability promoting material is a transfer material made of a thermal transfer material.
Improves transferability of any part of the recording layer and lowers transfer
Easy and complete transfer at printing temperature
It is used for the purpose. Transferability promoting material
At least partly penetrates the transfer recording layer or the image receiving layer,
It facilitates peeling of the transfer recording layer from the support.
The printability promoting material is preferably a surface tension of 20 to 60 mN /
m, viscosity 50 mPa.s. It is a liquid having physical properties of s or less.
Application of transferability promoting material to transfer recording layer or image receiving layer
Keep the amount within a range that does not reduce the resolution of the transferred image.
Is desirable. If too much is applied, the image area and non-image area
Penetration of transferability-promoting material at the interface, dissolution / flow of transfer recording layer
Motion may occur, and the sharpness of the image interface may be reduced. In the present invention, image transfer is performed twice or more.
Since this is done, the transfer surface of the image receiving sheet that has been transferred the first time
Remains the transferability promoting material used to form the latent image.
It is necessary. Therefore, transferability promoting material is transpiration.
Those having low properties are preferred. On the other hand, multicolor image formation is performed.
If the image forming surface is heated and dried before transferring other colors
In the case of a single color, it is
Since it is preferable to heat-dry the image forming surface,
The transpiration of the material is the drying capacity of the image forming system.
It is decided in consideration of. [Transfer sheet] Here, it is used for the method of the present invention.
The transfer sheet and the image receiving sheet that are used will be described. Book
The transfer sheet of the invention is a transfer sheet comprising a thermal transfer material on a support.
A recording layer is provided. Below, transfer sheet
Constituting support, and transfer recording layer, and further if desired
The other layers provided will be described in detail. <Support> The transfer sheet support is made of a material.
There is no particular limitation, and various support materials are used according to the purpose.
Can. As a preferable example of the support material,
Reethylene terephthalate, polyethylene-2,6-na
Phthalate, polycarbonate, polyethylene, polysalt
Vinyl chloride, polyvinylidene chloride, polystyrene, styrene
Examples of synthetic resin materials such as acrylonitrile copolymer
Can. Among them, biaxially stretched polyethylene terrestrial
Talate takes into account mechanical strength and thermal dimensional stability
It is preferable. The support is provided with a transfer recording provided thereon.
In order to improve the adhesion to the layer, roughening the surface
And / or provide one or more subbing layers
It is preferable. As an example of surface roughening treatment,
Low discharge treatment, corona discharge treatment, etc.
The For the material of the undercoat layer, both the support and the transfer recording layer
High adhesion to the surface, low thermal conductivity,
It is preferable that it is excellent in thermal property. Under such
Examples of coating layer materials include styrene, styrene-butadiene.
Examples include ene copolymers and gelatin. Undercoat
The total thickness of the layer is usually 0.01-2 μm. Also heat
On the surface of the transfer sheet opposite to the transfer recording layer side,
As necessary, various functional layers such as a release layer are provided, or
Can also be surface treated. <Transfer Recording Layer> The transfer recording layer displays a colored image.
In the case of forming, a colored image is transferred to the image receiving sheet.
Contains at least a pigment for forming, and further comprises a layer
A binder resin to form, and optionally, its
Contains other ingredients. In the present invention, transfer recording
The layer is not necessarily limited to a colored recording layer.
When used for forming printing plates, etc., use a colorless resin layer.
It may be, but it is transferred by the liquid transferability promoting material described above
It is necessary to have characteristics that improve the properties. One pigment
In general, organic pigments and inorganic pigments are broadly divided.
Excellent transparency, the latter is generally excellent in concealment
So that it can be selected appropriately according to the application.
Yes. The transfer sheet according to the present invention is printed as a color proof.
Generally used for printing ink when used for proofreading
With yellow, magenta, cyan, and black
Use organic pigments that match or have similar colors
Is done. In addition, metal powder, fluorescent pigments, etc. are also used.
There is a case. Examples of pigments that are preferably used include azo
Pigment, phthalocyanine pigment, anthraquinone face
Materials, dioxazine pigments, quinacridone pigments, isoi
Mention can be made of ndrinone pigments and nitro pigments
The Separate the pigments used in the transfer recording layer by hue,
Although it enumerates below, it is not limited to these. 1) Yellow pigment Hansa Yellow G, Hansa Yellow 5G, Hansa Yellow
-10G, Hansa Yellow A, Pigment Yellow L,
Permanent Yellow NCG, Permanent Yellow F
GL, Permanent Yellow HR. 2) Red pigment permanent red 4R, permanent red F2R,
Permanent red FRL, rake red C, rake
D, Pigment Scarlet 3B, Bordeaux 5B,
Alizarin Lake, Rhodamine Lake B. 3) Blue pigment phthalocyanine blue, Victoria blue lake, wh
Strsky blue. 4) Black pigment carbon black. Form picture ceramics, picture glass, etc.
The inorganic pigment contained in the transfer recording layer
You can always use the upper and lower paints used in pottery
For example, the crystal structure of copper oxide, cobalt oxide, etc.
Spinel, sphene, piecroa, rutile, ply
Delight, Phosphate, Fenasite, Perry
Kreis, olivine, badelite, borate, colanda
Metal oxides such as zirconia, cadmium yellow, etc.
