WO2011039975A1 - エンドレス金属ベルト、電子写真用エンドレスベルト、定着装置および電子写真画像形成装置 - Google Patents
エンドレス金属ベルト、電子写真用エンドレスベルト、定着装置および電子写真画像形成装置 Download PDFInfo
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- WO2011039975A1 WO2011039975A1 PCT/JP2010/005734 JP2010005734W WO2011039975A1 WO 2011039975 A1 WO2011039975 A1 WO 2011039975A1 JP 2010005734 W JP2010005734 W JP 2010005734W WO 2011039975 A1 WO2011039975 A1 WO 2011039975A1
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- belt
- metal belt
- endless
- endless metal
- fixing
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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
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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
- G03G15/2064—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat combined with pressure
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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
- G03G2215/2003—Structural features of the fixing device
- G03G2215/2016—Heating belt
- G03G2215/2035—Heating belt the fixing nip having a stationary belt support member opposing a pressure member
Definitions
- the present invention relates to an endless metal belt, an endless belt for electrophotography, a heat fixing device, and an electrophotographic image forming apparatus.
- an endless belt is used as a fixing device that fixes an unfixed toner image transferred onto the surface of a recording material such as paper by heat and pressure.
- an endless belt an electrophotographic endless belt using an endless metal belt such as stainless steel, nickel, aluminum, or copper as a base layer is known.
- An electrophotographic endless belt (hereinafter referred to as a “fixing belt”) used in such a fixing device is generally driven to rotate using a plurality of rollers in the electrophotographic image forming apparatus. .
- a force that biases the fixing belt in the thrust direction hereinafter, also referred to as “shift movement force” may be generated in the rotating fixing belt.
- Patent Document 1 it is proposed to provide a lubricating grease or a solid lubricating layer in order to improve the slidability between the end face of the metal belt and the end regulating member.
- the present inventors examined the invention described in Patent Document 1. As a result, even if the lubricity with the end portion restricting member is improved and the slidability is improved, cracks may occur due to repeated bending and rubbing with the end portion restricting member. Therefore, the present inventor has recognized that it is important to more reliably prevent the occurrence of cracks at the end of the fixing belt in order to further increase the speed and durability of the image forming apparatus. .
- an endless metal belt has an end region surrounded by an outer surface edge and an inner surface edge of the endless metal belt, and the end region is formed on the edge.
- An endless belt is provided having a ridge extending along.
- an electrophotographic endless belt having the above endless metal belt and a toner release layer formed on the surface thereof.
- a fixing device for electrophotography which includes a heating member and a pressure member disposed opposite to the heating member, wherein either the heating member or the pressure member. Either or both of them have the electrophotographic endless belt, and the fixing device is arranged to be in contact with the ridge of the end region of the endless metal belt of the electrophotographic endless belt. It further has a member.
- an electrophotographic image forming apparatus provided with the above-described fixing device is provided.
- the endless metal belt is in contact with the end regulating member by a ridge with a small internal stress generated by bending. Therefore, the generation and progression of cracks due to repeated bending and rubbing with the end portion regulating member can be suppressed, and durability is improved.
- FIG. 3 is a schematic diagram illustrating an example of a layer configuration of a fixing belt of the present invention. It is explanatory drawing of the contact state of the one side edge part of a metal belt, and an edge part control member.
- FIG. 2A is an explanatory diagram of a contact state between one end of a conventional metal belt and an end regulating member. It is explanatory drawing of the contact state of the one side edge part of a metal belt, and an edge part control member.
- FIG. 2B is an explanatory view of a contact state between one end portion of the metal belt according to the present invention and the end portion regulating member. It is a graph which shows the internal stress in a metal belt end surface. It is a figure which shows the example of the end surface shape of the metal belt in this invention.
- FIG. 1 is a schematic configuration diagram of a fixing device using a metal belt 1 according to the present invention.
- 1 is a schematic diagram illustrating an example of a configuration of a heat fixing type image heating apparatus.
- FIG. 5 is a detailed view of an end portion regulating portion of the fixing belt.
