JPH022087A - Preparation of recording medium - Google Patents

Abstract

PURPOSE:To prepare a recording medium, wherein an image forming material is homogeneously arranged in a base material as a single layer, in good yield by bringing the base material having a binder layer into contact with the image forming material in a moving state or introducing the same into said image forming material. CONSTITUTION:The binder layer 8 of a binder 3 applied to a base material 2 is flattened and softened on a rotary drum 16 under heating to be brought to such a state that an image forming material 1 becomes easy to bond. When the image forming material 1 is moved in a floating state by the air passed through an air chamber 12 and a porous plate 13 from a pressure tank 10, said material 1 is brought into contact with the binder layer 8 to be bonded thereto in a multilayer state. After this multilayer base material 2 is issued from a binder chamber 15, the image forming material not in contact with the binder layer 8 falls under its own wt. to bring the bonding layer 8 to a single layer. Continuously, the base material 2 is fed between hot press rollers 19a, 19b and heated under pressure to smoothly and uniformly arrange the levitated image forming material 1 to the base material and the prepared recording medium is recovered by a recording medium recovery roll 20.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of manufacturing a recording medium by providing an image forming element on a substrate.

[Background Art] In recent years, with the rapid development of the information industry, various information processing systems have been developed, and recording methods and devices suitable for each information processing system have also been developed and adopted.

As one such recording method, the thermal transfer recording method uses a lightweight, compact device, and is noiseless.
It has excellent operability and maintainability, and has been widely used recently. According to this method, plain paper can be used as the transfer medium.

However, such conventional thermal transfer recording methods are not without drawbacks. This is because the transfer recording performance, or print quality, is greatly affected by the surface smoothness of the transfer medium, and while it is possible to print well on highly smooth transfer media, the print quality is significantly lower on less smooth transfer media. is to decrease.

Regarding paper, which is the most common transfer medium, highly smooth paper is rather special, and ordinary paper has various degrees of unevenness due to entangled fibers. Therefore, in the case of paper with large surface irregularities, the hot-melted ink cannot penetrate into the fibers of the paper and only adheres to the concavities on the surface or the vicinity thereof, resulting in sharp edges of the printed image. The image may be missing, or part of the image may be missing, resulting in a decrease in print quality.

In addition, in conventional thermal transfer recording methods, the ink layer is transferred to the transfer medium using only heat from the thermal head, but the thermal head must be cooled to a predetermined temperature within a limited short period of time. In addition, it is logically difficult to enlarge the heat absorption opening from the heat head because of the need to prevent thermal crosstalk between the heat generating segments that make up the heat head surface. Therefore, it was difficult to record high speeds.

In addition, since thermal conduction has a slower response than electricity or light, it is generally difficult to control the heat pulse to the extent that intermediate colors can be reproduced when recording with conventional thermal heads. Since thermal transfer ink M does not have a gradation transfer function, halftone recording was not possible.

In addition, in the conventional thermal transfer recording method, since only one color image can be obtained by one transfer, it is necessary to repeat transfer a plurality of times in order to obtain a multicolor image. However, it is extremely difficult to accurately superimpose images of different colors, and it is difficult to obtain images without color shift. In particular, when focusing on a single pixel, colors are rarely superimposed on each pixel, and a multicolored image is ultimately formed by a collection of pixels with shifted colors. Therefore, a clear multicolor image could not be obtained.

In addition, when trying to obtain multicolor images using conventional thermal transfer recording methods, it is necessary to install multiple thermal heads or to make complicated movements such as reverse feeding and stopping of the transfer medium, which requires the entire device. It had drawbacks such as being thick (complicated) and slowing down the recording speed.

Further, there is US Pat. No. 4.399.2 [No. 19] which uses a color former and a color developer to form a multicolor visible image.

U.S. Pat. No. 4,399.209 uses a recording medium in which microcapsules containing a photosensitive composition and a coloring agent are arranged on a base material, and the microcapsules are exposed mainly to ultraviolet light converted according to a recorded image. The photosensitive composition in the microcapsules is cured to form a transferred image, which is then passed through a nip between a pair of pressure rollers to overlay the transferred image on a transfer medium having a color developer layer to destroy the microcapsules and A transfer image forming system for developing an image is disclosed. In this invention, a multicolor image is obtained by image-formingly transferring a color former to an image forming sheet and forming an image by the reaction of the color former there.

