WO2001044878A1 - Oil coating roller, seal ring used for the roller, and fixing device using the seal ring - Google Patents
Oil coating roller, seal ring used for the roller, and fixing device using the seal ring Download PDFInfo
- Publication number
- WO2001044878A1 WO2001044878A1 PCT/JP2000/008913 JP0008913W WO0144878A1 WO 2001044878 A1 WO2001044878 A1 WO 2001044878A1 JP 0008913 W JP0008913 W JP 0008913W WO 0144878 A1 WO0144878 A1 WO 0144878A1
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- WO
- WIPO (PCT)
- Prior art keywords
- oil
- seal ring
- application roller
- roller
- oil application
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
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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
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
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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
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
- G03G15/2025—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/20—Details of the fixing device or porcess
- G03G2215/2093—Release agent handling devices
Definitions
- the present invention relates to an oil application roller for applying release oil to a fixing roller of a fixing device used for black and white and color printers, copying machines, faxes, etc., a seal ring used therefor, and a fixing device using the same.
- a fixing roller of a fixing device used for black and white and color printers, copying machines, faxes, etc. a seal ring used therefor, and a fixing device using the same.
- a full-color image is formed by an electrophotographic image forming process.
- Color toners used in image forming apparatuses such as copiers and printers need to have excellent translucency when fixed on recording materials. Is done. For this reason, conventionally, a color toner made of a binder resin having a low melting viscosity and melting quickly is used, and this color toner is fixed by a fixing device having a silicone rubber-based heating roller as a fixing roller. Methods have been adopted.
- various roll-shaped oil application rollers have been proposed as members for applying oil to a fixing unit or the like.
- One of them is an oil application roller in which release oil is contained in the center of a pipe with many small holes formed on the outer circumference, and heat-resistant felt such as Nomex is wrapped around the circumference. No. 4 discloses this.
- heat-resistant felt is applied on a member wound with a porous material such as paper.
- the wound oil application roller is disclosed in Japanese Utility Model Laid-Open No. 61-104469.
- an oil application roller provided with a silicone rubber sponge or the like as an intermediate layer for imparting flexibility is disclosed in JP-A-5-123636.
- An oil application roller using another heat resistant porous material instead of the heat resistant felt is disclosed in Japanese Patent Application Laid-Open No. 61-104469.
- the oil permeation control layer in order for the oil permeation control layer to stably control the amount of oil permeation, the amount of oil supplied to the oil permeation control layer must be kept constant. Also, in order to perform stable application over a long period of time, it is desirable that the oil holder has a two-layer structure of an oil supply layer and an oil diffusion layer.
- the porosity of the oil supply layer (the volume of the voids is the total volume) Must be higher than that of the oil diffusion layer.
- the porosity of the oil supply layer (the volume of the voids is the total volume) Must be higher than that of the oil diffusion layer.
- the oil closes the pores of the microporous membrane.
- the oil permeation control layer is the above-mentioned composite membrane, it is difficult to allow gas to permeate without breaking the membrane.
- the present invention has been made to solve the above-mentioned problems in the prior art. It is an object of the present invention to provide an oil application roller capable of preventing oil leakage during standing vertically and oil falling off in the fixing device, a sealing ring used therefor, and a fixing device using the same.
- the configuration of the oil application roller according to the present invention includes: a roller having at least an oil holding unit that holds oil and an oil application surface that applies the oil; An oil application roller including an airway provided at both ends and seal rings attached to both end surfaces of the roller in a liquid-tight state, wherein the seal ring communicates from the airway to the outside of the seal ring.
- the cross-sectional area of the vent holes is 0. 0 1 mm 2 or more l mm 2 or less.
- the cross-sectional area of the air hole is 0.01 mm 2 or more, the expanded air and water vapor are discharged to the outside through the air hole.
- the cross-sectional area of the air hole is 1 mm 2 or less, oil does not easily pass through the air hole. As a result, when the oil application roller is left standing vertically during actual use, the problem that the oil leaks to the outside through the ventilation holes of the seal ring of the oil application roller does not easily occur.
- the cross-sectional area of the air hole is smaller than 0.01 mm 2 , the expanded air and water vapor cannot be sufficiently discharged to the outside through the air hole. If the cross-sectional area of the ventilation hole is larger than l mm 2 , the oil will easily pass through the ventilation hole, and if the oil application roller is left standing vertically during actual use, the oil application roller seal ring Oil may leak out through pores.
- the seal Preferably, the ring has a concave oil reservoir on the side that contacts the roller, and the vent hole is provided between the oil reservoir and the outer peripheral surface of the seal ring.
- the portion of the ventilation hole facing the outer peripheral surface of the seal ring is in a horizontal state.
- the ventilation hole has a synergistic effect with the fact that it is difficult for oil to pass through, so that oil is not easily pushed out through the ventilation hole.
- the seal ring further has a hole in a part of the oil reservoir, and the vent hole is provided between the hole and an outer peripheral surface of the seal ring.