- FIG. 6 is a view showing an end face of a metal belt in Comparative Example 1.
- the endless metal belt according to the present invention has a ridge in a direction along the edge in an end region surrounded by the edge of the outer surface and the edge of the inner surface.
- FIG. 2A is an enlarged cross-sectional view of a contact portion between one end of the conventional endless metal belt 1 and the end regulating member 4.
- FIG. 2B is an enlarged cross-sectional view of a contact portion between one end portion of the endless metal belt 1 according to the present invention and the end portion regulating member 4.
- the end portion restricting member 4 here is a member such as a flange or a roller that restricts the endless metal belt from moving toward the end portion.
- the endless metal belt 1 has a “shifting force” in the thrust direction. Therefore, it rotates in contact with the end regulating member 4 while bending. As a result, the endless metal belt 1 receives sliding resistance from the end regulating member 4.
- FIG. 3 is a graph showing the state of internal stress in the thickness direction of the endless belt when the endless metal belt 1 is bent.
- tensile stress is generated on the outer peripheral side of the endless metal belt
- compressive stress is generated on the inner peripheral side of the endless metal belt.
- the internal stress is minimized near the center in the thickness direction of the endless metal belt.
- the internal stress increases with increasing distance from the center in the thickness direction of the endless metal belt toward the outer periphery and toward the inner periphery. Therefore, the tensile stress becomes maximum at the edge portion of the outer surface of the endless metal belt, and the compressive stress becomes maximum at the edge portion of the inner surface of the endless metal belt.
- the end surface of the cut endless metal belt has been polished for the purpose of removing burrs and cracks. Therefore, as shown in FIG. 2A, the end region 21 surrounded by the edge 5 on the outer surface and the edge 6 on the inner surface of the endless metal belt is flat.
- the endless metal belt 1 has the edge portion 5 on the outer surface of the endless metal belt and the edge portion on the inner surface of the endless metal belt 1 where the internal stress is the largest due to repeated bending and rubbing with the end portion regulating member 4. 6 and cracks are likely to occur.
- the “ridge” refers to a convex portion that continues between the edge portion on the outer surface and the edge portion on the inner surface of the endless metal belt without any break toward the outside in the width direction of the belt.
- the ridge has a small internal stress because the compressive stress and the tensile stress cancel each other.
- the edge portion 5 on the outer surface and the edge portion 6 on the inner surface of the endless metal belt which are portions having a large internal stress, do not receive sliding resistance from the end portion regulating member 4. Therefore, the occurrence of cracks in the end portion of the endless metal belt when the end portion of the endless metal belt comes into contact with the end portion regulating member can be well suppressed.
- an image forming apparatus using a fixing belt 7 having an endless metal belt end face having a ridge between the outer edge portion 5 and the inner edge portion 6 can achieve high speed and high durability.
- 4A-4C show three embodiments of an endless metal belt according to the present invention. That is, the endless metal belt 1 has ridges 43 having different shapes in regions 41 surrounded by the edge portion 5 on the outer surface and the edge portion 6 on the inner surface.
- FIG. 1 is a cross-sectional view in the width direction of a portion of a fixing belt (endless belt for electrophotography) 7 using an endless metal belt according to the present invention that faces a pressure roller.
- the fixing belt 7 includes a laminate of the endless metal belt 1 according to the present invention, the elastic layer 2, and the toner release layer 3.
- the endless metal belt 1 includes stainless steel (SUS) excellent in heat resistance and high thermal conductivity, nickel, aluminum, copper, or an alloy thereof.
- the total thickness of the endless metal belt 1 is preferably 20 ⁇ m or more and 200 ⁇ m or less.
- the elastic layer 2 may or may not be provided.
- heat transfer can be ensured by covering the heated image at the nip portion, and the restoring force of the endless metal belt 1 can be supplemented to reduce fatigue due to rotation and bending.
- the adhesion of the surface of the fixing belt release layer to the surface of the unfixed toner image is increased, and heat can be efficiently transmitted.
- the fixing belt 7 provided with the elastic layer 2 is particularly suitable for heat fixing of a color image having a large amount of unfixed toner.
