JPS6243183B2 - - Google Patents
Info
- Publication number
- JPS6243183B2 JPS6243183B2 JP59158108A JP15810884A JPS6243183B2 JP S6243183 B2 JPS6243183 B2 JP S6243183B2 JP 59158108 A JP59158108 A JP 59158108A JP 15810884 A JP15810884 A JP 15810884A JP S6243183 B2 JPS6243183 B2 JP S6243183B2
- Authority
- JP
- Japan
- Prior art keywords
- toner
- roller
- fixing
- fixing roller
- support
- 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.)
- Expired
Links
- 238000003825 pressing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 21
- 239000000463 material Substances 0.000 description 17
- 238000004140 cleaning Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 14
- 230000001070 adhesive effect Effects 0.000 description 13
- 229920002379 silicone rubber Polymers 0.000 description 13
- 239000004945 silicone rubber Substances 0.000 description 13
- 239000000853 adhesive Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 4
- 239000013013 elastic material Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003779 heat-resistant material Substances 0.000 description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical compound CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 description 1
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- 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
Description
【発明の詳細な説明】
本発明は薄い支持体上に付着保持されたトナー
像を支持体上に定着するために用いられるトナー
像定着装置に関するものであり、具体的にはトナ
ー像を直接加熱体に接触させて定着を行う密着加
熱定着装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a toner image fixing device used for fixing a toner image adhered and held on a thin support onto the support. The present invention relates to a contact heating fixing device that performs fixing by contacting the body.
一般に電子写真複写装置において、まず帯電、
露光を経て感光板上に形成された静電潜像は、次
いでカスケード法又は磁気ブラシ法等の現像法に
より、静電潜像に帯電された樹脂粉末（トナー）
を接触させ、静電潜像とトナーの静電引力あるい
は反撥力により静電潜像に対応したトナー像が薄
い支持体上に形成される。 In general, in an electrophotographic copying device, the first step is to charge the
The electrostatic latent image formed on the photosensitive plate through exposure is then processed into a charged resin powder (toner) using a developing method such as a cascade method or a magnetic brush method.
A toner image corresponding to the electrostatic latent image is formed on the thin support by the electrostatic attraction or repulsion between the electrostatic latent image and the toner.
上述したように形成されたトナー像は、一般に
支持体面に対する接着力が弱く、入為的又は機械
的な作用で容易に像崩れ等が起るため通常の定着
工程により、トナー像の定着を行つている。トナ
ー像の定着方法として、トナー材に熱可塑性樹脂
が使用される場合、一般には加熱部材を用いてト
ナーを支持体上に融着させる加熱融着方法が用い
られている。この中で最も熱効率が高く且つ火災
の危険性がない方法として、トナーが融着するに
十分な温度に加熱された加熱体にトナー像を直接
接触させ、同時に別部材で圧力を加えて定着を行
う密着式加熱法が用いられていることは周知の通
りである。現在このような密着加熱法は内部に加
熱用ヒーターを有し、外周面にトナーに対して優
れた非粘着性を有する材料を全面に被覆した加熱
用ローラーと、外周面に例えばゴム状の弾性体を
被覆した圧着ローラー間にトナー像を形成した薄
い支持体を通過させることによつて定着を行うい
わゆる加熱ローラー定着法として既に実用化され
ている。 The toner image formed as described above generally has weak adhesion to the support surface and easily collapses due to artificial or mechanical action, so it is difficult to fix the toner image using a normal fixing process. It's on. As a method for fixing a toner image, when a thermoplastic resin is used as a toner material, a heat fusing method is generally used in which a heating member is used to fuse the toner onto a support. Among these methods, the method with the highest thermal efficiency and without the risk of fire is to bring the toner image into direct contact with a heating element heated to a temperature sufficient to fuse the toner, and at the same time apply pressure with a separate member to fuse the toner image. It is well known that the contact heating method is used. Currently, this type of contact heating method has an internal heating heater, a heating roller whose outer peripheral surface is entirely covered with a material that has excellent non-adhesive properties against toner, and a heating roller whose outer peripheral surface is coated with a material that has an elastic material such as rubber. This method has already been put to practical use as a so-called heated roller fixing method in which fixing is carried out by passing a thin support on which a toner image is formed between pressure rollers covering a body.