Further, U.S. Pat.
d) Discloses an imaging system. After exposure of the image-forming sheet to mainly ultraviolet light converted in accordance with the recorded image, the microcapsules rupture and the internal phase is released imagewise when it is passed through a pressure roll. At that time, the color former migrates to a color developer usually provided in M, where it reacts and forms a color image.

In both of the above two recording methods, a photopolymerization initiator is contained in a microcapsule, and the photopolymerization initiator is made to have different photosensitive wavelength ranges. The contents inside the microcapsules are cured using ultraviolet light. However, a common problem with these methods is that the means used to form the image
In both cases, a transferred image is formed on a recording medium by mainly irradiating only ultraviolet light (i.e., optical energy) onto a substrate on which microcapsules are arranged, so in order to obtain a clear recorded image at high speed, It was necessary to use a photosensitive material that is highly sensitive to light, or to irradiate it with high-energy light.

However, high-sensitivity recording media that utilize only photoreactions have the fatal drawback of high sensitivity when irradiated with light and poor storage stability near room temperature. In addition, obtaining high-energy light requires a large device, and obtaining multicolor recording requires a large device, which increases the cost of the device.
Practically undesirable. In addition, since the above method forms an image using only light energy, it can be used when outputting an image in response to an external signal, such as in a printer, or when reading an image from a color original, as in a color copying machine. This is inappropriate when applying image information to a recording medium after converting the image into a digital signal using a color image scanner. That is, when irradiating high-energy light, it is necessary to use short wavelength light, mainly ultraviolet light, and a digitally controllable light source for ultraviolet light is currently not available. For example, methods to obtain a digital light source include liquid crystal shutter arrays and LEDs.
Optical heads such as arrays have been devised, but although these are suitable for miniaturization, liquid crystal molecules deteriorate at wavelengths in the ultraviolet region, making it impossible to stably extract ultraviolet light.

Furthermore, since the color development method uses leuco dye, it has the drawback that the stability of recorded images is essentially poor.

Furthermore, in order to facilitate development by applying pressure after exposure, the contents of the microcapsules must be a photosensitive composition that has a liquid phase at room temperature, resulting in poor storage stability and undesirable properties in practical terms. have

Therefore, the present applicant has already proposed an image recording method that solves the above-mentioned conventional problems, and a recording medium that can be effectively used in the image recording method. In other words, it is capable of forming high-quality transferred images, is capable of high-speed recording and intermediate recording, and does not require complicated movements on the transfer medium even when obtaining multicolor transferred images, and can produce clear, color-shift-free images. The present invention relates to an image forming method capable of producing a multicolor image and a recording medium that can be effectively used therefor.

The transfer characteristics of the photosensitive component contained in the transfer recording layer of this recording medium change upon application of light and heat or energy that can be converted into thermal energy.

In recording using this recording medium, first, the transfer recording layer is
Two types of energy, light energy and heat or thermal energy converted into heat, are applied while at least one of them corresponds to the recorded information, forming parts with different transfer characteristics, and transferring based on the difference in physical properties. This is done by forming an image and transferring the transferred image to a transfer medium by utilizing the difference in physical properties.

These transfer characteristics are arbitrarily determined depending on the type of recording medium to be used. For example, in the case of a recording medium that transfers a transferred image in a thermally molten state, it is the melting temperature, softening temperature, or glass transition temperature. In addition, the viscosity at the same temperature is required for the recording medium to which the transferred image is transferred in an adhesive state or in a permeable state to the transfer medium.

Further, the plurality of types of energy used to form a transferred image are also arbitrarily determined depending on the type of recording medium used, and for example, a photoelectron beam, heat, pressure, etc. are used in an appropriate combination.

FIG. 3 shows an example of such a recording medium, in which an image forming element 1 is bound onto a base material 2 with a binding material 3. The image forming element 1 has a microcapsule shape in which a core material 1a is covered with a wall material 1b. This image forming element l is wall material 1
When core material b is destroyed by energy such as heat or pressure, the core material 1a is ejected and transferred to the transfer medium, forming a recorded image on the transfer medium. In this recording medium, in order for the core material 1a to be sufficiently ejected without being disturbed when the wall material 1b is destroyed, the image forming element l
It is desirable that the image forming elements 1 are not completely covered with the binder 3 and that a portion of each image forming element 1 is exposed by the binder 3. In addition, in order to obtain a recorded image in which transfer is performed evenly, the density is high, and the colors are faithfully reproduced, the image forming element 1 must be adhered uniformly and densely in a single layer on the substrate 2. It is even more desirable that you do so.