Sulfides; cadmium selenide compounds such as selenium red
I can get lost. Inorganic pigments that are fluorescent pigments and phosphorescent pigments
May be used. Along with inorganic pigment in the transfer layer
A glass component may be contained. Use glass components together
And the ceramic body surface of the inorganic pigment in the sintering process
This is preferable because it can improve the fusing property. Previous
Glass components include lithium carbonate and sodium carbonate
Alkali, potassium carbonate, lead oxide, bismuth oxide, etc.
Metal compounds: barium carbonate, strontium carbonate, carbonic acid
Alkaline such as calcium, magnesium carbonate, zinc oxide
Earth metal compounds; aluminum oxide, aluminum hydroxide
Neutral components such as silicon oxide, boric acid, zirconium oxide
And acidic components such as titanium oxide. Also,
It is also possible to use complex components such as borax, feldspar and kaolin.
Yes. The glass component is one kind or two or more kinds.
Is used as a so-called frit.
Can be. In the transfer layer, the pigment content is 10 mass% to 80 quality.
It is preferably contained in an amount of 20% by mass to 70% by mass.
It is more preferable to make it contain. Also used in combination with glass components
When using glass components, it is preferable to use glass components depending on the pigment used.
The amount used is different, but it is a mixture of glass components and pigments.
In the transfer layer, 15 mass% to 70 mass% is contained.
It is preferable to contain 30% by mass to 80% by mass.
Is more preferable. The binder resin for the transfer recording layer is softened.
Amorphous organic polymer having a point of 40 ° C to 150 ° C is preferred
That's right. Examples of the amorphous organic polymer include
Tyral resin, polyamide resin, polyethyleneimine tree
Fat, sulfonamide resin, polyester polyol tree
Fat, petroleum resin, styrene, vinyl toluene, α-methyl
Styrene, 2-methylstyrene, chlorostyrene, vinyl
Benzoic acid, sodium vinylbenzene sulfonate, amino
Styrene such as styrene and its derivatives and substitutes alone
Polymers and copolymers, methyl methacrylate, ethyl meta
Chlorate, butyl methacrylate, hydroxyethyl
Methacrylates such as methacrylate and meta
Crylic acid, methyl acrylate, ethyl acrylate,
Butyl acrylate, α-ethylhexyl acrylate
Acrylic acid esters such as acrylic acid and butadiene
Dienes such as ethylene and isoprene, acrylonitrile, vinyl
Luethers, maleic acid and maleic esters
, Maleic anhydride, cinnamic acid, vinyl chloride, vinyl acetate
With vinyl monomers alone or with other monomers
Copolymers can be used. Two or more of these resins
It can also be used as a mixture. In addition, many image layers are formed on the same image receiving sheet.
(Transfer recording layer on which an image is formed)
When creating color images, improve the adhesion between the images.
Therefore, the transfer recording layer preferably contains a plasticizer. That
Examples of such plasticizers are dibutyl phthalate, phthalic acid
Di-n-octyl, di (2-ethylhexyl) phthalate,
Dinonyl phthalate, dilauryl phthalate, butyrate phthalate
Phthalate esters such as lulauryl and butylbenzyl phthalate
Tellurium, di (2-ethylhexyl) adipate, Sebashi
Aliphatic dibasic acid esters such as di (2-ethylhexyl) acid
Tellurium, tricresyl phosphate, tri (2-ethyl
(Xyl) phosphate triesters, polyethylene glycol
Polyol polyesters such as coal esters, Epoxy
An epoxy compound such as a fatty acid ester is exemplified. Ma
In addition to the above general plasticizers, polyethylene
Glycol dimethacrylate, 1,2,4-butant
Liol trimethacrylate, trimethylol etant
Reacrylate, pentaerythritol triacrelane
, Pentaerythritol tetraacrylate, dipen
Taerythritol-acrylic like polyacrylate
Acid esters also depend on the type of binder used
Are preferably used in combination. Use two or more plasticizers in combination.
May be. The plasticizer contains a pigment in the transfer recording layer.
The mass ratio of the total amount of the resin and the plasticizer is generally 1
00: 1 to 100: 3, preferably 100: 1.5 to 1
It is used to be 00: 2. The transfer recording layer
If necessary, surfactants, thickeners, etc. are added.
The In the transfer layer, a transfer image (dot)
Contains a wax component to improve film resolution and resolution
It is preferable to make it. Method using transfer-accelerating material
And wax in both methods using thermal transfer printer
It is preferable to contain the component,
This is important when forming an image. As the wax component, for example, para
Fin wax, microcrystalline wax, cal
Nava wax, candelilla wax, rice wax
, Fischer-Tropsch wax, beeswax, wood wax, whale
Wax, Ibotaro, Wool wax, Shellac wax, Betro
Lactam, polyester wax, lanolin, low molecular weight
Polyethylene wax, amide wax, ester wax
, Oxidized polyethylene wax, rosin, rosin meth
Rolled amide, ester gum, higher fatty acid, higher fat
Examples thereof include fatty acid esters and higher alcohols. The transfer recording layer includes an image receiving sheet,
Improves adhesion to transfer sheet and prints more times
(Monochrome and 2 or more color images)
Relatively low to improve transfer layer (material) paste in transition
Melting point thermoplastics such as low molecular weight petroleum resins,
Livinyl butyral resin, ethylene-vinyl acetate copolymer
, Ethylene-acrylic acid ester copolymer, styrene
-Acrylate ester copolymer, styrene-maleic acid
-It is preferable to add acrylic acid ester copolymer, etc.