このような加熱ローラー定着装置において、薄
い支持体上のトナー像と直接接触する側の定着ロ
ーラーとして、その表面に例えば４弗化エチレン
樹脂、４弗化エチレンと６弗化プロピレンとの共
重合体、又は室温加硫型シリコーンゴムの如き材
料よりなる優れた非粘着性材を被覆することによ
つて定着時に薄い支持体上のトナーが定着ローラ
ーに転写され、画像を乱す現像、いわゆるオフセ
ツト現象を防ぐことができる。一方トナー支持体
を定着ローラーに圧接するための圧着ローラーは
本来直接トナー像に接触することがないため定着
ローラーの如くトナーに対し非粘着性を有する材
料を用いなくても、一般に耐熱材料、例えば熱加
硫型のシリコーンゴム又は金属材料等によつて構
成することも可能である。 In such a heating roller fixing device, the surface of the fixing roller that comes into direct contact with the toner image on the thin support is coated with a tetrafluoroethylene resin, a copolymer of tetrafluoroethylene and hexafluoropropylene, etc. Or by coating with a superior non-adhesive material such as room temperature vulcanizable silicone rubber, the toner on the thin support is transferred to the fixing roller during fixing and the so-called offset phenomenon, which disturbs the image, can be avoided. It can be prevented. On the other hand, since the pressure roller for pressing the toner support against the fixing roller does not originally come into direct contact with the toner image, it does not need to be made of a material that is non-adhesive to the toner like the fixing roller, but is generally made of heat-resistant material, such as It is also possible to construct it from heat-curable silicone rubber, metal material, or the like.
しかしながら連続複写を行う一般の乾式電子複
写装置において、上記の如き材料で構成された一
対の回転ローラーを用いて定着する定着装置を使
用した場合、定着ローラー表面の局部に物理的あ
るいは化学的欠陥によつてトナー支持体から定着
時に極少量のトナーが定着ローラーに付着し、支
持体が通過した後に圧着ローラーに転位され、複
写量に比例してトナーの転移量が増加する。又別
の原因としてトナー支持体の裏面に付着してくる
少量のトナーが圧着ローラーに付着し、累積する
ことも挙げる事ができる。そして圧着ローラーに
トナー支持体が巻き込まれる等不良動作の原因と
なる。 However, when using a fixing device that uses a pair of rotating rollers made of the above-mentioned materials in a general dry type electronic copying machine that performs continuous copying, physical or chemical defects may occur locally on the surface of the fixing roller. Therefore, a very small amount of toner adheres to the fixing roller from the toner support during fixing, and after the support passes, it is transferred to the pressure roller, and the amount of toner transferred increases in proportion to the amount of copying. Another cause is that a small amount of toner that adheres to the back surface of the toner support adheres to the pressure roller and accumulates. This may cause malfunctions such as the toner support getting caught up in the pressure roller.
このように従来は比較的短時間の使用で圧着ロ
ーラーを清掃しなければならない欠点がある。又
圧着ローラーを自動的に清掃する方法として米国
特許3706491号が知られているが、この方法を用
いた場合、機構が極めて煩雑になり、更に清掃時
には複写機全体の機構を停止しなければならない
大きな欠点がある。 As described above, the conventional method has the disadvantage that the pressure roller must be cleaned after a relatively short period of use. Also, US Pat. No. 3,706,491 is known as a method for automatically cleaning the pressure roller, but when this method is used, the mechanism becomes extremely complicated, and furthermore, the entire mechanism of the copying machine must be stopped during cleaning. There is a big drawback.
本発明は上記の如き欠点を一掃すべく特に提案
されたものである。即ち、トナーに対し非粘着性
を有する材料、例えば４弗化エチレン樹脂又は４
弗化エチレンと６弗化プロピレンとの共重合体か
らなる薄い被膜を有する加熱定着ローラーと、該
加熱定着ローラーに接触して常にその表面をクリ
ーニングする装置を有し、トナー支持体を前記加
熱定着ローラーに圧接するための圧着ローラー表
面にはトナーに対し非粘着性を有する弾性体、例
えば室温加硫型シリコーンゴムで被覆する。上記
の如き定着ローラー及び圧着ローラーを用いて支
持体上のトナー像を定着する場合、定着ローラー
表面に被覆された薄い非粘着性材料の物理的又は
化学的欠陥等により定着ローラーに付着した少量
のトナーは該定着ローラーに装備されたクリーニ
ング装置により順次除去され、従来の如く圧着ロ
ーラーにトナーが転移して累積するのを防止でき
ると共に一方のトナー支持体の裏面より運ばれる
トナーは圧着ローラー表面に形成された非粘着性
面により圧着ローラー表面に付着することなく支
持体と共に外部に排出される。従つて加熱定着ロ
ーラー及び圧着ローラー共に常に清浄な状態に保
持することが出来るため長期間に亘り清掃作業を
行なうことなく正常な定着装置として使用するこ
とが可能であり耐久性も優れた装置を提供するこ
とができる。 The present invention has been specifically proposed to eliminate the above-mentioned drawbacks. That is, a material that is non-adhesive to the toner, such as tetrafluoroethylene resin or
A heat fixing roller having a thin film made of a copolymer of ethylene fluoride and propylene hexafluoride is provided, and a device that constantly cleans the surface of the heat fixing roller by contacting the roller, and the toner support is heated and fixed. The surface of the pressure roller that is brought into pressure contact with the roller is coated with an elastic material that is non-adhesive to the toner, such as room temperature vulcanizable silicone rubber. When fixing a toner image on a support using a fixing roller and a pressure roller such as those described above, a small amount of particles may adhere to the fixing roller due to physical or chemical defects in the thin non-adhesive material coated on the surface of the fixing roller. The toner is sequentially removed by a cleaning device equipped on the fixing roller, which prevents the toner from transferring and accumulating on the pressure roller as in the conventional method, and the toner carried from the back side of one of the toner supports is removed onto the surface of the pressure roller. Due to the formed non-adhesive surface, it is discharged to the outside together with the support without adhering to the surface of the pressure roller. Therefore, since both the heat fixing roller and the pressure roller can be kept in a clean state at all times, the device can be used as a normal fixing device for a long period of time without having to be cleaned, providing a device with excellent durability. can do.
次に実施例として示された図面につき説明すれ
ば、１はその表面をトナーに対して非粘着性を有
する材料、例えば４弗化エチレン樹脂等で全周面
が被覆された加熱定着ローラーで、その内側部に
加熱ヒーター２を内蔵している。該加熱ヒーター
２は例えば赤外線ランプ又はニクロム線の如き加
熱装置を用い、加熱定着ローラー１の表面を、指
定された温度範囲を保持するように自動制御され
ている。３は圧着ローラーで金属ローラー４の外
周に耐熱性弾性体で且トナーに対し非粘着性を有
する材料よりなるゴム状弾性体５を全周に接着被
覆する。そして前記加熱定着ローラー１に圧接し
ている。又前記加熱定着ローラー１と圧着ローラ
ー３は同一周速度をもつて第１図矢印方向に回転
するよう適宜の駆動機構が設けられている。一般
に加熱定着ローラーの表面温度はトナー支持体の
送り速度により多少異なるが平均温度として150
゜〜200゜に維持されているため、圧着ローラー
に使用されるゴム状弾性体５は前記の温度に耐え
る材料が使用され、且つ使用されるトナー材料に
対して優れた離型性を有することが必要である。
上記の温度に耐える材料として室温加硫型シリコ
ーンゴム又は低温加硫型シリコーンゴムが耐熱材
として充分であることが判明した。このようなゴ
ム材料中で特に型取り母型用として開発されたも
ので信越化学株式会社製KE1300RTV、
KE1400RTV、KE111RTV又はKE1206RTV等が
あげられ一般樹脂に対する離型性が極めてよい。
６は表面にトナー粉体像７を形成すべき薄い支持
体で案内板８にて加熱定着ローラー１と圧着ロー
ラー３間に送り込むように構成する。９は実願昭
48−20531号（実公昭53−33568号）の出願に係る
トナー支持体分離装置でありゴム状弾性体から成
る歯型状回転体が加熱定着ローラー１の表面に接
近し、反時計方向に常時回転させ、定着後トナー
支持体６が加熱定着ローラー１に巻付くのを防止
する。１０，１１はトナー支持体６の排出案内板
で、その排出位置に排出ローラー１２，１３を設
けて機外にトナー支持体６を排出する。１４は加
熱定着ローラー１のクリーニング装置で、加熱定
着ローラー１の表面に、該クリーニング装置のク
リーニングウエブ１５が常時接触するように設け
られ、該クリーニングウエブの材質としては、イ
ソフタル酸とメタフエニレンジアミンをポリ縮合
させてなる芳香族ポリアミド化合物であるノーメ
ツクスＥ−54A（デユポン社商標）又はガラス繊
維織布が用いられる。該クリーニングウエブの両
端は、供給ローラーの供給軸１６と回収ローラー
の巻取軸１７に巻装され、図示の如く張設せしめ
られる。そしてクリーニングウエブ１５は複写動
作毎に少量づつ移動して常に新しいクリーニング
ウエブ１５が加熱定着ローラー１に接するように
構成する。１８はクリーニングウエブ１５を確実
に加熱定着ローラー１面に接するように耐熱性フ
