JPH07121071A - Reproducing device for recording medium - Google Patents

Abstract

PURPOSE:To prevent the vapor of cleaning solution from being released to the air as it is and to keep working environment excellent. CONSTITUTION:This is a reproducing device 1 eliminating a printing material M such as toner from a recording medium S such as a paper or an OHP film on which an image is printed. The reproducing device 1 is provided with the housing means 9 of the cleaning solution W swelling or dissolving the material M, an application means 16 applying the solution W to the material M by the method of immersion or application, a brush roller 19 eliminating the swollen or dissolved material M from the medium S, a heating roller pair 29 drying the medium S from which the material M is eliminated and a recovery device 40 recovering the vapor generated when the medium S is dried.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium reproducing apparatus for removing a printing material by applying a special liquid to a recording medium such as paper on which an image is formed by an image forming apparatus such as a copying machine or a printer.

[0002]

2. Description of the Related Art Conventionally, as a reproducing apparatus for removing toner from a recording paper image-printed by an image forming apparatus such as a copying machine,
A wet method in which a recording paper is immersed in a dispersant to release and remove a toner image is disclosed in JP-A-5-173454.

[0003]

By the way, in the reproducing apparatus of the wet type, the recording paper from which the toner has been removed contains a large amount of dispersant, and this is heated and dried to remove water (dispersant). Must. However, if all of the water content contained in the recording paper is vaporized and released into the atmosphere, there arise problems that the working environment is deteriorated and that the dispersant must be replenished frequently.

[0004]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above problems and providing a novel reproducing apparatus. The reproducing apparatus removes printing material from a recording medium on which an image is printed. In, a liquid containing means for swelling or dissolving the printing material, applying means for applying the liquid to the printing material, removing means for removing the printing material swollen or dissolved by the liquid from the recording medium, and the printing material A drying means for drying the removed recording medium and a collecting means for collecting the vapor generated when the recording medium is dried are provided. In addition, it is preferable that the regenerator is provided with a returning means for extracting the liquid component of the vapor recovered by the recovering means and returning it to the accommodating means.

[0005]

In the reproducing apparatus, the liquid in the containing portion is applied to the printing material for the recording medium on which the image is printed. This application method may be either dipping or coating. The printing material to which the liquid is applied swells or dissolves, and is ready to be easily removed from the recording medium.
It is removed from the recording medium by the removing means. The recording medium from which the printing material has been removed is then dried by the drying means. And
The steam generated at this time is recovered by the recovery means. Also,
In the case of having a return means, a liquid component is extracted from the recovered vapor and sent back to the liquid storage means for reuse. Therefore, the steam is not released into the atmosphere as it is, and the working environment is kept good. Further, in the case where the returning means is provided, the liquid consumption amount is reduced, and the liquid supply frequency and the liquid supply amount can be reduced.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Figure 1 shows the paper or OHP on which the image is printed.
1 shows an overall wet-type reproducing apparatus for removing a printing material such as toner from a recording medium such as a film and reproducing the recording medium in a reusable state. The reproducing apparatus 1 is preferably provided with a box-shaped housing 2, and the recording medium is loaded into and discharged from the side walls 3 and 4 on the loading side (left side in the figure) and the discharge side (right side in the figure) of the housing 2, respectively. Opening portions 5 and 6 are formed, and a charging roller pair 7 and a discharging roller pair 8 are arranged near the respective opening portions.

Inside the housing 2, an upper open type liquid container 9 for containing a cleaning liquid W for removing the printing material M from the recording medium S is housed. The cleaning liquid W is a liquid that swells or dissolves a printing material such as toner, and an example thereof will be described in detail later. In the container 9, an inclined guide plate 10 for guiding the recording medium S introduced into the housing 2 by the charging roller pair 7 into the cleaning liquid W from the charging side. Roller pair 1 that further conveys the recording medium S that has been conveyed to the discharge side
1. A guide plate 12 for orienting the recording medium S that has passed through the roller pair 11 in a horizontal direction, a belt 15 wound around a pair of rollers 13 and 14 facing each other on a horizontal plane, and the recording medium S in the cleaning liquid W. A first conveyor 16 that conveys in the horizontal direction, a pair of guide plates 17 and 18 that guide the recording medium S sent from the first conveyor 16, and a pair of guide plates 17 and 18 that face each other across a recording medium conveyance path. , A pair of brush rollers 19 and three rollers 20, 21, 22 arranged so that their outer peripheral ends are in light contact with each other.
A second conveyor 24 is provided around which the belt 23 is wound and the recording medium S conveyed on the guide plate 18 is taken out from the cleaning liquid W.

Above the discharge side of the container 9, three guide plates 25, 26, 27 for guiding the recording medium S taken out of the cleaning liquid W by the second conveyor 24 toward the discharge roller pair 8, A squeezing roller pair 28 which opposes the recording medium conveyance path between the guide plates 25 and 26 in the vertical direction and squeezes out the cleaning liquid W impregnated in the recording medium S.
A heating roller pair 29 is provided between the guide plates 26 and 27 so as to face each other across the recording medium conveyance path and to heat and dry the wet recording medium S to a reusable wet state.

The apparatus for heating and drying the recording medium S is not limited to the heating roller pair 29, and for example, as shown in FIG. 2, a breathable belt wound around a plurality of rollers 51 and 52, for example, a mesh belt. It may be a pair of electric heaters 54 and 55 that face each other via 53, or as shown in FIG. 3, inside or outside a breathable belt 59 wound around a plurality of rollers 56, 57 and 58. It may be the hot-air type moisture evaporator 60 arranged.

The heating roller pair 29 is covered by a box 30 so as to be substantially sealed. Above the inside of the box 30, vapor generated when the recording medium S in a wet state is heated and the cleaning liquid W are discharged. A suction fan 31 for sucking the vapor and a recovery device 40 for absorbing and recovering the moisture of the vapor discharged from the suction fan 31 are provided. Inside the recovery device 40, as shown in FIG. 4, disks 402, 403 are provided at both ends of four columns 401.
The recovery means 400 is provided in the space surrounded by the support column 401 and the disks 402, 403 by incorporating a plurality of materials 404 for adsorbing moisture or the like on the outer circumference. Collection means 4
00 is rotatably provided by a motor (not shown),
After it is detected by the operator's command or a timer (not shown) that the reproduction process has elapsed for a certain period of time, it automatically rotates. Therefore, the water content or the like adsorbed on the material 404 is discharged to the inner wall of the recovery device 40 by the centrifugal force, is transmitted through the exhaust port 33, and is recovered in the container 9.

As the collecting means 400, the one shown in FIG. 5 can also be used. In this case, the container 410 is divided into small chambers 412 by a plurality of partition walls 411, and each small chamber 412 is provided with an accordion type curtain 414 that expands and contracts along a guide rod 413.
A gas-permeable elastic material 415 made of the adsorbent or containing the adsorbent is filled in the gap between the four. Therefore,
The vapor supplied from the suction fan 31 is a breathable elastic material 41.
5, the water and odors are taken away and discharged from the exhaust port 33. The water adsorbed by the adsorbent is discharged along the guide rod 413 by compressing the expansion member 415 and the adsorbent by shrinking the curtain 414 by a pressing means (not shown), and the discharged water is exhausted. It is sent back to the container 9 through 33.

Examples of the water-absorbing materials 404 and 415 include, for example, synthetic zeolite (trade name: Zeostar; manufactured by Nippon Kagaku Kogyo Co., Ltd.), cellulose beads (manufactured by Nisshinbo Co., Ltd.), water adsorption resin (trade name: Aquaric AC; Japan Catalysts, product name Sakuris; Sanyo Kasei Co., Ltd.), moisture adsorption film (Mitsubishi Plastics Co., Ltd.). Examples of materials that absorb odor include activated carbon (trade name: Granular Shirataka; manufactured by Takeda Pharmaceutical Co., Ltd.), carbon fiber (trade name: K filter; manufactured by Toyobo Co., trade name: Besfite: manufactured by Toho Rayon Co., Ltd.). .

