JP2007001310A - Method for removing remaining ink on image recording body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for removing remaining ink of an image recording body for forming a latent image by optical (or thermal) writing. <P>SOLUTION: The method for removing the remaining ink is the one for removing the ink remaining on the recording body 10 having thermosensitive wettability changing function. A liquid showing compatibility in a resin and a pigment, which are contained in a recording ink, is applied to the recording body. Then, the applied liquid is wiped off. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for removing residual ink on an image recording body for forming a latent image by light (or heat) writing.

  FIG. 1 is a main part configuration diagram for explaining an example of an image forming apparatus to which the present invention is applied. In the figure, 1 is a heating source (preferably a light source having a wavelength of about 300 nm to 1300 nm). Any of an LED array, a semiconductor laser, a solid laser, and the like may be used. 2 is a recording roller, 3 is an inking unit, 4 is an intermediate transfer roller, 5 is recording paper, 6 is a pressure roller, 7 is an infrared heater, 8 is a cleaning unit, 9 is a liquid layer forming roller, and 10 is an image recording The recording body 10 has a receding contact angle that decreases when the recording layer 10 is brought into contact with the recording layer in a heated state (lyophilic state), and receding contact angle when heated in a non-contact state with the liquid. It is a recording material having surface characteristics that increase (liquid repellency).

  When processing the surface of the recording medium 10 to be lyophilic, a liquid layer is formed before heating the surface of the recording medium 10, or the liquid is brought into contact with the surface of the recording medium during heating or immediately after heating. The liquid is brought into contact with the surface of the recording medium. The liquid layer may be formed by forming a liquid layer on the recording medium 10 using a liquid layer forming roller 9 as shown in FIG. The liquid layer forming roller 9 is not always necessary. For example, the recording body 10 may be removed from the recording body roller 2 or may be immersed in the liquid layer together with the recording body roller, or recording may be performed using the cleaning unit 8. A liquid layer may be formed on the surface of the body 10.

  After making the surface of the recording body 10 lyophilic as described above, image writing is performed. This image writing is performed by separating the inking unit 3, the intermediate transfer roller 4, the cleaning unit 8 and the like from the recording body 10. In the state, the heating source 1 is scanned to write an image. As a scanning method, a method of writing while moving the heating unit 1 in the main scanning direction with a linear motor or the like while rotating the recording roller 2, or raster scanning with a polygon mirror or a galvanometer mirror can be applied.

  Next, an image is formed on the recording body 10. During this image formation, the recording paper 5 is fed with the intermediate transfer roller 4 and the inking unit 3 pressed against the recording body 10. As the inking unit 3, a plurality of inking rollers whose ink layer thickness is controlled by a blade 3b or the like are used. Ink supply is performed by dropping the ink from the ink supply tank 3a from above the blade 3b.

  After printing the desired number of sheets, another image is newly formed on the recording medium 10 and the recording medium 10 is reused. At that time, that is, after the completion of printing, the intermediate transfer roller 4 and the inking roller 3 are connected to the recording medium. 10, the cleaning unit 8 is pressed against the recording medium 10 to remove ink remaining on the recording medium 10. After removing the ink on the recording body 10 and forming a liquid layer on the surface of the recording body, the recording body 10 is heated by the infrared heater 7 to erase the latent image of the previous image and Liquid treatment. However, in addition to the method described above, the lyophilic treatment method for the surface of the recording body 10 may be performed by heating in a state where the liquid is in contact with the recording body surface, or immediately after heating the recording body surface. You may make a liquid contact. In other words, the recording body 10 performs printing on a predetermined number of recording papers 5 as described above, then removes ink remaining on the recording body 10, and removes the ink on the recording body 10. A new image (latent image) is formed on the recording medium 10 by erasing the latent image (liquid repellent area) formed on the recording medium 10 and lyophilic processing the surface of the recording medium 10. Is possible. That is, when the ink remaining on the recording body 10 is removed by the cleaning unit 8, a liquid layer is formed on the surface of the recording body by the liquid layer forming roller 9, and the surface of the recording body 10 is heated by the infrared heater 7. The recording medium 10 is subjected to the lyophilic treatment and can be used again. As the cleaning unit 8, the cleaning liquid is infiltrated into the waste 8b from the cleaning liquid supply tank 8a, and the waste 8b infiltrated with the cleaning liquid is pressed against the recording body 10 to clean the surface of the recording body 10.

  Image writing includes negative writing and positive writing. In the negative writing, the recording body 10 is heated while being in contact with a member selected from a liquid and / or a solid, or the recording body 10 is written. Immediately after the surface of the recording medium is heated, the contact member is subjected to lyophilic treatment by bringing it into contact with a member selected from liquid and / or solid to reduce the receding contact angle of the image area on the surface of the recording body. By selectively heating only the non-image area of the recording body in the absence of the liquid, the receding contact angle of the non-image area is increased to perform the liquid repellent treatment. On the other hand, in the positive writing, only the image area is selectively heated while the recording body 10 is in contact with a member selected from liquid and / or solid, or the surface of the recording body is selectively selected. Immediately after heating, the image area is subjected to lyophilic processing by selectively contacting with a member selected from liquid and / or solid.

  As described above, the image forming apparatus to which the present invention is applied performs a lyophilic process according to the image information on the recording body 10, and attaches ink to the portion subjected to the lyophilic process, and this recording is performed. Ink adhering to the body 10 is transferred and printed on the recording paper 5 via the intermediate transfer roller 4 or directly.

The recording body 10 performs printing on a predetermined number of recording papers 5 as described above, and then erases the latent image (lyophilic area) formed on the recording body 10, and the recording body By removing the ink remaining on the recording medium 10, a new image (latent image) can be formed on the recording medium 10 and used again. That is, the ink remaining on the recording medium 10 is removed by the cleaning unit 8 or other means, and then the recording medium 10 is heated by the infrared heater 7 in the absence of the liquid. The liquid-repellent treatment is applied and it can be reused.
Japanese Patent Laid-Open No. 3-178478 JP-A-8-276663

  Patent Document 1 describes a recording method using a heat-sensitive wettability changing material, and Patent Document 2 describes a recording method by negative writing. However, the invention described in Patent Document 1 is mainly recorded by a thermal head, and there is a possibility that the recording layer is mechanically broken due to recording by contact between the thermal head and the recording body. Further, in the negative writing method described in Patent Document 2, since the light source continuously oscillates, it cannot be said that the light-to-heat conversion efficiency is high, and writing takes time, and an expensive apparatus is required as a laser light source. There are some problems.