エルトからなる押圧片である。 Next, referring to the drawings shown as examples, 1 is a heat fixing roller whose entire circumferential surface is coated with a material that is non-adhesive to toner, such as tetrafluoroethylene resin; A heating heater 2 is built in the inner part. The heater 2 uses a heating device such as an infrared lamp or a nichrome wire, and is automatically controlled to maintain the surface of the fixing roller 1 within a specified temperature range. Reference numeral 3 denotes a pressure roller, and the outer periphery of a metal roller 4 is coated with a rubber-like elastic body 5 made of a heat-resistant elastic body and a material that is non-adhesive to toner. And it is in pressure contact with the heating fixing roller 1. Further, an appropriate drive mechanism is provided so that the heating fixing roller 1 and the pressure roller 3 rotate in the direction of the arrow in FIG. 1 at the same circumferential speed. In general, the surface temperature of the heating fixing roller varies somewhat depending on the feeding speed of the toner support, but the average temperature is 150.
Since the temperature is maintained between 200° and 200°, the rubber-like elastic body 5 used in the pressure roller must be made of a material that can withstand the above-mentioned temperature and has excellent mold releasability for the toner material used. is necessary.
It has been found that room-temperature vulcanizable silicone rubber or low-temperature vulcanizable silicone rubber is sufficient as a heat-resistant material that can withstand the above-mentioned temperatures. Among these rubber materials, KE1300RTV manufactured by Shin-Etsu Chemical Co., Ltd. was developed especially for use in mold making molds.
Examples include KE1400RTV, KE111RTV, and KE1206RTV, which have extremely good mold releasability from general resins.
Reference numeral 6 denotes a thin support on which a toner powder image 7 is to be formed, and is configured to be fed between the heat fixing roller 1 and the pressure roller 3 by a guide plate 8. 9 is Jitsuganaki
48-20531 (Utility Model Publication No. 53-33568), in which a tooth-shaped rotating body made of a rubber-like elastic body approaches the surface of the heat fixing roller 1 and is constantly rotated counterclockwise. The toner support 6 is rotated to prevent the toner support 6 from wrapping around the heat fixing roller 1 after fixing. Reference numerals 10 and 11 denote discharge guide plates for the toner support 6, and discharge rollers 12 and 13 are provided at the discharge position to discharge the toner support 6 to the outside of the machine. Reference numeral 14 denotes a cleaning device for the heat fixing roller 1, which is provided so that a cleaning web 15 of the cleaning device is always in contact with the surface of the heat fixing roller 1, and the cleaning web is made of isophthalic acid and metaphenylenediamine. Nomex E-54A (trademark of DuPont), which is an aromatic polyamide compound formed by polycondensation of polycondensed polyamide, or glass fiber woven fabric is used. Both ends of the cleaning web are wound around the supply shaft 16 of the supply roller and the take-up shaft 17 of the recovery roller, and are stretched as shown. The cleaning web 15 is moved by a small amount for each copying operation so that a new cleaning web 15 always comes into contact with the heat fixing roller 1. Reference numeral 18 denotes a pressing piece made of heat-resistant felt to ensure that the cleaning web 15 comes into contact with one surface of the heat-fixing roller.
