WO2012029380A1 - 定着ベルト - Google Patents
定着ベルト Download PDFInfo
- Publication number
- WO2012029380A1 WO2012029380A1 PCT/JP2011/064216 JP2011064216W WO2012029380A1 WO 2012029380 A1 WO2012029380 A1 WO 2012029380A1 JP 2011064216 W JP2011064216 W JP 2011064216W WO 2012029380 A1 WO2012029380 A1 WO 2012029380A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- fixing belt
- primer layer
- fluororesin
- surface layer
- Prior art date
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Classifications
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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
- G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
- G03G15/2057—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating relating to the chemical composition of the heat element and layers thereof
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/41—Compounds containing sulfur bound to oxygen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
- Y10T428/1359—Three or more layers [continuous layer]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
- Y10T428/1393—Multilayer [continuous layer]
Definitions
- the present invention relates to a fixing belt used for fixing a toner image transferred onto recording paper or the like by heating in an image forming apparatus.
- a fixing belt heated by a heating source and a pressure roller are pressed against each other, and a toner image is transferred therebetween.
- a thermal fixing method in which an untransferred toner is heated and melted by passing the transferred object is used.
- the fixing belt used here is required to have elasticity and thermal conductivity for obtaining excellent fixing properties, and mechanical strength for obtaining excellent durability and wear resistance. Further, the fixing belt is required to be excellent in toner releasability and easy to be neutralized without being charged in order to prevent offset (double transfer) and the like and form a clear image.
- a fixing belt fixing roller having a structure in which a primer layer is provided therebetween is proposed.
- Patent Document 1 discloses a conductive primer layer containing 1 to 40% by weight of carbon (carbon black) powder and a fixing tube (fixing belt) having a conductive layer.
- the conductive primer layer in Patent Document 1 has a role as an adhesive layer for adhering a fluororesin film as a top coat (surface layer) and a polyimide tube as a substrate, like the primer layer of a general fixing belt, Furthermore, by including carbon black powder, conductivity is imparted, and it serves as a conductive layer for preventing offset and forming a clear image.
- Japanese Patent No. 3305467 discloses a conductive primer layer containing 1 to 40% by weight of carbon (carbon black) powder and a fixing tube (fixing belt) having a conductive layer.
- the conductive primer layer in Patent Document 1 has a role as an adhesive layer for adhering a fluororesin film as a top coat (surface layer) and a polyimide tube as a substrate, like the primer layer of a general fixing belt, Furthermore, by
- the primer between the surface layer and the other layer is preferably composed of a material mainly composed of the fluororesin in order to improve the adhesion with the fluororesin.
- a conductive filler such as carbon black powder or metal oxide in the primer layer in order to impart conductivity and prevent offset.
- a primer layer provided between the surface layer and another layer, and has high conductivity for preventing a offset and forming a clear image, and adhesion between the surface layer and the other layer.
- Development of an excellent primer layer was desired.
- a primer layer that does not impair the appearance even when a transparent fluororesin is used for the surface layer.
- it has such a primer layer and can form a clear image excellent in the effect of preventing offset and the like, and is excellent in adhesion between the surface layer and other layers, and has a problem in appearance.
- the present invention provides a fixing belt that is excellent in the effect of preventing offset and the like, can form a clear image, has excellent adhesion between a surface layer and another layer, and has no problem in appearance. Is an issue.
- the present inventor can impart high conductivity to the primer layer by using a fluorine-containing ion conductive agent instead of carbon black powder or the like.
- the inventors have found that a fixing belt having excellent adhesion between the surface layer and other layers and having no problem in appearance can be obtained, and the present invention has been completed. That is, the above problem is solved by the invention having the following configuration.
- the invention described in claim 1 A tubular substrate, a surface layer made of fluororesin A provided on the outermost layer, and a primer layer provided in contact with the surface layer;
- the primer layer is a fixing belt containing a fluororesin B and a fluorinated ion conductive agent.