- the air holes can prevent oil from dropping through the air holes due to a synergistic effect with the fact that it is difficult for oil to pass through.
- the center of the sealing ring and the periphery of the hole farthest from the center are further defined as a.
- the distance to the surface is 0.98 a or less Preferably.
- the vent hole is provided to be bent. According to this preferred example, it is difficult for oil that has fallen from the oil holder and accumulated in the seal ring to pass through the ventilation hole. As a result, oil leakage from the oil application roller during standing in a vertical position and dropping of oil during actual use are less likely to occur.
- the configuration of the oil application roller of the present invention it is possible to reduce oil leaks when the oil application roller is placed vertically and left, so that contamination of materials and the like due to the oil leaks can be prevented. Further, since the oil falling into the fixing device can be reduced, the contamination by the oil in the fixing device can be prevented. In addition, since useless oil does not flow out of the oil application roller, the life of the oil application roller can be extended.
- the configuration of the seal ring according to the present invention is a seal ring provided in a liquid-tight state on an end surface of an oil application roller that holds oil and applies the oil to the surface to be applied, and is in contact with the oil application roller.
- a vent hole that communicates with the outside of the vent hole, and a cross-sectional area of at least a part of the vent hole is 0.01 mm 2 or more and 1 mm 2 or less.
- a concave oil reservoir is further provided on a side that comes into contact with the oil application roller, and the vent hole is provided. It is preferably provided between the oil reservoir and the outer peripheral surface of the seal ring main body. In this case, it is preferable that a hole is further provided in a part of the oil reservoir, and the vent hole is provided between the hole and the outer peripheral surface of the seal ring main body. In this case, when the distance from the center of the seal ring main body to the inner peripheral surface of the oil reservoir is a, the center of the seal ring main body and the peripheral surface of the hole furthest from the center are further defined as a. Is preferably 0.98 a or less.
- the vent hole is provided to be bent.
- a fixing device includes a fixing device that includes a fixing unit that fixes toner on a recording material by the action of heat and pressure, and an oil application roller that applies release oil to the fixing unit.
- the oil application roller of the present invention is used as the oil application roller.
- FIG. 1 is a side sectional view showing a fixing device in Embodiment 1 of the present invention.
- FIG. 2A is a cross-sectional view illustrating an oil application roller according to the first embodiment of the present invention
- FIG. 2B is an end view illustrating the oil application roller according to the first embodiment of the present invention.
- FIG. 3A is a cross-sectional view illustrating a seal ring of an oil application roller according to Embodiment 2 of the present invention
- FIG. 3B is a plan view illustrating a seal ring of the oil application roller according to Embodiment 2 of the present invention.
- FIG. 4A is a cross-sectional view illustrating a seal ring of an oil application roller according to Embodiment 3 of the present invention
- FIG. 4B is a plan view illustrating a seal ring of the oil application roller according to Embodiment 3 of the present invention.
- FIG. 5A is a seal ring of an oil application roller in Embodiment 4 of the present invention.
- FIG. 5B is a plan view showing a seal ring of an oil application roller in Embodiment 4 of the present invention.
- FIG. 6 is a side sectional view showing an oil application roller in Embodiment 4 of the present invention.
- FIG. 7A is a cross-sectional view illustrating a seal ring of an oil application roller according to Embodiment 5 of the present invention
- FIG. 7B is a plan view illustrating a seal ring of the oil application roller according to Embodiment 5 of the present invention.
- FIG. 8A is a cross-sectional view illustrating a seal ring of an oil application roller according to Embodiment 6 of the present invention
- FIG. 8B is a plan view illustrating a seal ring of the oil application roller according to Embodiment 6 of the present invention.
- the oil application roller of the present invention is provided with an oil retainer as an oil retainer composed of a thick porous tissue material, a hollow pipe having a hole or the like, and an outer peripheral surface of the oil retainer, at least a porous fiber tissue. It is desirable to have an oil permeation control layer containing a material. Here, the surface of the oil permeation control layer functions as the oil application surface.
- a material that is not affected by the held oil and that can withstand the operating temperature is desirable.
- Such materials include, for example, Nomex felt, Nomex braid, Nomex fiber bundle, glass fiber bundle, carbon fiber bundle, carbon fiber felt, various sintered ceramic porous bodies, silicone rubber porous sponge, polyester polyurethane Foams, aramide fiber bundles, polyimide foams, melamine foams, various other plastic sponges or foams, porous bodies, sintered bodies, fiber bundles, and the like can be given.
- melamine foam is particularly desirable in that it has a high porosity, has an appropriate pore size, is excellent in oil retention performance, and has elasticity.
- the porosity is required to be 50% or more.
- the oil holding amount is small and no oil leakage problem occurs, but the life is shortened and it becomes difficult to obtain a practical oil-coated roller.
- a metal pipe made of aluminum, SUS, or the like and having a plurality of holes is desirable.