本実施例は以上の如く構成されたから、まず加
熱ヒーター２に通電して加熱定着ローラー１の表
面温度がトナーを充分溶融するに適した温度まで
上昇した時、複写機構によりトナー粉体像７を形
成したトナー支持体６を案内板に介して加熱定着
ローラー１と圧着ローラー３間に挿入すると、ト
ナー粉体像７は順次加熱定着ローラー１の表面で
溶融してトナー支持体８上に定着される。次に排
出案内板１０，１１を介して排出ローラー１２，
１３にて外部に排出される。以上の定着に際して
加熱定着ローラー１の表面に微量の溶融トナーが
付着するが、クリーニング装置１４のクリーニン
グウエブ１５により順次清掃除去され、新たにト
ナー支持体６と接する加熱定着ローラー面は常に
清浄に保持され、いわゆるオフセツト現象が防止
されると共に加熱定着ローラー１より圧着ローラ
ー３の表面にトナーが転移されることを防ぐこと
ができる。又トナー支持体６の裏面に付着してく
る微量のトナーは加熱定着時に圧着ローラー３の
表面に接触するが、圧着ローラー３の表面は室温
加硫型シリコーンゴム等のトナーに対し非粘着性
の材料で構成されているためトナー支持体の裏面
に付着された状態で機外に排出され圧着ローラー
３の表面に累積することがない。又トナー支持体
６が加熱定着ローラー１に付着し、そのまま搬送
されるのを防止するため支持体分離装置９を反時
計方向に回転し、トナー支持体６を案内板方向に
誘導する。 Since the present embodiment is constructed as described above, first, when the heating heater 2 is energized and the surface temperature of the heating fixing roller 1 rises to a temperature suitable for sufficiently melting the toner, the toner powder image 7 is transferred by the copying mechanism. When the formed toner support 6 is inserted between the heat fixing roller 1 and the pressure roller 3 via a guide plate, the toner powder image 7 is sequentially melted on the surface of the heat fixation roller 1 and fixed onto the toner support 8. Ru. Next, the discharge roller 12,
It is discharged to the outside at 13. During the above fixing, a small amount of molten toner adheres to the surface of the heat fixing roller 1, but it is successively cleaned and removed by the cleaning web 15 of the cleaning device 14, and the surface of the heat fixing roller that newly contacts the toner support 6 is always kept clean. This prevents the so-called offset phenomenon and also prevents the toner from being transferred from the heat fixing roller 1 to the surface of the pressure roller 3. Also, a small amount of toner adhering to the back surface of the toner support 6 comes into contact with the surface of the pressure roller 3 during heat fixing, but the surface of the pressure roller 3 is made of a non-adhesive material such as room temperature vulcanizable silicone rubber. Since it is made of a material, it is discharged from the machine while being adhered to the back surface of the toner support and does not accumulate on the surface of the pressure roller 3. Further, in order to prevent the toner support 6 from adhering to the heat fixing roller 1 and being conveyed as it is, the support separation device 9 is rotated counterclockwise to guide the toner support 6 toward the guide plate.
第２図は圧着ローラー３の他の実施例である。
一般に室温加硫型シリコーンゴムは通常の熱加硫
型シリコーンゴムに比較して機械的強度が劣るた
め150度より200度の高温に保たれた加熱定着ロー
ラーに接しながら長時間運転する場合特に弾力性
が劣化し、圧着力が減少する欠点があるが、この
ような欠点を改良するため金属ローラー２１上に
熱加硫型シリコーンゴム層１９を設け、その表面
に更に室温加硫型シリコーンゴム層２０を設けた
ものである。以上のような二種構造をとることに
より弾性材の機械的強度が改善され且つ金属ロー
ラー２１と熱加硫型シリコーンゴム層との接着強
度が改善されるため長期間の使用に耐える圧着ロ
ーラーを提供することができる。 FIG. 2 shows another embodiment of the pressure roller 3.
In general, room temperature vulcanizable silicone rubber has inferior mechanical strength compared to normal heat vulcanizable silicone rubber, so it is especially elastic when operated for long periods of time while in contact with a heated fixing roller kept at a high temperature of 150 to 200 degrees Celsius. However, in order to improve these drawbacks, a heat-curable silicone rubber layer 19 is provided on the metal roller 21, and a room-temperature-curable silicone rubber layer is further added to the surface of the heat-curable silicone rubber layer 19. 20. By adopting the above-mentioned two-type structure, the mechanical strength of the elastic material is improved, and the adhesive strength between the metal roller 21 and the heat-vulcanized silicone rubber layer is improved, so a pressure roller that can withstand long-term use can be obtained. can be provided.
以上のように本発明はトナーに対し非粘着性を
有する材料で被覆された加熱定着ローラーと該加
熱定着ローラーに対し表面にはトナーに対し非粘
着を有する例えば室温加硫型シリコーンゴムより
なるゴム状弾性体で被覆した圧着ローラーを圧接
し、更に加熱定着ローラーには帯状のクリーニン
グ装置を接触させて定着毎に加熱定着ローラーの
表面をクリーニングし、その一部に圧接した圧着
ローラーに対するトナーの転移を防止すると共に
圧着ローラー自体の表面がトナーを分離しやすい
材料が用いられているため長期間の使用後でも定
着装置のローラーにトナーが付着せず極めて耐久
性の優れた装置を提供出来る効果がある。 As described above, the present invention provides a heat fixing roller coated with a material that is non-adhesive to toner, and a rubber surface of the heat fixing roller that is made of a room-temperature vulcanizable silicone rubber that is non-adhesive to toner. A pressure roller coated with a shaped elastic body is pressed into contact with the pressure roller, and a belt-shaped cleaning device is brought into contact with the heating fixing roller to clean the surface of the heating fixing roller every time fixing is performed, and the toner is transferred to the pressure roller which is in pressure contact with a part of the heating fixing roller. In addition, since the surface of the pressure roller itself is made of a material that easily separates toner, toner does not adhere to the roller of the fixing device even after long-term use, making it possible to provide an extremely durable device. be.
図面は本発明の一実施例を示すもので、第１図
は定着装置の全体の構成を示す縦断正面図、第２
図は圧着ローラーの他の実施例で、その一部を切
欠した側面図である。
１は加熱定着ローラー、２は加熱ヒーター、３
は圧着ローラー、４は金属ローラー、５はゴム状
弾性体、６はトナー粉体像７を形成すべき支持
体、９は支持体分離装置、１２，１３は排出ロー
ラー、１４はクリーニング装置、１５はクリーニ
ングウエブ。
The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view showing the overall structure of the fixing device, and FIG.
The figure is a partially cutaway side view of another embodiment of the pressure roller. 1 is a heating fixing roller, 2 is a heating heater, 3
1 is a pressure roller, 4 is a metal roller, 5 is a rubber-like elastic body, 6 is a support on which the toner powder image 7 is to be formed, 9 is a support separation device, 12 and 13 are discharge rollers, 14 is a cleaning device, 15 is a cleaning web.
Claims (1)
するとともに、該定着ローラーの表面の一部に該
定着ローラーの回転方向と逆方向に摺動可能なよ
うに帯状耐熱性部材を帯状耐熱性部材供給ローラ
ーと帯状耐熱性部材回収ローラー間に張設し、且
つ、該帯状耐熱性部材を押圧する部材を該定着ロ
ーラーと該帯状耐熱性部材の接点に設けたことを
特徴とするローラー定着装置。1. A support separation member is disposed near the fixing roller, and a belt-shaped heat-resistant member is attached to a part of the surface of the fixing roller so as to be slidable in a direction opposite to the rotational direction of the fixing roller. A roller fixing device comprising: a member stretched between a supply roller and a strip-shaped heat-resistant member collection roller, and a member for pressing the strip-shaped heat-resistant member is provided at a contact point between the fixing roller and the strip-shaped heat-resistant member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15810884A JPS60143374A (en) | 1984-07-28 | 1984-07-28 | Toner image fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15810884A JPS60143374A (en) | 1984-07-28 | 1984-07-28 | Toner image fixing device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11884780A Division JPS56132366A (en) | 1980-08-28 | 1980-08-28 | Toner image fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60143374A JPS60143374A (en) | 1985-07-29 |
| JPS6243183B2 true JPS6243183B2 (en) | 1987-09-11 |
Family
ID=15664474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15810884A Granted JPS60143374A (en) | 1984-07-28 | 1984-07-28 | Toner image fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60143374A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02280181A (en) * | 1989-04-20 | 1990-11-16 | Konica Corp | Cleaning device for fixing device |
| US5790931A (en) * | 1995-10-26 | 1998-08-04 | Sharp Kabushiki Kaisha | Fixing device |
| US7263323B2 (en) * | 2005-01-18 | 2007-08-28 | Kabushiki Kaisha Toshiba | Fixing apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3615397A (en) * | 1969-11-05 | 1971-10-26 | Xerox Corp | Method of cleaning electrostatic copying machines |
| US3637976A (en) * | 1969-06-14 | 1972-01-25 | Ricoh Kk | Fixing device of toner images |
| US3716221A (en) * | 1971-01-04 | 1973-02-13 | Minnesota Mining & Mfg | Fusing device |
| JPS4862434A (en) * | 1971-12-03 | 1973-08-31 | ||
| JPS4885149A (en) * | 1972-01-28 | 1973-11-12 | ||
| JPS4887845A (en) * | 1972-02-19 | 1973-11-17 | ||
| JPS5057237A (en) * | 1973-09-18 | 1975-05-19 |
-
1984
- 1984-07-28 JP JP15810884A patent/JPS60143374A/en active Granted
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3637976A (en) * | 1969-06-14 | 1972-01-25 | Ricoh Kk | Fixing device of toner images |
| US3615397A (en) * | 1969-11-05 | 1971-10-26 | Xerox Corp | Method of cleaning electrostatic copying machines |
| US3716221A (en) * | 1971-01-04 | 1973-02-13 | Minnesota Mining & Mfg | Fusing device |
| JPS4862434A (en) * | 1971-12-03 | 1973-08-31 | ||
| JPS4885149A (en) * | 1972-01-28 | 1973-11-12 | ||
| JPS4887845A (en) * | 1972-02-19 | 1973-11-17 | ||
| JPS5057237A (en) * | 1973-09-18 | 1975-05-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60143374A (en) | 1985-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1058688A (en) | Pfa teflon sleeved chow pressure roll | |
| US5767484A (en) | Image fixing heater and image fixing apparatus having same | |
| JPH01263679A (en) | Image forming device | |
| JPH04204982A (en) | Heater | |
| JPH065429B2 (en) | Instant heating type fixing roll | |
| CA1065389A (en) | Quick release mechanism for a backup roll of a roll fuser employed in a copier apparatus | |
| JPS6243183B2 (en) | ||
| JPS5977467A (en) | Intermediate transfer material | |
| US5597413A (en) | Donor brush | |
| JP3094252B2 (en) | Fixing device | |
| JPS59168471A (en) | Roller for fixing device | |
| JPS5977469A (en) | Recording device | |
| JPH0310950B2 (en) | ||
| JPS614089A (en) | Roller for fixing device | |
| JPS59101682A (en) | Electrostatic recording device | |
| JP2001013838A (en) | Cleaning roll and image forming device using the same | |
| JPH06337611A (en) | Fixing device | |
| JPS61205968A (en) | Fixing device for electrophotography | |
| JPS62267788A (en) | Fixing device for electrophotographic copying machine | |
| JP2754632B2 (en) | Intermediate image carrier and image forming apparatus having the same | |
| JP2005031402A (en) | Fixing apparatus and image forming apparatus equipped with the same | |
| JPH10293485A (en) | Fixing device | |
| JPS5848687Y2 (en) | Roller type heat fixing device | |
| JPS612177A (en) | Roller | |
| JP2003076210A (en) | Image forming apparatus |