  In addition, the negative writing method described in Patent Document 2 has a drawback that the lifetime is shorter than that of positive writing because the light source continuously oscillates.

  Further, when the recording medium includes a photothermal conversion layer, for example, when writing using laser light, light incident from the surface of the recording layer 11 passes through the recording layer 11 and the photothermal conversion layer 12 on the surface of the substrate 13. When reflected, the specular reflection component is strong and reaches the boundary surface between the photothermal conversion layer 12 and the recording layer 11 or the surface of the recording layer 11, and this is reflected at each boundary surface, surface, etc., so that the inside of each layer is reflected. In this case, there are problems that multiple reflection occurs and the exposed area is thickened and recording unevenness such as moire occurs.

  Further, in order to reuse a recording medium that has been used once, unless the ink remaining on the recording medium after the previous use is removed cleanly, the recording paper becomes dirty with the residual ink, and clean printing cannot be performed.

  Further, when a plurality of heating sources for the recording medium are provided (multi-head) and the negative writing is performed by these, if any one of the heating sources is damaged, an unheated non-image area is generated, and a streak-like background stain is generated.

  Furthermore, when recording by negative writing, if there is a variation in heating and heat storage of the recording medium and / or image forming means at the time of negative writing, the image is reduced due to the variation in heating and heat storage.

  Furthermore, when writing is performed via a rotating polygonal mirror, if the sensitivity of the recording medium is low, the rotating polygonal mirror must be rotated at a low speed. The speed becomes unstable, which becomes unevenness of photothermal conversion, and appears as unevenness of image density, unevenness of dots and lines.

  The invention of claim 1 is a residual ink removing method for removing ink remaining on a recording medium having a heat-sensitive wettability changing function, wherein the residual ink removing method includes a recording ink on the recording medium. A liquid that is compatible with the resin and pigment contained therein is applied, and then the applied liquid is wiped off.

  The invention according to claim 2 is a residual ink removing method for removing ink remaining on a recording medium having a heat-sensitive wettability changing function, the residual ink removing method comprising: A non-volatile or volatile solvent contained therein is applied, and then the applied liquid is wiped off.

  According to a third aspect of the present invention, there is provided a residual ink removing method for removing ink remaining on a recording medium having a heat-sensitive wettability change function, wherein the residual ink removing method includes a recording ink in the recording ink. A liquid that is compatible with the resin and pigment contained in the ink is applied, and then the recording body is subjected to ultrasonic cleaning.

  According to a fourth aspect of the present invention, there is provided a residual ink removing method for removing ink remaining on a recording medium having a heat-sensitive wettability changing function, wherein the residual ink removing method is applied to the recording medium. The recording medium is coated with a non-volatile solvent, followed by ultrasonic cleaning of the recording medium.

  The invention according to claim 5 is characterized in that the surface of the recording body is washed after the residual ink on the recording body is removed by the method according to any one of claims 1 to 4.

  The invention of claim 6 is an ink removing method for removing ink remaining on the surface of a recording medium having a thermal wettability changing function, wherein an adhesive member is brought into contact with the surface of the developed recording medium, By removing the adhesive member from the surface of the recording medium, the residual ink on the surface of the recording body is removed together with the adhesive member.

  The invention according to claim 7 is an ink removing method for removing ink remaining on the surface of the recording medium having a heat-sensitive wettability changing function, wherein the surface of the developed recording medium has a surface roughness greater than or equal to the roughness of the recording medium. A member having a roughness of 1 mm is brought into contact, and then the residual ink on the surface of the recording body is removed together with the member by peeling the member from the surface of the recording body.

  The invention of claim 8 is an ink removing method for removing ink remaining on the surface of a recording medium having a heat-sensitive wettability changing function, wherein a solid film is formed on the surface of a developed recording medium, By removing the film from the surface of the recording medium, residual ink on the surface of the recording body is removed together with the film.

  The invention of claim 9 is an ink removal method for removing ink remaining on the surface of a recording medium having a heat-sensitive wettability change function, wherein the ink remaining on the surface of the recording body is completely cured by natural drying. Thereafter, the residual ink on the image recording body is removed by the method according to any one of claims 6 to 8.

  The invention according to claim 10 is an ink removing method for removing ink remaining on the surface of a recording medium having a heat-sensitive wettability changing function, and forcibly completely curing the ink remaining on the surface of the recording body. Thereafter, the residual ink on the recording medium is removed by the method according to any one of claims 6 to 8.

  According to the present invention, it is difficult for ink to remain on the surface of the recording medium. Therefore, the surface of the recording medium can be easily cleaned, and the recording medium can be reused more effectively.

  In addition, the ink remaining on the surface of the developed (printed) recording medium can be effectively removed, so that the subsequent cleaning of the recording medium surface is facilitated, and the reuse of the recording medium is more effective. Can be done automatically.

  In addition, the ink remaining on the surface of the developed (printed) recording medium can be effectively removed, so that the subsequent cleaning of the recording medium surface is facilitated, and the reuse of the recording medium is more effective. Can be done automatically.

  FIG. 2 is a cross-sectional configuration diagram of a main part of the recording body 10, and the surface of the recording body 10 exhibits absorption with respect to light (electromagnetic wave) wavelength by forming a liquid layer on the surface. 2A shows an example in which the light (electromagnetic wave) absorbing member on the substrate 11 of the recording body 10 is formed by the recording layer 12 itself, and FIG. 2B shows the light (electromagnetic wave) absorbing member in the recording layer. FIG. 2C shows an example in which the light (electromagnetic wave) absorbing member 15 is provided between the recording layer 14 and the substrate 11. Specific examples of the light (electromagnetic wave) absorbing member contained in the recording layer are as shown in Tables 1 and 2. The light absorbing member may be either a pigment or a dye.

  As the light (electromagnetic wave) generation source 1, a solid laser such as YAG, a semiconductor laser, or an LED array is suitable. As a method for scanning light (electromagnetic waves) on the recording surface, raster scanning using a polygon mirror or galvanometer mirror, or a method of scanning while rotating the recording medium is appropriate. The shorter the wavelength of light (electromagnetic wave), the smaller the irradiation spot diameter and the higher the resolution.

(Experimental example)
Thermosensitive wettability changing functional material: Fluorine-containing acrylate polymer Substrate: Polyester film Light (electromagnetic wave) absorbing material: Cyanine dye Layer structure: 1 wt% to 10 wt% of cyanine dye in the recording layer Light (electromagnetic wave) source: Wavelength 800 nm semiconductor laser Result: Image recording was possible with an irradiation energy of 1/10 that of the prior art.