- the porous fiber tissue material used in the oil permeation control layer of the present invention various materials can be mentioned. From the viewpoint of the uniformity of the porous structure, the uniformity of the void structure, and the like, polytetrafluorocarbon is preferred. Particularly preferred is a film made of polyethylene (PTFE) by a stretching method (a porous PTFE film).
- the thickness of the porous PTFE film is 0.001 to lmm, preferably 0.05 to 0.1 mm, and the porosity is 20 to 98%, preferably 50 to 9 0%, and the average pore size is from 0.05 to: L 5 m, preferably from 0 :! ⁇ 2 ⁇ m.
- the release oil include silicone oils, and more specifically, various modified silicone oils such as dimethyl silicone oil, fluorine oil, fluorosilicone oil, phenyl silicone oil, amino-modified silicone oil, and mercapto-modified silicone oil. Can be mentioned. Further, a mixture of these oils may be used.
- the viscosity of the release oil is not particularly limited, but is preferably 0.1 mm 2 Zs or more and 100 mm 2 Zs or less in consideration of actual use.
- a composite of a porous fiber tissue material and a mixture of silicone rubber and release oil can be used as a material of the oil permeation control layer of the present invention.
- the compounding method includes silicone rubber and release oil. After impregnating the porous fiber tissue material membrane with the mixture of fibers, a method of cross-linking is desirable.
- the mixture ratio of silicone rubber and release oil is 2:98, which is defined according to the target oil permeation amount. It is desirable to reduce the content of mold oil. If the release oil content is higher than this, the release oil cannot be contained in the silicone rubber completely and it will be in an ungelled state, making it difficult to control oil permeation.
- the impregnation amount of the mixture of the silicone rubber and the release oil can be appropriately determined so that the rate of filling the pores is within 100%.
- silicone rubber used here RTV (room temperature curing type) silicone rubber, LTV (low temperature curing type) silicone rubber, HTV (heat curing type) silicone rubber, UV curing silicone rubber, etc. are most suitable. .
- Methods for forming the oil permeation control layer on the outer peripheral surface of the oil holder include, for example, a method in which a fluorine resin such as FEP is interposed between the two and thermocompression bonding, a method in which the two are bonded with a thermosetting adhesive, and the like Can be used.
- a fluorine resin such as FEP
- a method in which the two are bonded with a thermosetting adhesive and the like
- a composite of a porous fiber tissue material and a mixture of silicone rubber and release oil is used as the material for the oil permeation control layer
- the silicone fiber and the silicone fiber It is desirable to form an oil permeation control layer by applying an uncrosslinked product of a mixture of release oils from the surface of the porous fibrous tissue material and crosslinking it.
- the porous fiber tissue material is immersed in a mixture of silicone rubber and release oil, and the mixture is mixed with the porous fiber tissue material. It is desirable to form an oil permeation control layer by impregnating the porous void portion, wiping or removing excess material remaining on the surface, and then crosslinking.
- the oil permeation control layer is integrally joined to the oil holder. Therefore, peeling of the oil transmission control layer is effectively prevented, and durability can be further improved. If there is enough durability, the oil permeation control layer can be formed on the outer peripheral surface of the oil holder only by integral joining by cross-linking without using an adhesive or the like.
- a conductive porous material having a conductive material such as carbon in a flesh portion or a void portion or both is used as a porous fiber tissue material constituting the oil permeation control layer. You may.
- the conductivity makes it possible to remove static electricity, so that it is possible to prevent troubles such as dust adhering to the surface of the oil application roller and toner contamination during storage due to the static electricity.
- the oil application roller of the present invention includes an oil retainer composed of a thick porous tissue material, a hollow pipe having holes, and an outer peripheral surface of the oil retainer, and includes at least a porous fiber tissue material.
- an oil permeation control layer is provided, an oil diffusion layer may be interposed between the oil holder and the oil permeation control layer.
- the material of the oil diffusion layer is preferably a material having appropriate flexibility or properties to make good contact with the mating roll to which the oil is applied. Examples of such a material include polyester felt, Nomex felt, silicone rubber sponge, composite foam formed by compounding silicone rubber with urethane foam, melamine foam, polyimide foam, and the like.
- the oil diffusion layer may be formed by using a material in which the above material is combined with an elastic body such as fluorine rubber or silicone rubber.
- the material of the seal ring of the present invention is preferably a material which is not affected by the oil used and can withstand the operating temperature.
- Such materials include, for example, polyacetal, polycarbonate, polyphenylene Heat-resistant resin such as sulfide, polyether sulfone, polyethylene terephthalate, polyether imide, polyamide imide, polyimide, etc., various metals such as aluminum, iron, s US, urethane rubber, silicone rubber, fluorine Examples include various elastic bodies made of rubber materials such as rubber, fluorosilicone rubber, EPDM (ethylene propylene rubber), and hydrin rubber.
- seal ring is processed into a specific shape by a method such as molding with a die, cutting and polishing, or lamination.
- the seal ring is provided with a hole for passing the shaft of the oil application roller as necessary. By fitting the shaft of the oil application roller into this hole, this part can be sealed, so that no oil leaks from the engagement part when the oil application roller is left standing vertically. If necessary, an O-ring or the like may be inserted into the fitting portion between the seal ring and the shaft core.