In the reproducing apparatus 1 having the above structure, the recording medium S supplied into the housing 2 by the charging roller pair 7 is introduced into the cleaning liquid W along the guide plate 10, and the second roller pair is introduced. It is sent to the guide plate 12 by the reference numeral 11, is further conveyed to the discharge side by the first conveyor 16, and is conveyed to the opposing area of the brush roller pair 19 via the guide plate 17. In the recording medium S transported to the position of the brush roller pair 19, the printing material M has already swelled or dissolved in the process of being transported in the cleaning liquid W, and the printing material can be easily printed by applying a physical force. M is ready for removal. Therefore, the printing material M is removed by rubbing the upper surface and the lower surface of the recording medium S passing between the brush roller pair 19 by the brush roller pair 19. The brush roller pair 19 is preferably rotated at the contact portion with the recording medium S so that the brush tip moves in the transport direction. In this case, the brush roller pair 19 is rotated.
The moving speed of the leading end portion is set higher than the belt moving speed of the conveyor 16, and the brush material 19 is used to scrape the printing material M positively.

The recording medium S from which the printing material M has been removed is the second
The cleaning liquid W is taken out from the cleaning liquid W by the conveyor 24 and conveyed to the discharge side on the guide plate 25, and is pressed from above and below by the pressing roller pair 28 to squeeze the cleaning liquid W. Next, the recording medium S passes through the guide plate 26, is heated from above and below by the heating roller pair 29, and is ejected to the outside by the ejection roller pair 8 through the guide plate 27 in a substantially dry state.

From the vapor of the cleaning liquid W generated when the recording medium S is heated by the heating roller pair 29, the vapor generated by the evaporation of the cleaning liquid W, and the cleaning liquid W impregnated during the conveyance process of the recording medium S. The generated steam is sucked by the suction fan 31. Suction fan 3
The steam introduced into 1 is sent to the recovery device 40, where the water separated and recovered from the steam is sent back to the container 9 through the exhaust port 33, and the odor is adsorbed and removed by the suction material.

In the above description, the recording medium S is immersed in the cleaning liquid W to remove the printing material M. However, the cleaning liquid W is applied to the cleaning liquid W by using a coating means such as a brush, a roller or a spray. It may be applied to M.

The cleaning liquid used in the present invention is not particularly limited, but preferably the cleaning liquid contains water and a swelling agent which is compatible with water and swells the printing material. When the recording medium or the like is plain paper or the like, the water has a function of swelling the pulp fibers of the paper and efficiently adsorbing the printing material, for example, the toner made of resin particles, which has entered the mesh structure, to the brush roller. The content of water is 10 to 90% by weight, preferably 20 to 88% by weight, based on the entire cleaning liquid. However, if the water content is less than 1% by weight, the effect of spreading the fibers may not be sufficient. On the contrary, when the content of water is too large, the time for swelling the toner and the like becomes long, the time required for cleaning greatly increases, and the cleaning processing efficiency per unit time decreases. Although it depends on the kind of toner, if the amount of water exceeds 90% by weight, the cleaning time will be drastically increased, which is not preferable. In this way, when the amount of water is large, the binding force (hydrogen bond) between the paper fibers is weakened, and the paper surface is damaged when cleaning is performed by adding physical treatment, and in severe cases, the paper fibers are The water content is preferably 30 to 85% by weight because the paper may be broken and the paper may be broken. In addition, since the cleaning liquid contains water, the boiling point is increased and the nonvolatility is improved as compared with the conventional organic solvent deinking agent. As a result, the generation of toxic gas is reduced, the toxicity becomes low, the flammability is lowered, and the concentration of the other components of the cleaning liquid is stabilized, and the quality of the cleaning liquid is unlikely to change.