  FIG. 3 is a diagram showing a configuration example when the recording medium 10 itself shown in FIG. 1 is provided with light (electromagnetic wave) absorption capability. In FIG. 3, A part is a part having a thermal wettability changing function, and B part is As shown in the figure, a monomer having a change in wettability function (a monomer having a change in wettability function is disclosed in, for example, a patent). The monomer described in Document 1 can be mentioned) and a copolymer material of a monomer having a skeleton structure of a dye in a side chain called a so-called polymer dye is desirable.

  FIG. 4 is a diagram showing an example of the aforementioned polymer dye. Basically, as shown in FIG. 4 (A), a vinyl monomer is basically used, and a monomer having a dye in the side chain as shown in FIG. Specifically, it has a structure as shown in FIGS. 4B, 4C, and 4D.

(Experimental example)
Heat sensitive wettability changing functional material: copolymer of fluorine-containing acrylate monomer (part A)
Substrate: Polyimide film Light (electromagnetic wave) absorbing material: Monomer (part B) with pendant phthalocyanine moiety
Layer structure: Copolymer of fluorine-containing acrylate monomer and the above monomer Light (electromagnetic wave) source: Semiconductor laser having a wavelength of 780 nm Result: Image writing was possible with an irradiation energy of 1/20 that of the conventional case.

  Also, a recording layer containing a material having a wettability changing function is incorporated in a state where a dye or pigment that absorbs light (electromagnetic waves) is dissolved and dispersed, and the recording layer material and the absorbing material are separated. By mixing in the recording layer, each material selectivity can be enhanced. In this case, the pigment concentration is desirably 10 wt% to 30 wt%, and in the case of a dye, 1 wt% to 10 wt% is desirable.

(Experimental example)
Heat-sensitive wettability changing functional material: Fluorine-containing acrylate polymer Substrate: Polyester film Light (electromagnetic wave) absorbing material: Cyanine pigment (particle 0.1 μm)
Layer configuration: 10 wt% to 50 wt% dispersion of absorbent in the recording layer Light (electromagnetic wave) source: Image writing was possible with 1/8 irradiation energy as compared with the prior art.

  Furthermore, the optical path length in the recording layer is increased by providing a layer that reflects light (electromagnetic waves) between the recording layer containing the wettability changing material and the substrate and applying multiple reflection. The heat conversion efficiency can be increased.

  In FIG. 5, by providing the reflection layer 16 as described above, the light (electromagnetic wave) L is multiply scattered in the recording layer 17 and the optical path length is increased, so that the light-heat conversion efficiency can be increased. In the main part configuration diagram showing an example, the reflective layer 16 includes a method of depositing a metal such as aluminum on the surface of the substrate 11 and a method of applying or depositing a white oxide such as titanium oxide or aluminum oxide. desirable. Further, a primer layer may be provided on the surface of the reflective layer 16 so that the adhesiveness to the recording layer 17 is not deteriorated by providing the reflective layer 16.

(Experimental example)
Thermosensitive wettability changing functional material: Fluorine-containing acrylate polymer Substrate: Polyester film Light (electromagnetic wave) absorbing material: Cyanine dye Layer structure: 1 wt% to 10 wt% of cyanine dye in the recording layer Light (electromagnetic wave) source: Wavelength 800 nm semiconductor laser Reflective layer: Layer obtained by depositing 1000 mm of aluminum on the substrate Result: Image recording was possible with 1/20 of the irradiation energy.

  FIG. 6 shows an example in which the surface of the reflective layer 16 on the side in contact with the recording layer 17 in the embodiment shown in FIG. 5 is formed on the rough surface 16A to scatter light and improve the uniformity. . The surface roughness of the reflective layer 16 is preferably Rz = 0.1 μm to 10 μm.

(Experimental example)
Thermosensitive wettability changing functional material: Fluorine-containing acrylate polymer Substrate: Polyester film Light (electromagnetic wave) absorbing material: Cyanine dye Layer structure: 1 wt% to 10 wt% of cyanine dye in the recording layer Light (electromagnetic wave) source: Wavelength 800 nm semiconductor laser Reflective layer: A layer in which 1000 mm of aluminum is deposited on a rough surface substrate with Rz = 0.1 μm. Result: Image recording can be performed with an irradiation energy of 1/20 compared to the conventional case.

  In the negative writing method described in Patent Document 2, the light source continuously oscillates, so that there is a drawback that the lifetime is shorter than that of positive writing. Therefore, write positive writing in optical writing, extending the life of the writing light source, making liquid layer retention and liquid supply compatible, ensuring liquid supply and storage stability, facilitating high-speed writing, etc. It is necessary to plan.

  As shown in FIG. 7, the recording body 10 includes a substrate 11 and a recording layer 12, and a liquid layer W is formed on the recording layer 12 by liquid layer forming means 9. When the recording medium 10 is brought into contact with a liquid in a heated state, the receding contact angle decreases (lyophilic state), and when the recording material 10 is heated in a non-contact state with the liquid, the receding contact angle increases (liquid repellent state). A recording medium having surface characteristics, which is selectively heated in contact with a member selected from only an image area, liquid, and / or solid, or liquid immediately after heating the surface of the recording medium, And / or by selectively contacting with a member selected from solids, a latent image is formed on the recording medium, and the latent image is visualized by using the inking unit 3, via the transfer roller 4. Alternatively, it is recorded directly on the recording paper 5. As the heating means 1, a light (electromagnetic wave) generator is used and heated without contact.

  As a method for forming the liquid layer W on the recording body 10, it is preferable to use a method such as applying a liquid or attaching a film containing the liquid. As the liquid used for the liquid layer W, a liquid having a surface energy close to the surface energy of the recording medium 10, an ink solvent (having the advantage of eliminating the liquid layer after writing), a water-soluble resin (polyvinyl alcohol, polyvinylpyrrolidone, etc.) And a liquid that does not repel on the recording medium 10 such as a high-viscosity liquid such as water.

  The formation timing of the liquid layer W and the irradiation of the light (electromagnetic wave) L are preliminarily formed by irradiating the light (electromagnetic wave) L with the liquid layer W formed on the surface of the recording medium 10 in advance. The liquid layer W may be formed while there is residual heat, the formation of the liquid layer W and the irradiation of light (electromagnetic wave) L may be performed at the same time.