- the outer diameter of the seal ring of the present invention is desirably smaller by about 2 to 30% than the outer diameter of the oil application roller. If the outer diameter of the seal ring is smaller than 2% and it is almost the same diameter as the oil application roller, the oil application roller may not sufficiently hit the fixing member. Further, when the outer diameter of the seal ring is reduced by 30% or more, it becomes difficult to block the airway on the end face of the oil application roller with the seal ring.
- ventilation holes it is necessary to provide ventilation holes in both seal rings. If ventilation holes are provided only on one side of the seal ring, if oil is biased toward the ventilation holes in the oil application port, the expansion that occurs when the temperature of the fixing unit rises is raised. The so-called “oil squirting problem” occurs, in which the oil is pushed out through the ventilation holes by the stretched air or water vapor.
- the present invention is characterized in that the cross-sectional area of the ventilation hole is not less than 0.01 mm 2 and not more than 1 mm 2 . If the cross-sectional area of the ventilation hole is l mm 2 or more, for example, when the oil application roller is placed vertically in actual use, oil leaks from the ventilation hole of the lower seal ring in a short time. Problems arise. On the other hand, if the cross-sectional area of the ventilation hole is less than 0.01 mm 2 , it is difficult for expanded air or water vapor generated when the temperature of the fixing device is raised to escape to the outside of the oil application roller. For this reason, the internal pressure in the oil application roller increases, and problems such as deformation of the oil application roller occur.
- the cross-sectional area of the ventilation hole is set to not less than 0.01 mm 2 and not more than l mm 2 . This is the numerical value of the portion having the smallest cross-sectional area in the air hole, and it is sufficient that the cross-sectional area at a specific portion in the air hole is not less than 0.01 mm 2 and not more than lmm 2 .
- the length of the ventilation hole is 0.1 mm or more.
- the expanded air or water vapor can escape to the outside of the oil application roller.
- the shape of the ventilation hole of the seal ring is a curved and irregular shape such as a curved shape or a zigzag shape. If the shape of the ventilation hole is irregular and bent, air and water vapor will easily escape, but oil will not easily pass. As a result, it is possible to prevent the occurrence of oil leakage when the oil application roller is left standing vertically.
- the concave oil reservoir provided in the seal ring of the present invention various shapes such as a circular cross section, a square shape, and other irregular shapes can be considered. From the viewpoint of oil storage, the depth of the oil storage is 0.5 It is desirable that it be at least mm.
- the hole provided in the oil reservoir of the seal ring of the present invention may have various shapes such as a circular cross section, a square shape, and other irregular shapes. If the cross-sectional area of the wall of the hole as a starting point 0. 0 1 mm 2 or more lmm 2 a shape that can form the following vent may be of any shape.
- the hole provided in the oil reservoir of the seal ring is located on the bottom surface of the oil reservoir, which is in the axial direction of the oil application roller, rather than the inner peripheral surface of the oil reservoir. According to this configuration, the oil that has fallen from the oil application roller body does not directly accumulate in the hole, so that the problem of oil falling from the oil roller during actual use hardly occurs.
- the distance from the center of the seal ring to the inner peripheral surface of the oil reservoir is a
- the distance between the central portion of the seal ring and the peripheral surface of the hole (the hole provided in the oil reservoir) farthest from the center is 0.98 a or less.
- the material of the shaft core used for the oil application roller of the present invention various metals such as aluminum, iron, and SUS are desirable.
- any method can be adopted as long as an oil application roller can be installed.
- a heat roller having an elastic body on its surface or a belt having an elastic body is desirable.
- a surface material silicone rubber, fluoro rubber, PFA tube, Teflon coat, etc. having good releasability are desirable.
- a pressure roller or the like is preferably used to crush the toner by pressure.
- the toner is crushed by a pressure roller or the like by a linear force of 0.998 NZcm or more and 19.6 NZcm or less.
- the oil application roller of the present invention may be provided such that the air holes and the roller surface are protected with a film or the like as necessary during transportation or the like, and the air holes themselves are made of resin, rubber, metal, or the like. It may be sealed by, for example, sealing. At the time of actual use, these films, sealing plugs, etc. are removed.
- a heating member such as a halogen lamp or a ceramic is usually used, but any heat source may be used as long as it generates heat or the like.
- the oil leakage test from the oil application roller during the vertical standing according to the present invention was performed after leaving the oil application roller in a fixing device in which the surface temperature of the fixing member was controlled at 170 ° C. for 1 hour. The test was performed by leaving the oil application roller vertically. Then, the time until the oil leaked from the ventilation hole of the seal ring was measured.
- the heat application roller was mounted in the fixing device, and the fixing member was stopped, and 50 heat cycles were performed in the fixing device.
- the weight change of the oil application roller was measured with a balance.
- the control of the surface temperature of the fixing member was set to FF. This was performed by cooling the oil application roller for 2 hours. This is a heat cycle test for a total of 3 hours.
