JPH11143310A - Reproducing method of material to be recorded, method and device for repeatedly using it, electrophotographic toner and the material be recorded - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reproduce a material to be recorded which can keep a secret, without generating an afterimage by allowing an image forming material to contain a coloring component difficult to dissolve and a colorless charging control agent in an image removal accelerating liquid incorporating a surfactant and water, and using the image removal accelerating liquid incorporating the surfactant and water. SOLUTION: The image removal accelerating liquid incorporating the surfactant and water is imparted onto the material to be recorded having an image formed with the image forming material incorporating the coloring component difficult to dissolve and the colorless charging control agent in the image removal accelerating liquid incorporating the surfactant and water, to reproduce the material to be recorded. Even if, for instance, electrophotographic toner whose constituting material is actually insoluble in hot water is used as the image forming material, the coloring component in the electrophotographic toner is never eluted in the image removable accelerating liquid incorporating the surfactant and water. Further, the colorless charging control agent is used so that the material to be recorded can be reproduced without generating a dyeing afterimage on the material to be recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic copying machine, a printer or a hot-melt ink-jet method which comprises a layer swelling with a liquid containing water at least in the vicinity of the surface on which an image is formed. A recording material reproducing method suitable for removing an image forming material from a recording material having an image formed by a plastic or heat-fusible image forming material and reusing the recording material for image formation. The present invention relates to a method and an apparatus for repeatedly using a recording material, an electrophotographic toner used in the method, and a recording material.

[0002]

2. Description of the Related Art Due to recent OA, printer paper and copy paper have been used in large quantities. This has led to the problem of deteriorating the global environment due to deforestation. Conventionally, the only solution to this problem has been to remove ink or the like from the paper once used (deinking), crush and re-use the paper as recycled paper.
However, Iwasaki et al. (Paper and Pulp Technology Times, Vol.
33, no. 6 (1990)), with OA waste paper, the printing method is different from normal printing, so that deinking or bleaching is difficult, and it is difficult to reproduce using only conventional recycling techniques. Therefore, toner deinking has been studied (Tapp
i Journal, March, 102 (1986)
Etc.), and there were problems such as a large system and high cost.

Therefore, recently, a sheet has been developed which can remove an image on a sheet once used by cleaning and can reuse the image for copying or printing. For example, Japanese Patent Application Laid-Open No. 4-67043 discloses a sheet-like support in which the surface of a sheet-shaped support, in particular, only one side is subjected to a release treatment, and the recording material subjected to the release treatment is marked so as to be distinguished from plain paper. It has been disclosed. However, this is a special paper and has a problem such as difficulty in fixing, and it is difficult to use it as general copying paper. Further, JP-A-1-101576 and JP-A-1-101577 disclose that an image is removed by ultrasonically treating a toner on a recording material in an organic solvent in which the toner is dissolved. However, there are problems with pollution, ignition and toxicity caused by organic solvents, and it is difficult to use them in ordinary offices and homes.

In order to solve such a problem, Japanese Patent Application Laid-Open No. Hei 7-13383 discloses a method in which at least a part of a paper layer mainly composed of cellulose fiber, and an image is formed on the paper layer. The recording material is impregnated with a liquid containing water (image removal accelerating liquid), and in a state where the adhesive force between the paper layer and the image forming substance is weakened, the recording material and the peeling member are pressed against each other, and the paper layer is thermally flexible. There is disclosed a method for regenerating a recording material from which a non-conductive image forming substance is peeled off. This method is excellent in that it can reproduce commonly used copy paper and printer paper and that it is safe. Japanese Patent Application Laid-Open No. Hei 7-301940 discloses an image removal accelerating liquid containing a polyoxyethylene alkyl ether carboxylate for the purpose of suppressing damage to a recording material. An image removal accelerating liquid containing an alkyl sulfosuccinate for the purpose of reducing the amount of the liquid is disclosed in JP-A-8-95283, and an image removal accelerating liquid containing an acetylene glycol for the purpose of improving image removability is disclosed. Have been.

However, in the above-mentioned reproduction method, depending on the type of the image forming substance and the image removal accelerating liquid, the coloring component contained in the image forming substance elutes into the image removal accelerating liquid,
There is a problem that a colored afterimage (dyed afterimage) is generated on the recording material after the image is removed. As a method for solving such a problem of the residual image, Japanese Patent Application Laid-Open No. Hei 7-92866 discloses that an electrophotographic toner whose constituent material is substantially insoluble in hot water is used as an image forming substance. Have been. However, when a recording material having an image formed by using such an electrophotographic toner is applied with an image removal accelerating liquid and the recording material is reproduced by the above-described reproduction method, the dyeing residual image is also generated. May occur, and this problem has not yet been sufficiently solved.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve such a problem and to remove an image formed on a recording material without damaging the recording material. A method for reproducing a recording material capable of maintaining confidentiality without causing a colored afterimage (dying afterimage) due to a coloring component contained in an image forming substance on a recording material afterward, and a method for repeatedly using the recording material And an electrophotographic toner and a recording material for use in the apparatus and the method for repeatedly using the apparatus.

[0007]

An object of the present invention is to provide an image forming apparatus comprising a layer which swells at least in the vicinity of the surface on which an image is to be formed by an image removal accelerating liquid, and which has a thermoplastic or thermofusible layer. After applying the image removal accelerating liquid to the recording material on which the image formed by the image forming substance is fixed in the form of a film,
The image forming substance on the recording material is adhered to the peeling member by bringing the recording material into contact with the peeling member and applying heat or heat and pressure, and then the recording material and the peeling member are separated to form an image from the recording material. In a method for reproducing a recording material, in which a substance is transferred to a release member to remove an image forming substance from the recording material, a coloring component in which the image forming substance is difficult to dissolve in an image removal accelerating liquid containing a surfactant and water, and This is achieved by a method for reproducing a recording material, comprising a colorless charge control agent, and using an image removal accelerating liquid containing a surfactant and water as an image removal accelerating liquid.

Another object of the present invention is to form a thermoplastic or heat-fusible image on the surface of a recording material comprising at least a layer swelling with an image removal accelerating liquid at the vicinity of the surface on which an image is formed. After forming an image using the substance, after using the recording medium on which the image is formed as an information holding medium,
In a method of repeatedly using a recording material for removing an image forming substance from the recording material and reusing the recording material for image formation, a coloring component that is difficult to dissolve in an image removal accelerating liquid containing a surfactant and water, An image is formed on the surface of a recording material using an image-forming substance containing a colorless charge control agent, and the removal of an image containing a surfactant and water is promoted on the surface of the recording material on which the image is fixed in a film form. After applying the liquid, the recording material is brought into contact with the peeling member, and the image forming substance on the recording material is adhered to the peeling member by heating or heating and pressing, and then the recording material and the peeling member are separated. The recording material is reproduced by transferring the image forming substance from the recording material to a peeling member, and the reproduced recording material is reused for image formation. Is .