The swelling agent contained in the cleaning liquid basically does not dissolve the toner resin component of the toner fixed on the paper or the OHP film, the dye component such as the charge control agent, and the colorant component such as the facial dye. However, it is essential to mainly swell the resin component to make the toner a gel-like plastic polymer, and to make it easier to adsorb to the brush roller. As such a component, specifically, a component containing at least a higher fatty acid ester, water and a surfactant, and further an organic acid is preferable.

Although the function of this component is not always clear, when the printed recording medium is immersed in the cleaning liquid, the function of the swelling agent causes the paper or OH to react.
The resin component of the toner fixed on the P film absorbs the swelling agent, and changes into a highly plastic viscous gel polymer that extends 0.5 mm to several cm. This viscous gel-like polymer has a significantly reduced binding force to paper fibers and OHP film, and is easily removed by applying a little physical (mechanical) stress, adsorbed to a brush roller and cleaned. I found a thing. The cleaning action depends on the pH of the liquid, and particularly when the toner resin is a polyester resin, the ester bond is broken and decomposed into a fine powder by making the pH of the liquid weakly alkaline around 8 to 10. It is easy to be beaten. Furthermore, the cleaning action depends on the temperature of the liquid. Therefore, these should be combined to determine the pH and temperature of the liquid, but the pH is 3.0.
~ 11.0, it is preferable to adjust the liquid temperature in the range of 20 ~ 60 ℃. In order to obtain a stable cleaning effect, it is more preferable to maintain the pH at an optimum constant value by using various pH buffer solutions and the like. Weakly acidic with a pH of 3.0 or less, or 1
Under a strong alkalinity of 1.0 or more, the swelling action and the peeling action of the toner resin by the swelling agent also decrease. Further, when the liquid temperature is 20 ° C. or lower, the swelling action of the swelling agent also decreases, and it is difficult to obtain sufficiently practical cleaning efficiency. further,
When the liquid temperature is 60 ° C. or higher, the liquid evaporates severely, and the heating power becomes too large, resulting in poor economy.

The fatty acid of the higher fatty acid ester is a saturated or unsaturated fatty acid such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid,
Linoleic acid, erucic acid, ricinoleic acid, abietic acid,
Examples include rosin acid, coconut oil, linseed oil, beef tallow, whale oil and the like. The higher fatty acid ester is a fatty acid and a hydroxy compound, for example, alcohols such as ethanol and n-butanol, polyhydric alcohols such as ethylene glycol and glycerin pentaerythritol sorbitol, glycols such as diethylene glycol, dipropylene glycol and polyethylene glycol, and ethyl. It refers to an ester with cellosolves such as cellosolve and butyl cellosolve, and tall oil fatty acid ester is particularly preferable.

Tall oil fatty acid means that it contains oleic acid and linoleic acid in a ratio of about 6: 4, and in addition, palmitic acid, stearic acid, and a small amount of unsaponifiable matter. As the alcohol for esterifying tall oil fatty acid, ethylene glycol, polyethylene glycol, ethoxyethanol, butoxyethanol, etc., preferably butoxyethanol, ethylene glycol, ethoxyethanol are used. Further, the cleaning liquid of the present invention preferably contains a surfactant. The surfactant surrounds the printing material made of the organic component such as the cleaned resin component, and the swollen printing material does not fuse with the brush roller to ensure releasability. Alternatively, when the recording medium is a plain paper or the like, it also has an effect of entering the inside of the mesh structure of the paper to enclose the printing material, and facilitating the adsorption of the printing material, which penetrates deep into the fiber, to the brush roller.

In the cleaning liquid, the higher fatty acid ester accounts for 60 to 5% by weight, preferably 40% of the total amount of the cleaning liquid.
Used in the range of up to 20% by weight. If it is used in an amount of more than 60% by weight, the solubility in the toner is high and it becomes difficult to adsorb,
If it is used in an amount less than 5% by weight, the swelling property to the toner will be poor and the adsorbing power to the brush roller will be reduced, resulting in a small cleaning effect.

