JPH04119382A - Fixing device - Google Patents
Fixing deviceInfo
- Publication number
- JPH04119382A JPH04119382A JP2240490A JP24049090A JPH04119382A JP H04119382 A JPH04119382 A JP H04119382A JP 2240490 A JP2240490 A JP 2240490A JP 24049090 A JP24049090 A JP 24049090A JP H04119382 A JPH04119382 A JP H04119382A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- roller
- fixing device
- low
- insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010410 layer Substances 0.000 claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000002344 surface layer Substances 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims description 7
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 239000004945 silicone rubber Substances 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920001973 fluoroelastomer Polymers 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229920001774 Perfluoroether Polymers 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Surface Heating Bodies (AREA)
- Control Of Resistance Heating (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は複写機、プリンター等の画像形成装置に用いら
れ未定着画像を定着する定着装置に関し、特に、一対の
ローラで未定着画像を支持する支持材を挟持搬送して定
着するローラ定着装置に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a fixing device that is used in image forming apparatuses such as copying machines and printers and fixes unfixed images, and particularly relates to a fixing device that fixes unfixed images using a pair of rollers. The present invention relates to a roller fixing device that clamps and conveys a supporting material to fix it.
従来、定着装置については、種々の形態が考案され実施
されているが、現状では熱効率の観点から少なくとも一
方に熱源を有するローラ対からなる、所謂熱ローラ定着
装置が主流を成している。Conventionally, various types of fixing devices have been devised and implemented, but from the viewpoint of thermal efficiency, so-called heat roller fixing devices, which are composed of a pair of rollers each having a heat source on at least one of them, are currently mainstream.
第２図に従来の熱ローラ定着装置の一例を示す。FIG. 2 shows an example of a conventional heat roller fixing device.
ｌは支持材上の未定着トナー像と接する定着ローラで内
部に熱源であるハロケンヒータ３を有する。1 is a fixing roller that comes into contact with the unfixed toner image on the support material, and has a Haloken heater 3 as a heat source inside.
２は弾性層を有する加圧ローラて定着ローラ１と適切な
ニップ幅で圧接する。A pressure roller 2 having an elastic layer is brought into pressure contact with the fixing roller 1 with an appropriate nip width.
定着ローラ１はサーミスタ４によりその表面温度が検知
され、適当な表面温度に維持される。上記一対のローラ
間を転写材が通過する事により転写材上の熱溶融性トナ
ーが、加熱・加圧され定着される仕組である。この様に
トナーと加熱源を有する定着ローラとが直接接触するた
め他の方式に比べ熱伝導効率が極めて優れる。The surface temperature of the fixing roller 1 is detected by a thermistor 4 and maintained at an appropriate surface temperature. As the transfer material passes between the pair of rollers, the heat-fusible toner on the transfer material is heated and pressurized and fixed. Since the toner and the fixing roller having a heat source are in direct contact in this way, the heat conduction efficiency is extremely superior compared to other methods.
しかし、トナーが定着ローラに転移するオフセット現象
が発生するという問題がある。However, there is a problem in that an offset phenomenon occurs in which the toner is transferred to the fixing roller.
このオフセットは温度的要因と静電的要因がある。This offset has temperature and electrostatic factors.
温度的要因は定着ローラ表面温度を厳密に管理すること
て防止することができるが、静電的要因を解決するのは
難しい。Temperature factors can be prevented by strictly controlling the surface temperature of the fixing roller, but electrostatic factors are difficult to solve.
定着ローラが転写材、加圧ローラとの摩擦帯電により数
ｋＶに帯電するため転写材上の荷電トナーが静電的に定
着ローラに引き寄せられるという観点から定着ローラ及
び加圧ローラの表面電位を下げる事が有効とされる。そ
のためにローラに対して除電ブラシを用いたり、低抵抗
離型剤を塗布したり、あるいはローラの表面を低抵抗化
し、かつ芯金を介してその表層を接地する等の手段が講
じられている。Since the fixing roller is charged to several kilovolts due to frictional charging with the transfer material and pressure roller, the charged toner on the transfer material is electrostatically attracted to the fixing roller, which lowers the surface potential of the fixing roller and pressure roller. is considered valid. To this end, measures have been taken such as using a static eliminating brush on the roller, applying a low-resistance mold release agent, or lowering the resistance of the roller surface and grounding the surface layer through a core metal. .