- the material of the elastic layer 2 is not particularly limited, and a material having good heat resistance and good thermal conductivity may be selected.
- the elastic layer 2 preferably contains at least one selected from the group consisting of silicone rubber, fluorine rubber and fluorosilicone rubber, and silicone rubber is particularly preferable. Specific examples of the material forming the silicone rubber are shown below. Polydimethylsiloxane, polymethyltrifluoropropylsiloxane, polymethylvinylsiloxane, polytrifluoropropylvinylsiloxane, polymethylphenylsiloxane, polyphenylvinylsiloxane, copolymers of these polysiloxanes, and the like.
- the elastic layer 2 may be silica, calcium carbonate, quartz powder, zirconium silicate, clay (aluminum silicate), talc (hydrous magnesium silicate), alumina (aluminum oxide), bengara (iron oxide). ) Or the like.
- the thickness of the elastic layer 2 is preferably 10 ⁇ m or more and 1000 ⁇ m or less, and more preferably 50 ⁇ m or more and 500 ⁇ m or less because good fixed image quality can be obtained.
- a solid image is formed over a large area on the recording material P.
- the heating surface (release layer 3) cannot be deformed along the uneven surface of the recording material or the uneven surface of the toner layer, uneven heating will occur, and uneven gloss will occur in the image where the heat transfer amount is large and small. To do. That is, the glossiness is high at the portion where the heat transfer amount is large, and the glossiness is low at the portion where the heat transfer amount is small.
- the elastic layer 2 If the elastic layer 2 is too thin, the heated surface cannot be deformed due to the uneven shape of the recording material or toner layer, and image gloss unevenness may occur. On the other hand, if the elastic layer 2 is too thick, the thermal resistance and heat capacity of the elastic layer 2 may increase and it may be difficult to realize a quick start.
- the hardness (JIS K 6301) of the elastic layer 2 is preferably 3 ° or more and 60 ° or less, and more preferably 5 ° or more and 45 ° or less, since generation of uneven image gloss is sufficiently suppressed and good fixed image quality is obtained. .
- the thermal conductivity ⁇ of the elastic layer 2 is preferably 3.3 ⁇ 10 ⁇ 1 [W / m ⁇ K] or more and 8.4 ⁇ 10 ⁇ 1 [W / m ⁇ K] or less.
- Such an elastic layer 2 can be formed by the methods shown in the following a) to d).
- the material of the toner release layer 3 is illustrated below.
- Fluororesin such as PFA (tetrafluoroethylene / perfluoroalkyl ether copolymer), PTFE (polytetrafluoroethylene), FEP (tetrafluoroethylene / hexafluoropropylene copolymer), silicone resin, fluorosilicone rubber, fluororubber , Silicone rubber etc.
- PFA is preferable because toner or the like hardly adheres thereto.
- the release layer may contain a conductive agent such as carbon or tin oxide, if necessary.
- a standard of the thickness of the toner release layer 3 is 1 ⁇ m or more and 100 ⁇ m or less.
- Such a toner release layer 3 can be formed by a known method.
- a fluororesin-based material it may be formed by a method of applying, drying and baking a paint prepared by dispersing a fluororesin powder, or a method of covering and adhering a film previously formed on a tube.
- a rubber material it may be formed by a method of injecting a liquid material into a mold and vulcanizing and curing, a method of vulcanizing and curing after extrusion molding, a method of vulcanizing and curing after injection molding, or the like.
- FIG. 5 is an axial sectional view of a fixing device for an electrophotographic image forming apparatus using the endless metal belt according to the present invention as a fixing belt.
- the heater (heating member) 8 is a ceramic heater or the like using alumina, aluminum nitride or the like as a substrate.
- the heat insulating stay holder 9 holds the heater 8 on the lower surface side, and the fixing belt 7 is fitted to the heat insulating stay holder 9 at both left and right end portions, and is provided with an end portion regulating member 4 that can come into contact with the end surface ridge portion. ing.
- the end regulating member 4 is a member that regulates the displacement in the width direction when the electrophotographic endless belt is running.