Further, it is desirable that the cleaning liquid contains a surfactant. As the surfactant, anionic surfactant, nonionic surfactant, cationic surfactant and amphoteric surfactant can be used. Examples of the anionic surfactant include fatty acid salts, alkyl sulfate ester salts, alkylbenzene sulfonates, alkylnaphthalene sulfonates, alkylsulfosuccinates, alkyldiphenyl ether disulfonates,
Examples thereof include alkyl phosphates, polyoxyethylene alkyl sulfate ester salts, naphthalene sulfonic acid formalin condensates, and polycarboxylic acid polymer surfactants.

As the nonionic surfactant, polyoxyethylene alkyl ether, polyoxyethylene alkyl allyl ether, oxyethylene-oxypropylene copolymer, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, glycerin. Examples thereof include fatty acid esters and polyoxyethylene alkylamines.

As the ionic surfactant and amphoteric surfactant, alkylamine salts, quaternary ammonium salts,
Examples include alkyl betaine and amine oxide.
A particularly preferred surfactant has the chemical formula: RO (CH ₂ CH ₂
O) nH (wherein R represents a C _{12 to} C ₂₂ alkyl group or an alkylphenyl group, n represents an integer of 1 to 10), and is an ethylene oxide addition-type nonionic surfactant. The above surfactants can be used alone or as a mixture of two or more kinds. Moreover, it is desirable that the amount of addition thereof be approximately 0.01 to 10% by weight with respect to the entire cleaning liquid. If it is less than 0.01% by weight, the deinked toner is apt to be fused to the brush roller. Also,
If it is more than 10% by weight, the adsorptivity to the brush roller is lowered.

Further, the cleaning liquid preferably contains an organic acid. When the printing material contains a resin component, the cleaning liquid needs to penetrate into the toner resin. The present inventors have found that organic acids enhance this penetration effect. Further, the cleaning time can be shortened by improving the penetration effect. Organic acids that are preferably added are various carboxylic acids, such as formic acid, acetic acid, propionic acid, butyric acid, isobutyric acid, pivalic acid, methacrylic acid, acrylic acid, lactic acid, oxalic acid, tartaric acid, and benzoic acid, or two types. The above mixtures can be mentioned. The amount of these organic acids added is preferably about 2 to 15% by weight based on the entire cleaning liquid. If it is less than 2% by weight, the deinking rate may be low, and if it is more than 15% by weight, the residual organic acid may act on the recording medium to cause deterioration in quality.

Further, the cleaning liquid may be, for example, methanol, ethanol or n as long as the effect of the present invention is not impaired.
-Butanol, isopropanol, ethoxyethanol, etc., and xylene, toluene, acetone, T
An organic solvent that swells the toner, such as a mixture of HF, dioxane, and dichloromethane, may be contained.

Tosclean D (manufactured by Chosou Sangyo Co., Ltd.) is available as such a cleaning liquid. Tos Screen D is a water-based detergent with an acid value of about 2.1 mgKOH /
g, specific gravity: 1.020 (20 ° C.), pH: 7 ± 0.5
It is a pale yellow transparent liquid having physical properties of (15 ° C).
This cleaning liquid does not contain any compounds of fluorine and chlorine carbon, which are pointed out to destroy the ozone layer,
It can be used without deteriorating the global environment. Further, since it has low toxicity to human body and is nonflammable (no flash point), it is extremely suitable for use in a paper recycling apparatus in a normal office environment like the present invention.

The recording medium to which the cleaning liquid is applied is not particularly limited, but in addition to resin film (OHP paper) and the like, paper such as plain paper or recycled paper having a mesh structure, which has been difficult to clean conventionally as described above. The cleaning effect is remarkable. Similarly, the printing material that is the target of the cleaning liquid of the present invention is not limited to water-soluble, oil-soluble ink, red ink, markers, etc., but especially for toner particles containing a resin component that has been conventionally difficult to clean. Also has an excellent cleaning effect.