Yes. The transfer recording layer comprises a pigment and the binder resin.
A coating solution is prepared by dissolving or dispersing
Apply on top (on the undercoat on the support) and dry.
Can be provided. Used in the preparation of coating solutions
Examples of the solvent include n-propyl alcohol, methyl ethyl
Luketone, propylene glycol monomethyl ether
(MFG), methanol and the like. Application, drying
Can be done using normal coating and drying methods
The The layer thickness (dry layer thickness) of the transfer recording layer is 0.1 to 5.
It is 0 μm, preferably 0.3 to 3.0 μm. A transfer recording layer is laminated in this order on the support.
The transfer recording layer surface of the transfer sheet having the structure described above, or described later
A transfer-promoting material is applied to the surface of the image-receiving sheet.
When a latent image is formed, the thermal transfer that forms the transfer recording layer
Of the material, the portion of the latent image where the transfer-promoting material is attached
The transfer recording material penetrates into the transfer recording layer to form the layer.
The binder is loosened and the support and the image are formed.
The bond strength between the two layers is reduced and transfer to the image receiving sheet is improved.
And transfer at a lower temperature becomes possible. [Image-receiving sheet]
The image sheet is usually a support and one or more on the support.
An image receiving layer containing a binder resin of
More, a cushion layer, a release layer, between the support and the image receiving layer,
And one or two or more intermediate layers are provided.
It is preferable to use a layer having a parent to the transfer recording layer described above.
If the compatibility is good, polyethylene terephthalate (P
ET) resin sheet, plain paper, coated paper, glass epoxy
A xi sheet, a metal plate, or the like can also be used. Support
In the case of an image receiving sheet provided with an image receiving layer thereon, the support is received by the support.
A back layer for improving transportability is provided on the surface opposite to the image layer.
It is preferable to provide it. As the support, a plastic sheet is used.
Normal sheet such as glass, metal sheet, glass sheet, paper etc.
Toe-like substrates. Examples of plastic sheets
Polyethylene terephthalate sheet, polycar
Bonate sheet, polyethylene sheet, polyvinyl chloride
Sheet, polyvinylidene chloride sheet, polystyrene sheet
, Styrene-acrylonitrile sheet, polyester
A sheet etc. can be mentioned. Also as a paper support
May be printed paper, coated paper, or the like. The support has fine voids.
Can prevent curling and improve image quality
Therefore, it is preferable. Such a support is, for example, thermoplastic.
Highly incompatible with resins and inorganic pigments and thermoplastics
Melt extrusion of mixed melt mixed with fillers
Depending on the machine, the film may be a single layer or a multilayer film.
It can be produced by stretching biaxially.
In this case, selection of resin and filler, mixing ratio, stretching conditions
The porosity is determined by the above. As the thermoplastic resin, polypropylene is used.
Polyolefin resins such as polyethylene and polyethylene terf
Talate resin has good crystallinity, good stretchability, void
Is preferable because it is easy to form. The polyolefin
Main component is resin or polyethylene terephthalate resin
In combination with a small amount of other thermoplastic resin.
And are preferred. As an inorganic pigment used as the filler
The average particle size is preferably 1 μm or more and 20 μm or less.
, Calcium carbonate, clay, diatomaceous earth, oxidized titanium
, Aluminum hydroxide, silica etc. can be used
The In addition, as an incompatible resin used as a filler
When using polypropylene as the thermoplastic resin
Combined with polyethylene terephthalate as filler
Preferably. In addition, in the support, inorganic pigment, etc.
The content of filler is generally about 2 to 30% by volume.
The The thickness of the support of the image receiving sheet is usually 10 to 10.
400 μm, preferably 25 to 200 μm
Yes. Further, the surface of the support is an image receiving layer (or cushion).
With the image forming layer of the thermal transfer sheet
Corona discharge treatment, glow discharge to improve adhesion
Surface treatment such as treatment may be performed. The image forming layer is transferred onto the surface of the image receiving sheet.
In order to fix this, one or more image receiving layers are provided on the support.
It is preferable to provide it above. The image receiving layer is made of an organic polymer.
A layer formed mainly of a binder resin is preferred.
Good. The binder resin is a thermoplastic resin.
Examples thereof include acrylic acid and methacrylate.
Such as phosphoric acid, acrylic acid ester, methacrylic acid ester
Homopolymer of acrylic monomer and copolymer thereof,
Methylcellulose, ethylcellulose, cellulose acetate
Cellulosic polymers such as tate, polystyrene,
Polyvinyl pyrrolidone, polyvinyl butyral, polybi
Vinyl-based modules such as nyl alcohol and polyvinyl chloride
Nomer homopolymer and copolymer thereof, polyester
Condensation polymers such as rubber and polyamide, butadiene
-List rubber-based polymers such as styrene copolymers.
You can. The binder of the image receiving layer is between the image forming layer
Glass transition temperature (Tg)
Is preferably a polymer lower than 90 ° C. this
Therefore, it is also possible to add a plasticizer to the image receiving layer.
In addition, binder polymer is blocking between sheets
In order to prevent this, the Tg is preferably 30 ° C or higher.
That's right. As the binder polymer of the image receiving layer, transfer recording
Improves adhesion with the image forming layer at the time, sensitivity and image strength
The binder polymer of the image forming layer
It is particularly preferred to use the same or similar polymers
That's right. Next, an image forming method according to the present invention is performed.