また、加圧ローラは機能的にそれ自身やはりトナーとの
離型性に優れた表層を持っていなければならず、さらに
加圧時に自分自身が撓んで定着ローラとの間で定着に必
要な適宜なニップを形成する必要がある。このため、シ
リコンゴム上にピュアなフッ素樹脂チューブを被覆した
加圧ローラが広く用いられている。In addition, the pressure roller itself must have a surface layer that has excellent releasability from the toner in terms of functionality, and furthermore, when pressurized, it flexes itself and moves between the fixing roller and the fixing roller as necessary for fixing. It is necessary to form a nip. For this reason, pressure rollers made of silicone rubber coated with a pure fluororesin tube are widely used.
この、未定着トナーと接しない側の回転体である加圧ロ
ーラも摩擦帯電によりチャージアップして静電的オフセ
ットが発生する場合がある。The pressure roller, which is a rotating body that does not come into contact with the unfixed toner, may also be charged up due to frictional charging, causing electrostatic offset.
このため除電ブラシを加圧ローラに接触もしくは非接触
に配置し加圧ローラ表面を除電することも考えられる。For this reason, it is also conceivable to dispose a static elimination brush in contact with or not in contact with the pressure roller to eliminate static electricity from the surface of the pressure roller.
しかし長時間使用すると除電ブラシに紙粉、トナー等が
付着し除電能力が急激に低下してしまう。However, if used for a long time, paper dust, toner, etc. will adhere to the static elimination brush, and the static elimination ability will decrease rapidly.
上記問題点を解決する本発明は、圧接する第１、第２ロ
ーラで未定着画像を支持する支持材を挟持搬送して定着
する定着装置において、第１ローラは低抵抗物質を含有
した表面層を有し、第２ローラは芯金上の絶縁層と表面
絶縁層間に低抵抗中間層を有することを特徴とするもの
である。The present invention, which solves the above problems, provides a fixing device in which a support material supporting an unfixed image is held and conveyed between first and second rollers that are in pressure contact with each other to fix the image. The second roller is characterized by having a low resistance intermediate layer between the insulating layer on the core bar and the surface insulating layer.
以下、本発明の詳細な説明する。 The present invention will be explained in detail below.
第１図は本発明の実施例の定着装置の断面図である。FIG. 1 is a sectional view of a fixing device according to an embodiment of the present invention.
定着ローラ１は内部に熱源としてのハロゲンヒータ３を
有し、表面にはローラ温度を検知するサーミスタが当接
している。The fixing roller 1 has a halogen heater 3 as a heat source inside, and a thermistor that detects the temperature of the roller is in contact with the surface thereof.
定着ローラｌと加圧ローラ２とで形成されるニップ後近
傍には定着ローラ１に当接して支持材を分離する分離爪
６が設けられている。このニップで未定着画像を支持し
た記録材を挟持搬送することにより未定着画像が加熱定
着される。A separating claw 6 is provided near the back of the nip formed by the fixing roller 1 and the pressure roller 2 to come into contact with the fixing roller 1 and separate the supporting material. By nipping and conveying the recording material supporting the unfixed image in this nip, the unfixed image is heated and fixed.
本実施例の定着ローラ１は芯金１ｃとして導電性で熱伝
導率の良いＳｕｓ （ステンレス鋼）あるいはＡｆ（ア
ルミ）を使用し、この芯金ＩＣ上に、カーボンブラック
等の低抵抗物質（例えば、炭素繊維、グラファイトウィ
スカあるいは炭化珪素繊維、炭化珪素ウィスカや酸化チ
タン等の金属酸化物、ニッケル等）を２０％〜４０％含
有せしめた四フッ化エチレン樹脂（ＰＴＦＥ）に四フッ
化エチレンアルキルビニルエーテル共重合体樹脂（ＰＦ
Ａ）を５〜１５％混入させた離型層１ａをゴム系あるい
はレジン系の接着剤からなるブライマー層１ｂにより接
着している。The fixing roller 1 of this embodiment uses Sus (stainless steel) or Af (aluminum), which is electrically conductive and has good thermal conductivity, as the core metal 1c, and a low-resistance material such as carbon black (for example, Tetrafluoroethylene alkyl vinyl ether is added to tetrafluoroethylene resin (PTFE) containing 20% to 40% of carbon fiber, graphite whiskers, silicon carbide fiber, silicon carbide whiskers, metal oxides such as titanium oxide, nickel, etc. Copolymer resin (PF
A mold release layer 1a mixed with 5 to 15% of A) is adhered by a brimer layer 1b made of a rubber-based or resin-based adhesive.