- the end regulating member 4 is an outer receiving type having a spring receiving seat portion 4a provided integrally protruding on the outer surface side and a notched annular guard portion 4b provided protruding integrally on the inner surface side.
- Reference numeral 10 denotes a heat resistant and elastic pressure roller as a pressure member.
- the pressure roller 10 includes a cored bar 11 and an elastic layer 2, and both ends of the cored bar 11 are rotatably supported by bearings between left and right side plates of a device chassis (not shown).
- Reference numeral 12 denotes a pressure roller rotation driving gear fixed to one end side of the pressure roller core metal.
- the fixing belt 7 is disposed on the upper side of the pressure roller 10 so as to face the pressure roller 10 with the heater 8 facing downward.
- the fixing belt 7 is brought into a state where the fixing belt 7 is uniformly pressed against the pressure roller 10 by pressing the spring receiving seat portion 4a of the end regulating member 4 on the left and right end portions side with a pressure spring 13 with a predetermined pressure.
- the lower surface of the heater 8 is pressed against the upper surface of the pressure roller 10 via the fixing belt 7, and a fixing nip portion N having a predetermined width is formed between the fixing belt 7 and the pressure roller 10.
- the fixing belt 7 receives a moving force toward the thrust direction during the rotating operation due to variations in component accuracy, uneven temperature distribution in the longitudinal direction of the ceramic heater 14, and the like, and moves in either the left or right direction.
- the end surface of the fixing belt 7 is abutted against a regulating member such as a flange member.
- the end restricting member 4 is a restricting member for that purpose.
- the ridge of the left end surface or the right end surface of the fixing belt 7 is the end portion regulating member 4. It abuts on the end face of. Since the edge portion 5 on the outer surface and the edge portion 6 on the inner surface where the internal stress is large do not contact the end portion regulating member 4, they do not receive sliding resistance. As a result, it is possible to better suppress the occurrence of cracks at the end of the fixing belt 7.
- FIG. 8 shows the fixing belt 7 used in the first embodiment.
- the fixing belt 7 includes an endless metal belt 1 and an elastic layer 2 and a release layer 3 laminated thereon.
- the endless metal belt 1 was made of stainless steel (SUS) and had an inner diameter of 24 mm, a wall thickness of 30 ⁇ m, and a length of 240 mm.
- SUS stainless steel
- the end face of the endless metal belt is processed into a shape having a ridge between the edge portion 5 on the outer surface and the edge portion 6 on the inner surface by the cutting means, and is increased in the longitudinal direction at the center position of the wall thickness.
- a convex shape with a height of H 10 ⁇ m was used. This cutting means will be described with reference to FIG.
- the endless metal belt 1 is fixed from the inside of the endless metal belt by a holding mechanism (not shown).
- the holding mechanism is rotatable and has an inner blade 18 that is a round blade.
- An outer blade 19 that is a rotating round blade is provided on the outer peripheral side of the endless metal belt 1.
- the inner cutter 18 and the outer cutter 19, which are a pair of rotating round blades, are arranged at a minute interval so that the blade surfaces (the inner cutter blade surface 20, the outer cutter blade surface 21) are in contact with each other. It is arranged with an inclination angle 22 with respect to the inner blade.
- the endless metal belt 1 was cut with the pair of rotating round blades.
- a 300 ⁇ m silicone rubber layer (manufactured by GE Toshiba Silicone) is laminated as the elastic layer 2, and a 20 ⁇ m PFA tube (manufactured by Gunze) is further laminated as a toner release layer 3 via a primer (manufactured by Toray Dow Corning).
- a fixing belt as shown in FIG. 8 was produced. Two fixing belts 7 were prepared and subjected to the following durability test. That is, the fixing belt 7 was attached to an image heating fixing apparatus as shown in FIG.
- reference numerals 15, 16 and 17 denote a belt guide member, a sliding plate and a pressurizing rigid stay, respectively, and t denotes toner.
- the ceramic heater 14 at the time of fixing was set to 180 ° C.
- the unfixed toner image was fixed on the recording material P by the heat from the ceramic heater and the pressure applied to the nip.
- Fixing was performed in an intermittent mode that pauses for 1 second every time two sheets were used, and the number of sheets until a crack or break occurred was measured. Table 1 shows the result of the durability test of each fixing belt.
- FIG. 10 shows the fixing belt 7 used in Comparative Example 1.
- the end face of the endless metal belt was processed by the cutting means shown in FIG. 9 in the same manner as in Example 1, and then polished by sandpaper (# 600) to obtain a planar shape.
- two fixing belts were produced in the same manner as in Example 1 except that the end face of the endless metal belt was flat, and the same durability test as in Example 1 was performed. Table 1 shows the result of the durability test of each fixing belt.
- the endless metal belt end face has a higher durability with a fixing belt having a ridge between the edge portion of the outer surface and the edge portion of the inner surface. This is because the belt end surface has a ridge, and the belt end surface comes into contact with a portion where the internal stress generated by bending is small in the rubbing portion with the end portion regulating member. Thereby, it is considered that a fixing belt with improved durability was obtained by suppressing the occurrence and progress of cracks due to repeated bending and rubbing with the end regulating member.
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Abstract
Description
一方、図2Bに示すように、エンドレス金属ベルト1の端面、すなわち、エンドレス金属ベルトの外表面のエッジ5と内表面のエッジとで囲まれる領域21が尾根23を有するような形状とした場合、エンドレス金属ベルトはその尾根23で端部規制部材4と接触することになる。ここで、「尾根」とは、エンドレス金属ベルトの外表面のエッジ部と内表面のエッジ部の間のベルトの幅方向外側への切れ目なく続く凸部をいう。そして、当該尾根は前記したように圧縮応力と引張応力とが打ち消し合って内部応力が小さい。また、内部応力が大きい部分であるエンドレス金属ベルトの外表面のエッジ部5及び内表面のエッジ部6は端部規制部材4からの摺動抵抗を受けることがない。そのため、エンドレス金属ベルトの端部が端部規制部材と接触したときの、当該エンドレス金属ベルトの端部への亀裂の発生を良く抑えることができる。これにより例えばエンドレス金属ベルト端面が外表面のエッジ部5と内表面のエッジ部6の間に尾根を有する定着ベルト7を使用した画像形成装置では、高速化・高耐久化を実現することが可能となる。
図4A~4Cに、本発明に係るエンドレス金属ベルトの3つの態様を示す。即ち、エンドレス金属ベルト1の、外表面のエッジ部5と内表面のエッジ部6とで囲まれる領域41に各々異なる形状の尾根43を有している。
ア)液状のシリコーンゴム等の材料をブレードコート法等の手段によって金属層1上に塗布して加熱硬化する方法、
イ)液状のシリコーンゴム等の材料を成形型に注入し加硫硬化する方法、
ウ)押出成形後に加硫硬化する方法、
エ)射出成形後に加硫硬化する方法等。
特にPFAは、トナー等が付着しにくいため好ましい。離型層には、必要に応じて、カーボン、酸化スズ等の導電剤等を含有させてもよい。トナー離型層3の厚さの目安としては1μm以上100μm以下である。
加熱ヒータ(加熱部材)8は、アルミナや窒化アルミ等を基板に用いたセラミックヒータ等である。断熱ステイホルダー9は、加熱ヒータ8を下面側に保持し、定着ベルト7は左右両端部において断熱ステイホルダー9に嵌着され、端面尾根部において当接可能な、端部規制部材4が設けられている。
端部規制部材4は、該電子写真用エンドレスベルトが走行しているときに幅方向に片寄ることを規制する部材である。端部規制部材4は、外面側に一体に突出させて設けたバネ受け座部分4aと、内面側に一体に突出させて設けた欠円環状ガード部4bとを有する外受け型である。10は加圧部材としての耐熱性・弾性加圧ローラである。加圧ローラ10は、芯金11と弾性層2からなり、芯金11の両端部を不図示の装置シャーシの左右側板間に回転自由に軸受保持されている。12は、加圧ローラ芯金の一端部側に固着された加圧ローラ回転駆動ギアである。定着ベルト7は、上記の加圧ローラ10の上側に加熱ヒータ8側を下向きにして加圧ローラ10に対向配置されている。そして、定着ベルト7は、左右両端部側の端部規制部材4のバネ受け座部分4aを加圧バネ13で所定の圧力で押圧することによって、加圧ローラ10に均等に圧接された状態にされている。これにより、加熱ヒータ8の下面が定着ベルト7を介して加圧ローラ10の上面に圧接されて、定着ベルト7と加圧ローラ10との間に所定幅の定着ニップ部Nが形成される。定着ベルト7は、部品精度のバラツキや、セラミックヒータ14の長手方向の温度分布ムラ等により回転動作時にスラスト方向に寄り移動力を受け、左右の何れかの方向に移動する。このスラスト方向の寄りを規制するためには、定着ベルト7の端面をフランジ部材等の規制部材に突き当てて規制するような構成が必要となる。端部規制部材4はそのための規制部材である。ここで、定着ベルト7が、加圧ローラ10の回転に伴って従動回転し、スラスト方向に寄ったとしても、その寄りは、定着ベルト7の左側端面または右側端面の尾根が端部規制部材4の端面に当接する。そして、内部応力が大きい外表面のエッジ部5及び内表面のエッジ部6は端部規制部材4に当接しないため、摺動抵抗を受けない。その結果として、定着ベルト7の端部に亀裂が発生することをより良く抑えることができる。
図8に実施例1で使用した定着ベルト7を示す。定着ベルト7は、エンドレス金属ベルト1及びその上に積層された弾性層2及び離型層3からなる。エンドレス金属ベルト1はステンレス鋼(SUS)から製作され、内径24mm、肉厚30μm、長さ240mmを有していた。図8に示すように、エンドレス金属ベルト端面は、切断手段により外表面のエッジ部5と内表面のエッジ部6の間に尾根を有する形状に加工され、肉厚の中心位置で長手方向に高さH=10μmの凸型にした。この切断手段としては図9を参照しながら説明する。エンドレス金属ベルト1はエンドレス金属ベルト内部より不図示である保持機構により固定する。保持機構は回転可能であり、丸刃である内刃18を有する。またエンドレス金属ベルト1外周方向側には回転丸刃である外刃19がある。この一対の回転丸刃である内刃18及び外刃19は、刃面同士(内刃刃面20、外刃刃面21)が側面同士で接触するように微小間隔をもって配置されかつ外刃が内刃に対して傾斜角22をもって配置されている。これら一対の回転丸刃によりエンドレス金属ベルト1の切断を実施した。
すなわち、定着ベルト7を、図6に示すような像加熱定着装置に装着し、耐久テストを行なった。図6において、15、16および17はそれぞれベルトガイド部材、摺動板及び加圧用剛性ステイを示し、tはトナーを示す。耐久テストにおいて、定着時のセラミックヒータ14を180℃に設定した。セラミックヒータからの熱とニップに加えられた圧力とで、被記録材Pに未定着トナー画像を定着させた。定着は、2枚実施毎に1秒休止する間欠モードで行い、亀裂または破断が発生するまでの枚数を測定した。各定着ベルトの耐久テストの結果を表1に示す。
図10に比較例1で使用した定着ベルト7を示す。エンドレス金属ベルト端面は、実施例1と同様に図9に示す切断手段により加工した後、サンドペーパー(#600)により研磨して平面形状にした。本比較例において、エンドレス金属ベルト端面の形状を平面とした以外は実施例1と同様にして2枚の定着ベルトを作製し、実施例1と同様な耐久テストを行なった。各定着ベルトの耐久テストの結果を表1に示す。
Claims (4)
- エンドレス金属ベルトであって、該エンドレス金属ベルトの外表面のエッジと内表面のエッジとで囲まれる端部領域を有し、
該端部領域は、該エッジに沿って延びる尾根を有していることを特徴とするエンドレス金属ベルト。 - 請求項1に記載のエンドレス金属ベルトと、トナー離型層とを有することを特徴とする電子写真用エンドレスベルト。
- 加熱部材と、該加熱部材と対向配置されている加圧部材とを有する電子写真用の定着装置であって、
該加熱部材及び該加圧部材から選ばれる少なくとも一つの部材が、請求項2に記載の電子写真用エンドレスベルトを有し、
該定着装置は、該電子写真用エンドレスベルトのエンドレス金属ベルトの端部領域の尾根と当接可能に配置されている端部規制部材をさらに有していることを特徴とする電子写真用の定着装置。 - 請求項3に記載の定着装置を具備していることを特徴とする電子写真画像形成装置。
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KR1020127010168A KR101427492B1 (ko) | 2009-09-30 | 2010-09-22 | 엔드리스 금속 벨트, 전자 사진용 엔드리스 벨트, 정착 장치 및 전자 사진 화상 형성 장치 |