When producing this recording medium, the image forming element 1 is usually bonded onto the base material 2 as shown in FIGS. 4(a) and 4(b), for example. That is, a mixture obtained by dispersing a desired amount of the image forming element 1 in an image forming element lamination liquid (usually consisting of a volatile solvent and a binder) 4 is applied onto the base material 2 to a desired thickness. After coating, the image forming element 1 is bonded onto the substrate 2 by volatilizing the volatile solvent in the lamination solution and applying and drying the binder 3 to harden and bond. However, in such a method using a mixed liquid in which the image forming element 1 is dispersed, it is difficult to control the movement of the image forming element 1 in the liquid, and even if the thickness at the time of application of the liquid is strictly controlled, it is difficult to control the movement of the image forming element 1 in the liquid. However, it has not been easy to stack the image forming element 1 uniformly and in a single layer on the substrate 2.

Furthermore, with this method, it is also difficult to expose a part of the surface of the image forming element from the binder 3.

Therefore, the applicant of the present application has developed an image forming element in a uniform and single layer (or f
A method has already been proposed in which a layer (not densely a single layer, but partially multi-layered to the extent that a high-quality image can be formed) is adhered to a substrate (Japanese Patent Application No. 61-224803.61). −
224804.61-224806).

In this method, a recording medium is manufactured as follows.

First, the binding material 3 is applied onto the base material to form a binding material layer. Excess imaging element is then sprinkled over this layer. At this time, the image forming element 1 is arranged in multiple layers on the base material 2, as shown in FIG. 5(a). Then, when those of the image forming elements 1 on the base material 2 that are not in sufficient contact with the binding material 3 are removed, the image forming elements I are left on the base material 2 as shown in FIG. 5(b). -M, and a recording medium is obtained. As a method for arranging the image forming element 1 on the binding material 3,
In addition to the simple sprinkling method, methods have also been proposed in which a base material coated with the binder 3 is conveyed in contact with the image forming element 1 placed in a container in advance. In addition, binding material 3
Among the image forming elements on the base material 2 coated with the binder 3
As a way to remove things that are not in sufficient contact with
The applicant of the present application has proposed methods such as a method of adhering to an adhesion member such as an image forming element, and a method of removing by applying a gas flow (Japanese Patent Application No. 61-224806 and No. 61-224814).

[Problem to be Solved by the Invention 1] An object of the present invention is to manufacture a recording medium in which image forming elements are densely arranged in a homogeneous and substantially single layer on a base material with a high yield by a method different from the above. The object of the present invention is to provide a method that can be manufactured at high speed.

[Means for Solving the Problems] In order to achieve the above object, the present invention is particularly suitable, by binding an image forming element onto a base material with a binding material capable of exhibiting adhesive properties. In a method of manufacturing a recording medium, a substrate having a layer of a binding material is brought into contact with or placed within an imaging element which is in a wholly or partially moving state; After distributing on the substrate,
It is characterized by comprising a step of removing unbound image forming elements. It is particularly preferable that the image forming element in a moving state move while floating in a mist-like state.

In the present invention, since the image forming element is in a moving state, more of the image forming element easily comes into contact with the binding material on the base material, and since the momentum at the time of contact is large, it is easy to sufficiently bind the image forming element. Therefore, compared to the conventional method of sprinkling the image forming element on a layer of a binding material, the image forming element can be arranged more densely on the base material.

In order to move the image-forming element, the image-forming element may be placed in a gas stream and erupted into a container, or it may be typified by a porous plate having appropriate micropores.
The gas flow may be applied to the image-forming element through a crane member that reduces the pressure and rectifies the gas flow, or (2) vibration may be applied to the image-forming element.

The gas flow in (1) and (2) is preferably a gas inert to the image forming element (eg, air, nitrogen). The porous plate in (2) is preferably one that has minute pores that can hold the image forming element when the image forming element is placed on the porous plate, such as urethane foam, polyethylene, etc. Foam, rubber sponge, etc. can be used.

In addition, in order to apply vibration in (2), it is possible to apply vibration to the chamber containing the image forming element by using a piezoelectric element or manually, or by converting the rotation of the motor into linear motion using a cam, crank, etc. and using that motion. A method of vibrating the chamber or a method of vibrating the chamber using fluid pressure such as air pressure or oil pressure may be used.

To remove unbound image forming elements (that is, not in sufficient contact with the binder), there are several methods: dropping them by gravity, blowing gas on the image forming elements, and vibrating the substrate. A method in which the image forming element is attached to an attachment member and then removed can be used.

After removing the image forming element that is not in sufficient contact with the binding material, the image forming element is formed on the base material to which the image forming element has been bound, by passing it through a hot pressure roller or pressure roller, heating it, etc. The layers of the element body can be made to have a more uniform thickness.

The present invention is preferably applied to obtain a recording medium in which image forming elements are densely arranged in a homogeneous single layer on a substrate.

The image forming element, base material, and binding material that can be used in the present invention are not limited in any way as long as they can fulfill the function. The present invention is particularly effective when a microcapsule-shaped image forming element is used, but there is no wall material,
A particulate material obtained by simply clumping together a coloring agent and other materials may also be used.

The particle size distribution of the image forming element 1 is ±5 with respect to the number average particle size.
It is preferably 0% or less, particularly preferably ±20% or less. The thickness of the wall material of the microcapsule is preferably 0.1 to 2.0 μm, particularly preferably 0.1 to 0.5 μm.

The particulate forming element body 1 without the wall material 1b can be obtained by melting and mixing the components by spray drying, emulsion granulation, or the like.

Further, as a method for manufacturing the microcapsule-shaped image forming element 1, any conventionally known method can be applied, such as a simple coacervation method, a complex coacervation method, an interfacial polymerization method, an 1n-situ polymerization method, The interfacial precipitation method, phase separation method, spray drying method, air turbidity coating method, mechanochemical method, etc. are used.

The material contained in the core material 1a of a particulate image forming element or a capsule image forming element may vary depending on the recording method, but US Pat. The materials described in No. 416,966 may be used as is. In addition, as will be explained in detail later, the application of thermal energy and light energy causes the material in the image forming element 1 to react rapidly, making it difficult for the image forming element to be transferred to the transfer medium. In the recording method for forming a recorded image, a sensitive component, a coloring agent, etc. are contained in the image forming element 1 (in the case of a capsule-shaped image forming element, the core material 1a). The sensitive component is
It is hardened by application of thermal energy and light energy, making it difficult for the image forming element 1 to be transferred to a transfer medium.

Materials used for the microcapsule wall material 1b include gelatin, gum arabic, cellulose such as ethyl cellulose and nitrocellulose, urea-formalin, nylon, tetron, polyurethane, polycarbonate, maleic anhydride copolymer, vinyldene chloride, and polycarbonate. Examples include polymers such as vinyl chloride, polyethylene, polystyrene, and polyethylene terephthalate (PET).

As a base material, PET film, polyamide film,
Polyimide film, polyimide film, capacitor paper, etc. can be used, and as the binder, epoxy resin, polyvinyl alcohol, polyvinylpyrrolidone, polyacrylamide, urethane acrylic adhesive, etc. can be used.

As a method for providing the binding material on the base material, for example, a method of spraying the binding material or a gravure printing method can be used.

[Example] Example 1 FIG. 1 is a schematic cross-sectional view showing an example of a recording medium manufacturing apparatus suitable for carrying out the present invention. With this device,
Although a high quality image of the imaging element is formed on the substrate, the apparatus uses a continuous sheet-like substrate so that the steps can be performed by continuous movement of the substrate itself.

In this device, the base material is fed out by a base material roll 5.
From there, it can be transported to an intermediate roll 9 for changing the running direction, a rotating drum 16, and further to a recording medium collection roll 20. A binder application container 6 located between the base material roll 5 and the intermediate roll 9 can hold the binder 3 and continuously apply the binder 3 onto the base material 2 . The blade 7 located immediately after this is used to level the surface of the binding material 3 applied on the base material 2 and make the binding material 3 on the base material 2 a desired thickness. . The rotating drum 16 has a heating heater 17 inside, and below this, a shielding plate 14,
There is a binding chamber 15 for receiving the image element 1, the lower side of which is made of a porous plate 13. The binding chamber 15 has a porous plate 13 at the bottom (manufactured by PE Lite LS-3, Bengami MBC 〇η).
It is connected to the gas chamber 12 via. This gas chamber 12
, the high pressure gas from the pressure tank 10 passes through the pressure regulating valve 11.
It is then supplied after being reduced to an appropriate pressure. Gas chamber 12
The gas supplied to the porous plate 13 is further depressurized and rectified by passing through the porous plate 13. The porous plate 13 also prevents the image forming element 1 from falling into the binding chamber 15.

The shielding plate 14 prevents the image forming element 1 from being scattered outside even if it floats due to the gas flow, and together with the porous plate 13, holds and collects the image forming element 1 that is not used.

Note that a heater 21 is provided between the intermediate roll 9 and the rotating drum 16, and a heater 21 is provided between the intermediate roll 9 and the rotating drum 16.
0, there are an image forming element recovery container 18 and hot pressure rollers 19a and 19b.

The present example was made using the above-mentioned apparatus, but the image forming element used therein was formed into a microcapsule shape and was manufactured in the following manner.

That is, first, 10 g of the ingredients shown in Tables 1 and 2 were mixed with 20 parts by weight of methylene chloride, and then mixed with 200 mJ of water in which 1 g of gelatin and a surfactant such as a cationic or nonionic surfactant having an HLB value of at least 10 were dissolved. Mix and heat to 60℃
8.000~10.00 by homomixer under heating. OO
Stir with Orpm to emulsify and obtain oil droplets with an average particle size of 26 μm.

Stirring was continued at 60° C. for 30 minutes, and methylene chloride was distilled off to give an average particle size of 10 μm. Add 20mA of water in which 1g of gum arabic was dissolved, and add NH40H (ammonia) water while cooling slowly to adjust the pH.
11 or more to obtain a microcapsule slurry, and slowly add glutaraldehyde 20% aqueous solution], Omj to harden the capsule wall.

After that, solid-liquid separation was carried out using a Nutsche filter, and 35
It was dried at ℃ for 10 hours to obtain microcapsule-like particulate bodies.

This image forming element has cores lc and l shown in Tables 1 and 2.
d is a microcapsule coated with shell 1e, and has a particle size of 7 to 15 μm and a number average particle size of 10 gm.

AM of Image Forming Element Tables 1 and 2 The image forming element 1 thus manufactured was placed in the binding chamber 15. As the base material 2, a PET (polyethylene terephthalate) film having a thickness of 6 mm was used. The base material 2 is conveyed from the base material roll 5 in the direction of the arrow in the figure, the binder 3 is applied onto the base material I from the binder coating container 6, and the binder layer is coated using the blade 7. 8 was flattened. As the binder 3, a 5 wt % aqueous solution of PVA (polyvinyl alcohol) with a degree of polymerization of 1400 and a degree of oxidation of 95 mol was used.
Nonionic surfactant: Coconut oil fatty acid jetanolamide was added to the above 5wt% PVA to improve wettability.
It was used by adding 0.15% based on the weight of the aqueous solution.

Furthermore, the binder 3 on the base material was heated and dried using the heater 21 to remove the volatile solvent in the binder 3. After this, the thickness of the binder 3 was When measured, it was approximately 1 μm.Since the glass transition point of the binder 3 used is 15°C, a slight tack remains even at room temperature, and the image forming element formed as described above can be easily assembled. It is possible to bind it onto a substrate.

Subsequently, the base material 2 on which the binding material 3 was laminated was conveyed to the rotating drum 16 heated by the heating heater 17 mainly by its driving force. The surface temperature on the rotating drum 16 is
The temperature was maintained at 100-130°C by heating with a heating heater 17. As a result, the base material 2 on the rotating drum 16 was heated, and the binding layer 8 thereon was further heated and softened, so that the image forming element 1 became easily bound.

On the other hand, the image forming element 1 was moved while being suspended by the gas that had passed from the pressure tank 10 through the gas chamber 12 and the porous plate 13. Air is used as the gas, and the gauge pressure is 0.6 Kg/cm by adjusting the pressure regulating valve.
It was set as 2. The image forming element 1 floating while moving came into contact with the binding layer 8 which was in a state where it was easy to bind, and was bound in a multi-layered manner.

After the base material 2 having such a multilayer is conveyed from the rotating drum 16 and leaves the binding chamber 15, the image forming element l that is not in contact with the binding H8 falls due to gravity and is collected. It was collected in container 18. In this way, the binding layer 8 was made into a single layer.

Subsequently, the base material 2 is placed on hot pressure rollers 19a and 19b (surface temperature 1
By conveying the image forming element at a pressure of 2 kg/cm2), applying pressure and heating, the image forming element is sandwiched between other image forming elements 1 and floated onto the base material 2 as shown in FIG. The body 1 was placed smoothly and uniformly on the substrate as shown in FIG.