Hereinafter, the present invention will be described in detail. According to the present invention, a coloring component that is difficult to dissolve in an image removal accelerating liquid containing a surfactant and water, and a recording material having an image formed by an image forming substance containing a colorless charge control agent, By applying an image removal accelerating liquid containing a surfactant and water to reproduce the recording material, the recording material can be recorded without damaging the recording material and without causing a dyeing residual image on the recording material. Regeneration of materials can be performed. This is because, for example, even when an electrophotographic toner whose constituent material is substantially insoluble in hot water is used as an image forming substance, a dye or pigment or a charge control agent which is a coloring component in the electrophotographic toner is used as an image forming substance. The surfactant contained in the removal accelerating solution elutes into the image removal accelerating solution, which may result in an afterimage of dyeing. In the present invention, however, in the present invention, the image removing accelerating method in which the coloring component contains a surfactant and water is used. Without eluting into
Further, since the colorless charge control agent is used, no afterimage of dyeing is generated on the recording material.

The fact that the coloring component of the image forming substance is difficult to dissolve in the image removal accelerating solution containing a surfactant and water can be confirmed as follows. That is, the image-forming substance or the coloring component contained in the image-forming substance is mixed with an image-removal-promoting liquid containing a surfactant and water, and dispersed by ultrasonic waves at a temperature at which the image-removal-promoting liquid does not evaporate. After filtration, it can be confirmed by a method of measuring the absorption spectrum in the visible region of the filtrate, etc.
By using an image forming substance having a smaller absorbance of λmax (maximum absorption wavelength) in the absorption spectrum, it is possible to more effectively suppress the afterimage of dyeing. In particular, it is preferable that the image forming substance has an absorbance of λmax (maximum absorption wavelength) of the absorption spectrum of 0.02 or less.

[0011] As a coloring component in the image forming substance,
The coloring agent is mainly used, but when the image forming substance is an electrophotographic toner, a charge controlling agent or the like may also be a coloring component. Examples of colorants that are difficult to dissolve in an image removal accelerating solution containing a surfactant and water include inorganic and organic pigments, for example, inorganic pigments such as carbon black and loess, azo pigments, xanthene pigments, thioindigo pigments, quinacridone derivatives, and triquinones. Organic pigments such as phenylmethane pigments, phthalocyanine pigments and benzidine yellow, oil-soluble dyes, and the like.

Examples of the charge control agent as a coloring component which is difficult to dissolve in an image removal accelerating solution containing a surfactant and water include, for example, lake compounds of basic dyes such as Victoria Blue and rhodamine type dyes; Quaternary ammonium salt compounds, guanidine compounds, anthranilic acid compounds, nigrosine dyes, EDTA complexes and the like.

Examples of the colorless charge control agent include quaternary ammonium salt compounds, quaternary ammonium salt organosilicon compounds, zinc salicylate complex compounds, poly-4-vinylphenol, aluminum salicylate complex, and polyamine resins. , Pyridinium compounds, metal complexes of amine derivatives or pyridine derivatives, bistriphenylphosphonium salts, metal complexes of aromatic hydroxycarboxylic acids or aromatic dicarboxylic acids such as salicylic acid and alkyl salicylic acid, boron complex salts, silicon compounds of monocyclic or polycyclic diols , Calix (n) arene compounds, metal complex salts of anthranilic acid, pyromellitic acid derivatives and salts thereof, and copolymers of an organic fluorine monomer and a vinyl monomer. A quaternary ammonium salt organosilicon compound represented by the formula: Chill acid zinc complex compound, poly-4-vinylphenol, aluminum salicylate complex compound.

[0014]

Embedded image

The colorless charge control agent may be one that is difficult to dissolve in the image removal accelerating liquid or one that can be dissolved therein. Does not occur.

Further, the image-forming substance contains, in addition to the coloring component and the colorless charge control agent, a thermoplastic or heat-fusible polymer compound. Examples of such a polymer compound include polystyrene, Styrene such as polychloroethylene, polyvinyltoluene, and its substituted homopolymer, styrene-p-chlorostyrene copolymer, styrene-propylene copolymer, styrene-vinyltoluene copolymer, styrene-vinylnaphthalene copolymer Copolymer, styrene-methyl acrylate copolymer, styrene-ethyl acrylate copolymer, styrene-butyl acrylate copolymer, styrene-octyl acrylate copolymer, styrene-methyl methacrylate copolymer, styrene-methacryl Ethyl acrylate copolymer, styrene-butyl methacrylate copolymer, styrene - methyl methacrylate copolymer chloromethyl methacrylate, styrene - acrylonitrile copolymer, styrene -
Vinyl methyl ether copolymer, styrene-vinyl ethyl ether copolymer, styrene-vinyl methyl ketone copolymer, styrene-butadiene copolymer, styrene-isoprene copolymer, styrene-acrylonitrile-indene copolymer, styrene- Maleic acid copolymer, styrene-based copolymer such as styrene-maleic acid ester copolymer, polymethyl acrylate, polybutyl acrylate, polymethyl methacrylate, polybutyl methacrylate, polyvinyl chloride, polyvinyl acetate, polyethylene, polypropylene, Polyester, polyvinyl butyral, rosin, modified rosin, rosin (abietic acid) derivative, terpene resin, phenol resin, polyamide, alkyd resin, epoxy resin, ethylene-vinyl acetate copolymer (EVA), silico Down resin, aliphatic or alicyclic hydrocarbon resins, aromatic petroleum resins, chlorinated paraffin, paraffin waxes, and the like, these, alone, or two
Used as a mixture of more than one species.

When the image-forming substance is an electrophotographic toner, the thermoplastic high molecular compound is preferably a homopolymer, copolymer, polyester, or the like, such as polystyrene, polyacrylate, or polymethacrylate. .

When the image forming substance is an electrophotographic toner, a release agent can be added in addition to a thermoplastic polymer compound, a colorant, a charge control agent and the like. Release agents include synthetic waxes such as low molecular weight polyethylene and polypropylene, as well as vegetable waxes such as candelilla wax, carnauba wax, rice wax, wood wax, jojoba oil, beeswax, lanolin, whale wax, etc. And mineral waxes such as montan wax and ozokerite, oil-based waxes such as hardened castor oil, hydroxystearic acid, fatty acid amide and phenol fatty acid ester. Further, a fluidizing agent, a cleaning agent, a filler, and the like are added as needed.

Next, an image removal accelerating liquid containing a surfactant and water will be described. The surfactant has an effect of promptly penetrating the image removal accelerating liquid into the recording material, and also penetrates the adhesive interface between the recording material and the image forming substance, and causes a film-like image on the recording material to be removed. It functions to weaken the adhesive strength with the recording material. As the surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, a nonionic surfactant, or the like can be used.

Specific examples of the anionic surfactant include:
Carboxylate such as soap, N-acyl amino acid salt, alkyl ether acetate, acylated peptide, alkyl sulfonate, alkyl benzene sulfonate, alkyl naphthalene sulfonate, sulfosuccinate, alkyl sulfosuccinate, α -Sulfonates such as olefin sulfonate and N-acyl sulfonate, sulfated oils, alkyl sulfates, alkyl ether carboxylates, alkyl ether sulfates, sulfate salts such as alkyl amide sulfates,
Alkyl phosphates, alkyl ether phosphates, phosphate salts such as alkyl aryl phosphates, fluoroalkyl carboxylate, fluoroalkyl sulfonate,
Examples thereof include fluoroalkyl phosphates, carboxylic acid-modified polydimethylsiloxane, and sulfonic acid-modified polydimethylsiloxane. Specific examples of the cationic surfactant include an aliphatic amine salt, an alkyl quaternary ammonium salt, Alkyl trimethyl ammonium salts, aromatic amine salts, aromatic quaternary ammonium salts,
Heterocyclic quaternary ammonium salts and the like can be mentioned.
Further, specific examples of the amphoteric surfactant include carboxybetaine, betaine types such as sulfobetaine, aminocarboxylates, imidazoline, and the like. Specific examples of the nonionic surfactant include aliphatic surfactants. Examples thereof include ethylene oxide adducts of alcohols, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, and alkylamine oxides.

Among the above surfactants, alkyl sulfosuccinates are particularly excellent in image removing properties. The reason why the image removal accelerating liquid containing the alkyl sulfosuccinate has excellent image removal properties is that the wettability to the recording material and the image forming substance is high, and the image is formed at the interface between the recording material and the image forming substance. It is presumed that the removal accelerating liquid permeates quickly, and there is a phenomenon that the image forming substance removed from the recording material adheres to the recording material again due to the contact between the peeling member and the recording material. This is presumed to be due to the large nature of the behavior.

Specific examples of the alkyl sulfosuccinate include sulfosuccinate monoester salts such as disodium isodecylsulfosuccinate, disodium sulfosuccinate ethoxylated alcohol half ester, sodium diisobutyl sulfosuccinate, sodium dihexyl sulfosuccinate. , Lithium dihexyl sulfosuccinate, lithium dicyclohexyl sulfosuccinate, sodium dioctyl sulfosuccinate,
Examples thereof include, but are not limited to, sulfosuccinic acid diester salts such as sodium bistridecylsulfosuccinate.

The content of the surfactant in the image removal accelerating solution is preferably 1 to 60% by weight, more preferably 10 to 60% by weight.
The content is in the range of 40% by weight, so that the image forming substance can be further removed.

Further, a compound for plasticizing the image forming substance can be added to the image removal accelerating liquid for the purpose of suppressing damage to the surface of the recording material. In addition, by adding a compound that plasticizes the image forming substance, the temperature at the time of removing the image can be lowered when using heating and pressing and heating contact as the image peeling means, so that power consumption can be reduced. Therefore, the running cost can be reduced.

Compounds which plasticize the image forming substance and have high safety include 2-methoxyethanol, 2-ethoxyethanol, 2- (methoxymethoxy) ethanol, 2-isopropoxyethanol, 2-butoxyethanol, Cellosolves such as isopentyloxyethanol, 2-phenoxyethanol and 2-benzyloxyethanol and carbitols such as furfuryl alcohol, tetrahydrofurfuryl alcohol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, and derivatives thereof 2-methoxyethyl acetate, 2-ethoxyethyl acetate, 2-butoxyethyl acetate, diethylene glycol monoethyl ether acetate DOO, diethylene glycol monobutyl ether acetate and the like. Furthermore, triethylene glycol monomethyl ether, tetraethylene glycol, 1-methkin-2-propanol, 1-ethoxy-2-propanol, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether and polyoxyethylene -Oxypropylene derivatives, 2-pyrrolidinone, N-methyl-2-pyrrolidinone, ethylene carbonate, propylene carbonate,
γ-butyrolactone, 1,3-dimethylimidazolidinone, morpholine, γ-valerolactone and the like are preferred.
Some surfactants also act as plasticizers. Specifically, ethylene oxide adducts of aliphatic alcohols, polyoxyethylene alkyl ethers and polyoxyethylene polyoxypropylene alkyl ethers, and alkylamines Oxides.

Further, a water-soluble polymer can be added to the image removal accelerating liquid together with a surfactant for the purpose of improving the peeling characteristics of the image forming substance from the recording material and the reproduction state of the recording material. As the water-soluble polymer, in the natural system, plant polymers such as arabic gum, gum tragan, guar gum, karaya gum, locust bean gum, arabinogalactone, pectin, quince seed starch, algalic acid, carrageenan, agar, and seaweed. High molecular weight, animal macromolecules such as gelatin, casein, albumin, collagen, etc., microbial macromolecules such as xanthene gum, dextran, and semi-synthetic microfibrils such as methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose Starch-based polymers such as soluble polymers, soluble starch, carboxymethyl starch (CMS), dialdehyde starch, sodium starch glycolate, and sodium starch phosphate; Lithium, seaweed-based polymers such as propylene glycol alginate, pure synthetic systems include vinyl-based polymers such as polyvinyl alcohol, polyvinyl pyrrolidone, and polyvinyl methyl ether, non-crosslinked polyacrylamide, polyacrylic acid and alkali metal salts thereof, and water solubility. Acrylic resins such as styrene acrylic resin, water-soluble styrene maleic acid resin, water-soluble vinyl naphthalene acrylic resin, water-soluble vinyl naphthalene maleic resin, polyvinylpyrrolidone, polyvinyl alcohol, alkali metal salt of β-naphthalenesulfonic acid formalin condensate, A polymer compound having a salt of a cationic functional group such as a quaternary ammonium or an amino group in a side chain,
And natural polymer compounds such as shellac.

In addition, any substance can be added to the image removal accelerating liquid as a pH adjuster as long as it does not adversely affect the prepared image removal accelerating liquid. Examples thereof include amines such as diethanolamine and triethanolamine, lithium hydroxide, sodium hydroxide,
Hydroxides of alkali metal elements such as potassium hydroxide, ammonium hydroxide, quaternary ammonium hydroxide, quaternary phosphonium hydroxide, carbonates of alkali metals such as lithium carbonate, sodium carbonate and potassium carbonate; No.

Further, a preservative can be added for the purpose of enhancing the preservability of the image removal accelerating liquid. Preservatives to be added are preferably those specified as food additives from the viewpoint of safety, and specifically, sodium benzoate, sorbic acid, potassium sorbate, isobutyl p-oxybenzoate, p-oxybenzoic acid Isopropyl, ethyl p-oxybenzoate, butyl p-oxybenzoate, propyl p-oxybenzoate, dehydroacetic acid, sodium dehydroacetate, calcium propionate, sodium propionate, diphenyl, o-phenylphenol, sodium o-phenylphenol , Thiabendazole, imazalil and the like.

Further, a chelating reagent can be added as a peeling aid, and examples thereof include sodium ethylenediaminetetraacetate, sodium nitrilotriacetate, sodium hydroxyethylethylenediaminetriacetate, sodium diethylenetriaminepentaacetate, and sodium uramilniacetate. Further, as the rust preventive, for example, acidic sulfite, sodium thiosulfate, ammonium thiodiglycolate, diisopropylammonium nitrite, pentaerythritol tetranitrate, dicyclohexylammonium nitrite and the like can be added.

A bleaching agent can be added to the image removal accelerating liquid for the purpose of improving the whiteness of the recording material after reproduction.
Specifically, examples of the oxidizing bleach include hydrogen peroxide, sodium peroxide, sodium percarbonate, sodium hypochlorite, and the like. Further, a fluorescent dye, a bluing dye, an enzyme and the like can be added.

In the method of reproducing a recording material and the method of repeatedly using the recording material according to the present invention, the image removing accelerating liquid is used.
The same recording material may be provided a plurality of times.
When the image removal accelerating liquid is applied in a plurality of times, it is not always necessary that all the image removal accelerating liquids applied in each time contain water. It is necessary to apply an image removal accelerating liquid containing water to a recording material.

The recording material to be reproduced by the method for reproducing a recording material and the method for repeatedly using the recording material according to the present invention may be swollen by an image removal accelerating liquid containing water at least in the vicinity of the surface on which an image is formed. Layer, for example, a layer composed of a paper layer containing a polysaccharide natural polymer such as cellulose fiber as a main component is preferable, and examples thereof include, for example, copying or printing paper, but are not limited thereto. The member may be provided with a paper layer of cellulose fiber or the like, and the entire recording material may not be a paper layer.

The method of forming an image which can be removed by the method of reproducing a recording material and the method of repeatedly using the recording material according to the present invention includes a method of forming a film made of a thermoplastic or heat-fusible image forming material on the recording material. Any method may be used as long as a toner image is formed, for example, an electrophotographic method using a dry toner or a wet toner, a thermal transfer method using a hot-melt ink sheet, and an inkjet using a hot melt ink. Or a printing method using an offset plate, an intaglio plate, a relief plate, or a stencil. Here, the film form does not necessarily mean that the entire image forms a single film, but simply that the image forming substance does not penetrate into the recording material, or that the image is printed with an aqueous ink containing a dye. It means that the image forming substance is not adsorbed on the recording material at a molecular level as in the above.

Next, the peeling member used in the present invention will be described. The peeling member is a member for adhering the image forming material on the recording material and peeling the image forming material from the recording material. As a material constituting the peeling member,
It is necessary to exhibit a certain degree of adhesion and heat resistance to the image forming substance. Examples of the material of the release member include synthetic rubbers such as isoprene rubber, neoprene rubber, chloroprene rubber, silicone rubber, butadiene rubber, and fluororubber, natural rubber, epoxy resins such as bisphenol epichlorohydrin condensate, alkyd resins, urea formaldehyde resin, and butyl urea formaldehyde. Resin, butylated melamine formaldehyde resin, amino resin such as benzoguanamine formaldehyde resin, terpene phenol resin, phenol ether resin, phenolic thermosetting resin such as phenol resin, polyvinyl chloride, polyvinylidene chloride, vinylidene chloride-acrylonitrile copolymer,
Vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, ethylene-tetrafluoroethylene copolymer, polyvinylidene fluoride, polyvinyl butyral, polyvinyl formal, polypropylene, vinyl copolymer such as polyethylene, polybutyl acrylate , Acrylic resins such as polymethacrylic acid and polymethyl methacrylate, polyimides, polyamides such as 6,6-nylon, 6-nylon, polycarbonate, polyether sulfone, polyether ether ketone, polyethylene terephthalate, polyethylene naphthalate, aromatic polyester, etc. Thermoplastic or thermosetting synthetic resins such as polyester, polyphenylene sulfide, polyparabalic acid, polyether nitrile, and aramid; nickel, iron, aluminum Metals and oxides such as arm, N
metal alloys such as i-steel, stainless steel, Fe-Ni alloy, Co-Al alloy, Monel, Inconel, duralumin,
Ceramic materials and the like can be mentioned.

These materials can be used alone, but may be laminated or alloyed to improve the image removal characteristics and durability, or may be made of glass fiber, whisker, carbon It can also be used as a composite by adding other additives such as particles, silica particles, and titanium oxide particles.

The optimum material for the peeling member is selected depending on the type of the image forming substance to be peeled, the conditions of the image forming substance removal process, and the like. However, repeated use of the peeling member lowers the reproduction cost. In that case, relatively high heat resistance and surface stability are required. Preferred materials for the release member from the viewpoint of image removal characteristics and durability include polyethylene terephthalate, polyethylene naphthalate, polyetheretherketone, polyphenylenesulfide, polyparabaranic acid, polyethernitrile, aramid, polyimide, polyetherimide, stainless steel, nickel , Alumite and the like.

The peeling member may be formed in any shape of sheet, block, drum or roller. A peeling member such as a sheet, a belt, or a tape can be wound into a roll and unwound from a roll. Further, a release member having an image transfer layer provided on a sheet-like support may be used. Examples thereof include tape-like supports such as cellophane tape, kraft paper tape, polyvinyl chloride tape, acetate tape, and filament tape. An adhesive tape in which an adhesive layer such as a rubber-based or acrylic-based pressure-sensitive adhesive layer is provided on a body is exemplified. The support on which the image transfer layer is formed is preferably a support whose surface is formed of a material having a porous or uneven surface, or a support whose surface is subjected to uneven processing or mat processing.