Each will be described in turn. The first step of the image forming method of the present invention is
This is a step of forming a latent image. The latent image formation process
Either the surface of the transfer recording layer or the image receiving surface of the image receiving sheet
In addition, transferability that can lower the transfer temperature of the transfer recording layer
It is a step of applying an advance material to the image. In addition, the present invention
In the image forming method, the latent image forming step is performed once.
On the other hand, the transfer process is performed twice or more. As above, the first time
On the transfer surface of the transfer sheet that has been transferred,
In order to ensure transfer, transferability promoting material remains.
It is necessary to For this purpose, the transferability-promoting material
Use a low transpiration material as the organic solvent or
In addition to increasing the composition ratio of materials with low dispersion,
Compared to the case of single transfer, the transfer rate of the transferability promoting material is smaller.
A method such as increasing the dryness (100-150 VOL%)
It is. At this time, as described above, the system used for image formation.
It is desirable to consider the drying capacity of the system. In the following, the image form of the present invention will be described with reference to the drawings.
The production method will be described in detail. FIG. 1 shows an image forming method of the present invention.
FIG. 2 is a conceptual diagram showing a configuration of an image forming apparatus for carrying out
The The image forming apparatus 1 transfers the liquid droplets onto the transfer sheet 5.
An ejection head 13 for applying an accelerating material, and a transfer sheet 5;
A support door for bringing the image receiving sheet 11 into close contact and transferring the image.
It consists of a ram 3 and a pinch roller 7 equipped with heating means.
A pair of pressure rollers. Support drum 3 is supported
The transfer sheet 5 having the transfer recording layer formed on the body is a part of the outer periphery.
It is supported by being wrapped around the part. On support
In the transfer recording layer to be formed, pigment dyes, metal particles, etc.
Material, binder resin and the like. This embodiment
The case where the transfer material is a pigment-based dye will be described as an example. The transfer sheet 5 is supported on the support drum 3 on the support side.
The support drum so that the transfer recording layer side is on the surface.
3 is supported. The image forming apparatus 1 includes a support drum 3
The pinch rollers 7 in the same axial direction are arranged opposite to each other. This
Inside the pinch roller 7 is a heater that can control the temperature.
It is stored. The image forming apparatus 1 faces the transfer sheet 5
Thus, a droplet discharge head 13 is provided. Droplet discharge head
13 is a transfer sheet via a moving rail (not shown).
It is arranged so that it can move freely in the width direction. This droplet spout
The moving direction of the ejection head 13 is the main scanning method for image formation.
It becomes the direction. The droplet discharge head 13 is a liquid transfer promoting agent.
Liquid droplets made of material are ejected in an image-like manner onto the support drum 3
Form a latent image on the image transfer layer surface of the supported transfer sheet 5
To do. Between the support drum 3 and the pinch roller 7
Includes a transfer sheet on which a latent image is formed and an image receiving sheet 11.
Inserted. Between the support drum 3 and the pinch roller 7
The transfer sheet 5 and the image receiver 11 are received by the transfer recording layer.
Laminated so that the image receiving surface of the image sheet 11 is in close contact with each other.
The support drum 3 and the pinch roller 7 are heated while being heated.
By rotation, it moves to the right in the figure.
In this embodiment, an image receiver using a PET film as a support.
The case of a sheet will be described as an example. A portion where a latent image is formed by a transferability promoting material
The transfer temperature is lower than that of the surrounding transfer recording layer.
I'm down. Therefore, the heating of the pinch roller 7 at this time
The condition is the temperature at the contact portion between the latent image forming portion and the image receiving layer.
Is below the transfer temperature of the original transfer recording layer.
Latent image formation if the temperature range is set to be above the temperature
Part and non-formed part (part where transferability promoting material does not adhere)
Image transfer with clear on / off with
The The heating temperature is lower than the transfer temperature of the transfer recording layer, and
It is preferably in a range that exceeds the transfer temperature of the latent image portion. Next, the image receiving sheet after the first transfer is completed.
And a transfer sheet that is the same as or different from the transfer sheet
Are inserted between the support drum 3 and the pinch roller 7,
By applying heat and pressure, a formed image of the image receiving sheet (once
A transfer image is further formed on the eye transfer image. When a multicolor image is formed using this apparatus
As a color material contained in the transfer recording layer of the transfer sheet,
For example, black (K), cyan (C), magenta
(M), transfer sheet using yellow (Y) colors
Image formation. Droplets on the K-color transfer sheet 5
The droplets of the transferability promoting material are ejected from the ejection head 13 like an image.
To form a latent image on the transfer recording layer of the transfer sheet 5, and then
The transfer sheet and the image receiving sheet are connected to the support drum 3 and the pinch.
Heat and press through the roller 7 to perform the first transfer
The Thereafter, the same hue and the same darkness as the transfer sheet 5
Transfer sheets with different degrees, or the same hue but different densities
The image is transferred again using the transfer sheet. After this,
A small amount of transferability promoting material remaining on the image receiving sheet is shown in FIG.
Or removed by the heating and drying apparatus shown in FIG.
It is preferable that fog does not occur. Less than,
According to the same procedure, each of the C, M, and Y color transfer sheets 5 and
Using the same or different transfer sheet
A transfer recording layer for each color on the image receiving sheet 11.