離型層１ａは低抵抗物質の混入により体積抵抗が１Ｏ１
１〜１０′４Ωｃｍとなっている。The release layer 1a has a volume resistance of 1O1 due to the inclusion of a low resistance substance.
It is 1 to 10'4 Ωcm.
また、加圧ローラ２は芯金２ｄ上に絶縁性のゴム層２Ｃ
が設けられ、この絶縁ゴム層２ｃ上に充填材が混入され
ていない絶縁性のピュアなフッ素樹脂（例えばパーフル
オロアルコキシ、以下ＰＦＡ）からなる表面離型層２ａ
がプライマー層２ｂにより接着されている。Moreover, the pressure roller 2 has an insulating rubber layer 2C on the core metal 2d.
is provided on the insulating rubber layer 2c, and a surface release layer 2a made of an insulating pure fluororesin (e.g. perfluoroalkoxy, hereinafter referred to as PFA) without any filler mixed therein.
are adhered by the primer layer 2b.
ゴム層としてはシリコンゴムが好ましいが、フッ素ゴム
やフッ素ゴムとシリコンゴムの混合物等を用いても良い
。Silicone rubber is preferred as the rubber layer, but fluororubber or a mixture of fluororubber and silicone rubber may also be used.
プライマー層２ｂは、ゴム系あるいはレジン系接着材に
低抵抗物質（例えば、炭素繊維、グラファイトウィスカ
あるいは炭化珪素繊維、炭化珪素ウィスカや酸化チタン
等の金属酸化物、ニッケル等）を含有させ、体積抵抗率
で１０’Ω・ｃｍ以下に設定したものである。The primer layer 2b has a rubber-based or resin-based adhesive containing a low-resistance substance (for example, carbon fiber, graphite whiskers or silicon carbide fibers, silicon carbide whiskers, metal oxides such as titanium oxide, nickel, etc.) to improve the volume resistance. The resistance is set to 10'Ω·cm or less.
このように芯金上の絶縁ゴム層と表面絶縁層間のプライ
マー層を低抵抗中間層とすることで、表面の離型性を損
ねることなく、加圧ローラ表面電位は１００■以下に低
減することができた。By making the primer layer between the insulating rubber layer on the core metal and the surface insulating layer a low-resistance intermediate layer in this way, the surface potential of the pressure roller can be reduced to 100μ or less without impairing the mold release properties of the surface. was completed.
この理由は次にように考えられる。The reason for this is thought to be as follows.
定着ローラ表層が半導電性であるため加圧ローラ芯金と
共に電極の役を担い、従来の加圧ローラは第３図（ａ）
のコンデンサモデルてあられすことがてきる。Since the surface layer of the fixing roller is semiconductive, it plays the role of an electrode together with the pressure roller core metal, and the conventional pressure roller is shown in Figure 3 (a).
A hail of capacitor models is coming.
これに対し”本実施例では低抵抗中間層も電極の役を担
うため第３図（ｂ）のコンデンサモデルで示される。On the other hand, in this embodiment, the low-resistance intermediate layer also plays the role of an electrode, so it is shown as a capacitor model in FIG. 3(b).
即ち、第３図（ａ）に比べて第４図（ｂ）に示される本
実施例ではプライマー層に低抵抗物質を分散しているた
め、コンデンサの厚みが相対的に小さくなり、コンデン
サの容量Ｃは
により、大きくなる。That is, compared to FIG. 3(a), in this embodiment shown in FIG. 4(b), since a low resistance substance is dispersed in the primer layer, the thickness of the capacitor is relatively small, and the capacitance of the capacitor is C becomes larger.
このため同じ量の摩擦帯電電荷が発生しても発生する電
圧■は、
Ｖ＝ −（Ｑ：電荷量、Ｃニコンデンサ容量）により小
さくなる。即ち、モデル（ｂ）の方が表面電位は低く、
チャージアップしない。Therefore, even if the same amount of triboelectric charge is generated, the generated voltage (2) will be smaller due to V=-(Q: amount of charge, C capacitor capacitance). That is, model (b) has a lower surface potential and does not charge up.
次に本発明の第２実施例について説明する。Next, a second embodiment of the present invention will be described.
定着ローラは前述実施例と同じものを用いた。The fixing roller used was the same as in the previous example.
