WO2019022025A1 - 導電性ウレタンフォーム及びトナー供給ローラ - Google Patents
導電性ウレタンフォーム及びトナー供給ローラ Download PDFInfo
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- WO2019022025A1 WO2019022025A1 PCT/JP2018/027558 JP2018027558W WO2019022025A1 WO 2019022025 A1 WO2019022025 A1 WO 2019022025A1 JP 2018027558 W JP2018027558 W JP 2018027558W WO 2019022025 A1 WO2019022025 A1 WO 2019022025A1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0818—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the structure of the donor member, e.g. surface properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
- C08J9/42—Impregnation with macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/12—Polysiloxanes containing silicon bound to hydrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
Definitions
- the present invention relates to a conductive urethane foam and a toner supply roller.
- a developing unit in an electrophotographic image forming apparatus such as a copying machine or a printer includes an image forming member 11 such as a photosensitive member holding an electrostatic latent image, and the image forming member A developing roller 12 for visualizing an electrostatic latent image by adhering a toner 20 carried on the surface in contact with the surface 11 and a toner supply roller 13 for supplying the toner to the developing roller 12 are provided.
- the image formation is performed by a series of processes in which the toner 15 is transported from the toner storage unit 14 to the image forming body 11 via the toner supply roller 13 and the developing roller 12.
- the toner supply roller 13 does not damage the developing roller 12 in contact, and increases the contact area of the roller to ensure grip, etc.
- the structure which formed electroconductive elastic bodies, such as a urethane foam, is mentioned.
- the functions required of the toner supply roller 13 include toner transportability, toner chargeability, and the like, and various measures have been taken to satisfy these functions.
- Patent Documents 1 to 3 the electric resistance of the toner supply roller is lowered by impregnating the polyurethane foam constituting the toner supply roller with a conductive processing liquid such as conductive carbon black, and the toner charge amount (Q A technology is disclosed that makes it possible to drop / M) and increase the toner transport amount (M / A).
- a conductive processing liquid such as conductive carbon black
- Q A technology is disclosed that makes it possible to drop / M
- M / A toner transport amount
- urethane foam is all impregnated with a conductive material, the influence of charging due to the friction between the toner supply roller 13 and the toner on the toner supply roller and the developing roller is sufficient. There is a problem that a good image can not be obtained stably for a long time.
- Patent Document 4 the influence of the charging due to the friction with the toner on the toner supply roller and the developing roller is sufficiently prevented, the stable charge imparting effect is enhanced, and a good image is obtained (the stability of the roller is improved).
- Urethane foam and toner supply rollers impregnated with a binder resin having a conductive agent on the same or positive side in the charge train than the urethane foam substrate in the surface layer have been developed for the purpose.
- Patent Document 4 makes it possible to enhance the stable charge imparting effect and obtain a good image.
- the urethane foam impregnated with the binder resin tends to have a higher hardness and a lower impact resilience after being impregnated with the binder resin, and thus further improvement is desired in that respect.
- an object of the present invention is to provide a conductive urethane foam which can suppress changes in hardness and impact resilience before and after impregnation of a binder resin while having a stable charge imparting effect.
- Another object of the present invention is to provide a toner supply roller having a high charge imparting effect and excellent stability.
- the inventor of the present invention has found that a stable chargeability can be obtained by forming a conductive urethane foam in which a binder resin containing a conductive agent is impregnated in the surface layer of the urethane foam substrate. It is found that the effect of imparting can be obtained, and by optimizing the kind of binder resin, changes in hardness and impact resilience before and after impregnation of the binder resin can be more effectively suppressed as compared with the prior art.
- the conductive urethane foam of the present invention is a conductive urethane foam formed by impregnating a surface layer of a urethane foam substrate with a binder resin containing a conductive agent, and the binder resin contains a silicone resin. It is characterized by being characterized.
- the content of the silicone resin in the conductive urethane foam is 0.3 to 6.0 parts by mass with respect to 100 parts by mass of the urethane foam substrate. Is preferred. This is because changes in hardness and impact resilience before and after impregnation of the binder resin can be further reduced.
- the conductive agent is preferably ketjen black, and the content of the ketjen black in the conductive urethane foam is 100 parts by mass of the base material of the urethane foam.
- the amount is more preferably 0.45 to 9.0 parts by mass. This is because changes in hardness and impact resilience before and after impregnation of the binder resin can be further reduced.
- the silicone resin is preferably at least one selected from the group consisting of peroxide cured silicones, condensation-type thermosetting silicones, addition-type thermosetting silicones, and cationic UV-curable silicones. This is because changes in hardness and impact resilience before and after impregnation of the binder resin can be further reduced.
- the toner supply roller of the present invention is characterized by using the above-described conductive urethane foam of the present invention. By providing the above configuration, high charging effect and excellent stability can be realized.