- FIG. 1 is a side sectional view showing a fixing device according to Embodiment 1 of the present invention.
- the fixing device of the present embodiment includes a fixing roller 1 as a fixing member and a pressure roller 7 as a pressure member.
- Fixing roller 1 has an altitude of 250 mm in length, 28 mm in outer diameter, and l mm in thickness.
- a hollow roller core 2 made of mini-mum and an elastic layer 3 of 1 mm thick made of silicone rubber with a rubber hardness (JIS-A) of 30 degrees according to JIS standard formed on the outer peripheral surface of the hollow roller core 2
- a fluorine resin tube 4 made of PFA having a surface roughness Rz force of 1.0 m and a thickness of 30 / m, which is coated on the elastic layer 3.
- the outer diameter of the fixing roller 1 is about 30 mm.
- the fixing roller 1 is provided with a 700 W lamp heater 5 for heating therein, and a temperature sensor 6 is disposed on the outer peripheral surface of the fixing roller 1.
- the fixing roller 1 rotates at a speed of 100 mm / s by receiving a driving force from a driving mode (not shown).
- a cleaning roller 14 as a cleaning member and an oil application roller 15 as an oil application member are arranged on the outer peripheral surface of the fixing roller 1 so as to be in contact with each other.
- the cleaning roller 14 and the oil application roller 15 are held by a holder 16.
- the cleaning roller 14 is made of an aluminum hollow roller having a length of 240 mm, an outer diameter of 20 mm, and a thickness of 1 mm, and is pressed against the fixing roller 1 at a pressure of 0.49 N / cm.
- the oil application roller 15 has a length of 240 mm and an outer diameter of 20 mm, and is pressed against the fixing roller 1 with a pressure of 0.49 NZcm.
- the pressure roller 7 is formed on an aluminum hollow roller core 8 having a length of 250 mm, an outer diameter of 28 mm, and a thickness of l mm, and is formed on an outer surface of the hollow roller core 8.
- JIS-A is composed of a 1.5 mm thick elastic layer 9 made of 55 degree silicone rubber.
- the outer diameter of the pressure roller 7 becomes about 30 mm.
- the pressure roller 7 is pressed against the fixing roller 1 by a pressure spring 10 with a panel load of 147 N on one side, and a nip portion having a width of 4.0 mm is formed between the pressure roller 7 and the fixing roller 1.
- the pressure roller 7 is rotatably installed.
- the recording paper 11 onto which the color toner 13 has been transferred is conveyed along the guide plate 12 and passes through the nip between the fixing roller 1 and the pressure roller 7 so that the recording paper 11 is transferred onto the recording paper 11.
- Color toner 13 is fixed.
- FIG. 2A is a cross-sectional view showing an oil application roller in Embodiment 1 of the present invention
- FIG. 2B is an end view thereof.
- the oil application roller 15 of the present embodiment has a shaft core 21, an oil holder 22 provided around the shaft core 21, and an oil holder 22 provided on the surface of the oil holder 22.
- the oil retainer 22 is formed of a polyester-based polyurethane foam cut into a column having an inner diameter of 6 mm and an outer diameter of 23 mm.
- the shaft core 21 is formed of SUS 4 16 having a diameter of 6 mm, and is inserted into the oil holder 22 and fused.
- the oil diffusion layer 23 is formed by cutting a Nomex felt having a thickness of 2 mm on a tape having a width of 30 mm, and spirally winding and adhering the surface of the oil holder 22.
- a silicone adhesive is used as the adhesive.
- the oil permeation control layer 24 is formed as follows. First, an expanded porous PTFE film (trade name Gotex: manufactured by Japangotex) having a thickness of 40 m, a porosity of 75%, and an average pore diameter of 0.2 m, which is a porous fiber tissue material, was prepared. Wrap and adhere to the surface of the oil diffusion layer 23. Here, a silicone-based adhesive is used as the adhesive, and this adhesive is applied in a dot shape on the surface of the oil diffusion layer 23. Next, silicone rubber (KE106: Shin-Etsu Chemical Co., Ltd.) and silicone oil (KF966: Shin-Etsu Chemical Co., Ltd.) were added to the stretched porous PTFE film in a ratio of 3: 7. The mixture is impregnated, the excess is removed, and the mixture is heated at a temperature of 150 ° C. for 40 minutes for crosslinking to form a composite film to be the oil permeation control layer 24.
- a silicone-based adhesive is used as the adhesive,
- the air passages 27 are provided on both surfaces of the oil holder 22 in the direction of the axis of rotation.
- the oil carrier (polyester-based polyurethane foam) 22 contains uniformly dispersed amino-modified silicone oil (amino equivalent: 30000 gZmo1, viscosity: 1 mm 2 / s: Shin-Etsu Silicone Co., Ltd.). I have.
- the uniform dispersion of the amino-modified silicone oil is achieved by injecting 50 g of the amino-modified silicone oil from the end face of the oil holder 22 and then rotating the oil application roller 15.