Transfer and fix sequentially based on image information, and overlay 4 colors
Forming a full color image. Next, the apparatus used in the image forming method of the present invention will be described.
Another aspect will be described. FIG. 2 shows an image according to the present invention.
2 shows a second configuration of an image forming apparatus that performs the forming method.
In this embodiment, the transferability promoting material is discharged on the surface of the image receiving sheet.
Is issued. The image forming apparatus 20 is placed on the surface of the image receiving sheet 11.
A discharge head 21 for applying a droplet-like transferability promoting material;
The transfer sheet 5 and the image receiving sheet 11 are brought into close contact with each other to perform transfer.
Pinch roller provided with support drum 3 for heating and heating means
-7 completes the transfer process with a pair of pressure rollers
In order to peel off the transferred transfer sheet 5 and the image receiving sheet 11
The peeling bar 23 (peel bar). Droplet discharge
The head 21 is movable in the width direction of the image receiving sheet 11.
It is like that. The peeling bar 23 receives the transfer sheet 5.
After pressing the sheet 11 side and passing through the peeling bar 23, the roll
The copying sheet 5 is an angle close to a right angle with respect to the image receiving sheet 11.
It comes to be peeled by. Also, the peeling bar 23 and
The transfer sheet 5 is wound between the winding means 25 and the transfer sheet 5.
5 is wound with a predetermined tension. This
In this embodiment, the ejection head 21 is positioned on the image receiving sheet 11 side.
The liquid droplets are ejected in the direction and the transfer sheet 5 and the image receiving
A peeling bar 23 is provided for stably peeling the sheet 11.
Except for this point, the same configuration and the same as the image forming apparatus 1 are described.
And has a function. In this embodiment, the transferability promoting material is transferred.
Since the ink is discharged not on the recording layer but on the image receiving sheet 11, it is thin.
Even when a transfer recording medium is used, the latent image is
It is possible to suppress the deterioration of the position accuracy, and the peeling bar
23, the support of the transfer sheet 5 is at an angle close to a right angle.
Since it is bent, the peeling between the support and the transfer material
The surface of the image receiving sheet 11 will be promoted by the difference
It is possible to improve the fixing of the transfer recording layer. In the following, the image forming method of the present invention is carried out.
A modification of the image forming apparatus will be described. Image forming apparatus
In 30, as shown in FIG.
The liquid droplet ejection direction is determined by the transfer sheet 5 and the image receiving unit.
It can be in any direction of the sheet 11
In addition, the discharge direction can be switched freely, and the material and transfer conditions
Thus, the discharge direction can be changed as appropriate.
The direction switching structure of the droplet discharge head 31 is a single unit.
Alternatively, the droplet discharge head 31 having a plurality of discharge holes can be
In addition to the movable one (shown in FIG. 3),
Discharge holes are provided in each direction.
One that controls opening and closing of one of the discharge holes is conceivable.
According to this image forming apparatus 30, the transfer sheet 5 to be used
Or based on the suitability of the image receiving sheet 11 and the droplet,
The liquid of the droplet discharge head 31 with respect to the preferred image forming surface
It is possible to form a latent image by switching the droplet ejection direction
Become. In the image forming method of the present invention,
Multiple transfer processes based on image information (latent image formation)
Then, a process of heating and drying the image receiving surface of the image receiving sheet is added.
It is preferable that A latent image is formed by this drying process.
The remaining solution for evaporation is allowed to evaporate,
Latent image formation based on image information (for example, different color information)
If the transfer sheet is overlaid and then transferred, the secondary
A high-quality image without fogging can be produced. Previous
As an image forming apparatus for carrying out the above method, FIG.
And an image forming apparatus provided with the heat drying apparatus of FIG.
It is. The image forming apparatus 40 shown in FIG. 4 is the same as that shown in FIG.
The heating and drying device 27 is further transferred to the image forming apparatus shown.
It is installed downstream from the copying position, and FIG.
In the image forming apparatus 50 shown in FIG.
Added to the image forming apparatus downstream of the peeling bar 23.
A thermal drying device 27 is provided. First transfer process
After that, the drying device 27 is not operated and all the transfer processes are completed.
After completion, the image receiving surface of the image receiving sheet is removed by the drying device 27.
Heat to dry. Although not shown, the transferability promoting material
After applying the material imagewise to the transfer sheet or image receiving sheet
In order not to reduce the resolution before transfer,
Heating and drying the application surface can also be performed as appropriate. Also, as an application of the image forming method of the present invention.
The transfer sheet 5 having a lipophilic resin layer formed on a support is used.
Instead of the image receiving sheet 11, the outer peripheral surface is a plate surface.
Perform image formation using the same procedure using a ram-shaped plate cylinder
The desired fineness can also be obtained on curved surfaces such as the outer peripheral surface of the plate cylinder.
Plate can be formed with few manufacturing processes.
Can be formed. [Image formation on ceramic body] Image of the present invention
Using the image forming method, images on the ceramic body surface, especially
A full color image can be formed. Image of the present invention
In order to utilize the forming method, a desired concentration is applied on the ceramic body.
Images with high resolution and uniform image quality
You can. As image formation on the ceramic body,
(1) Form an image on an image receiving sheet by the image forming method
Retransfer it to another image-receiving sheet, or
Without transferring, for example, underwater, the image receiving sheet support and image
The image receiving layer on which the image is placed is separated and the image receiving layer side is ceramic.