- the electroconductive urethane foam which can suppress the change of the hardness and impact resilience before and behind impregnation of a binder resin can be provided, having a stable charging property provision effect. Further, according to the present invention, it is possible to provide a toner supply roller having a high charge imparting effect and excellent stability.
- FIG. 1 is a partial cross-sectional view schematically showing an example of an image forming apparatus.
- FIG. 2 is a cross-sectional view schematically showing an embodiment of a toner supply roller of the present invention.
- the conductive urethane foam of the present invention is formed by impregnating a surface layer of a urethane foam substrate with a binder resin containing a conductive agent.
- a binder resin containing a conductive agent By impregnating the surface layer of the urethane foam substrate with a binder resin containing a conductive agent, the chargeability imparting effect can be stably exhibited, and a good image can be obtained.
- urethane foam base There is no particular limitation on the urethane foam substrate constituting the conductive urethane foam of the present invention, and a known urethane foam can be appropriately used according to the application and purpose.
- a compound having two or more active hydrogens and a compound having two or more isocyanate groups are stirred and mixed with additives such as a catalyst, a foaming agent, a foam stabilizer, etc. It can be manufactured by curing.
- additives such as a catalyst, a foaming agent, a foam stabilizer, etc.
- a foaming agent can be mixed, foamed, and left to stand.
- single diol is used to mean one or more diols having an average molecular weight difference of 400 or less.
- average molecular weight difference refers to the difference between the average molecular weights of the targeted diols, and when there are many types of combinations, it is used to mean, in particular, the maximum difference.
- polystyrene resin for example, a polyether polyol obtained by addition polymerization of ethylene oxide and propylene oxide, a polytetramethylene ether glycol, a polyester polyol obtained by condensing an acid component and a glycol component, and caprolactone are opened.
- a ring-polymerized polyester polyol, polycarbonate diol or the like can be used.
- examples of the polyether polyol used when producing the urethane foam substrate include (A) polyether polyol of a type in which only propylene oxide is added to diethylene glycol, and (B) propylene glycol to (B) diethylene glycol And polyether polyols of the type in which oxide and ethylene oxide are added in a block or random manner, and (C) polyether polyols of the type in which acrylonitrile or styrene is grafted onto (A) or (B). .
- Examples of the initiator used to produce the polyether polyol include polyhydric alcohols, polyhydric phenols, mono or polyamines, and the like, but preferred are polyhydric alcohols and polyhydric phenols, and more preferable.
- the polyether polyol component may also contain a polyol component other than a diol.
- a polyol component a trifunctional one usually used for producing a urethane foam base, for example, one obtained by adding an alkylene oxide such as propylene oxide to glycerin base, or two types such as propylene oxide and ethylene oxide What added the alkylene oxide of at random or block etc. is mentioned,
- the polyether polyol which added the same thing as the above to sucrose base etc. are mentioned as a polyfunctional thing, etc., for example.
- polyether polyols obtained by addition polymerization of ethylene oxide and propylene oxide include water, propylene glycol, ethylene glycol, glycerin, trimethylolpropane, hexanetriol, triethanolamine, diglycerin, pentaerythritol, ethylenediamine, methyl glucoside,
- aromatic diamines, sorbitol, sucrose, phosphoric acid and the like, and addition polymerization of ethylene oxide and propylene oxide can be mentioned, but in particular, water, propylene glycol, ethylene glycol, glycerin, trimethylolpropane Preferred are those having hexanetriol as a starting material.
- the ratio of ethylene oxide to propylene oxide to be added and the microstructure is preferably 2 to 95% by mass, more preferably 5 to 90% by mass, and ethylene oxide is added at the end preferable.
- the arrangement of ethylene oxide and propylene oxide in the molecular chain is preferably random.
- the molecular weight of such polyether polyol is bifunctional when water, propylene glycol or ethylene glycol is used as the starting material, and the weight average molecular weight is preferably in the range of 300 to 6000, preferably in the range of 3000 to 5000. Is more preferred.
- glycerin, trimethylolpropane or hexanetriol is used as the starting material, it is trifunctional and preferably has a weight average molecular weight in the range of 900 to 9000, and more preferably 4000 to 8000.
- a bifunctional polyol and a trifunctional polyol can be appropriately blended and used.
- polytetramethylene ether glycol can be obtained, for example, by cationic polymerization of tetrahydrofuran, and those having a weight average molecular weight in the range of 400 to 4000, particularly in the range of 650 to 3000 are preferably used. It is also preferable to blend polytetramethylene ether glycols of different molecular weights. Furthermore, polytetramethylene ether glycol obtained by copolymerizing alkylene oxides such as ethylene oxide and propylene oxide can also be used.