- the seal ring 25 is made of a polyphenylene sulfide having an outer diameter of 26 mm, an inner diameter of 6 mm, and a thickness of 5 mm, and after the amino-modified silicone oil is uniformly dispersed in the oil holder 22, the seal ring 25 is formed. Fitted on both ends.
- Each seal ring 25 is formed so as to penetrate along the axial direction of the oil application roller 15, and has four ventilation holes 26 communicating from the airway 27 of the oil holder 22 to the outside.
- each ventilation hole 26 is set to have a length of 5 mm and a cross-sectional area of 0.3 mm 2 .
- An oil leakage test was performed by leaving the oil application roller 15 configured as described above in a vertical position.
- FIG. 3A is a cross-sectional view showing a seal ring of an oil application roller in Embodiment 2 of the present invention
- FIG. 3B is a plan view thereof.
- the seal ring 31 of this embodiment is made of polyphenylene sulfide having an outer diameter of 26 mm and a thickness of 5 mm.
- the seal ring 31 has an oil reservoir 33 having an outer diameter of 16 mm and a depth of 4 mm, and a hole 34 having an inner diameter of 6 mm for fitting a shaft of an oil application roller.
- the seal ring 31 has four ventilation holes 32 formed through the oil reservoir 33 along a direction substantially perpendicular to the direction of the axis of rotation of the oil application roller.
- each ventilation hole 32 has a length of 5 mm and a sectional area of 0.3 mm 2 .
- the oil leakage test was performed by leaving it vertically set (the oil leaked from the vent hole 32 of the seal ring 31). When the time until the gas leaked out was measured, oil leakage from the vent hole 32 was observed only after a long time of 43 minutes had elapsed.
- the amount of oil dropped was as small as 23 mg.
- FIG. 4A is a sectional view showing a seal ring of an oil application roller in Embodiment 3 of the present invention
- FIG. 4B is a plan view thereof.
- the seal ring 41 of the present embodiment is made of polyphenylene sulfide having an outer diameter of 26 mm and a thickness of 5 mm.
- the seal ring 41 has an oil reservoir 42 having an outer diameter of 16 mm and a depth of 2.5 mm, and a long shaft provided on the bottom surface of the oil reservoir 42 which is an axial direction of the oil application roller. It has four oval holes 4 3 with a length of 4 mm, a short axis of 2 mm, and a depth of 1.5 mm, and a hole 4 5 with an inner diameter of 6 mm for fitting the shaft of the roller. ing.
- each oval hole 43 is located at a distance of 7 mm from the center of the seal ring 41 (the center of the hole 45). Further, the seal ring 41 has four air holes 44 formed so as to penetrate from the respective oval holes 43 along a direction substantially perpendicular to the direction of the axis of rotation of the oil application roller. .
- each ventilation hole 44 has a length of 5 mm and a sectional area of 0.3 mm 2 .
- the amount of oil dropped was as small as 18 mg.
- FIG. 5A is a cross-sectional view showing a seal ring of an oil application roller in Embodiment 4 of the present invention
- FIG. 5B is a plan view thereof.
- the seal ring 51 of the present embodiment is made of a polyphenylene sulfide having an outer diameter of 26 mm and a thickness of 5 mm.
- the seal ring 51 has an oil reservoir 52 having an outer diameter of 22 mm and a depth of 2.5 mm, and a major axis 4 mm provided on the bottom surface of the oil reservoir 52 which is an axial direction of the oil application roller. It has four elliptical holes 53 with a short axis of 2 mm and a depth of 1.5 mm, and a hole 55 with an inner diameter of 6 mm for fitting the axis of the wheel application roller.
- the center of each of the elliptical holes 53 is in the seal ring 51.
- the seal ring 51 has four ventilation holes 54 formed through the elliptical holes 53 along a direction substantially perpendicular to the axis of rotation of the oil application roller. are doing.
- each ventilation hole 54 is set to have a length of 5 mm and a cross-sectional area of 0.3 mm 2 .
- the amount of oil accumulated in the oil reservoir 52 of the seal ring 51 of the oil application roller 15 was measured. As shown in Fig. 6, the oil that has fallen is stored in the oil sump 52 of the two seal rings 51 attached to the both end faces of the oil application roller 15 and the weight of the oil 61 that has fallen. was determined to be 15 O mg in total.
- FIG. 7A is a cross-sectional view showing a seal ring of an oil application roller in Embodiment 5 of the present invention
- FIG. 7B is a plan view thereof.
- the seal ring 71 of this embodiment is made of polyphenylene sulfide having an outer diameter of 26 mm and a thickness of 5 mm. This seal ring
- 7 1 is an oil sump with an outer diameter of 22 mm and a depth of 2.5 mm 7 2, and an oil sump 7 2 which is the axial direction of the oil application roller.
- each of the elliptical holes 73 is located at a distance of 7 mm from the center of the seal ring 71 (the center of the hole 75).