- This invention is characterized by using one or more conductive agents selected from fluorine-containing ion conductive agents as the conductive agent added to the primer layer. Even if the fluorine-containing ion conductive agent is contained in a large amount (for example, 40% by weight) in the primer layer, the adhesive force of the primer layer is not inhibited.
- the fluorine-containing ionic conductive agent has a CF or F- structure in each structure, similar to the fluororesin used for the surface layer or primer layer, so the fluororesin constituting the surface layer or primer layer This is probably because the interface is easy to adjust, and even if a large amount of conductive filler is contained in the primer layer, it does not hinder its adhesive force.
- the fluorine-containing ion conductive agent is a compound having fluorine in the molecule and having ion conductivity (fluorine ion conductive compound).
- a sulfonic acid represented by the formula Rf-SO3M Rf represents an alkyl group containing fluorine, M represents H, K, Na, NH4 or Li.
- Rf-SO3M Rf represents an alkyl group containing fluorine
- M represents H, K, Na, NH4 or Li.
- a salt, a disulfonate represented by MO3S- (CF2) n-SO3M, a sulfonic acid anhydride represented by (Rf-SO2) 2O, and Rf-SO3R R represents an alkyl group or the like).
- these fluorine-containing ionic conductive agents have a function as ionic conductive agents. Therefore, the primer layer to which the fluorine-containing ion conductive agent is added is imparted with conductivity and functions as a conductive layer.
- a fixing belt fixing roller, fixing sleeve
- the surface layer of the fixing belt can be prevented from being charged and the slow current can be efficiently performed, so that offset is prevented and a clear image is obtained. Can be formed into a fixing belt excellent in image quality.
- colorless compounds such as potassium salts and lithium salts (in which M in the above formula is K or Li) are preferable.
- M in the above formula is K or Li
- the tubular base material constituting the fixing belt of the present invention is a tubular belt, a columnar or cylindrical roller, and a primer layer and a surface layer are provided on the outer periphery (see FIG. 1).
- the surface layer is the outermost layer of the fixing belt of the present invention and is provided in contact with the primer layer.
- another layer for example, an elastic layer for improving the fixing property of the color toner may be provided between the tubular substrate and the surface layer.
- a fixing roller composed of three layers of a tubular substrate, a primer layer, and a surface layer, and a fixing belt shown in FIG.
- a fixing sleeve composed of five layers of a tubular base material, a primer layer, an elastic layer, a primer layer, and a surface layer.
- primer layer (I) the primer layer in contact with the surface layer
- primer layer (II) the primer layer provided between the tubular substrate and the elastic layer in the fixing sleeve
- the primer layer (that is, the primer layer constituting the present invention) in which the fluorine-containing ion conductive agent is blended with the fluororesin B in claim 1 is the primer layer (I).
- the resin constituting the surface layer and primer layer (I) is mainly made of fluororesin. That is, the main component is a fluororesin, and preferably 50% by weight or more, more preferably 80% by weight or more is made of a fluororesin, but may contain other resins or the like as long as the gist of the present invention is not impaired. Moreover, the case where this resin consists only of a fluororesin is also included.
- the surface layer can be made excellent in releasability and wear resistance. And since the surface layer and the primer layer (I) are both composed mainly of a fluororesin, excellent adhesion between both layers can be obtained.
- the fluororesin constituting the surface layer and the primer layer (I) may be the same resin, and the adhesion between the surface layer and the primer layer (I) is maintained as long as the gist of the present invention is not impaired.
- the ranges may be different from each other.
- the fluororesin constituting the surface layer is referred to as fluororesin A
- the fluororesin constituting the primer layer (I) is referred to as fluororesin B.
- the invention according to claim 2 is characterized in that the fluorine-containing ionic conductive agent is at least one selected from the group consisting of potassium pentafluoroethanesulfonate, potassium trifluoromethanesulfonate, and lithium trifluoromethanesulfonate.
- the fluorine-containing ion conductive agent is preferably a potassium salt or a lithium salt. Examples of the potassium salt include potassium trifluoromethanesulfonate, potassium pentafluoroethanesulfonate, and heptafluoro.
- Examples include potassium propanesulfonate, potassium nonafluorobutanesulfonate, potassium bis (fluorosulfonylimide), potassium perfluoroalkyldisulfonate, and the like.
- Examples of the lithium salt include lithium trifluoromethanesulfonate, lithium pentafluoroethanesulfonate, lithium heptafluoropropanesulfonate, lithium nonafluorobutanesulfonate, bis (fluorosulfonylimide) lithium salt, and perfluoroalkyl.
- Examples include lithium disulfonate.
- potassium pentafluoroethanesulfonate potassium trifluoromethanesulfonate
- lithium trifluoromethanesulfonate can be cited as preferred fluorine-containing ionic conductive agents.
- fluorine-containing ion conductive agents are excellent not only in initial conductivity but also in conductivity after an endurance test.
- the invention described in claim 3 is characterized in that the blending ratio of the fluorine-containing ionic conductive agent is 1 to 40% by weight with respect to the total amount of the fluororesin B and the fluorine-containing ionic conductive agent.
- the fixing belt according to claim 2. When the blending ratio of the fluorine-containing ion conductive agent is less than 1% by weight with respect to the total amount of the fluororesin B and the fluorine-containing ion conductive agent, sufficient conductivity may not be imparted to the primer layer (I). In some cases, offset prevention may not be sufficient. On the other hand, if it exceeds 40% by weight, the adhesion with the surface layer is lowered, and the function as an adhesive layer may not be sufficient.
- the blending ratio of the fluorinated ion conductive agent is more preferably 3 to 40% by weight, and particularly preferably 5 to 40% by weight.
- the invention according to claim 4 is the fixing belt according to any one of claims 1 to 3, wherein the tubular base material is a metal or polyimide tube.
- a metal or a resin excellent in mechanical strength and heat resistance can be used. These are preferable because both mechanical strength and heat resistance are excellent.
- the metal include aluminum and SUS that are excellent in mechanical strength and corrosion resistance.
- polyimide is particularly preferable because both mechanical strength and heat resistance are excellent.
- a tube is the meaning containing both a pipe
- the invention according to claim 5 is the fixing belt according to any one of claims 1 to 4, further comprising an elastic layer between the primer layer and the tubular substrate.
- the present invention (Invention of Claim 1) can be applied to both the fixing roller and the fixing sleeve, but is particularly preferably applied to a fixing sleeve having an elastic layer.
- the elastic layer is a layer provided to give elasticity to the fixing belt, and is made of an elastic body such as silicone rubber. Since the fixing property of the color toner can be improved by imparting elasticity to the fixing belt, the fixing sleeve having the elastic layer is suitably used for a color copying machine, a color printer, and the like.
- the fixing belt of the present invention is a fixing belt that is excellent in the effect of preventing offset and the like, can form a clear image, and has excellent adhesion between the surface layer and other layers.
- FIG. 1 is a diagram schematically showing an example of a fixing belt of the present invention, and is a cross-sectional view orthogonal to the rotation axis of the fixing belt.
- FIG. 1A is an example of a fixing roller composed of a base material 1, a primer layer (I) 3, and a surface layer 5.
- 1B further includes a rubber elastic layer 4 between the base material 1 and the surface layer 5, a primer layer (I) 3 between the rubber elastic layer 4 and the surface layer 5,
- This is an example of a fixing sleeve having a primer layer (II) 31 between the rubber elastic layers 4 and having five layers.
- Such a fixing roller and a fixing sleeve are both included in the fixing belt of the present invention. The following description is applicable to both the fixing roller shown in FIG. 1A and the fixing sleeve shown in FIG. 1B unless otherwise specified.