The ceramic body with the image and the image receiving layer in contact with the body
A first method of placing on the surface, (2) water on the paper support
A layer containing a soluble polymer is provided, and this is used as an image receiving sheet.
Further, an image (no image) is formed thereon by the image forming method of the present invention.
Cover coat on top of this image
A water layer is formed and immersed in water to dissolve the water-soluble polymer.
Peel off the cover coat layer along with the image
The water-soluble polymer layer side of the image and cover coat layer
The second one, which is placed in contact with the ceramic material
(3) The image is formed on the image receiving sheet by the image forming method of the present invention.
A third way to form an image and transfer it to a ceramic body
(4) forming an image receiving layer on the ceramic body and
A fourth method of forming an image by the image forming method of the invention;
However, it is not limited to these. Sera
The image formed on the mic body is then sintered. (1) First Method One of the first methods is an image forming method according to the present invention.
Image formed on the image receiving sheet (including inorganic pigment)
Is transferred again to a second image receiving sheet having an image receiving layer.
At least this image receiving layer and the image formed on this
It is a method of placing on the Mick material. In this case,
2. Use a water-permeable support such as paper as the support for the image-receiving sheet 2
A layer made of a water-soluble polymer between the image receiving layer and the support.
It is preferable to use those provided. The shape of this inorganic image
The formed second image-receiving sheet is water-soluble when immersed in water.
The polymer dissolves and the image-receiving layer is easily peeled off from the paper support
Can. In addition, the water-soluble polymer
Adhering the aqueous polymer layer to the ceramic body surface
What can be used is preferable. The water-soluble polymer layer is ceramic
Be sure to use it when peeling, because it is an adhesive between the adhesive and the image receiving layer.
Need not be removed. The laminate of the image receiving layer and the image is
Place the soluble polymer side in contact with the ceramic body surface.
To form an image on the ceramic body. Examples of the water-soluble polymer include:
Used for painting ceramics such as dextrin and gum arabic
Polymers, polyvinyl alcohol, carboxyme
Chill cellulose, methyl cellulose, hydroxyethyl
Cellulose, gelatin and the like are preferred. In addition, the image receiving layer is constructed.
As the resin to be formed, a hydrophobic polymer can be used.
For example, polyvinyl butyral resin, ethylene-vinegar
Acid vinyl copolymer, ethylene-acrylic acid ester copolymer
Polymer, styrene-acrylic acid ester copolymer, styrene
-Maleic acid-acrylic acid ester copolymer, poly
Mido, polystyrene, polyester, polyvinyl acetate tree
Fat, cellulose derivative, polystyrene methacrylic tree
Fat, polyvinyl ether resin, polyurethane resin,
Thermoplastic trees such as polycarbonate resin and rosin resin
Fats are mentioned. Also, on ceramic bodies such as ceramics
Tree used as an overprint lacquer for painting
Fats are also preferably used, for example, acrylic resins, urea
Examples thereof include tan resins. In the above method, the image receiving system
Over the second image receiving sheet, preferably
In addition, an image is formed by the image forming method of the present invention,
The image-receiving layer on which an image is formed in the same manner as described in
Method of placing on the surface of a ceramic body and then sintering it
It is. (2) Second Method The cover coat layer of the second method is applied to the ceramic material of the image.
When removing the support from the image receiving sheet
In addition, it functions to hold an image (inorganic pigment image). this
From the standpoint of retention function, these layers contain a hydrophobic polymer.
Preferably. Hydrophobic polymers include transfer sheets
The polymers listed as binder polymers for the colorant layer
Limers can be used as well. Used for these layers
And the polymer used for the color material layer have the same functional group.
It is preferable to include. Above all, close to uneven surfaces and curved surfaces
Glass transition temperature at room temperature from the viewpoint of enabling adhesion and transfer
(Use environment temperature) The following polymers are preferred. here,
The ambient temperature is below 25 ° C. Furthermore, the above
The glass transition point is preferably −50 to 25 ° C., −
30-15 degreeC is more preferable. Specifically, as a commercial product
Cover coat resin LO- manufactured by Kyodo Chemical Industry Co., Ltd.
210, LO-176S, LO-200H, LO
-170H etc. are mentioned. The cover coat layer used in the second method has no coating.
It may be formed by coating on the machine pigment image.
The cover coat layer formed on the support is transferred by thermal transfer.
It is also possible to copy. Temporary support and cover coat
It is also preferable to provide a release layer between the layers. Further hippopotamus
-Frit on coat layer (hot-melting inorganic material, flack
May be included. To contain frit
In the inorganic pigment image formed in the image forming process described above,
Strong sintering to ceramic materials even when the pigment content is high
Image stability after sintering and surface gloss
Can also be improved. (3) Third Method In the third method, preferably, in the first method.
Using the second image receiving sheet, the image forming method of the present invention is formed on the second image receiving sheet.
An image is formed by the method and transferred to the surface of the ceramic body.
Copy, for example, heat and press to transfer. By this method
Between the image and the surface of the ceramic body.
Since there is no intermediary layer, the subsequent sintering process
Sintering of inorganic pigments and ceramic bodies is more stable
This is preferable. In this case, the image
In order to improve transferability (adhesiveness) to the surface of the pack body,
Water-soluble polymer with adhesion on the surface of ceramic body
Is preferably applied. In addition, the second image receiving sheet
Instead of a water-soluble polymer layer, a paper support or film
A removable polymer such as silicone resin or olefin resin
Polymers with weak adhesion such as polymer layers and polyvinyl alcohol
A layer may be provided. Plus with good releasability as a support
Plastic film with tic film and mold release treatment
Can also be used. In this case, transfer can be performed easily.
The In addition, the image forming method of the present invention allows the image receiving sheet to
Perform image formation and re-transfer this to another image-receiving sheet.
May be transferred again to the surface of the ceramic body. (4) Fourth Method In the fourth method, an image receiving layer is formed on the ceramic body.
An image is formed on the image layer by the image forming method of the present invention.
However, as this image receiving layer, the image receiving described in paragraph 0047 and after
An image receiving layer in the sheet can be applied. After forming an image on the surface of the ceramic body,
A sintering process is performed. In the sintering process, it consists of transfer material
The ceramic body on which the image is formed is heated and used as a transfer material.
The inorganic pigment contained is sintered on the surface of the ceramic body.
Inorganic pigments are sintered on the surface of the ceramic body
In addition to the inorganic pigment in the transfer material, and the image and
Components such as an image receiving layer arranged on the surface of the ceramic body
Is evaporated or incinerated. The ceramic body is heated
From the viewpoint of degree control and color development, for example, using an electric kiln
It is preferable to carry out. Heating conditions are selected material, ceramic
Set appropriately according to the volume of the mix, the size of the image, etc.
can do. Heat up slowly to the firing temperature
Or after heating at a constant temperature from 300 ° C to 500 ° C for a certain time
In addition, it is preferable that the temperature is gradually raised to the firing temperature.
Firing is performed when the upper paint is used as the inorganic pigment.
The degree is usually 650 ° C to 900 ° C, preferably 750 ° C to 8 ° C.
The firing time at this temperature is 1 to 8 hours.
Is preferred. In addition, the lower paint was used as an inorganic pigment.
In the case, the firing temperature is 1000 ° C to 1300 ° C, preferably
Is 1100 ° C to 1250 ° C and firing time is 1 to 8 hours
It is preferable to carry out. In the sintering process, other than the inorganic pigment in the transfer material
Together with the components and images on the surface of the ceramic body.
Components such as the placed image receiving layer are evaporated or incinerated. Follow
The ceramic body together with the inorganic pigment during the sintering step
Material placed on the surface (components in the transfer layer and image receiving
The components in the layer) are caused by evaporation or combustion during the sintering process.
Containing atoms or compounds that do not disappear
Does not contain atoms or compounds that react and change color
Is preferred. Ceramic with a picture by the production method of the present invention
The shape of the ceramic body to be painted
By selecting various shapes and formed images, for example,
Lamix photo use (portrait, funerary remains, pets
Photos, commemorative photos that you want to keep permanently), amusement
And accessories (mugs, liquor bottles
, Family crests, fish farming, etc.), building materials (bathrooms, entrances,
Art tiles used on the walls of living rooms, lobbies, guest rooms, etc.
Board, information board, room accessories, interior products, etc.)
It can be used for various purposes. EXAMPLES The present invention will be specifically described with reference to the following examples.
However, the present invention is not limited to these. Na
In this example, unless otherwise specified,
“Part” indicates “part by mass”, and “%” indicates “% by mass”. Example 1 <Preparation of Transferability Promoting Material Solution 1> Distilled water 45 parts n-propyl alcohol 45 parts polyoxyethylene (4) lauryl ether 10 parts After stirring the above ingredients uniformly, 0.45 μm
Filtration was performed using a filter to obtain a transferability promoting material solution 1. <Preparation of Transfer Sheet> (1) Preparation of Yellow Transfer Sheet (Preparation of Inorganic Pigment Dispersion Liquid Y) Yellow Pigment (manufactured by Celdec; 13651) 100 parts Dispersant 4 parts (manufactured by Shin-Etsu Chemical; Surfynol CT) -324) 60 parts of water The above ingredients are dispersed in an automatic mortar for 3 hours to obtain an inorganic pigment dispersion.
Y was obtained. (Preparation of coating liquid) Pigment dispersion Y 41 parts Polyoxyethylene (n = 10) nonylphenol ether 0.5 part (20% by mass aqueous solution) Carbana wax dispersion (31% by mass) 20 parts (Chukyo Yushi Co., Ltd.) K-332) Butyral resin dispersion (25% by mass) 60 parts (manufactured by Chukyo Yushi Co., Ltd .; Resem J667) Water 100 parts The above components were sufficiently stirred to prepare a coating solution for a transfer layer. The transfer layer coating solution was added to a 5 μm thick poly
Apply to ester film so that dry film thickness is 1.2μm
To form a transfer layer and produce a yellow transfer sheet.