- the seal ring 71 has four air holes 74 formed through the elliptical holes 73 along a direction substantially perpendicular to the axis of rotation of the oil application roller. .
- each ventilation hole 7 4 has a bent irregular shape
- the seal ring 71 was attached to both end surfaces of the oil application roller 15 of the first embodiment, and then left vertically to perform an oil leakage test. ⁇ The oil leaked from the vent hole 74 of the seal ring 71. When the time until the gas leaked out was measured, oil leakage from the vent hole 74 was observed only after a long time of 93 minutes had elapsed.
- FIG. 8A is a cross-sectional view showing a seal ring of an oil application roller according to Embodiment 6 of the present invention
- FIG. 8B is a plan view thereof.
- the seal ring 81 of the present embodiment is made of a polyphenylene sulfide having an outer diameter of 26 mm and a thickness of 5 mm.
- the seal ring 81 has an oil reservoir 82 having an outer diameter of 22 mm and a depth of 2.5 mm, and a long shaft 4 mm provided on the bottom surface of the oil reservoir 82 which is in the axial direction of the oil application roller. It has four elliptical holes 83 with a short axis of 2 mm and a depth of 1.5 mm, and a hole 85 with an inner diameter of 6 mm for fitting the axis of the wheel application roller.
- each oval hole 8 3 is inside the seal ring 8 1 It is located at a distance of 7 mm from the core (center of hole 85).
- the seal ring 81 has four air holes 84 formed so as to penetrate from the respective oval holes 83 along a direction substantially perpendicular to the axis of rotation of the oil application roller.
- each of the vent holes 84 has a bent irregular shape (zigzag shape), and is a straight line having a length of 2 ° and a cross-sectional area of 0.3 mm 2 which is swung right and left by an angle of 45 °. It is a combination of ventilation holes.
- Example vents 2 0. sectional area of 6, respectively 0 1 mm 2 in 1, 0. 1 mm 2, were prepared three kinds of the seal ring is a 1. 0 mm 2. Then, each of the seal rings was mounted on the oil application roller 15 of Example 1 described above, and left standing vertically to perform an oil leak test.
- Sectional area are each 0. 0 1 mm 2, 0. 1 mm 2, was measured the time from vents 1. 0 mm 2 until the oil leaks, respectively 6 0 minutes, 4 5 min, 2 0 minutes After a long time, oil leakage from the vent was observed.
- each oil application port in the fixing device installs each oil application port in the fixing device, and was subjected to oil dropping test from the application roller, 0 the cross-sectional area, respectively, 0 1 mm 2, 0. 1 mm 2, 1.
- Each 1 5 mg is oil dropping from 0 mm 2 vents, 2 3 mg, 3 2 mg and small amount.
- An oil application roller having a configuration that does not use the seal ring 25 in Example 1 above was manufactured.
- An oil leak test was performed by leaving the oil application roller in a vertical position.
- a seal ring in which the cross-sectional area of the ventilation hole 26 in Example 1 was 2.0 mm 2 was produced. Then, after installing this seal ring on the oil applying roller of Example 1 described above, an oil leak test was performed by leaving the seal ring in a vertical position.
- a seal ring was prepared and attached to the oil application roller of Example 1 above.
- the oil application roller was installed in the fixing device and the temperature was raised.
- the outer diameter of the oil application roller was the same as before the temperature increase. It expanded from 27 mm to 35 mm, and a large amount of air accumulation was observed inside the oil permeation control layer.
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00981766A EP1243980A4 (en) | 1999-12-17 | 2000-12-14 | ROLL FOR OIL APPLICATION, SEAL RING USED WITH THE ROLL AND FIXING DEVICE COMPRISING SAID RING |
US10/168,254 US6668150B2 (en) | 1999-12-17 | 2000-12-14 | Oil coating roller, seal ring used for the roller, and fixing device using the seal ring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35928099 | 1999-12-17 | ||
JP11/359280 | 1999-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001044878A1 true WO2001044878A1 (en) | 2001-06-21 |