In the present invention, as a printing material, conventionally known toner can be cleaned without limitation, but as the resin component to be used, for example, styrene resin, acrylic resin, methacrylic resin, styrene-acrylic resin can be used. Examples thereof include thermoplastic resins and thermosetting resins such as polymerized resins, styrene-butadiene copolymer resins, polyester resins, and epoxy resins. Alternatively, a copolymer, a block polymer, a graft polymer composed of two or more of these resins may be used, or a mixture of these resins may be used.
In such a resin, the number average molecular weight M
n is 1000 ≦ Mn ≦ 20000, preferably 200
0 ≦ Mn ≦ 15,000 and the weight average molecular weight Mw is 2
It is desirable to use one having ≦ Mn ≦ 80. Further, it is preferable to use a resin having a glass transition point of 55 to 70 ° C. and a softening point of 80 to 140 ° C.

As the colorant, various known pigments and dyes can be used. However, if a dye is used as a colorant, the dye may start to dissolve in the deinking agent and re-adhere to the recording medium, reducing the cleaning effect. Such inconvenience is not a serious problem when a resin film or the like is used as a recording medium, but becomes a very serious problem when a paper having a mesh structure is used. Therefore, it is desirable to use a pigment as the colorant of the toner to be cleaned so that the colorant does not melt during cleaning. As such a coloring pigment, carbon black, copper oxide, manganese dioxide, aniline black, activated carbon, ferrite, magnetite or the like can be used as a black pigment.

The yellow pigments include yellow lead, zinc yellow, cadmium yellow, yellow iron oxide, mineral fast yellow, nickel titanium yellow, navel yellow, naphthol yellow S, bunzer yellow G, bunzer yellow 10G, benzidine yellow G, Benzidine yellow GR, quinoline yellow lake, permanent yellow NCG, tartrazine lake, etc. can be used.

Examples of red pigments include red yellow lead, molybdenum orange, permanent orange GTR, pyrazolone orange, vulcan orange, induslen brilliant orange RK, benzidine orange G, induslen brilliant orange GK, red iron oxide, cadmium red and red lead. , Permanent Red 4R, Resole Red,
Pyrazolone Red, Watching Red, Lake Red C, Lake Red D, Brilliant Carmine 6B, Eosin Lake, Rhodamine Lake B, Alizarin Lake,
Brilliant Carmine 3B, Balkan Fast Orange GG, Permanent Red F4RH, Permanent Carmine FB, etc. can be used.

Examples of blue pigments include navy blue, cobalt blue, alkali blue lake, Victoria blue lake,
Phthalocyanine blue or the like can be used. These pigments or colorants are used as the resin component 10 in the toner.
It is desirable to add 1 to 20 parts by weight, preferably 3 to 15 parts by weight, relative to 0 parts by weight.

The toner may include a charge control agent. As the positive charge control agent for positively charging the toner, nigrosine base EX, quaternary ammonium salt, polyamine compound, imidazole compound and the like can be used. As the negative charge control agent for negatively charging the toner, chromium complex salt type azo dye, copper phthalocyanine dye, chromium complex salt, zinc complex salt, aluminum complex salt and the like can be used.

These charge control agents are added in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the resin component in the toner.
It is preferable to add 0.5 to 5 parts by weight. In addition, the above-mentioned various charge control agents can be used. However, when a dye-based dye is used as the charge control agent, the dye may be dissolved in the cleaning liquid and redeposited on the recording medium from the transfer body, as described for the colorant, and the cleaning effect may be reduced. Therefore, it is desirable to use a non-dye-based charge control agent for the toner to be cleaned, or to have a configuration that does not include a charge control agent at all. Alternatively, it is preferable to use a colorless or white charge control agent even if it melts. Alternatively, it is preferable that the resin of the toner has a polar group or a functional group, and the resin component itself is configured as a charge control resin having a charge control function.