(Experimental example)
Substrate: polyester film heat-sensitive wettability change functional material: fluorine-containing acrylate polymer light (electromagnetic wave) absorbing material: cyanine dye layer constitution: light (electromagnetic wave) containing 1 to 10 wt% of cyanine dye in the recording layer Source: wavelength 800 nm Semiconductor laser liquid layer supply means: impregnating a porous elastic roller with a non-volatile solvent of ink,
Coating result on the surface: It was confirmed that high speed image writing was possible by positive writing.

  FIG. 8 is a configuration diagram of a main part for explaining another example of the recording body. In this example, a gel layer 18 is formed on the surface of the recording layer 12 of the recording body 10, and light ( (Electromagnetic wave) L is applied to perform writing. Specifically, utilizing the sol-gel transition phenomenon of the gel-like part, once the gel-like part is solled and fluidized, it is coated on the recording body 10 and re-gelled on the surface of the recording body 10. Then, writing is performed.

(Experimental example)
Substrate: polyester film heat-sensitive wettability changeable functional material: fluorine-containing acrylate polymer light (electromagnetic wave) absorbing material: cyanine dye layer constitution: 1 to 10 wt% of cyanine dye in the recording layer Light (electromagnetic wave) source: wavelength 800 nm semiconductor laser liquid layer supply means: contact with gel such as gelatin and removal after heating Result: The liquid layer can be easily held.

  FIG. 9 is a main part configuration diagram for explaining an example of another recording body, in which 19 is a microcapsule layer, and in this example, a microcapsule enclosing a liquid as a heat-sensitive wettability changing functional material. 19 is used to break the capsule with heat energy at the time of light (electromagnetic wave) irradiation, and form a liquid layer on the surface of the recording medium 10. In this case, it is desirable to contain a light (electromagnetic wave) absorbing agent on the surface or inside of the microcapsule.

(Experimental example)
Substrate: Polyester film Thermal wettability change Functional material: Fluorine-containing acrylate polymer Light (electromagnetic wave) absorbing material: Cyanine pigment (particle 0.1 μm)
Layer structure: 10 to 50 wt% absorbent in recording layer Dispersed light (electromagnetic wave) source: Semiconductor laser liquid layer supply means with wavelength of 800 nm Means of polyethylene microcapsule containing non-volatile solvent of ink
Particle results: The liquid supply and liquid storage stability could be secured.

  FIG. 10 is a configuration diagram of another main part of the image forming apparatus, in which 1 is a light (electromagnetic wave) generator, 2 is a rotating drum, 21 is a film, 22 is a liquid supply means, and 23 is a film cutter. In the embodiment, as shown in the drawing, the film 21 is wound around the rotary drum 2 while the liquid is supplied onto the film 21 by the liquid supply means 22, and a liquid layer is formed on the recording body 10 on the rotary drum 2. Is. A film 21 having light (electromagnetic wave) permeability is used for the film 21. By sandwiching the liquid with a film, a uniform thin layer of liquid phase can be formed, heating unevenness is less likely to occur, and image formation without unevenness is possible.

(Experimental example)
Substrate: polyester film heat-sensitive wettability change functional material: fluorine-containing acrylate polymer light (electromagnetic wave) absorbing material: cyanine dye layer constitution: light (electromagnetic wave) containing 1 to 10 wt% of cyanine dye in the recording layer Source: wavelength 800 nm Semiconductor laser liquid layer supply means: polyester film while supplying non-volatile solvent for ink during recording
Result of wrapping the recording medium with the film: High-speed writing was possible, and furthermore, image formation with less unevenness was possible.

  However, as shown in FIG. 11A, in the recording body 30 including the recording layer 31, the photothermal conversion layer 32, and the base 33 (in the following description, the recording body 30 does not necessarily include a light absorbing material. For example, when writing is performed using a laser beam as a heating source, when light incident from the surface of the recording layer 31 passes through the recording layer 31 and the photothermal conversion layer 32 and is reflected by the surface of the substrate 33. The specular reflection component is strong and reaches the boundary surface between the photothermal conversion layer 32 and the recording layer 31 or the surface of the recording layer 31, and is reflected at each boundary surface, surface, etc., so that multiple reflections occur inside each layer. As a result, there is a problem that the exposed area is thickened and a recording unevenness such as moire occurs. When the exposed area becomes thick, the image portion becomes thicker if the image portion exposure method (positive writing method), and the image portion becomes thinner if the non-image portion exposure method (negative writing method). Further, since the cost increases when the layer structure is increased, there is a problem that it is desired to produce the product inexpensively while avoiding the layer structure as much as possible.

  Further, in the recording body 30 composed of the recording layer 34 and the base 33 in which the photothermal conversion material shown in FIG. 12A is dispersed, the surface of the recording layer 34 is used when writing using, for example, laser light as a heating source. When the light incident on the recording layer 34 passes through the recording layer 34 and is reflected by the surface of the substrate 33, the specular reflection component is strong and reaches the surface of the recording layer 34, which is reflected by the surface of the recording layer 34. There are problems that multiple reflection occurs inside the recording layer 34 and the exposed area is thickened, and recording unevenness such as moire occurs. When the exposed area is thick, the image portion is thickened in the case of the image portion exposure method, and the image portion is thinned in the case of the non-image portion exposure method. Further, since the cost increases when the layer structure is increased, there is a problem that it is desired to produce the product inexpensively while avoiding the layer structure as much as possible.

  Further, in a recording body having a layer configuration other than the above, for example, a recording body comprising a recording layer, a photothermal conversion layer, and a transparent substrate, light incident from the surface of the recording layer passes through the recording layer, the photothermal conversion layer, and the transparent substrate. The specular reflection component is strong when passing through and reflected from the back surface of the substrate, and reaches the boundary surface between the transparent substrate and the photothermal conversion layer, the boundary surface between the photothermal conversion layer and the recording layer, or the recording layer surface. By reflecting on the boundary surface, the surface, etc., multiple reflections are caused inside each layer, and the problem that the exposed area becomes thick as mentioned above, the problem of recording unevenness such as moire, etc. There was also a problem.

  In addition, in a recording body comprising a recording layer in which a photothermal conversion material is dispersed and a transparent substrate, the light incident from the surface of the recording layer passes through the recording layer and the transparent substrate and is reflected by the back surface of the substrate. The component is strong and reaches the boundary surface between the transparent substrate and the recording layer or the surface of the recording layer, and this is reflected at the boundary surface, the surface, etc., thereby causing multiple reflections within the layer. There is a problem that the area is thickened, a problem that recording unevenness such as moire occurs, and a problem that it is desired to produce the product as cheaply as possible.