Family
ID=18463698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/008913 WO2001044878A1 (en) | 1999-12-17 | 2000-12-14 | Oil coating roller, seal ring used for the roller, and fixing device using the seal ring |
Country Status (4)
Country | Link |
---|---|
US (1) | US6668150B2 (ja) |
EP (1) | EP1243980A4 (ja) |
CN (1) | CN1183425C (ja) |
WO (1) | WO2001044878A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101614603B1 (ko) * | 2014-07-10 | 2016-04-22 | 주식회사 포스코 | 테일러 웰디드 블랭크 용접된 Al-Si 도금 강판의 열간 프레스 성형 방법 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004184925A (ja) * | 2002-12-06 | 2004-07-02 | Hitachi Printing Solutions Ltd | 電子写真式印刷装置の定着装置 |
US20040144304A1 (en) * | 2003-01-17 | 2004-07-29 | Fuji Photo Film Co., Ltd. | Rod for coating machine and method for producing the same |
JP2010002578A (ja) * | 2008-06-19 | 2010-01-07 | Kyocera Mita Corp | 軸受構造及びこれを備えたクリーニング装置、画像形成装置 |
JP2017083556A (ja) * | 2015-10-26 | 2017-05-18 | 株式会社リコー | 定着装置及び画像形成装置 |
KR102236963B1 (ko) * | 2017-03-28 | 2021-04-07 | 캐논 가부시끼가이샤 | 전자사진용 회전가능 가압체 및 그 제조 방법, 및 정착 장치 |
JP6919319B2 (ja) * | 2017-05-15 | 2021-08-18 | 株式会社リコー | 定着装置、及び、画像形成装置 |
US11898602B2 (en) * | 2018-04-24 | 2024-02-13 | Applied Materials, Inc. | Multi-zone air turn for transport of a flexible substrate |
WO2020023053A1 (en) | 2018-07-27 | 2020-01-30 | Hewlett-Packard Development Company, L.P. | Cleaning electrophotographic printing drums |
JP7167645B2 (ja) * | 2018-11-09 | 2022-11-09 | 京セラドキュメントソリューションズ株式会社 | 定着装置及び画像形成装置 |
CN109759280A (zh) * | 2019-03-11 | 2019-05-17 | 宁波瑞卡电器有限公司 | 一种电源线转尾头自动涂油设备 |
CN110066506B (zh) * | 2019-04-02 | 2021-09-28 | 百恩实业(深圳)有限公司 | 一种轻质缓释供油辊及其制备方法 |
CN111365842A (zh) * | 2020-03-06 | 2020-07-03 | 沈阳达明电工机械有限公司 | 一种油温加热辊 |
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JPH1195597A (ja) * | 1997-09-17 | 1999-04-09 | Matsushita Electric Ind Co Ltd | オイル塗布ローラおよびオイル塗布ローラ梱包材 |
JPH11219059A (ja) * | 1998-01-30 | 1999-08-10 | Fuji Xerox Co Ltd | オイルロールおよびそれを含む交換ユニットの梱包容器 |
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US4040383A (en) * | 1976-03-04 | 1977-08-09 | Minnesota Mining And Manufacturing Company | Fuser roll lubricator-cleaner |
US4086871A (en) * | 1977-05-18 | 1978-05-02 | Minnesota Mining And Manufacturing Company | Lubricator roll |
JPS61104469A (ja) | 1984-10-24 | 1986-05-22 | Pioneer Electronic Corp | ドロツプアウト補償回路 |
JPS60136782A (ja) | 1984-11-13 | 1985-07-20 | Nitto Kogyo Kk | 電子複写機用オフセット防止液供給ローラー |
JPS61183679A (ja) | 1985-02-09 | 1986-08-16 | Sumitomo Electric Ind Ltd | 離型剤塗布装置 |
JPH0673051B2 (ja) | 1986-02-03 | 1994-09-14 | ジヤパンゴアテツクス株式会社 | 複写機用オイル塗布機構 |
JPS6460144A (en) | 1987-08-31 | 1989-03-07 | Nippon Electric Eng | Remote control system |
JP3099076B2 (ja) | 1991-11-06 | 2000-10-16 | 石川日東株式会社 | オイル塗布ロ−ラ |
DE59302946D1 (de) * | 1992-10-22 | 1996-07-18 | Siemens Nixdorf Inf Syst | Trennmitteldosiervorrichtung für eine fixierwalze eines druck- oder kopiergerätes |
JP3361773B2 (ja) * | 1998-06-05 | 2003-01-07 | 松下電器産業株式会社 | 画像形成装置とそれに用いるオイル塗布ローラユニットおよび定着装置 |
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2000
- 2000-12-14 WO PCT/JP2000/008913 patent/WO2001044878A1/ja active Application Filing
- 2000-12-14 CN CNB008172188A patent/CN1183425C/zh not_active Expired - Fee Related
- 2000-12-14 EP EP00981766A patent/EP1243980A4/en not_active Withdrawn
- 2000-12-14 US US10/168,254 patent/US6668150B2/en not_active Expired - Fee Related
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JPH1195597A (ja) * | 1997-09-17 | 1999-04-09 | Matsushita Electric Ind Co Ltd | オイル塗布ローラおよびオイル塗布ローラ梱包材 |
JPH11219059A (ja) * | 1998-01-30 | 1999-08-10 | Fuji Xerox Co Ltd | オイルロールおよびそれを含む交換ユニットの梱包容器 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101614603B1 (ko) * | 2014-07-10 | 2016-04-22 | 주식회사 포스코 | 테일러 웰디드 블랭크 용접된 Al-Si 도금 강판의 열간 프레스 성형 방법 |
Also Published As
Publication number | Publication date |
---|---|
EP1243980A1 (en) | 2002-09-25 |
EP1243980A4 (en) | 2006-02-01 |
US6668150B2 (en) | 2003-12-23 |
CN1183425C (zh) | 2005-01-05 |
US20020181978A1 (en) | 2002-12-05 |
CN1409833A (zh) | 2003-04-09 |
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