The toner may contain an anti-offset agent. As the anti-offset agent, a low molecular weight polyethylene wax, a low molecular weight oxidized polyethylene wax, a low molecular weight polypropylene wax, a low molecular weight oxidized polypropylene wax, a higher fatty acid wax, a higher fatty acid ester wax, a sazol wax, or the like, or 2
It can be used as a mixture of two or more species. It is desirable to add 1 to 15 parts by weight, preferably 2 to 8 parts by weight, of these offset preventing agents to 100 parts by weight of the resin component in the toner. Further, the toner according to the present invention may be configured as a magnetic toner. Magnetic toner
Cobalt, iron, nickel, aluminum,
Lead, magnesium, zinc, antimony, beryllium, bismuth, cadmium, calcium, manganese, selenium,
Metals showing magnetism such as titanium, tungsten, vanadium, oxides and sintered bodies of these metals, and 2 of these metals
It is constituted by adding an alloy of at least one kind or a mixture of these metals, oxides, sintered bodies, alloys and the like.

It is desirable to add 1 to 80 parts by weight, preferably 5 to 60 parts by weight, of these magnetic materials to 100 parts by weight of the resin component in the toner. Further, the toner according to the present invention may contain a fluidizing agent. As the fluidizing agent, silica fine particles, titanium oxide fine particles, alumina fine particles, magnesium fluoride fine particles, silicon carbide fine particles, boron carbide fine particles, titanium carbide fine particles,
Various inorganic material particles such as zirconium carbide particles, titanium nitride particles, zirconium nitride particles, magnetite particles, molybdenum difluide particles, aluminum stearate particles, magnesium stearate particles, and zinc stearate particles can be used. It should be noted that these fine particles of inorganic material are preferably used after being hydrophobized with a silane coupling agent, a titanium coupling agent, a higher fatty acid, silicone oil or the like.

Further, styrene-based, acrylic-based, methacrylic-based, benzoguanamine, silicone, Teflon, polyethylene, polypropylene, etc. granulated by a wet polymerization method such as emulsion polymerization, soap-free emulsion weight, non-aqueous dispersion polymerization or a gas phase method. Various organic materials can be used. And it can also be used in combination with the above-mentioned inorganic material fine particles.
These fluidizing agents are used in an amount of 0.05 to 5 parts by weight, preferably 0.1 to 100 parts by weight of the resin component in the toner.
It is desirable to add 1 to 3 parts by weight.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a schematic configuration of a reproducing device.

FIG. 2 is a sectional view showing another embodiment of the heating and drying apparatus.

FIG. 3 is a sectional view showing another embodiment of the heating and drying device.

FIG. 4 is a perspective view of an apparatus for adsorbing moisture or the like inside the recovery apparatus.

FIG. 5 is a cross-sectional view showing another embodiment of the recovery device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Regeneration device, 9 ... Container, 16, 24 ...
9 ... Brush roller, 28 ... Compression roller, 29 ... Heating roller pair, 31 ... Suction fan, 40 ... Collection device, 33 ... Exhaust port.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location G03G 21/10

Claims (2)

[Claims] 1. A reproducing apparatus for removing a printing material from a recording medium on which an image is printed, a liquid containing means for swelling or dissolving the printing material, an applying means for applying the liquid to the printing material, and the liquid. A removing means for removing the printing material swollen or dissolved by the recording medium from the recording medium, a drying means for drying the recording medium from which the printing material has been removed, and a collecting means for collecting vapor generated when the recording medium is dried. A reproducing apparatus for a recording medium characterized by the above. 2. The reproducing apparatus for a recording medium according to claim 1, wherein the reproducing apparatus includes a returning means for extracting the liquid component of the vapor recovered by the recovering means and returning it to the containing means. .