- polytetramethylene ether glycol and a polyether polyol obtained by addition polymerization of ethylene oxide and propylene oxide it is preferable to use such a blend ratio in the range of 95: 5 to 20:80, particularly in the range of 90:10 to 50:50 in weight ratio.
- a polymer polyol in which a polyol is acrylonitrile-modified, a polyol in which melamine is added to a polyol, a diol such as butanediol, a polyol such as trimethylolpropane, or a derivative thereof may be used in combination.
- aromatic isocyanate or derivatives thereof aliphatic isocyanate or derivatives thereof, alicyclic isocyanate or derivatives thereof are used.
- aromatic isocyanates or derivatives thereof are preferred, and in particular, tolylene diisocyanate (TDI) or derivatives thereof, diphenylmethane diisocyanate (MDI) or derivatives thereof, polymethylene polyphenyl isocyanate or derivatives thereof are suitably used, singly or in combination. Used.
- tolylene diisocyanate or derivatives thereof crude tolylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, a mixture of 2,4-tolylene diisocyanate and 2,6-tolylene diisocyanate, or a mixture thereof Urea-modified products, burette-modified products, carbodiimide-modified products, urethane-modified products modified with polyols and the like are used.
- diphenylmethane diisocyanate or a derivative thereof for example, diphenylmethane diisocyanate or a derivative thereof obtained by phosgenation of diaminodiphenylmethane or a derivative thereof is used.
- Derivatives of diaminodiphenylmethane include polynuclear substances and the like, and pure diphenylmethane diisocyanate obtained from diaminodiphenylmethane and polymeric diphenylmethane diisocyanate obtained from polynuclear substances of diaminodiphenylmethane can be used.
- the functional group number of polymeric diphenylmethane diisocyanate a mixture of pure diphenylmethane diisocyanate and polymeric diphenylmethane diisocyanate of various functional group numbers is usually used, and the average functional group number is preferably 2.05 to 4.00, more preferably 2 .50 to 3.50 are used.
- derivatives obtained by modifying these diphenylmethane diisocyanates or derivatives thereof for example, urethane-modified products modified with polyols etc., dimers due to ureticidione formation, isocyanurate-modified products, carbodiimide / uretonimine-modified products, allohanate-modified products Urea-modified products, burette-modified products, etc. can also be used. Also, several kinds of diphenylmethane diisocyanate and derivatives thereof can be blended and used.
- the polyol and the isocyanate are put in a suitable container and sufficiently stirred, preferably at 30 to 90 ° C, more preferably 40 to 70 ° C, for 6 to 240 hours, more preferably 24 to 72 hours. There is a method of keeping warm. In this case, it is preferable to adjust the ratio of the amount of the polyol and the isocyanate so that the isocyanate content of the resulting prepolymer is 4 to 30% by mass, more preferably 6 to 15% by mass. If the isocyanate content is less than 4% by mass, the stability of the prepolymer may be impaired, and the prepolymer may be cured during storage, making it unusable for use.
- the catalyst used for the curing reaction of the urethane foam substrate there is no particular limitation on the catalyst used for the curing reaction of the urethane foam substrate.
- monoamines such as triethylamine and dimethylcyclohexylamine
- diamines such as tetramethylethylenediamine, tetramethylpropanediamine and tetramethylhexanediamine
- pentamethyldiethylenetriamine triamines such as pentamethyldipropylenetriamine and tetramethylguanidine
- triethylenediamine Cyclic amines such as dimethylpiperazine, methylethylpiperazine, methylmorpholine, dimethylaminoethylmorpholine, dimethylimidazole, etc., dimethylaminoethanol, dimethylaminoethoxyethanol, trimethylaminoethylethanolamine, methylhydroxyethylpiperazine, alcohols such as hydroxyethylmorpholine Amines, bis (d
- the said binder resin is characterized by including a silicone resin.
- a silicone resin that has not been used as a binder resin in the prior art, it is possible to suppress the hardening of the urethane foam after being impregnated into the urethane foam substrate, and as a result, the hardness and the resilience of the urethane foam. It is possible to minimize the change of
- the surface layer of the said urethane foam base material is a layer formed by coating binder resin containing an electrically conductive agent on frame
- the effect of the present invention can be exhibited as long as at least the surface is impregnated with the binder resin, and the thickness of the surface layer (the layer coated with the binder resin) is not particularly limited.
- the impregnation of the urethane foam with the binder resin may be performed by impregnating at least a part of the surface layer of the urethane foam, but from the viewpoint of minimizing changes in hardness and impact resilience of the urethane foam, the urethane It is preferred to impregnate the surface layer of the entire foam substrate.
- the content of the silicone resin contained in the binder resin is preferably 50% by mass or more in the binder resin, from the viewpoint of being able to further suppress changes in hardness and impact resilience of the urethane foam, and 70 It is more preferable that it is mass% or more, and it is most preferable that it is 100 mass%.