  Further, when a recording medium comprising a recording layer, a light-to-heat conversion layer, and a transparent substrate is supported on a recording medium support (for example, the recording medium roller 2 shown in FIG. 1), the recording medium is incident from the surface of the recording layer. When the reflected light passes through the recording layer, the photothermal conversion layer, and the transparent substrate and is reflected by the surface of the recording medium support, the specular reflection component is strong, and the boundary surface between the transparent substrate and the photothermal conversion layer, the photothermal conversion layer And reaches the boundary surface of the recording layer or the surface of the recording layer, and this is reflected at each boundary surface, the surface, etc., thereby causing multiple reflections inside each layer, and the problem is that the exposed area becomes fat or moire There was a problem that uneven recording occurred.

  Similarly, in a recording body composed of a recording layer in which a photothermal conversion material is dispersed and a transparent substrate, light incident from the surface of the recording layer passes through the recording layer and the transparent substrate and is reflected by the surface of the recording medium carrier. The reflection component is strong and reaches the boundary surface of the transparent substrate and the light-to-heat conversion layer or the surface of the recording layer, and this is reflected at each boundary surface, surface, etc., so that multiple reflections occur inside the layer. As a result, there is a problem that the exposed area is thickened and a recording unevenness such as moire occurs.

  In the following description, a recording body as described above, that is, a recording body comprising a recording layer, a photothermal conversion layer and a substrate, a recording layer comprising a recording layer in which a photothermal conversion material is dispersed and a base, a recording layer, a photothermal conversion layer, and a transparent A recording body comprising a substrate, a recording layer in which a light-to-heat conversion material is dispersed and a recording body comprising a transparent substrate, a recording layer carried on the recording material carrier, a recording body comprising a light-heat conversion layer and a transparent substrate, and a recording body By using a recording layer composed of a recording layer in which a photothermal conversion material carried on a carrier and a transparent substrate are dispersed, diffusion of an exposed area is reduced, and the image portion is appropriately thickened and thinned.

  FIG. 11A is a cross-sectional view for explaining an example of a recording body, and shows a recording body 30 including a recording layer 31, a photothermal conversion layer 32, and a base 33. Such a recording layer 31 and a photothermal conversion layer are shown in FIG. As described above, in the recording body 30 including the recording layer 32 and the substrate 33, the light incident from the surface of the recording layer 31 passes through the recording layer 31 and the photothermal conversion layer 32 and is reflected by the surface of the substrate 33. The reflection component is strong and reaches the boundary surface of the light-to-heat conversion layer 32 and the recording layer 31 or the surface of the recording layer 31, and this is reflected at each boundary surface, the surface, etc., thereby causing multiple reflections inside each layer, There are problems that the exposed area is thickened and recording unevenness such as moire occurs.

FIG. 11B is a cross-sectional view showing an example of the recording body 30 in which a layer 15 for preventing regular reflection of incident light used for recording is provided between the base 33 of the recording body 30 and the photothermal conversion layer 32. Thus, as the layer 35 for preventing regular reflection, for example, a light diffusion layer in which powder (TiO ₂ , MgO) is dispersed in a binder is used. As a result, the specular reflection component when incident light is reflected on the surface of the substrate 13 is weakened, and multiple reflections are less likely to occur inside each layer, and the problem of the exposed area becoming thicker and recording unevenness such as moire. The problem of generating was reduced.

  FIG. 11C is a cross-sectional view for explaining another example of the recording medium, in which 33a is a fine unevenness provided on the surface of the substrate 33 on the photothermal conversion layer 32 side, and the unevenness 33a In this configuration, regular reflection of incident light used for recording is prevented. Thus, according to the configuration shown in FIG. 11 (B), the cost may increase due to an increase in the layer configuration. In this way, fine irregularities 33a are formed on the surface of the substrate 33 on the photothermal conversion layer 32 side. If provided, the specular reflection component when incident light is reflected on the surface of the substrate 33 is weakened, and multiple reflections are less likely to occur inside each layer, and the exposed area becomes thicker and recording irregularities such as moire. Can be produced at low cost because the layer structure is not increased. In addition, it was set as the roughness of about 0.1-1.0 micrometer as fine unevenness | corrugation.

  FIG. 12A is a cross-sectional view for explaining an example of a recording body. In the figure, 34 is a recording layer in which a photothermal conversion material is dispersed, 33 is a base, and such a photothermal conversion material is dispersed. In the recording medium 30 including the recording layer 34 and the base 33, the specular reflection component is strong when light incident from the surface of the recording layer 34 passes through the recording layer 34 and is reflected by the surface of the base 33 as described above. As a result, the light reaches the surface of the recording layer 34 and is reflected by the surface of the recording layer 34, thereby causing multiple reflections inside each layer, resulting in a problem that the exposed area becomes thick and recording unevenness such as moire occurs. was there.

FIG. 12B is a cross-sectional view showing an example of the recording body 30, and prevents regular reflection of incident light used for recording between the recording layer 34 in which the photothermal conversion material is dispersed and the base 33 as shown in the figure. A light diffusion layer in which powder (TiO ₂ , MgO, etc.) is dispersed in a binder is used as the layer 35 for preventing regular reflection. As a result, the specular reflection component when the incident light is reflected by the surface of the substrate 33 is weakened, the occurrence of multiple reflections in each layer is reduced, and the problem is that the exposed area is fattened and recording irregularities such as moire. The problem of generating was reduced.

  FIG. 12C is a cross-sectional view for explaining another example of the recording material, in which 33a is a fine unevenness provided on the surface of the substrate 33 on the recording layer 34 side. The irregularity 33a prevents regular reflection of incident light used for recording. Thus, according to the configuration shown in FIG. 12B, the cost may increase due to an increase in the layer configuration. Thus, fine irregularities 33a are provided on the surface of the substrate 33 on the recording layer 34 side. Then, the specular reflection component when incident light is reflected by the surface of the substrate 33 is weakened, the occurrence of multiple reflections in each layer is reduced, and the problem is that the exposed area becomes fat and recording unevenness such as moire. The problem of occurrence is reduced, and the layer structure is not increased, so that it can be produced at low cost. In addition, it was set as the roughness of about 0.1-1.0 micrometer as fine unevenness | corrugation.