- the substrate 1 is a cylindrical solid made of polyimide resin, that is, a polyimide tube.
- polyimide resin As described above, an endless belt made of polyimide resin or the like can also be used as the base material.
- other heat resistant resin such as polyamideimide resin, or a metal tube made of metal such as SUS or aluminum can be used.
- polyimide resin is preferable from the viewpoints of ease of manufacture, heat resistance, elastic modulus, strength, and the like.
- an organic solvent solution (polyimide varnish) of a polyimide precursor (polyamic acid) is applied to the outer peripheral surface of a metal cylindrical core body by a dispenser method or the like, and heated.
- a method of dehydrating and ring-closing the precursor to form a polyimide examples include a method of dehydrating and ring-closing the precursor to form a polyimide.
- the polyimide precursor preferably contains an appropriate amount of filler for improving thermal conductivity.
- the heating temperature is about 350 ° C. to 450 ° C.
- the polyimide varnish examples include U varnish S manufactured by Ube Industries, Ltd., and examples of the organic solvent include dimethylacetamide and N-methylpyrrolidone, but are not limited thereto.
- the film (polyimide tube) imidized from the core can be removed for use.
- the base material is a polyimide tube
- the thickness is preferably about 30 to 80 ⁇ m from the viewpoint of durability and elasticity.
- the surface layer 5 is made of a fluorine resin such as polytetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoroalkoxyethylene copolymer (PFA), or tetrafluoroethylene-hexafluoropropylene copolymer (FEP).
- PTFE polytetrafluoroethylene
- PFA tetrafluoroethylene-perfluoroalkoxyethylene copolymer
- FEP tetrafluoroethylene-hexafluoropropylene copolymer
- the thickness of the surface layer 5 is preferably 1 to 50 ⁇ m, more preferably 2 to 35 ⁇ m, and still more preferably 3 to 25 ⁇ m. If the surface layer 5 (fluorine resin layer) is too thin, the durability is inferior, and as the number of copies increases, there is a risk that it will be worn out earlier and the releasability may be impaired. If the surface layer 5 is too thick, the heat conductivity of the entire fixing belt tends to decrease and the fixing property tends to decrease.
- the primer layer (I) 3 is made of a fluororesin containing a fluorine-containing ion conductive agent.
- a fluorine-containing ion conductive agent one compound selected from the fluorine-containing ion conductive agents in the above examples may be used, or a mixture of two or more compounds may be used.
- Examples of the fluororesin constituting the primer layer (I) 3 include PTFE, PFA, FEP and the like, as in the case of the surface layer 5, and it is preferable to use PTFE or PFA from the viewpoint of heat resistance. Moreover, you may use the kind of fluororesin different from the surface layer 5.
- FIG. 5 PTFE can be used for the surface layer 5 and FEP can be used for the primer layer (I) 3.
- a fluororesin that does not cause such a problem.
- the thickness of the primer layer (I) 3 is preferably 1 to 10 ⁇ m. If the primer layer (I) 3 is too thin, the effects as an adhesive layer and a conductive layer may not be sufficiently obtained. On the other hand, if the primer layer (I) 3 is too thick, the thermal conductivity of the entire fixing belt is lowered, and the fixability may be lowered.
- Examples of the material constituting the rubber elastic layer 4 provided in the fixing sleeve of FIG. 1B include silicone rubber and fluorine rubber. Silicone rubber is preferably used from the viewpoint of heat resistance and durability. It is done.
- Examples of the resin constituting the primer layer 31 (II) include rubber, resin, and fluororesin.
- a filler other than the fluorine-containing ion conductive agent may be added for the purpose of improving thermal conductivity.
- an inorganic filler such as titanium oxide, silicon carbide, boron nitride, silica or alumina is preferably used because of its good thermal conductivity.
- the addition amount is set in a range in which these problems do not occur.
- carbon black powder or the like can be added, but if the amount of carbon black powder added is large as described above, problems such as poor adhesion and impaired appearance occur. 1% by weight or less).