In the method of reproducing a recording material and the method of repeatedly using the recording material according to the present invention, the recording material is made conductive by the components of the image removal accelerating liquid accumulated and remaining near the surface of the reproduced recording material. When it is difficult to form an electrostatic latent image on a recording material by electrophotography, or when forming an image on a reproduced recording material, it adversely affects the fixability of the image As a post-processing of the recording material from which the image forming substance has been removed, it is desirable to treat the recording material with water or an aqueous solution to remove the accumulated and removed image removal accelerating liquid component. Thus, even when an image is formed on the reproduced recording material by an electrophotographic method or the like, a recording material having good image fixability can be obtained.

As the aqueous solution, an aqueous solution containing not more than 20% by weight of alcohols such as methanol, ethanol and isopropanol and glycols such as ethylene glycol and diethylene glycol can be used.
Further, the preservatives described above may be added to these aqueous solutions. The amount of water or aqueous solution applied in this post-treatment is preferably 0.05 to 0.2 g / A4,
8 to 0.1 g / A4 is more preferred. Within this range, the components of the accumulated image removal accelerating liquid can be removed without causing stretching, wrinkling, waving, curling, and the like on the recording material.

As a method of treating a recording material with water or an aqueous solution, for example, a sponge, cloth, felt, or the like impregnated with water or an aqueous solution is brought into contact with the surface on which the components of the image removal accelerating liquid remain. Rotate, move, apply water or aqueous solution to the recording material to dissolve and remove residual components, or apply water or aqueous solution to the recording material using an application roller of rubber, metal, plastic, etc. And a method of dissolving and removing residual components. Further, by heating the recording material from which the image forming substance has been removed, the residual components on the surface of the recording material are melted, and the residual components are removed from the surface of the recording material by penetrating the inside of the recording material. Can also.

After the image-forming substance has been removed, the recording material is dried and finished to obtain a recording material which is free from curls, wrinkles, and undulations and has higher smoothness and is suitable for reuse. Obtainable.

Next, a method for reproducing a recording material of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view schematically showing an example of a recording material reproducing apparatus for performing the recording material reproducing method of the present invention. The recording material reproducing apparatus shown in FIG. 1 includes a sheet feeding unit 1, an image removing accelerating liquid applying unit 2, an image removing unit 3, a post-processing liquid applying unit 4, a drying finishing unit 5, and a paper receiving unit 6. Has become
A recording material (transfer paper) having an image formed by an electrophotographic copying machine or the like is sent out from the paper feeding unit 1, passes through each unit, and the recording material is reproduced and discharged to the paper receiving unit 6. It has become. The paper feed unit 1 includes a bottom plate 1
The transfer paper (transfer paper having an image formed by an electrophotographic copying machine) 10 accumulated on the sheet 01 is fed from the uppermost sheet by a paper feed roller 102, and the multi-feed is separated by a separation mechanism (not shown). Then, only one transfer sheet 10 is sent out by a pair of registration rollers 104 for timing adjustment and skew correction.

The image removing accelerating liquid applying unit 2 includes a liquid container 201, a liquid remaining amount detecting means in the liquid container 201, an automatic liquid replenishing means 202 for the liquid container 201, and a liquid pumping roller 2.
07, a liquid application roller 208, and a pressing roller 209. The image removal accelerating liquid 20 pumped from the liquid container 201 by the pump roller 207 is squeezed by pressure from a roller contacting the liquid pump roller to remove a small amount of image. An accelerating liquid can be applied to the transfer paper 10.
Also, a combination of two of the application roller units,
By combining with a non-contact type liquid applying means, two-stage application becomes possible. Also, the number of stages can be arbitrarily set according to the purpose.

In the image removing accelerating liquid applying unit 2, the transfer paper 10 fed from the paper feeding unit 1 is provided with an image removing accelerating liquid necessary for the regenerating process, and is conveyed to the next image removing unit 3. You. The image removing unit 3 is constituted by combining a plurality of peeling rollers 302 each having a built-in heating lamp 301 as a means for softening an image forming material,
A configuration in which three peeling belts (peeling members) 303 are wound around is adopted. When the transfer paper 10 is introduced between the separation belts 303, the conveyance path is wavy, so that the separation belt 30
A shear force is generated between the transfer paper 3 and the transfer paper 10. With this force, the image forming substance can be transferred from the transfer paper 10 to the release belt 303 and removed without damaging the surface of the transfer paper 10.

The heating lamp 301 incorporated in the peeling roller 302 heats and softens the image forming substance adhered to the surface of the transfer paper 10 and adhered to the transfer paper.
This is to make the image forming substance easily peel off from the fibers of the transfer paper 10. This heating is desirably performed to such an extent that the image forming substance on the transfer paper 10 does not melt at the pressure contact portion.
When the image forming substance is melted, it becomes difficult to transfer the image forming substance on the transfer paper 10 to the peeling belt side.
Further, if the heating is performed too much, the transfer paper 10 may be dried too much while passing through the image removing unit, and the transfer paper 10 may adhere to the peeling belt via the image forming substance, and the transfer paper may not be separated from the peeling belt. There is. Therefore, it is desirable to heat the transfer paper 10 to such an extent that the transfer paper 10 after passing through the heating unit has some moisture remaining therein and the image forming substance can be prevented from re-adhering to the transfer paper.

The cleaning device includes a spiral roller 3 for removing the image forming substance T on the surface of the peeling belt 303.
And an image forming material receiving container 305 for storing the scraped image forming material T.

The post-treatment liquid application unit 4 includes a liquid container 40
1. Means for detecting remaining amount of liquid in liquid container 401 and liquid container 40
1 automatic liquid supply means 402, liquid pumping roller 40
7, a liquid application roller 408 and a press roller 409. The post-processing liquid 40 pumped up from the liquid container 401 by the liquid pumping roller 407 is squeezed by pressure from a roller contacting the liquid pumping roller, and a small amount of post-processing is performed. The liquid can be applied to the transfer paper 10. In addition, two-stage application is possible by combining two application roller units or by using a non-contact type liquid applying unit. Also, the number of stages can be arbitrarily set according to the purpose.

The transfer paper 10 to which the necessary post-processing liquid has been applied in the post-processing liquid applying unit 4 is conveyed to the next drying unit 5. The drying / finishing unit 5 is for drying the transfer paper 10 and includes a drying drum 502 having a built-in heating lamp 501 made of, for example, aluminum and a finishing belt 503 having good air permeability and high surface smoothness. Instead of or in addition to such a drying mechanism, a member of a roller pair may be used, or a hot air fan or an infrared lamp may be used.

The paper receiving unit 6 has a paper discharge tray 601 for receiving the transfer paper discharged from the drying unit 5. Further, detecting means for detecting whether or not the transfer sheet 10 is present on the sheet feeding table, means for detecting double feeding of the transfer sheet 10 by the sheet feeding unit 1, means for detecting jam in the apparatus of the transfer sheet 10, and lighting control of each heating lamp Means, image forming substance receiving container 305
It is possible to provide a means for detecting inside fullness.

As an apparatus for repeatedly using a recording material, for example, an image forming apparatus such as an electrophotographic copying machine is used as shown in FIG.
And a combination of the recording material reproducing apparatus shown in FIG. A structure in which the reproduced recording material is ejected to a paper feed tray of an image forming apparatus such as an electrophotographic copying machine, so that an image forming unit and a reproduction processing unit are integrated, and the recording material is repeatedly used. You can also.

[0051]

The present invention will be described below in more detail with reference to examples. The number of parts in the examples represents parts by weight.

Example 1 Preparation of Electrophotographic Toner 1 Polyester resin 60 parts Styrene-methacrylate resin 40 parts Aluminum salicylate complex compound (BONTRON E-88, manufactured by Orient Chemical Co., Ltd., colorless charge control agent) 5 parts Carbon black (colored) Agent) 10 parts The above toner components were mixed, kneaded with a hot roll, pulverized and classified to prepare toner 1 for electrophotography having an average particle size of 8.0 μm. Preparation of Image Removal Acceleration Solution 1 Sodium bistridecylsulfosuccinate (surfactant) 20% by weight 2-methyl-2,4-pentanediol 10% by weight Sodium benzoate (preservative) 0.1% by weight Water remaining amount The composition of the formulation was stirred and dissolved to prepare an image removal accelerating liquid 1. The electrophotographic toner 1 and the image removal accelerating liquid 1 were mixed, ultrasonically dispersed at a temperature of 60 ° C., filtered, and the absorption spectrum of the filtrate in the visible region was measured. As a result, no coloring component was eluted. Preparation of post-treatment liquid 1 2-methyl-2,4-pentanediol 15% by weight Sodium benzoate (preservative) 0.1% by weight Water Remaining amount The composition of the above formulation was dissolved by stirring to prepare post-treatment liquid 1. did. Using an electrophotographic copying machine (PPC copying machine FT7000, manufactured by Ricoh Company), a toner image was formed on transfer paper (Type 6200, manufactured by Ricoh Company) using electrophotographic toner 1. For the transfer paper having the toner image, using the reproducing apparatus shown in FIG.
By applying and applying heat and pressure to the transfer paper and the release member, and then separating the transfer paper and the release member,
After removing the toner image from the transfer paper, 0.11 g / A4 of the post-treatment liquid 1 was applied to the transfer paper, and a reproduction process was performed. As a result, the toner image was completely removed, and no dyeing residual image was observed. . When the reproduced transfer paper was reused by the above-described electrophotographic copying machine, an image equivalent to that when an image was formed on the paper before the reproduction was obtained. Further, when the above-described electrophotographic copying machine and reproducing apparatus repeated image formation and reproduction processing five times, an image equivalent to that obtained when an image was formed on paper before reproduction was obtained.

Example 2 Preparation of Electrophotographic Toner 2 Styrene-methacrylate resin 100 parts Poly-4-vinylphenol (manufactured by Maruzen Petrochemical Co., Ltd., Mw22200, colorless charge control agent) 5 parts Carbon black (colorant) 10 parts The above-mentioned toner components were blended, kneaded with a hot roll, pulverized and classified to prepare an electrophotographic toner 2 having an average particle size of 8.0 μm. Preparation of image removal accelerating liquid 2 Sodium dioctyl sulfosuccinate (surfactant) 26% by weight 1,8-octanediol 5% by weight tert-butanol 5% by weight Natriwam benzoate (preservative) 0.1% by weight Water remaining amount The composition having the above formulation was dissolved by stirring to prepare an image removal accelerating liquid 2. The electrophotographic toner 2 and the image removal accelerating liquid 2 were mixed, dispersed ultrasonically at a temperature of 60 ° C., filtered, and the absorption spectrum of the filtrate in the visible region was measured. As a result, no color component was eluted. Electrophotographic copying machine (PPC copying machine FT7
000, manufactured by Ricoh Co., Ltd.) to form a toner image on transfer paper (type 6200, manufactured by Ricoh Co., Ltd.) using electrophotographic toner 2. For the transfer paper having a toner image, the image removal accelerating liquid 2 was added to the transfer paper having a toner content of 0.5 using the reproducing apparatus shown in FIG.
After applying 5 g / A4, the transfer paper and the release member are brought into contact with each other and heated and pressed, and then the transfer paper and the release member are separated to remove the toner image from the transfer paper. And 0.10 g / A4 was applied thereto, and a reproduction process was performed. As a result, the toner image was completely removed, and no residual dyeing image was observed. When the reproduced transfer paper was reused by the above-described electrophotographic copying machine, an image equivalent to that when an image was formed on the paper before the reproduction was obtained. Further, when the above-described electrophotographic copying machine and reproducing apparatus repeated image formation and reproduction processing five times, an image equivalent to that obtained when an image was formed on paper before reproduction was obtained.

Example 3 Preparation of Electrophotographic Toner 3 Styrene-methacrylate resin 70 parts Polyester resin 30 parts Quaternary ammonium salt compound (BONTRON P-51, a colorless charge control agent manufactured by Orient Chemical Co.) 5 parts Carbon black ( (Colorant) 10 parts The above toner components were mixed, kneaded with a hot roll, pulverized and classified to prepare an electrophotographic toner 3 having an average particle size of 7.0 μm. The electrophotographic toner 3 and the image removal accelerating liquid 1 were mixed, ultrasonically dispersed at a temperature of 60 ° C., filtered, and the visible light absorption spectrum of the filtrate was measured. As a result, no coloring component was eluted. Electrophotographic copier (PPC copier sp
A toner image was formed on transfer paper (Type 6200, manufactured by Ricoh Company) using electrophotographic toner 3 with irio 7000 (manufactured by Ricoh Company). For the transfer paper having the toner image, using the reproducing apparatus shown in FIG. 1, 0.62 g / A4 of the image removal accelerating liquid 1 is applied, the transfer paper and the release member are brought into contact with each other, and heated and pressurized. After the toner image was removed from the transfer paper by separating from the release member, 0.13 g / A4 of the post-treatment liquid 1 was applied to the transfer paper, and a reproduction process was performed. As a result, the toner image was completely removed.
No dyeing afterimage was observed. When the reproduced transfer paper was reused by the above-described electrophotographic copying machine, an image equivalent to that when an image was formed on the paper before the reproduction was obtained. Also,
When the image formation and the reproduction processing were repeated five times by the above-described electrophotographic copying machine and the reproduction apparatus, an image equivalent to that when the image was formed on the paper before reproduction was obtained.

Example 4 Preparation of Electrophotographic Toner 4 Styrene-methacrylate resin 100 parts Quaternary ammonium salt organosilicon compound of the following structural formula (a) (colorless charge control agent) 5 parts

Embedded image Carbon black (colorant) 10 parts The above toner components were mixed, kneaded with a hot roll, pulverized and classified to prepare an electrophotographic toner 4 having an average particle size of 7.0 μm. The electrophotographic toner 4 and the image removal accelerating liquid 2 were mixed, ultrasonically dispersed at a temperature of 60 ° C., filtered, and the visible light absorption spectrum of the filtrate was measured. As a result, no coloring component was eluted. Electrophotographic copier (PPC copier sp
A toner image was formed on transfer paper (type 6200, manufactured by Ricoh Company) using electrophotographic toner 4 with irio 7000 (manufactured by Ricoh Company). For the transfer paper having a toner image, using the reproducing apparatus shown in FIG. 1, 0.58 g / A4 of the image removal accelerating liquid 2 is applied, the transfer paper and the release member are brought into contact with each other, and heated and pressurized. After the toner image was removed from the transfer paper by separating from the release member, 0.15 g / A4 of the post-treatment liquid 1 was applied to the transfer paper, and a reproduction process was performed. As a result, the toner image was completely removed.
No dyeing afterimage was observed. When the reproduced transfer paper was reused by the above-described electrophotographic copying machine, an image equivalent to that when an image was formed on the paper before the reproduction was obtained. Also,
When the image formation and the reproduction processing were repeated five times by the above-described electrophotographic copying machine and the reproduction apparatus, an image equivalent to that when the image was formed on the paper before reproduction was obtained.

Example 5 Preparation of Toner 5 for Electrophotography In Example 4, styrene-methacrylate resin 10 was used.
An electrophotographic toner 5 having an average particle size of 9.0 μm was prepared in the same manner as in Example 4, except that 55 parts of a styrene-methacrylate resin and 45 parts of a polyester resin were used instead of 0 parts. The electrophotographic toner 5 and the image removal accelerating liquid 2
And ultrasonically dispersed at a temperature of 60 ° C., and then filtered,
When the absorption spectrum of the filtrate in the visible region was measured, no coloring component was eluted. A toner image was formed on a transfer paper (type 6200, manufactured by Ricoh Co., Ltd.) using an electrophotographic toner 5 with an electrophotographic copier (PPC copier spiri7000, manufactured by Ricoh Company). For the transfer paper having the toner image, using the reproducing apparatus shown in FIG. 1, 0.52 g / A4 of the image removal accelerating liquid 2 is applied, the transfer paper and the release member are brought into contact with each other, and heated and pressurized. After the toner image was removed from the transfer paper by separating from the release member, 0.11 g / A4 of the post-treatment liquid 1 was applied to the transfer paper, and a reproduction process was performed. As a result, the toner image was completely removed. No dyeing afterimage was observed. When the reproduced transfer paper was reused by the above-described electrophotographic copying machine, an image equivalent to that when an image was formed on the paper before the reproduction was obtained.
Further, when the above-described electrophotographic copying machine and reproducing apparatus repeated image formation and reproduction processing five times, an image equivalent to that obtained when an image was formed on paper before reproduction was obtained.

Example 6 Preparation of Electrophotographic Toner 6 100 parts of polyester resin Aluminum salicylate complex compound (BONTRON E-88, manufactured by Orient Chemical, colorless charge control agent) 5 parts I. Pigment Blue 15 (colorant) 10 parts The above toner components were mixed, kneaded with a hot roll, pulverized and classified to prepare an electrophotographic toner 6 having an average particle size of 8.0 μm. Preparation of Electrophotographic Toner 7 100 parts of polyester resin Aluminum salicylate complex compound (BONTRON E-88, manufactured by Orient Chemical, colorless charge control agent) 5 parts I. Pigment Red 48 (colorant) 10 parts The above toner components were mixed, kneaded with a hot roll, pulverized and classified to prepare an electrophotographic toner 7 having an average particle size of 8.0 μm. Preparation of Toner 8 for Electrophotography 100 parts of polyester resin 5 parts of aluminum salicylate complex compound (BONTRON E-88, manufactured by Orient Chemical, colorless charge control agent) 5 parts I. Pigment Yellow 12 (colorant) 10 parts The above toner components were mixed, kneaded with a hot roll, pulverized and classified to prepare an electrophotographic toner 8 having an average particle size of 8.0 μm. Preparation of electrophotographic toner 9 Polyester resin 100 parts Aluminum salicylate complex compound (BONTRON E-88, manufactured by Orient Chemical, colorless charge control agent) 5 parts Carbon black (colorant) 10 parts After kneading, the mixture was pulverized and classified to prepare an electrophotographic toner 9 having an average particle size of 8.0 μm. Preparation of Image Removal Accelerator Solution 3 Dioctyl sodium sulfosuccinate (surfactant) 15% by weight Sodium dihexyl sulfosuccinate (surfactant) 10% by weight 2-methyl-2,4-pentanediol 8% by weight Sodium benzoate ( (Preservative) 0.1% by weight water Remaining amount The composition of the above formulation was dissolved by stirring to prepare an image removal accelerating liquid 3. The toner 6 for electrophotography, the toner 7 for electrophotography, the toner 8 for electrophotography, and the toner 9 for electrophotography were mixed with the image removal accelerating liquid 3 and ultrasonically dispersed at a temperature of 60 ° C., followed by filtration. When the absorption spectrum in the visible region was measured, no coloring component was eluted in any of the electrophotographic toners. Electrophotographic copier (digital color PP
Transfer paper (type 6) using electrophotographic toners 6, 7, 8 and 9 in a C copier PRETER500 (manufactured by Ricoh Company).
200, manufactured by Ricoh Co., Ltd.). For the transfer paper having a toner image, the image removal promoting liquid 3 was applied at 0.60 g / A4 using the reproducing apparatus shown in FIG.
By applying and applying heat and pressure to the transfer paper and the release member, and then separating the transfer paper and the release member,
After removing the toner image from the transfer paper, the post-treatment liquid 1 was applied to the transfer paper at 0.12 g / A4, and a reproduction process was performed. As a result, the toner image was completely removed, and no dyeing residual image was observed. . When the reproduced transfer paper was reused by the above-described electrophotographic copying machine, an image equivalent to that when an image was formed on the paper before the reproduction was obtained. Further, when the above-described electrophotographic copying machine and reproducing apparatus repeated image formation and reproduction processing five times, an image equivalent to that obtained when an image was formed on paper before reproduction was obtained.

Comparative Example 1 An aluminum salicylate complex compound was prepared by the following structural formula (b)
An electrophotographic toner was prepared in the same manner as the electrophotographic toner 1 except that the chromium-containing azo dye was used, and a regenerating process was performed in the same manner as in Example 1. As a result, the image forming substance was removed. A large afterimage of dyeing occurred.

Embedded image

Comparative Example 2 An electrophotographic toner was prepared in the same manner as in the electrophotographic toner 2 except that the poly-4-vinylphenol was replaced with a chromium-containing azo dye represented by the following structural formula (c). When the regenerating process was performed in the same manner, the image forming substance was removed, but a large residual dyeing image occurred.

Embedded image

[0060]

According to the present invention, an image formed on a recording material can be removed without damaging the recording material, and is included in the image forming material in the recording material after image removal. It is possible to reproduce a recording material capable of maintaining confidentiality without causing a colored afterimage (dying afterimage) due to a coloring component to be produced. Further, when an image is formed on the reproduced recording material, a good image can be formed, and the recording material can be repeatedly used for image formation and image removal.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view schematically showing an example of a recording material reproducing apparatus for performing a recording material reproducing method of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 paper feed unit 101 paper feed tray 102 paper feed roller 104 registration roller pair 2 image removal promoting liquid applying unit 201 image removal promoting liquid container 202 liquid remaining amount detecting means and liquid automatic replenishing means for liquid container 207 liquid pumping roller 208 liquid Coating roller 209 Pressing roller 3 Image removing unit 301 Heat lamp 302 Peeling roller 303 Peeling belt 304 Spiral roller 305 Image forming substance receiving container 4 Post-processing liquid applying unit 401 Post-processing liquid container 402 Liquid remaining amount detecting means and liquid to liquid container Automatic replenishing means 407 Liquid pumping roller 408 Liquid application roller 409 Holding roller 5 Drying finishing unit 501 Heating lamp 502 Drying drum 503 Finishing belt 6 Paper receiving unit 601 Output tray

Continued on the front page (72) Inventor Masahiro Yanagisawa 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company (72) Inventor Masakatsu Shimoda 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Company Inside

Claims (12)

[Claims] At least the vicinity of the surface on which an image is formed is constituted by a layer which swells with an image removal accelerating liquid, and an image formed of a thermoplastic or heat-fusible image forming substance is fixed to the layer in a film form. After applying the image removal accelerating liquid to the recording material, the recording material is brought into contact with the release member, and the image forming material on the recording material is adhered to the release member by heating or heating and pressing, and then In a recording material reproducing method for separating a recording material and a peeling member, transferring the image forming material from the recording material to the peeling member, and removing the image forming material from the recording material, the image forming material includes a surfactant and A color component that is difficult to dissolve in an image removal accelerating liquid containing water, and a colorless charge control agent are contained, and an image removal accelerating liquid containing a surfactant and water is used as the image removal accelerating liquid. Characteristic method of reproducing a recording material. 2. The method according to claim 1, wherein the image forming substance is an electrophotographic toner. 3. The method for reproducing a recording material according to claim 1, wherein the surfactant is an alkylsulfosuccinic acid compound. 4. A method for forming an image by using a thermoplastic or heat-fusible image-forming substance on the surface of a recording material comprising a layer swollen with an image removal accelerating liquid at least in the vicinity of the surface on which an image is formed. A method for repeatedly using a recording material in which an image forming material is removed from the recording material and the recording material is reused for forming an image after the formed recording material on which the image is formed is used as an information holding medium. In the above, an image is formed on the surface of the recording material by a coloring component that is difficult to dissolve in an image removal accelerating liquid containing a surfactant and water, and an image forming substance containing a colorless charge control agent, and the image is formed into a film. After applying an image removing accelerating liquid containing a surfactant and water to the surface of the fixed recording material, the recording material is brought into contact with a peeling member, and heated or heated and pressurized. Peel off the imaging substance The recording material is regenerated by adhering to the release member, separating the recording material and the peeling member, and transferring the image forming substance from the recording material to the peeling member, and reusing the reproduced recording material for image formation. A method for repeatedly using a recording material, which is characterized in that it is used. 5. The method according to claim 4, wherein the image forming substance is an electrophotographic toner. 6. The method according to claim 4, wherein the colorless charge control agent is a quaternary ammonium salt organosilicon compound represented by the following structural formula (a). Embedded image 7. The method according to claim 4, wherein the surfactant is an alkylsulfosuccinic acid compound. 8. An image forming material formed of a layer swelled with an image removal accelerating liquid at least in the vicinity of the surface on which an image is to be formed. An apparatus for repeatedly using a recording material that forms and uses the recording material on which an image is formed as an information holding medium, and then removes the image forming material from the recording material and reuses the recording material for image formation. In, means for forming an image by fixing a color component that is difficult to dissolve in an image removal accelerating liquid containing a surfactant and water, and an image forming substance containing a colorless charge control agent to a recording material in a film form, Means for applying a surfactant and water-containing image removal accelerating liquid to the surface of the recording material to which the image forming substance is fixed, and bringing the peeling member into close contact with the surface of the recording material to which the image removal accelerating liquid has been applied. means,
Means for heating or heating and pressing the adhered recording material and the peeling member to adhere the image forming substance on the recording material to the peeling member; separating the recording material and the peeling member to form an image on the recording material; An apparatus for repeatedly using a recording material, comprising: means for transferring a substance to a peeling member. 9. The recording material according to claim 8, further comprising means for applying water or an aqueous solution to the surface of the recording material from which the image forming substance has been transferred to the peeling member and from which the image forming substance has been removed. Repeated use device. 10. The repetitive use of a recording material according to claim 8, further comprising means for drying and finishing the recording material from which the image forming material has been transferred to the peeling member and from which the image forming material has been removed. apparatus. 11. An electrophotographic toner comprising a coloring component that is difficult to dissolve in an image removal accelerating solution containing a surfactant and water, and a colorless charge control agent. 12. A recording material obtained by the reproducing method according to claim 1, having no colored afterimage.