- the content of the silicone resin in the conductive urethane foam of the present invention is preferably 0.3 to 6.0 parts by mass with respect to 100 parts by mass of the urethane foam substrate, and 1.0
- the content is more preferably 6.0 to 6.0 parts by mass, further preferably 2.0 to 6.0 parts by mass, and particularly preferably 5.0 to 6.0 parts by mass. This is because changes in the hardness and impact resilience of the urethane foam can be further suppressed, and when the content of the silicone resin is less than 0.3 parts by mass with respect to 100 parts by mass of the urethane foam substrate, carbon is If it exceeds 6.0 parts by mass, the physical properties of the conductive urethane foam may change, and changes in hardness and impact resilience may not be sufficiently suppressed.
- the type of silicone resin contained in the binder resin is not particularly limited as long as it is a polymer compound having a main skeleton with a siloxane bond, and a silicone resin is appropriately selected and used according to the purpose or application. be able to.
- a silicone resin composed of a main agent of liquid silicone gel and a curing agent as the silicone resin Is preferred.
- a silicone resin for example, an addition reaction type liquid silicone resin, a heat-vulcanization type millable-type silicone resin using peroxide for vulcanization, and the like can be mentioned.
- the silicone resin from the viewpoint of being able to further suppress the change in hardness and impact resilience of the urethane foam, peroxide cured silicone, condensation type thermosetting silicone, addition type thermosetting silicone and cationic type UV curing silicone It is preferable that it is at least one selected from the group consisting of
- an acrylic resin in addition to the silicone resin described above, an acrylic resin, a polyacrylate resin, an acrylic acid-styrene copolymer resin, an acrylic acid-vinyl acetate copolymer can be used insofar as the effects of the present invention are not impaired. It may further contain an acrylic resin such as a polymer resin, polyvinyl alcohol, polyacrylamide, polyvinyl chloride resin, urethane resin, vinyl acetate resin, butadiene resin, epoxy resin, alkyd resin, melamine resin, chloroprene rubber and the like. These components can be used alone or as a mixture of two or more.
- solvent such as a suitable quantity of water, toluene, and ethyl acetate
- the solvent is preferably added such that the viscosity of the impregnating solution is about 5 to 300 cps (25 ° C.).
- the other additive can also be further contained in the said impregnation liquid as needed.
- the additive include antifoaming agents, surfactants, charge control agents and the like.
- the content of these additives is preferably 0.001 to 10 parts by mass, and more preferably 0.001 to 1 parts by mass with respect to 100 parts by mass of the impregnating solution.
- the binder resin impregnated in the conductive urethane foam of the present invention contains a conductive agent.
- the conductive agent is a material capable of imparting conductivity to a urethane foam substrate by impregnating the urethane foam substrate via the binder resin.
- a carbon conductive agent, an ion conductive agent, an electron conductive agent and the like can be mentioned, and these can be used alone or in combination.
- Examples of the carbon conductive agent include gas black such as denka black, ketjen black and acetylene black, oil furnace black containing ink black, thermal black, channel black, lamp black and the like.
- gas black such as denka black, ketjen black and acetylene black
- oil furnace black containing ink black thermal black, channel black, lamp black and the like.
- ketjen black it is preferable to use ketjen black from the viewpoint of being able to further suppress changes in hardness and impact resilience of the urethane foam.
- the content of the ketjen black in the conductive urethane foam of the present invention is 0.45 to 9.0 parts by mass with respect to 100 parts by mass of the base material of the urethane foam. Is preferably 1.0 to 9.0 parts by mass, more preferably 3.0 to 9.0 parts by mass, and particularly preferably 7.5 to 9.0 parts by mass. preferable. This is because changes in hardness and impact resilience of the urethane foam can be suppressed at a higher level.
- the ion conductive agent may be, for example, tetraethylammonium, tetrabutylammonium, dodecyltrimethylammonium (eg, lauryltrimethylammonium), hexadecyltrimethylammonium, octadecyltrimethylammonium (eg, stearyltrimethylammonium), benzyltrimethylammonium, modified Ammonium salts such as perchlorate, chlorate, hydrochloride, bromate, iobate, borohydrofluoride, sulfate, alkyl sulfate, carboxylate, sulfonate such as fatty acid dimethylethyl ammonium , Perchlorates, chlorates, hydrochlorides, bromates, iodates, borohydrofluorides, alkali metals and alkaline earth metals such as lithium, sodium, potassium, calcium and magnesium Fluoromethyl sulfate,
- examples of the electron conductive agent include conductive metal oxides such as tin oxide, titanium oxide and zinc oxide, and metals such as nickel, copper, silver and germanium.
- the toner supply roller of the present invention is characterized by using the above-mentioned conductive urethane foam of the present invention.