- the mechanical strength of the primer layer tends to decrease. It is preferable to make the range in which no occurs.
- the method for producing the fixing belt of the present invention is not particularly limited.
- the fixing belt can be produced by sequentially performing 1) to 5).
- the base material 1 is formed as described above (in the case of polyimide resin).
- the primer layer (II) 31 and the rubber elastic layer 4 are further formed on the base material 1 according to a known method or the like.
- the outer peripheral surface of the substrate 1 or the rubber elastic layer 4 is polished to adjust the outer diameter and shape.
- a fluororesin (for example, PFA) and a fluorine-containing ionic conductive agent constituting the primer layer (I) 3 are dispersed and dissolved in a dispersion medium such as water to prepare a fluororesin dispersion.
- the fluororesin applied by heat treatment is sintered to form the primer layer (I) 3.
- a fluororesin (for example, PFA) dispersion is applied to the surface of the formed primer layer (I) 3, and heat treated and sintered to form a surface layer.
- the dispersion of the fluororesin used for the production of the primer layer (I) 3 can be produced by blending an aqueous solution of a fluorinated ion conductive agent with an aqueous dispersion of a fluororesin.
- a dispersing agent for improving the dispersion state, a surfactant, and a coupling agent for improving familiarity with the inorganic filler can be added to the aqueous dispersion.
- the fixing belt of the present invention is used in a fixing unit of various image forming apparatuses.
- a heating source is provided in the fixing belt, and the fixing belt is opposed to and pressed against a pressure roller made of a rubber roller or the like. Is heated and melted and fixed on the transfer object.
- Examples 1 to 48, Comparative Example A fixing belt (fixing sleeve) was prepared according to the method and conditions described below, and the surface resistance of the primer layer, the peel strength of the elastic layer and the surface layer were measured, and the offset evaluation and paper passing durability test were performed. Went. First, the preparation method and conditions of the fixing belt will be described.
- a cylinder made of polyimide resin having an outer diameter of 18.2 mm and a length of 233 mm is immersed in X-34-173 (manufactured by Shin-Etsu Chemical Co., Ltd., silicone resin primer: primer solution (a)) and pulled up (dipping method) ), The primer solution (a) was applied to the outer peripheral surface of the substrate. Thereafter, the primer solution (a) was solidified by heating at 200 ° C. for 30 minutes, and a primer layer (II) having a thickness of 4 ⁇ m was formed on the outer periphery of the substrate.
- primer layer (I) An elastic layer is formed as described above in primer liquid (b) prepared by blending the following conductive agents with PL-992CL (a DuPont fluorine-based primer) in the blending amounts shown in Tables 1 to 6.
- the belt thus obtained was dipped and pulled up (dipping method), and the primer liquid (b) was applied to the outer peripheral surface of the elastic layer.
- the primer layer (I) having a thickness of 4 ⁇ m was formed on the outer periphery of the elastic layer by sintering at 220 ° C. for 30 minutes.
- Example 1 and Examples 13 to 15 Potassium trifluoromethanesulfonate (chemical formula “CF3SO3K”): EF-12 manufactured by Mitsubishi Materials Corporation Example 2 and Examples 16 to 18: Lithium trifluoromethanesulfonate (chemical formula “CF3SO3Li”): EF-15 manufactured by Mitsubishi Materials Corporation Example 3 and Examples 19 to 21: (CF3SO2) 2NK: EF-N112 manufactured by Mitsubishi Materials Corporation Example 4 and Examples 22 to 24: (CF3SO2) 2NLi: EF-N115 manufactured by Mitsubishi Materials Corporation Example 5 and Examples 25 to 27: CF2 (CF2SO2) 2NK: EF-N302 manufactured by Mitsubishi Materials Corporation Example 6 and Examples 28 to 30: CF2 (CF2SO2) 2NLi: EF-N305 manufactured by Mitsubishi Materials Corporation Example 7 and Examples 31 to 33: (C4F
- Paper passing durability test A fixing belt was incorporated into a printer, paper passing was confirmed, and evaluation was performed according to the following criteria. The results are shown in Tables 1-6. ⁇ : No peeling occurs as a result of paper passing. X: Peeling occurs as a result of paper passing.