EP10820100.5A EP2453313B1 (en) | 2009-09-30 | 2010-09-22 | Endless metal belt, endless belt for use in electrophotography, fixing device, and electrophotographic image-forming device |
US12/958,683 US8190075B2 (en) | 2009-09-30 | 2010-12-02 | Endless metallic belt, electrophotographic endless belt, fixing assembly, and electrophotographic image forming apparatus |
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JP6870333B2 (ja) * | 2016-03-18 | 2021-05-12 | 株式会社リコー | 無端ベルト、定着装置、画像形成装置、及び、無端ベルトの製造方法 |
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JP2004144833A (ja) | 2002-10-22 | 2004-05-20 | Canon Inc | 加熱装置 |
JP2005188712A (ja) * | 2003-12-26 | 2005-07-14 | Honda Motor Co Ltd | 無段変速機用金属ベルト、金属リングの製造方法および金属リングの形状測定方法 |
JP2009227333A (ja) | 2008-03-21 | 2009-10-08 | Chian Hua Liao | 多孔からの排気が可能な収納袋 |
JP2009237185A (ja) * | 2008-03-27 | 2009-10-15 | Seiko Epson Corp | 定着装置および画像形成装置 |
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JPH10228192A (ja) * | 1997-02-15 | 1998-08-25 | Canon Inc | 加熱用フィルム、加熱装置及び画像形成装置 |
JP3534033B2 (ja) * | 2000-02-29 | 2004-06-07 | 日産自動車株式会社 | 積層式金属ベルト用リングとその製造方法 |
JP4151204B2 (ja) * | 2000-07-19 | 2008-09-17 | コニカミノルタビジネステクノロジーズ株式会社 | 定着用ベルト及びベルト定着装置 |
JP4280664B2 (ja) * | 2004-03-31 | 2009-06-17 | キヤノン株式会社 | 像加熱装置 |
CN101046667A (zh) * | 2006-03-13 | 2007-10-03 | 株式会社理光 | 定影装置及包含该定影装置的图像形成装置 |
US7603068B2 (en) * | 2006-05-03 | 2009-10-13 | Kabushiki Kaisha Toshiba | Fixing apparatus for forming an image |
KR20080003542A (ko) * | 2006-07-03 | 2008-01-08 | 삼성전자주식회사 | 전자사진방식 화상형성장치의 정착기 |
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JP2004144833A (ja) | 2002-10-22 | 2004-05-20 | Canon Inc | 加熱装置 |
JP2005188712A (ja) * | 2003-12-26 | 2005-07-14 | Honda Motor Co Ltd | 無段変速機用金属ベルト、金属リングの製造方法および金属リングの形状測定方法 |
JP2009227333A (ja) | 2008-03-21 | 2009-10-08 | Chian Hua Liao | 多孔からの排気が可能な収納袋 |
JP2009237185A (ja) * | 2008-03-27 | 2009-10-15 | Seiko Epson Corp | 定着装置および画像形成装置 |
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JP4701316B2 (ja) | 2011-06-15 |
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JP2011095735A (ja) | 2011-05-12 |
EP2453313A1 (en) | 2012-05-16 |
EP2453313A4 (en) | 2017-05-10 |
CN102576206B (zh) | 2015-01-07 |
KR101427492B1 (ko) | 2014-08-07 |
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