- the conductive urethane foam of the present invention it is possible to realize a toner supply roller having a high charge imparting effect and excellent stability.
- the toner supply roller is, for example, a roller 13 for supplying the toner 15 to the developing roller 12 as shown in FIG. 1, and has conductivity.
- FIG. 2 schematically shows an example of the toner supply roller of the present invention.
- the toner supply roller of the present invention carries the conductive urethane foam 3 of the present invention on the outer periphery of the shaft 1 via the adhesive layer 2.
- the shaft 1 used in the toner supply roller according to the present invention is not particularly limited, and any shaft can be used.
- a steel such as sulfur free-cutting steel and the like plated with nickel or zinc
- a metal core made of a solid body made of metal such as iron, stainless steel, or aluminum, or a metal shaft such as a metal cylinder whose inside is hollowed out can be used.
- the diameter of the shaft 1 is less than 6 mm, for example, 5.0 mm
- the thickness of the conductive urethane foam 3 of the present invention is less than 4.5 mm, for example, 4.0 mm. It is suitable.
- the weight of the roller can be reduced, and the elastic layer of the urethane foam in macro view is increased by thinning the conductive urethane foam 3 of the present invention, and the toner scraping property is improved.
- the volume reduction of the urethane foam due to the thinning of the conductive urethane foam 3 of the present invention reduces the amount of toner contained in the conductive urethane foam 3 of the present invention at the printing endurance, and the toner fuel consumption can be suppressed.
- the toner supply roller of the present invention it is preferable to provide an adhesive layer 2 between the shaft 1 and the charge-controlled conductive urethane foam 3.
- a heat melting polymer adhesive containing an adipate-based polyurethane resin having a melting point of 120 ° C. or more, particularly 130 ° C. or more and 200 ° C. or less as a main component can be suitably used.
- the adhesive may be in any form such as a film or a pellet.
- the thickness of the adhesive layer 2 is preferably 20 to 300 ⁇ m. If the thickness is too thin, adhesion failure occurs. If the thickness is too thick, suitable roller resistance can not be obtained.
- the melting temperature of the adhesive at the time of bonding is preferably 100 ° C. or more, particularly 130 ° C. or more and 200 ° C. or less, and preferably lower than the melting point of the adhesive.
- the adhesive layer 2 is in a semi-molten state, and it is easier to control the voltage dependency such that the roller resistance at 5 V is 10 6 to 10 8 ⁇ , and the roller resistance at 100 V is 10 2 to 10 4 ⁇ . As a result, it is possible to increase the density of the print endurance initial stage.
- the toner supply roller 13 according to the present invention may be, for example, the conductive urethane foam according to the present invention after the conductive urethane foam 3 according to the present invention is formed on the outer periphery of the shaft 1 through an adhesive if desired. It can manufacture by heat-adhering with 3 and predetermined temperature. For example, first, an impregnating solution formed by mixing a binder resin and an additive is prepared, and a block-like (16 mm ⁇ 1000 mm ⁇ 2000 mm) urethane foam not subjected to film removal treatment is prepared in a bath filled with the impregnating solution. After immersion and compression between two rolls, it is released to impregnate the impregnating solution with urethane foam.
- the solution is introduced onto a bath, passed through a nip roll, squeezed to remove excess impregnating solution, and removed by heating in a hot air oven at 110 ° C. for 10 minutes to produce a charge-controlled urethane foam 3.
- the conductive urethane foam 3 of the present invention which can be molded by this method, becomes a foam having a low hardness, specifically an Asker F hardness of 30 to 90 °, as compared with that obtained by mechanical gas encapsulation.
- a film adhesive is wound around the outer periphery of the shaft 1 or a pellet adhesive is melted and applied to form a film of the adhesive.
- a hole is made in the conductive urethane foam 3 of the present invention, and the shaft 1 with an adhesive is inserted into this hole.
- heating is performed at a predetermined temperature to integrate the shaft 1 and the conductive urethane foam 3 of the present invention through the adhesive layer 2, and the surface of the conductive urethane foam 3 of the present invention is polished to obtain a desired cylinder.
- the toner supply roller 13 of the present invention can be obtained by cutting the end portion of the conductive urethane foam 3 of the present invention into a predetermined shape.
- Examples 1 to 8 and Comparative Examples 1 to 3 Under the conditions shown in Table 1, a conductive urethane foam was produced in which the surface layer of the urethane foam substrate was impregnated with a binder resin containing a conductive agent. Then, the following evaluation was performed about each sample of the electroconductive urethane foam of the produced Example and a comparative example.
- the electroconductive urethane foam which can suppress the change of the hardness and impact resilience before and behind impregnation of a binder resin can be provided, having a stable charging property provision effect. Further, according to the present invention, it is possible to provide a toner supply roller having a high charge imparting effect and excellent stability.
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Abstract
Description
ただし、特許文献1~3の技術では、いずれもウレタンフォームに導電材を含浸するものであるため、トナー供給ローラ13と、トナー供給ローラ上のトナー及び現像ローラとの摩擦による帯電の影響を十分に防止することができず、長期間安定的に良好な画像が得られないという問題があった。
上記構成を具えることによって、安定した帯電性付与効果を有しつつ、バインダー樹脂の含浸前後における硬度及び反発弾性の変化を抑えることができる。
上記構成を具えることによって、高い帯電付与効果及び優れた安定性を実現できる。
<導電性ウレタンフォーム>
本発明の導電性ウレタンフォームは、ウレタンフォーム基材の表層に、導電剤を含有するバインダー樹脂が含浸してなる。
ウレタンフォーム基材の表層に、導電剤を含有するバインダー樹脂が含浸されていることによって、安定して帯電性付与効果を発現することができ、良好な画像を得ることができる。
本発明の導電性ウレタンフォームを構成するウレタンフォーム基材については、特に限定はされず、用途や目的に応じて、公知のウレタンフォームを適宜用いることができる。
そして、本発明の導電性ウレタンフォームでは、前記バインダー樹脂が、シリコーン樹脂を含むことを特徴とする。
従来バインダー樹脂として用いられていなかったシリコーン樹脂を、バインダー樹脂として用いることによって、前記ウレタンフォーム基材へ含浸させた後のウレタンフォームの硬質化を抑えることができる結果、ウレタンフォームの硬度及び反発弾性の変化を最小限に抑えることが可能となる。
また、前記バインダー樹脂による前記ウレタンフォームへの含浸は、前記ウレタンフォームの少なくとも一部の表層に含浸すればよいが、ウレタンフォームの硬度及び反発弾性の変化を最小限に抑える観点からは、前記ウレタンフォーム基材全体の表層に含浸することが好ましい。
また、本発明の導電性ウレタンフォームに含浸されているバインダー樹脂は、導電剤を含有する。前記導電剤とは、前記バインダー樹脂を介して前記ウレタンフォーム基材中に含浸することで、ウレタンフォーム基材に導電性を付与できる材料である。具体的には、カーボン導電剤、イオン導電剤、電子導電剤等が挙げられ、これらを単独又は複数混合して用いることができる。
また、上述した導電剤の中でも、カーボン導電剤を用いることが好ましい。コストを抑えつつも、優れた帯電性付与効果が得られるためである。
本発明のトナー供給ローラは、上述した本発明の導電性ウレタンフォームを用いたことを特徴とする。
本発明の導電性ウレタンフォームを用いることによって、帯電性付与効果が高く、安定性に優れたトナー供給ローラを実現できる。
また、図2は、本発明のトナー供給ローラの一例を模式的に示したものである。図2では、本発明のトナー供給ローラが、軸1の外周に、接着層2を介して、本発明の導電性ウレタンフォーム3を担持してなる。
かかる接着剤の性状としては、フィルムやペレット等、いかなる形態であってもよい。また、接着層2の厚みは、好適には20~300μmであり、薄すぎると接着不良が発生し、厚すぎると好適なローラ抵抗が得られないため、いずれも好ましくない。なお、接着時における接着剤の溶融温度は、100℃以上、特には130℃以上200℃以下であって、接着剤の融点よりも低い温度とすることが好ましい。これにより、接着層2が半溶融状態となり、5V印加時のローラ抵抗を106~108Ω、100V印加時のローラ抵抗を102~104Ωと電圧依存性をコントロールすることがより容易になり、印字耐久初期の濃度を上げることが可能となる。
例えば、まず、バインダー樹脂、添加剤を混合してなる含浸液を調製し、この含浸液を満たした浴中に、ブロック状(16mm×1000mm×2000mm)の除膜処理を施していないウレタンフォームを浸漬し、2本のロール間で圧縮した後、開放して含浸液にウレタンフォームを含浸する。これを浴上に導いて、ニップロールに通して余分な含浸液を絞り、除去した後110℃の熱風炉にて10分間加熱乾燥し、荷電制御されたウレタンフォーム3を作製する。この方法により成形できる本発明の導電性ウレタンフォーム3は、機械的なガス封入により得られるものと比べて低硬度、具体的にはアスカーF硬度で30~90°の発泡体となる。
表1に示すような条件で、ウレタンフォーム基材の表層に、導電剤を含有するバインダー樹脂を含浸させた導電性ウレタンフォームを作製した。
その後、作製した実施例及び比較例の導電性ウレタンフォームの各サンプルについて、以下の評価を行った。
(1)バインダー樹脂の含浸前後におけるウレタンフォームの硬度変化
実施例及び比較例の各サンプルについてアスカーF硬度を測定した。具体的には、バインダー樹脂の含浸前後で、剛直な板の上にサンプルのウレタンフォームを載置し、高分子計器(株)製アスカーゴム硬度計F型を用いて測定した。硬度の測定は、サンプルのウレタンフォームを静かに載置した後、10秒経過時の値を読み取ることで測定した。測定結果を、表1に示す。
実施例及び比較例の各サンプルについてウレタンフォームの反発弾性(%)を測定した。具体的には、バインダー樹脂の含浸前後で、JIS K 6400に準じて、水平台の上にサンプルのウレタンフォームを静置し、規定高さから鋼球を落下させて、跳ね返った高さを測定した。測定結果を、表1に示す。
実施例及び比較例の各サンプルについて、測定機((株)三菱ケミカルアナリテック製「ロレスタGX MCP-T700」)を用いて、印加電圧90Vの条件で、抵抗値(LogΩ・cm)を測定した。測定結果を、表1に示す。
*2 アクリル樹脂(アクリルニトリル・アクリル酸アルキル共重合体エマルジョン)、エネックス(株)製、「BS-050301-1」、固形分:50%
*3 シリコーン樹脂(シリコーン樹脂水分散体)、エネックス(株)製、「BS-160617-1」、固形分:30~40%
*4 カーボンブラック(カーボンブラック水分散体)、御国色素(株)製、「PSMブラックA898」、固形分:30~40%
*5 ケッチェンブラック(ケッチェンブラック水分散体)、ライオンスペシャリティケミカルズ(株)製、「ライオンペーストW-311N」、固形分16.5%
*6 非結晶シリカ混合物、信越シリコーン(株)製、「KS-502」
2 接着層
3 導電性ウレタンフォーム
11 画像形成体
12 現像ローラ
13 トナー供給ローラ
14 トナー収容部
15 トナー
Claims (6)
- ウレタンフォーム基材の表層に、導電剤を含有するバインダー樹脂が含浸してなる導電性ウレタンフォームであって、
前記バインダー樹脂が、シリコーン樹脂を含むことを特徴とする、導電性ウレタンフォーム。 - 前記導電性ウレタンフォームにおける前記シリコーン樹脂の含有量が、前記ウレタンフォーム基材100質量部に対して、0.3~6.0質量部であることを特徴とする、請求項1に記載の導電性ウレタンフォーム。
- 前記導電剤が、ケッチェンブラックであることを特徴とする、請求項1又は2に記載の導電性ウレタンフォーム。
- 前記導電性ウレタンフォームにおける前記ケッチェンブラックの含有量が、前記ウレタンフォームの基材100質量部に対して、0.45~9.0質量部であることを特徴とする、請求項3に記載の導電性ウレタンフォーム。
- 前記シリコーン樹脂が、過酸化物硬化シリコーン、縮合型熱硬化シリコーン、付加型熱硬化シリコーン及びカチオン型UV硬化シリコーンからなる群より選択される少なくとも一種であることを特徴とする、請求項1~4のいずれか1項に記載の導電性ウレタンフォーム。
- 請求項1~5のいずれか1項に記載の導電性ウレタンフォームを用いたことを特徴とする、トナー供給ローラ。
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US16/632,435 US11459440B2 (en) | 2017-07-24 | 2018-07-23 | Conductive urethane foam and toner supply roller |
JP2019532608A JP7189139B2 (ja) | 2017-07-24 | 2018-07-23 | 導電性ウレタンフォーム及びトナー供給ローラ |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114591534A (zh) * | 2020-12-04 | 2022-06-07 | 株式会社普利司通 | 导电性聚氨酯泡沫、导电性聚氨酯泡沫的制造方法及导电辊 |
US11576837B2 (en) | 2019-10-03 | 2023-02-14 | Jfxd Trx Acq Llc | Multi-zonal roller and method of use thereof |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57115433A (en) | 1981-11-14 | 1982-07-17 | Achilles Corp | Electrically-conductive urethane foam |
JPS6119658A (ja) * | 1984-07-02 | 1986-01-28 | ダウ コーニング コーポレーシヨン | 硬化性シリコーン組成物 |
JP2002319315A (ja) | 2001-04-20 | 2002-10-31 | Kurabo Ind Ltd | 導電性ポリウレタンフォーム |
JP2003215905A (ja) | 2002-01-24 | 2003-07-30 | Nitto Kogyo Co Ltd | トナー供給ローラ |
JP2003262997A (ja) * | 2002-03-11 | 2003-09-19 | Shin Etsu Polymer Co Ltd | 導電性弾性ロール及び画像形成装置 |
JP2009109762A (ja) * | 2007-10-30 | 2009-05-21 | Mitsuma Giken Kk | ゴムローラ及び加圧ローラ並びにその製造方法 |
WO2009150953A1 (ja) * | 2008-06-10 | 2009-12-17 | 株式会社ブリヂストン | ウレタンフォームおよびそれを用いたトナー搬送ローラ |
JP2010256708A (ja) | 2009-04-27 | 2010-11-11 | Bridgestone Corp | 荷電制御されたウレタンフォームおよびそれを用いたトナー搬送ローラ |
JP2012155207A (ja) * | 2011-01-27 | 2012-08-16 | Bridgestone Corp | トナー供給ローラおよびそれを用いた画像形成装置 |
JP2013011726A (ja) * | 2011-06-29 | 2013-01-17 | Bridgestone Corp | トナー供給ローラ |
JP2013037197A (ja) * | 2011-08-08 | 2013-02-21 | Bridgestone Corp | 画像形成装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6023597A (en) * | 1995-05-30 | 2000-02-08 | Canon Kabushiki Kaisha | Cellular conductive roller with conductive powder filling open cells in the surface |
US6776745B2 (en) * | 2002-01-24 | 2004-08-17 | Nitto Kogyo Co., Ltd. | Toner supply roller |
JP5087904B2 (ja) * | 2006-11-02 | 2012-12-05 | 富士ゼロックス株式会社 | 帯電ローラ、電子写真プロセスカートリッジ及び画像形成装置 |
JP2008224918A (ja) * | 2007-03-12 | 2008-09-25 | Konica Minolta Business Technologies Inc | 現像ローラ、現像装置および画像形成装置 |
KR101427243B1 (ko) * | 2007-07-02 | 2014-08-07 | 삼성전자주식회사 | 도전성 공급롤러의 제조방법, 이로부터 제조된 공급롤러 및이를 포함하는 정전기적 기록장치 |
WO2010005058A1 (ja) | 2008-07-10 | 2010-01-14 | 株式会社ブリヂストン | 荷電制御されたウレタンフォームおよびそれを用いたトナー搬送ローラ |
JP2011033838A (ja) | 2009-07-31 | 2011-02-17 | Synztec Co Ltd | トナー供給ロール |
JP5249883B2 (ja) | 2009-09-11 | 2013-07-31 | 株式会社沖データ | 現像装置および画像形成装置 |
US10935903B2 (en) * | 2018-04-19 | 2021-03-02 | Canon Kabushiki Kaisha | Developing roller, process cartridge and image forming apparatus |
-
2018
- 2018-07-23 CN CN201880049041.6A patent/CN110997780A/zh active Pending
- 2018-07-23 US US16/632,435 patent/US11459440B2/en active Active
- 2018-07-23 WO PCT/JP2018/027558 patent/WO2019022025A1/ja active Application Filing
- 2018-07-23 JP JP2019532608A patent/JP7189139B2/ja active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57115433A (en) | 1981-11-14 | 1982-07-17 | Achilles Corp | Electrically-conductive urethane foam |
JPS6119658A (ja) * | 1984-07-02 | 1986-01-28 | ダウ コーニング コーポレーシヨン | 硬化性シリコーン組成物 |
JP2002319315A (ja) | 2001-04-20 | 2002-10-31 | Kurabo Ind Ltd | 導電性ポリウレタンフォーム |
JP2003215905A (ja) | 2002-01-24 | 2003-07-30 | Nitto Kogyo Co Ltd | トナー供給ローラ |
JP2003262997A (ja) * | 2002-03-11 | 2003-09-19 | Shin Etsu Polymer Co Ltd | 導電性弾性ロール及び画像形成装置 |
JP2009109762A (ja) * | 2007-10-30 | 2009-05-21 | Mitsuma Giken Kk | ゴムローラ及び加圧ローラ並びにその製造方法 |
WO2009150953A1 (ja) * | 2008-06-10 | 2009-12-17 | 株式会社ブリヂストン | ウレタンフォームおよびそれを用いたトナー搬送ローラ |
JP2010256708A (ja) | 2009-04-27 | 2010-11-11 | Bridgestone Corp | 荷電制御されたウレタンフォームおよびそれを用いたトナー搬送ローラ |
JP2012155207A (ja) * | 2011-01-27 | 2012-08-16 | Bridgestone Corp | トナー供給ローラおよびそれを用いた画像形成装置 |
JP2013011726A (ja) * | 2011-06-29 | 2013-01-17 | Bridgestone Corp | トナー供給ローラ |
JP2013037197A (ja) * | 2011-08-08 | 2013-02-21 | Bridgestone Corp | 画像形成装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11576837B2 (en) | 2019-10-03 | 2023-02-14 | Jfxd Trx Acq Llc | Multi-zonal roller and method of use thereof |
CN114591534A (zh) * | 2020-12-04 | 2022-06-07 | 株式会社普利司通 | 导电性聚氨酯泡沫、导电性聚氨酯泡沫的制造方法及导电辊 |
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JPWO2019022025A1 (ja) | 2020-07-16 |
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