加圧ローラは芯金上の弾性体層２ｃに低抵抗物質を３０
〜５０％混入させ体積抵抗を１０’Ω・ｃｍ以下にした
導電性シリコンゴムを使用し、表面離型層はピュアなＰ
ＦＡチューブを用いた。The pressure roller has a low resistance material of 30% on the elastic layer 2c on the core metal.
Conductive silicone rubber mixed with ~50% volume resistivity of 10'Ω・cm or less is used, and the surface release layer is made of pure P.
An FA tube was used.
プライマー層としては芯金・弾性体層間、弾性体層・表
面離型層間共に絶縁性のものを使用した。Insulating primer layers were used both between the core metal and the elastic layer and between the elastic layer and the surface release layer.
この実施例においても加圧ローラ表面は極端にチャージ
アップせず静電オフセットも発生しなかった。In this example as well, the pressure roller surface was not extremely charged up and no electrostatic offset occurred.
次に本発明の第３実施例を説明する。Next, a third embodiment of the present invention will be described.
本実施例では定着ローラを絶縁性の断熱ブツシュを介し
て支持し、且つ、定着ローラにトナーと同極性のバイア
ス電圧を印加し、且つ、加圧ローラは絶縁性の表面離型
層と絶縁性の弾性体層間のプライマー層に低抵抗物質を
添加し、プライマー層の体積抵抗をｌＯΩ・ｃｍ以下と
している。In this embodiment, the fixing roller is supported via an insulating heat-insulating bushing, a bias voltage of the same polarity as that of the toner is applied to the fixing roller, and the pressure roller has an insulating surface release layer and an insulating A low-resistance substance is added to the primer layer between the elastic layers, and the volume resistance of the primer layer is set to 10Ω·cm or less.
定着ローラにトナーと同極性のバイアス電圧を印加する
ことは静電オフセット防止に有効であるが、本実施例で
は定着ローラと圧接する加圧ローラ表面のチャージアッ
プが小さいため静電オフセット防止効果が非常に大きい
。Applying a bias voltage with the same polarity as the toner to the fixing roller is effective in preventing electrostatic offset, but in this example, the charge-up on the surface of the pressure roller that comes into pressure contact with the fixing roller is small, so the effect of preventing electrostatic offset is small. Very large.
また、加圧ローラ表面が絶縁層であり、電荷の移動が無
いため、定着ローラに印加されているバイアスにも全く
影響を及ぼすことが無く、非常に安定した性能を維持で
きる。Furthermore, since the surface of the pressure roller is an insulating layer and there is no charge movement, the bias applied to the fixing roller is not affected at all, and very stable performance can be maintained.
次の第１表に従来例と本発明の実施例１〜３についての
オフセットテスト結果とその際のローラ対の表面電位測
定結果を示す。尚、原稿はごく普通の文字原稿、トナー
は正極性のもので、連続１００枚通紙してテストした結
果である。表中「上」とは定着ローラ「下」は加圧ロー
ラを示す。Table 1 below shows the offset test results for the conventional example and Examples 1 to 3 of the present invention, and the surface potential measurement results of the roller pair at that time. The original was a normal text original, the toner was of positive polarity, and the results were tested by continuously passing 100 sheets. In the table, "upper" means a fixing roller, and "lower" means a pressure roller.
第１表
上表から、本実施例のオフセット防止効果は、従来と比
して抜群に良く、各ローラの表面電位を見ても両ローラ
とも電位は低く、安定しており、定着ローラ表層に低抵
抗物質を含有したフッ素樹脂からなる半導電性の離型層
を用いることて、ローラ表面電位は非常に低く、静電オ
フセットを防止することができ、特に正帯電性のトナー
を用いる場合には非常に有効である。From the table above in Table 1, the offset prevention effect of this example is extremely good compared to the conventional one, and when looking at the surface potential of each roller, the potential of both rollers is low and stable. By using a semiconductive release layer made of fluororesin containing a low-resistance substance, the roller surface potential is extremely low and electrostatic offset can be prevented, especially when using positively charged toner. is very effective.
Ｃ発明の効果〕
以上説明した通り本発明によれば、加圧ローラ表面の離
型性を低下させることなく両ローラ表面のチャージアッ
プを非常に低く押えることができ、静電オフセットを防
止できる。C. Effects of the Invention] As explained above, according to the present invention, charge-up on the surfaces of both rollers can be suppressed to a very low level without reducing the releasability of the surface of the pressure roller, and electrostatic offset can be prevented.