  FIG. 13A is a cross-sectional view for explaining another example of the recording medium, in which 31 is a recording layer, 32 is a photothermal conversion layer, and 36 is a transparent substrate. In the recording medium 30 including the conversion layer 32 and the transparent substrate 36, the light incident from the surface of the recording layer 31 passes through the recording layer 31, the photothermal conversion layer 32, and the transparent substrate 36 and is transparent as described above. The specular reflection component is strong when reflected on the back surface of the substrate 36, and reaches the boundary surface between the transparent substrate 36 and the photothermal conversion layer 32, the boundary surface between the photothermal conversion layer 32 and the recording layer 31, or the surface of the recording layer 31. When the light reaches the surface and is reflected by the boundary surface, the surface, and the like, multiple reflection occurs inside each layer, and there is a problem that the exposed area is thickened and recording unevenness such as moire occurs.

FIG. 13B is a cross-sectional view of the recording medium. As shown in the drawing, a regular reflection blocking layer 35 for blocking regular reflection of incident light used for recording on the surface of the transparent substrate 36 opposite to the photothermal conversion layer 32 is shown. As the layer 35 for preventing regular reflection, a light diffusion layer in which powder (TiO ₂ , MgO, etc.) is dispersed in a binder is used. As a result, the specular reflection component at the time of reflection on the back surface of the transparent substrate 36 is weakened, and multiple reflections are less likely to occur inside each layer, resulting in a problem that the exposed area becomes fat and recording irregularities such as moire. The problem was reduced.

  FIG. 13C is a cross-sectional view of another recording medium, in which 36a is a fine unevenness provided on the surface of the transparent substrate 36 opposite to the photothermal conversion layer 32, and this unevenness 36a is used for recording. This prevents the regular reflection of incident light. Thus, according to the configuration shown in FIG. 13B, the layer configuration increases, which may increase the cost. In order to solve this problem, fine irregularities were provided on the surface of the transparent substrate 36 opposite to the photothermal conversion layer 32, and the fine irregularities were roughened to about 0.1 to 1.0 μm. As a result, the specular reflection component when incident light is reflected on the surface of the transparent substrate is weakened, the occurrence of multiple reflections in each layer is reduced, and the problem is that the exposed area becomes thicker and recording unevenness such as moire occurs. The problem of occurring has been reduced. Further, since the layer structure is not increased, it can be produced at low cost.

  FIG. 14A is a cross-sectional view for explaining another example of the recording body, in which 34 is a recording layer in which a photothermal conversion material is dispersed, 36 is a transparent substrate, and such a photothermal conversion material is used. In the recording body 30 composed of the dispersed recording layer 34 and the transparent substrate 36, light incident from the surface of the recording layer 34 passes through the recording layer 34 and the transparent substrate 36 and is reflected by the back surface of the transparent substrate 36. The specular reflection component is strong and reaches the boundary surface of the transparent substrate 36 and the recording layer 34 or the surface of the recording layer 34, and this is reflected by the boundary surface, the surface, etc., thereby causing multiple reflections inside the layer and exposure. There is a problem that a thickened area becomes thick and a recording unevenness such as moire occurs.

FIG. 14B is a cross-sectional view of the recording body. As shown in the drawing, a regular reflection blocking layer 35 for blocking regular reflection of incident light used for recording is provided on the surface of the transparent substrate 36 opposite to the recording layer 34. A light diffusion layer formed by dispersing powder (TiO ₂ , MgO, etc.) in a binder was used as the layer 35 provided to prevent regular reflection. As a result, the specular reflection component at the time of reflection on the back surface of the transparent substrate 36 is weakened, and multiple reflections are less likely to occur inside each layer, resulting in a problem that the exposed area becomes fat and recording irregularities such as moire. The problem was reduced.

  FIG. 14C is a cross-sectional view of another recording medium. In FIG. 14A, reference numeral 36a denotes fine irregularities provided on the surface of the transparent substrate 36 on the side opposite to the recording layer 34. Due to the irregularities, incident light used for recording is shown. It is intended to prevent regular reflection of light. Thus, according to the structure shown in FIG. 14B, the layer structure increases, which may increase the cost. In order to solve this problem, the surface of the transparent substrate 36 opposite to the recording layer 34 is provided with fine unevenness, and the fine unevenness is set to a roughness of about 0.1 to 1.0 μm. As a result, the specular reflection component when reflected on the surface of the transparent substrate 36 is weakened, and multiple reflections are less likely to occur inside each layer, resulting in a problem that the exposed area becomes fat and recording unevenness such as moire occurs. The problem was reduced. In addition, since the layer structure is not increased, it can be produced at low cost.

  FIG. 15A1 is a cross-sectional configuration diagram of a main part of another recording body, in which 30 is a recording body comprising a recording layer 31, a photothermal conversion layer 32 and a transparent substrate 36, and 40 is carrying the recording body 30. In the case where the recording medium 30 is supported on the recording medium carrier 40 by the recording medium roller 2 shown in FIG. 6, for example, the recording medium 30, the light incident from the surface of the recording layer 31 is recorded on the recording layer 31. 31, the specular reflection component is strong when passing through the light-to-heat conversion layer 32 and the transparent substrate 36 and being reflected on the surface of the recording medium carrier 40, and the interface between the transparent substrate 36 and the light-to-heat conversion layer 32, the light-to-heat conversion layer 32 reaches the boundary surface of 32 and the recording layer 31 or the surface of the recording layer 31, and this is reflected at each boundary surface, the surface, etc., thereby causing multiple reflections inside each layer, and the exposed area becomes thicker. There is a problem that recording unevenness such as moire occurs. When the exposed area is thick, the image portion is thickened in the case of the image portion exposure method, and the image portion is thinned in the case of the non-image portion exposure method.

  FIG. 15 (B1) is a cross-sectional view of the principal part of another recording body, in which 30 is a recording body comprising a recording layer 34 and a transparent substrate 36 in which a photothermal conversion material is dispersed, and 40 is a recording body 30. When the recording body 30 is supported on the support 40 by the recording body support 2, for example, the recording body roller 2 shown in FIG. 1, the light incident from the surface of the recording layer 34 is recorded on the recording layer 34 and When the light passes through the transparent substrate 36 and is reflected by the surface of the recording medium carrier 40, the specular reflection component is strong and reaches the boundary surface between the transparent substrate 36 and the recording layer 34 or the surface of the recording layer 34. As a result of reflection at the boundary surface, the surface, etc., multiple reflection occurs inside the layer, and there is a problem that an exposed area becomes thick and a recording unevenness such as moire occurs. When the exposed area is thick, the image portion is thickened in the case of the image portion exposure method, and the image portion is thinned in the case of the non-image portion exposure method.

FIGS. 15A2 and 15B2 are cross-sectional structural views of the main part of the recording body, respectively, and as shown in the drawing, regular reflection for preventing regular reflection of incident light used for recording on the surface of the recording medium carrier 40 is shown. A blocking layer 35 is provided, and a light diffusion layer in which powder (TiO ₂ , MgO, etc.) is dispersed in a binder is used as the layer 35 for blocking regular reflection. As a result, the specular reflection component at the time of reflection on the surface of the recording medium carrier 40 is weakened, and multiple reflections are less likely to occur inside each layer, so that the exposed area becomes thicker and recording unevenness such as moire. The problem of generating was reduced.

  FIGS. 15A3 and 15B3 are cross-sectional views of the main part of another recording body. In FIG. 15A, reference numeral 40a denotes a fine unevenness provided on the surface of the recording medium carrier 40. The roughness was about 0.1 to 1.0 μm. As a result, the specular reflection component at the time of reflection on the surface of the recording medium carrier 40 is weakened, and multiple reflections are less likely to occur inside each layer, so that the exposed area becomes thicker and recording unevenness such as moire. The problem of generating was reduced. Further, since the layer structure is not increased, it can be produced at low cost.

  As described above, the recording body 10 (or 30) is used for reuse after the desired number of sheets have been printed and the ink remaining on the recording body is removed. The less ink remaining on the top, the easier it will be to remove the residual ink. When the surface of the recording medium is washed, if the surface of the recording medium is rough, the ink pigment tends to remain in the recesses. Therefore, by making the recording body smoother, specifically, the residual pigment can be reduced by setting the surface roughness of the recording body to 20 μm or less, preferably 10 μm or less. Therefore, in the present invention, the surface of the recording body is smoothed to reduce the ink remaining on the surface of the recording body, thereby facilitating cleaning of the surface of the recording body.

  Further, when the surface of the recording body comes into contact with any member and the surface is scratched, the function as the recording body at that location is impaired, which may cause scumming or white spots. Further, even when the function as a recording medium is carried, the pigment tends to remain at the location, which may cause background staining. In order to avoid this, it is preferable to increase the hardness of the recording layer so that it is less likely to be damaged. Specifically, when the pencil hardness of the recording layer is H or higher, preferably 2H or higher, the surface of the recording body can be hardly damaged.

Further, by imparting elasticity to the recording layer of the recording body, it is possible to make the recording surface difficult to be damaged by relaxing the stress applied to the recording body surface. Further, by making the thickness of the recording layer above a certain level, it is possible to make it harder to be damaged. Specifically, the Young's modulus of the recording layer 1.0x10 ⁷ N / m ² or less, preferably, a 0.5 × 10 ⁷ N / m ² or less, the thickness of the recording layer 2μm or more, preferably, 4 [mu] m or more And

Further, by imparting elasticity to the substrate of the recording body, the surface of the recording body can be hardly damaged by relaxing the stress applied to the surface of the recording body. Further, by making the thickness of such a substrate equal to or greater than a certain value, it is possible to make it more difficult to be damaged. Specifically, the Young's modulus of the substrate 11 1.0x10 ⁸ N / m ² or less, preferably, 1.0 × and 10 ⁸ N / m ^2, the thickness of the substrate 11 25 [mu] m or more, preferably, a 50μm or more To do.

Further, as shown in FIG. 16, recording is also performed by relaxing a stress applied to the surface of the recording body by providing a cushion layer 38 having elasticity between the recording layer 31 (or 34) of the recording body 30 and the substrate 33. The body surface can be made hard to be damaged. Further, by making the thickness of the cushion layer 38 a certain level or more, it is possible to make the scratch more difficult. Specifically, the Young's modulus of the cushion layer 38 is 8.0 × 10 ⁷ N / m ² or less, preferably 2.5 × 10 ⁷ N / m ^2, and the thickness of the cushion layer 38 is 5 μm or more, preferably 10 μm or more. .

  According to the recording medium as described above, after printing the desired number of sheets, the image formed on the recording medium is erased, a new image is formed on the recording medium, and the recording medium is used again. However, in order to reuse a recording medium that has been used once, unless the ink remaining on the recording medium is removed cleanly after the previous use, the remaining ink prevents new image formation.

  As described above, the recording body 10 (or 30), after performing a predetermined number of prints, erases the latent image (lyophilic area) formed on the recording body, and on the recording body By removing the remaining ink, a new image (latent image) is formed on the recording medium so that it can be used again. The remaining ink removing method is performed in the image forming apparatus main body. However, the recording roller 2 may be removed from the image forming apparatus main body, or may be removed from the image forming apparatus main body.

  The present invention applies a liquid compatible with the resin and pigment contained in the recording ink to the recording material after the desired number of prints are completed as described above, or records the liquid in the compatible liquid. The body is immersed, and then the ink pigment and resin on the recording body are wiped off together with the compatible liquid with a waste cloth or the like. As long as the liquid is compatible with the ink resin and the pigment, any of aliphatic hydrocarbons, aromatics, ketones, alcohols, polar solvents, nonpolar solvents, and the like may be used. Specifically, a commercially available blanket cleaner is applied to the developed recording medium 10, and the ink is wiped off with a waste cloth or the like.

  In addition, the present invention applies a non-volatile or volatile solvent contained in ink to a recording body that has been printed, and removes it with a waste cloth to effectively remove ink pigments and resin on the recording body. It is. A solvent to be applied is selected according to the ink to be removed, such as a paraffinic or olefinic solvent contained in the ink. Specifically, solvent No. 6 (paraffinic solvent) used as an ink solvent is applied to the surface of the developed recording medium, and the ink is wiped off with a waste cloth or the like.

  Furthermore, a liquid that is compatible with the resin and pigment contained in the recording ink is applied to the recording body after printing, or a non-volatile or volatile solvent contained in the recording ink is applied, or The recording medium is placed in these liquid tanks, ultrasonic waves are applied, and the surface of the recording medium is washed by non-contact means to remove residual ink. Specifically, the ink can be removed without damaging the surface of the recording body by immersing the developed recording body in a blanket cleaner liquid and removing the ink with an ultrasonic cleaner.

  Further, after the remaining ink is removed, the surface of the recording body is washed, and the ink pigment, ink solvent, and cleaning liquid remaining on the surface of the recording body are completely removed. For example, after ink removal, residues such as water and surfactant on the surface of the recording body are completely removed, and cleaning is performed using a liquid that does not remain on the surface of the recording body. Specifically, after the residual ink is removed by the above-described method, the surface of the recording material is washed with a 10% solution of a fluorosurfactant Surflon (manufactured by Asahi Kasei).

  As described above, after a desired number of prints are printed on the recording medium, the ink remaining on the recording medium is removed and reused. In this case, the recording medium remains on the recording medium. The less ink that is present, the easier it will be to remove residual ink.

  In order to remove the ink remaining on the recording medium after the recording, the adhesive member is brought into contact with the surface of the developed recording body used for printing, thereby remaining on the surface of the recording body. It is also possible to easily remove the ink that is present. The adhesive member may be either a single member whose material itself constitutes an adhesive or a composite member obtained by applying an adhesive tape or an adhesive to NBR rubber. Specifically, the ink is removed by bringing an isobutyl rubber roller into contact with the surface of the developed recording medium.

  Ink remaining on the surface of the recording medium can also be easily removed by bringing a member having a roughness higher than the surface of the recording body into contact with the surface of the developed recording medium. In this case, the surface of the member to be contacted should have a roughness equal to or greater than the surface of the recording body. Specifically, when the surface of the recording body has a roughness of 10 μm, the member to be contacted is 20 μm. The ink can be removed if it has a roughness of.

  Furthermore, the ink remaining on the surface of the recording medium can be easily removed by forming a solid film on the surface of the developed recording medium and removing the film together with the ink. In this case, a liquid that forms a solid film in the absence of moisture is applied, and after drying, the residual ink on the recording medium is removed together with the film. Specifically, a 2% aqueous solution of polyvinyl alcohol (POVAL) is applied to the surface of the recording material, and after drying, the POVAL film is removed together with the ink.

  Furthermore, the ink can be easily and effectively removed by removing the ink by the above-mentioned method after completely cured by residual natural drying on the surface of the developed recording medium. Specifically, after the printing is completed, the ink is left to stand until the ink is completely cured. Specifically, after 3 to 4 hours have elapsed after the development, the ink is removed by contacting with isobutyl rubber.

  Alternatively, the ink remaining on the surface of the developed recording medium is forcibly and completely cured, and then the ink is removed by the above-described method, whereby the ink can be removed easily and in a short time. Specifically, after the residual ink on the recording body is completely cured by forcible means such as heat fixing or silicone fixing method, the ink is cured by bringing silicone rubber into contact with the surface of the recording medium after development. After applying and drying a POVAL aqueous solution, the ink is removed together with the film.

1 is a main part configuration diagram for explaining an example of an image forming apparatus; It is principal part sectional drawing of a recording body. It is a figure which shows the structural example at the time of providing light (electromagnetic wave) absorption capability to the recording body itself. It is a figure which shows the basic structure of a polymeric pigment | dye, and its specific structure. It is a principal part block diagram which shows an example at the time of providing a reflection layer in a recording body. It is a figure which shows the example at the time of forming the surface by the side of a reflection layer in contact with the recording layer into a rough surface. It is a figure which shows the conventional usage example (example using a liquid) of a recording body. It is a principal part block diagram for demonstrating the example (when using a gel layer) of the other recording body. It is a principal part block diagram for demonstrating the example (when using a microcapsule layer) of the other recording body. It is another principal part block diagram of an image forming apparatus. It is a principal part block diagram for demonstrating an example of a recording body. It is a cross-sectional block diagram for demonstrating the other example of a recording body. It is a cross-sectional block diagram for demonstrating the other example of a recording body. It is a cross-sectional block diagram for demonstrating the other example of a recording body. It is a cross-sectional block diagram for demonstrating the other example of a recording body. It is a cross-sectional block diagram for demonstrating an example of a recording body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Heat source, 2 ... Recording body roller, 3 ... Inking unit, 4 ... Transfer roller, 5 ... Recording paper, 6 ... Pressure roller, 7 ... Infrared heater, 8 ... Cleaning unit, 9 ... Liquid layer formation means, 10, 30 ... recording member, 40 ... recording member carrier.

Claims (10)

  A residual ink removing method for removing ink remaining on a recording medium having a heat-sensitive wettability changing function, wherein the residual ink removing method includes a resin and a pigment contained in the recording ink in the recording medium A method for removing residual ink on an image recording medium, comprising applying a liquid compatible with the liquid and then wiping off the applied liquid.   A residual ink removal method for removing ink remaining on a recording medium having a heat-sensitive wettability change function, wherein the residual ink removal method comprises: A method for removing residual ink on a recording medium, which comprises applying a volatile solvent and then wiping off the applied liquid.   A residual ink removing method for removing ink remaining on a recording medium having a thermal wettability changing function, the residual ink removing method comprising: a resin and a pigment contained in the recording ink in the recording medium; A method for removing residual ink on an image recording material, comprising applying a compatible liquid and then ultrasonically cleaning the recording material.   A residual ink removal method for removing ink remaining on a recording medium having a heat-sensitive wettability change function, wherein the residual ink removal method includes a non-volatile solvent contained in the recording ink in the recording medium. A method for removing residual ink on an image recording body, which comprises applying and then ultrasonically cleaning the recording body.   A method for removing residual ink on an image recording body, comprising: cleaning the surface of the recording body after removing the residual ink on the recording body by the method according to claim 1.   An ink removing method for removing ink remaining on the surface of a recording medium having a heat-sensitive wettability change function, wherein an adhesive member is brought into contact with the surface of a developed recording body, and then the adhesive member is placed on the surface of the recording body A method for removing residual ink on an image recording body, wherein the residual ink on the surface of the recording body is removed together with the adhesive member by peeling the ink from the recording body.   An ink removing method for removing ink remaining on the surface of a recording medium having a heat-sensitive wettability change function, wherein the surface of the developed recording medium has a roughness greater than or equal to the roughness of the surface of the recording medium And then removing the residual ink on the surface of the recording body together with the member by peeling the member from the surface of the recording body.   An ink removing method for removing ink remaining on the surface of a recording medium having a thermal wettability changing function, wherein a solid film is formed on the surface of a developed recording medium, and then the film is peeled off from the surface of the recording medium Thus, the residual ink on the surface of the recording medium is removed together with the film.   An ink removing method for removing ink remaining on the surface of a recording medium having a thermal wettability changing function, wherein the ink remaining on the surface of the recording body is completely cured by natural drying, and then the ink is removed. A method for removing residual ink on an image recording medium, wherein the residual ink on the recording medium is removed by any one of methods 1 to 8.   An ink removing method for removing ink remaining on the surface of a recording medium having a heat sensitive wettability change function, wherein the ink remaining on the surface of the recording body is forcibly completely cured and then the ink is removed. A method for removing residual ink on an image recording medium, wherein the residual ink on the recording medium is removed by any one of methods 1 to 8.

Images