It was. (2) Magenta, cyan and black transfer
Preparation of copying sheet In preparation of the above yellow transfer sheet, yellow pigment
Instead of magenta pigment (Seldec; 7757)
1) Cyan pigment (manufactured by Celdec; 121522)
And black pigment (Seldec; 14209)
Unless otherwise used
Toner transfer sheet, cyan transfer sheet and black transfer
Each sheet was produced. (3) Preparation of image-receiving sheet First layer coating solution and second layer coating solution having the following composition were prepared.
did. [Composition of Coating Solution for First Layer (Cushion Layer)] 160 parts of vinyl chloride-vinyl acetate copolymer (manufactured by Nissin Chemical Co., Ltd .; Solvine CL2) 61 parts of ethylene-vinyl acetate copolymer (Mitsui DuPont Chemical ( Co., Ltd .; Elvalloy 742) Sebacic acid polyester 28 parts (Nihon Soda Co., Ltd .; FN-G25) Perfluoroalkyl group-containing oligomer 4 parts (Dainippon Ink and Chemicals Co., Ltd .; Megafuck F-178K) Methyl ethyl ketone 630 parts Toluene 210 parts Dimethylformamide 30 parts [Composition of coating solution for second layer (image receiving layer)] Polyvinyl butyral resin 16 parts (Denka Butyral # 2000-L) N, N -Dimethylacrylamide-butyl acrylate copolymer 4 parts Goma 0.5 parts (manufactured by Dainippon Ink and Chemicals Incorporated; Megafac F-177) n-propyl alcohol 200 parts [0083] The thickness 130μm PET film support on
The first layer coating solution is applied and dried at 100 ° C.
A first layer having a thickness of 20 μm when dried was formed. Next
The second layer coating solution is applied onto the first layer, and 10
Dry at 0 ° C. and the second layer with a thickness of 2 μm (image receiving)
Layer) to form an image receiving sheet. (4) Production of second image-receiving sheet A sheet of paper on ceramic transfer paper (manufactured by Nitto Paper Industries Co., Ltd., SK-G)
Bar coat resin solution (Reaction Chemical Industry Co., Ltd., LO-2
01) with a coating bar so that the dry thickness is 10 μm
It has a cover coat resin layer (image receiving layer).
A second image receiving sheet was prepared. (5) Manufacture of a ceramic plate with a picture An image is formed on an image receiving sheet using an image forming apparatus as shown in FIG.
Image formation was performed. The transfer head prepared in (1) above is applied to the discharge head.
A solution of photo-enhancement promoting material was filled. Print the image receiving sheet
Set in the image forming device, first, yellow color separation data
The transferability accelerating solution to the surface of the image receiving sheet.
As a result, a yellow latent image was formed. Yellow transfer paper on this surface
Overlay the transfer surface of the sheet and set the nip temperature to 85 ° C.
The transferred yellow image on the image-receiving sheet surface
Formed. After that, a yellow transfer image was formed.
Again, on the sheet, use the same hue as the yellow transfer sheet.
And the transfer sheet of density are stacked, and the temperature of the nip part is 85 ° C.
Passed through the transfer machine set in. This is then 110 ° C.
And dried for 5 minutes. Next, the image receiving sheet is transferred to the image forming apparatus.
In the same way, a magenta latent image is formed and
The magenta image is transferred twice by transferring under the same conditions.
Overlaid. Furthermore, the cyan and black transfer images are superimposed and received.
A full-color transfer image (normal image) was obtained on the image sheet. Image form of image receiving sheet on which image is formed
Cover surface resin layer for forming surface and second image receiving sheet
Superimpose the surfaces and pass between 120 ° C hot rollers
A full color image on the cover coat resin layer
The image was transferred. Next, cover the adhesive image-receiving sheet in the water tank.
Peel from between bar coat resin layer and ceramic transfer paper
It was. Cover coat resin layer with image on ceramic plate
Arranged. Then at 400 ° C for 1 hour and at 850 ° C for 2 hours
Sintered for a long time and sintered the inorganic pigment on the ceramic plate.
Was made. The picture on the ceramic plate has a desired density and
In addition, the resolution was good and no image unevenness was observed. The image forming method of the present invention is as described above.
Therefore, the transfer recording layer contains a color material with a low intrinsic density.
In particular, when using a transfer sheet,
Desired even when using inorganic pigments for Mick baking
The image density may cause degradation of resolution and image unevenness.
You can get without. Also, composite colors can be obtained by a simple method.
Can.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram showing an embodiment of an image forming apparatus for carrying out an image forming method according to the present invention. FIG. 2 is a conceptual diagram showing another aspect of the image forming apparatus for carrying out the image forming method according to the present invention. FIG. 3 is a conceptual diagram showing another aspect of the image forming apparatus for carrying out the image forming method according to the present invention. 4 is a conceptual diagram showing a mode in which a heat drying apparatus is provided in the image forming apparatus of FIG. 5 is a conceptual diagram showing a mode in which a heat drying device is provided in the image forming apparatus of FIG. [Description of Symbols] 1, 20, 30, 40, 50 Image forming apparatus 3 Support drum 5 Transfer sheet 7 Pinch roller 11 Image receiving sheets 13, 21, 31 Droplet discharge head 23 Peeling member (peeling bar) 27 Heating and drying apparatus

Claims (1)

What is claimed is: 1. A transfer capable of lowering a transfer temperature of a transfer recording layer on either a transfer recording layer surface of a transfer sheet having a transfer recording layer on a support or an image receiving surface of the image receiving sheet A portion corresponding to the latent image of the transfer recording layer is formed by applying a property promoting material imagewise to form a latent image, and then heating the transfer recording layer surface of the transfer sheet and the image receiving surface of the image receiving sheet in close contact with each other. To the portion corresponding to the latent image by heating the transfer recording layer surface of the transfer sheet, which is the same as or different from the transfer sheet, to the transfer surface of the image receiving sheet. An image forming method in which retransfer is performed at least once.