- FIG. 4 is a cross-sectional view orthogonal to the rotation axis of an example of a fixing belt.
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Abstract
Description
チューブ状基材、最外層に設けられフッ素樹脂Aよりなる表層、及び前記表層に接して設けられるプライマー層を有し、
前記プライマー層は、フッ素樹脂Bと含フッ素イオン導電剤を含有していることを特徴とする定着ベルトである。
1)前記(ポリイミド樹脂の場合)のようにして基材1を形成する。定着スリーブの製造の場合は、さらに、基材1上にプライマー層(II)31及びゴム弾性層4を、公知の方法等に従って形成する。
2)基材1又はゴム弾性層4の外周表面を研磨して外径や形状を整える。
3)プライマー層(I)3を構成するフッ素樹脂(例えば、PFA)及び含フッ素イオン導電剤を、水等の分散媒に分散、溶解してフッ素樹脂の分散液を作製し、この分散液を外周表面が研磨された基材1又はゴム弾性層4の上に塗布する。
4)熱処理して塗布されたフッ素樹脂を焼結し、プライマー層(I)3を形成する。
5)形成されたプライマー層(I)3の表面に、フッ素樹脂(例えば、PFA)の分散液を塗布し、熱処理して焼結し表層を形成する。
以下に述べる方法、条件で、定着ベルト(定着スリーブ)を作製し、プライマー層の表面抵抗、弾性層と表層のピール強度を測定し、オフセット評価及び通紙耐久試験を行った。先ず、定着ベルトの作製方法、条件等について述べる。
外径18.2mm、長さ233mmのポリイミド樹脂製の円柱を、X-34-173(信越化学社製、シリコーンレジン系プライマー:プライマー液(a)と言う。)に浸漬して引き揚げ(ディッピング法)、基材の外周面にプライマー液(a)を塗布した。その後、200℃で30分間加熱してプライマー液(a)を固体化し、基材の外周に厚さ4μmのプライマー層(II)を形成した。
弾性層を形成するシリコーンゴムとしては、X-34-3045(信越化学社製シリコーンゴム)を用いた。ディスペンサー法で厚み320μmとなるように塗布した。
PL-992CL(デュポン社製フッ素系プライマー)に、以下に示す導電剤を、表1~6に示す配合量で配合して作製したプライマー液(b)に、前記のようにして弾性層が形成されたベルトを浸漬して引き揚げ(ディッピング法)、弾性層の外周面にプライマー液(b)を塗布した。その後、220℃で30分間加熱して焼結し、弾性層の外周に厚さ4μmのプライマー層(I)を形成した。
比較例 : カーボンブラック:ライオン社製ライオンペースト(表中では「カーボンブラック」と示す。)
実施例1及び実施例13~15: トリフルオロメタンスルホン酸カリウム(化学式「CF3SO3K」):三菱マテリアル社製EF-12
実施例2及び実施例16~18: トリフルオロメタンスルホン酸リチウム(化学式「CF3SO3Li」):三菱マテリアル社製EF-15
実施例3及び実施例19~21: (CF3SO2)2NK:三菱マテリアル社製EF-N112
実施例4及び実施例22~24: (CF3SO2)2NLi:三菱マテリアル社製EF-N115
実施例5及び実施例25~27: CF2(CF2SO2)2NK:三菱マテリアル社製EF-N302
実施例6及び実施例28~30: CF2(CF2SO2)2NLi:三菱マテリアル社製EF-N305
実施例7及び実施例31~33: (C4F9SO2)2NK:三菱マテリアル社製EF-N442
実施例8及び実施例34~36: (C4F9SO2)2NLi:三菱マテリアル社製EF-N445
実施例9及び実施例37~39: C2F5SO3K:三菱マテリアル社製EF-22
実施例10及び実施例40~42: C3F7SO3K:三菱マテリアル社製EF-32
実施例11及び実施例43~45: C4F9SO3K:三菱マテリアル社製EF-42
実施例12及び実施例46~48: LiO3S(CF2)3SO3Li:三菱マテリアル社製EF-3005
(実施例については、表中では化学式で示す。)
PFAの分散液であるEM-565CL(デュポン社製)を、前記のようにして形成したプライマー層(II)の外周にディッピング法にて10μmの厚さに塗布し、360℃で30分保持して焼成して表層を形成し、実施例と比較例の定着ベルトを完成させた。
○:2重画像を生じない。
×:2重画像が生じる。
○:通紙を行った結果剥離を生じない。
×:通紙を行った結果剥離を生じる。
○:色ムラが確認できない。
×:色ムラが確認できる。
3 プライマー層(I)
31 プライマー層(II)
4 弾性層
5 表層
Claims (5)
- チューブ状基材、最外層に設けられフッ素樹脂Aよりなる表層、及び前記表層に接して設けられるプライマー層を有し、
前記プライマー層は、フッ素樹脂Bと含フッ素イオン導電剤を含有していることを特徴とする定着ベルト。 - 前記含フッ素イオン導電剤が、ペンタフルオロエタンスルホン酸カリウム、トリフルオロメタンスルホン酸カリウム及びトリフルオロメタンスルホン酸リチウムからなる群より選ばれる1種以上であることを特徴とする請求項1に記載の定着ベルト。
- 前記含フッ素イオン導電剤の配合割合がフッ素樹脂Bと含フッ素イオン導電剤の合計量に対して、1~40重量%であることを特徴とする請求項1又は請求項2に記載の定着ベルト。
- 前記チューブ状基材が、金属又はポリイミドのチューブであることを特徴とする請求項1ないし請求項3のいずれか1項に記載の定着ベルト。
- 前記プライマー層とチューブ状基材の間に、さらに弾性層を有することを特徴とする請求項1ないし請求項4のいずれか1項に記載の定着ベルト。
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JP2011540635A JP5192084B2 (ja) | 2010-08-31 | 2011-06-22 | 定着ベルト |
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WO2015093000A1 (ja) * | 2013-12-17 | 2015-06-25 | キヤノン株式会社 | 電子写真用部材、定着装置及び、電子写真画像形成装置 |
JP2015227988A (ja) * | 2014-06-02 | 2015-12-17 | 富士ゼロックス株式会社 | 転写定着ベルト、転写定着ユニット、及び画像形成装置 |
JP2016167022A (ja) * | 2015-03-10 | 2016-09-15 | 富士ゼロックス株式会社 | 定着装置、画像形成装置、及び定着用環状体 |
JPWO2021256037A1 (ja) * | 2020-06-18 | 2021-12-23 |
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JP5730039B2 (ja) * | 2011-01-27 | 2015-06-03 | キヤノン株式会社 | 定着用回転体及びこの定着用回転体を搭載する定着装置 |
JP5762022B2 (ja) * | 2011-01-31 | 2015-08-12 | キヤノン株式会社 | 加圧ローラ及びこの加圧ローラを搭載する定着装置 |
US9367008B2 (en) * | 2013-05-31 | 2016-06-14 | Canon Kabushiki Kaisha | Electrophotographic member and heat fixing assembly |
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CN102782590B (zh) | 2015-09-16 |
JPWO2012029380A1 (ja) | 2013-10-28 |
CN102782590A (zh) | 2012-11-14 |
US20120315418A1 (en) | 2012-12-13 |
JP5192084B2 (ja) | 2013-05-08 |
US9588470B2 (en) | 2017-03-07 |
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