The recording medium manufactured as described above was collected by a recording medium collection roll 20.

When this recording medium was observed under a microscope, it was found that the image forming element 1 was densely arranged in a single layer on the base material 2. Further, the upper surface of the image forming element 1 to which the recording paper is bound was not covered with the binding material 3.

Example 2 The apparatus used in this example is shown in a schematic cross-sectional view in FIG. This apparatus is basically the same as the apparatus shown in FIG. 1, but the means for moving the image forming element is different. That is, the means includes, after mixing the image forming element into the gas stream,
By flowing the mixed flow into the binding chamber, the image forming element is made to flow within the binding chamber. Specifically, a pressure tank 10 for supplying a gas flow;
A flow rate adjustment valve 23 that adjusts the gas flow to an appropriate flow rate for injecting the gas flow into the binding chamber 15, an image forming element supply container 21 provided for supplying the image forming element 1, and an image forming element supply container 21 provided for supplying the image forming element 1; It consists of an image forming element mixing section 22 that mixes the element 1 and a gas flow. In the image forming element mixing section 22, the pressure tank 1
By supplying a gas flow from 0, a positive pressure is generated, and the image forming element body 1 is sucked in and mixed with the gas flow. Binding chamber 1
5, the image forming element 1 and the gas flow flow as a mixed flow, and the image forming element 1 is bound to the binding layer.

Using the apparatus shown in FIG. 2, all members other than the above means, setting conditions, and materials used were the same as in Example 1, and the flow rate of the gas flow was adjusted to 1ρ/cm2 by operating the flow rate adjustment valve 23.
The image forming element was moved as .min, and a recording medium was manufactured.

When the manufactured recording medium was observed under a microscope, it was found that the image forming element 1 was evenly and densely arranged on the binder 3, and the upper surface of the image forming element 1 was not covered with the binder. It wasn't covered.

Example 3 The apparatus used in this example is shown in a schematic cross-sectional view in FIG. This apparatus is basically the same as the apparatus shown in FIG. 1, but the means for moving the image forming element is different. That is, the means can adopt a method of moving the image forming element by vibrating a binding chamber containing the image forming element using a piezoelectric element. in particular,
It consists of a binding chamber 15, a piezoelectric element 25 supported by a support stand 24 for vibrating the binding chamber 15, and a piezoelectric element drive circuit 26 for driving the piezoelectric element 25. The binding chamber 15 containing the image forming element 1 is vibrated by the piezoelectric element 25, and the image forming element 1 moves within the binding chamber 15 due to the vibration. As a result, the image forming element 1 has a binding layer 8 on the rotating drum 16.
It is bound onto the base material 2 having the following properties.

Using the apparatus shown in FIG. 8, the members other than the above-mentioned means, their setting conditions, and the materials used are all the same as in Example 1, and the binding chamber 15 is vibrated vertically at a frequency of 40 Hz by a piezoelectric element 25.
A recording medium was manufactured by moving the image forming element by vibrating it.

When the manufactured recording medium was observed under a microscope, it was found that the image forming elements were evenly and densely arranged on the binder, and the upper surface of the image forming element was not covered with the binder. There wasn't.

[Effects of the Invention] According to the present invention described above, a recording medium in which the image forming element is always arranged uniformly and substantially in a single M in the base material can be manufactured with a high yield.

Moreover, this can be done at high speed with a simple device.

[Brief explanation of the drawing]

1, 2, and 8 each show an embodiment of the present invention, FIG. 3 is a schematic cross-sectional view of an example of a recording medium, and FIG. 4 shows an example of manufacturing a conventional recording medium. FIG. 5 is a schematic cross-sectional view of a recording medium during and after the process, and FIGS. 6 and 7 are schematic cross-sectional views showing the state of a recording medium manufactured according to the present invention. 1: Image forming element 2: Base material 3: Binding layer 15: Binding chamber 16: Rotating drum 18: Image forming element collection container

Claims (1)

[Claims] 1) In a method for manufacturing a recording medium by binding an image forming element onto a substrate with a binding material capable of exhibiting adhesive properties, the substrate having a layer of the binding material is entirely or contacting an image forming element that is partially in a moving state, or
or a method for producing a recording medium, which comprises the step of distributing the image forming element onto the substrate and then removing the unbound image forming element.