第１図は本発明の実施例の定着装置の断面図、第２図は
従来の定着装置の断面図、
第３図（ａ）、第３図（ｂ）は夫々従来例と本発明の詳
細な説明図である。
ｌ・・・定着ローラ
２・・・加圧ローラ
３・・・ハロゲンヒータ
４・・・サーミスタ
６・・・分離爪−
第１図
第２図FIG. 1 is a sectional view of a fixing device according to an embodiment of the present invention, FIG. 2 is a sectional view of a conventional fixing device, and FIGS. 3(a) and 3(b) are details of the conventional example and the present invention, respectively. It is an explanatory diagram. l... Fixing roller 2... Pressure roller 3... Halogen heater 4... Thermistor 6... Separation claw - Figure 1 Figure 2
Claims (7)
る支持材を挟持搬送して定着する定着装置において、第
１ローラは低抵抗物質を含有した表面層を有し、第２ロ
ーラは芯金上の絶縁層と表面絶縁層間に低抵抗中間層を
有することを特徴とする定着装置。(1) In a fixing device that clamps and conveys a support material supporting an unfixed image between first and second rollers that are in pressure contact with each other and fixes the image, the first roller has a surface layer containing a low resistance substance, and the second roller A fixing device characterized by having a low resistance intermediate layer between an insulating layer on a core bar and a surface insulating layer.
有したフッ素樹脂層であることを特徴とする特許請求の
範囲第１項記載の定着装置。(2) The fixing device according to claim 1, wherein the low-resistance surface layer of the first roller is a fluororesin layer containing a low-resistance substance.
あることを特徴とする特許請求の範囲第２項記載の定着
装置。(3) The fixing device according to claim 2, wherein the fluororesin layer is made of PTFE mixed with PFA.
プライマー層であることを特徴とする特許請求の範囲第
１項乃至第３項記載の定着装置。(4) The fixing device according to any one of claims 1 to 3, wherein the low-resistance intermediate layer is a primer layer for adhering a surface insulating layer.
層はフッ素樹脂層であることを特徴とする特許請求の範
囲第１項乃至第４項記載の定着装置。(5) The fixing device according to any one of claims 1 to 4, wherein the insulating layer on the core bar is a silicone rubber layer, and the surface insulating layer is a fluororesin layer.
れていることを特徴とする特許請求の範囲第１項乃至第
５項記載の定着装置。(6) The fixing device according to any one of claims 1 to 5, wherein the low resistance surface layer of the first roller is substantially grounded.
であることを特徴とする特許請求の範囲第１項乃至第６
項記載の定着装置。(7) Claims 1 to 6, characterized in that the first roller is a roller on the side that comes into contact with the unfixed image.
Fixing device as described in section.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2240490A JP3005028B2 (en) | 1990-09-10 | 1990-09-10 | Fixing device |
| EP90311239A EP0424053B1 (en) | 1989-10-16 | 1990-10-15 | Mold releasing elastic roller |
| DE69024456T DE69024456T2 (en) | 1989-10-16 | 1990-10-15 | Non-adhesive elastic roller |
| KR1019900016469A KR0132422B1 (en) | 1989-10-16 | 1990-10-16 | Fixing device with roller |
| US08/272,613 US5561511A (en) | 1989-10-16 | 1994-07-11 | Releasing elastic roller and fixing device utlizing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2240490A JP3005028B2 (en) | 1990-09-10 | 1990-09-10 | Fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04119382A true JPH04119382A (en) | 1992-04-20 |
| JP3005028B2 JP3005028B2 (en) | 2000-01-31 |
Family
ID=17060290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2240490A Expired - Fee Related JP3005028B2 (en) | 1989-10-16 | 1990-09-10 | Fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3005028B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008014985A (en) * | 2006-07-03 | 2008-01-24 | Ricoh Co Ltd | Layered product for image forming apparatus, and fixing member and image forming apparatus using it |
| JP2020052226A (en) * | 2018-09-27 | 2020-04-02 | 株式会社沖データ | Fixing device and image forming apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003091192A (en) | 2001-09-19 | 2003-03-28 | Ricoh Co Ltd | Fixing device and image forming apparatus |
-
1990
- 1990-09-10 JP JP2240490A patent/JP3005028B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008014985A (en) * | 2006-07-03 | 2008-01-24 | Ricoh Co Ltd | Layered product for image forming apparatus, and fixing member and image forming apparatus using it |
| JP2020052226A (en) * | 2018-09-27 | 2020-04-02 | 株式会社沖データ | Fixing device and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3005028B2 (en) | 2000-01-31 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |