JPS646517Y2 - - Google Patents
Info
- Publication number
- JPS646517Y2 JPS646517Y2 JP11848681U JP11848681U JPS646517Y2 JP S646517 Y2 JPS646517 Y2 JP S646517Y2 JP 11848681 U JP11848681 U JP 11848681U JP 11848681 U JP11848681 U JP 11848681U JP S646517 Y2 JPS646517 Y2 JP S646517Y2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- heating roller
- heat
- fixing device
- resistant bushing
- 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
- 238000010438 heat treatment Methods 0.000 claims description 24
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 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
- G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
Description
【考案の詳細な説明】
本考案は、ヒータを備えた加熱用ローラと、こ
のローラを回転自在に支持するためのベアリング
と、このベアリングと前記加熱用ローラとの間に
介装された加熱用ブツシユと、前記加熱用ローラ
を回転するためにこのローラに固着されたギヤ又
はスプロケツトとを有する静電写真複写機におけ
る定着装置に関するものである。[Detailed Description of the Invention] The present invention consists of a heating roller equipped with a heater, a bearing for rotatably supporting the roller, and a heating roller interposed between the bearing and the heating roller. The present invention relates to a fixing device in an electrostatographic copying machine having a bush and a gear or sprocket fixed to the heating roller for rotating the heating roller.
まず、この種の定着装置の従来構造を第５図に
もとづいて説明すると、図中１３′は加熱用ロー
ラで、このローラ１３′は、左右一対のボス部２
２′，２３′、これら両ボス部２２′，２３′に固着
された筒状体２４′、ならびに筒状体２４′の外周
部に被覆されたテフロン（商品名）などのフツ素
系樹脂２５′からなり、その内部にはヒータ２
６′が備えられている。左右のボス部２２′，２
３′の外周部には、それぞれストツプリング２
８′，２８′によつて耐熱用のブツシユ２９′，２
９′が取付けられ、これら耐熱用ブツシユ２９′，
２９′に外嵌された左右一対のつば付きベアリン
グ３０′，３４′により、前記加熱用ローラ１３′
が、左右の側板１８′，１９′に回転自在に支持さ
れている。そして、一方のボス部２３′の外端部
には、このボス部２３′に穿設された切欠き部３
２′に係合するボルト３３′によつて、加熱用ロー
ラ１３′駆動用のギヤ２７′（スプロケツトの場合
もある。以下、ギヤの場合についてのみ説明す
る。）が固着されているのであるが、従来におい
ては、このギヤ２７′が、ギヤとして必要な機械
的強度と耐熱性の面から焼結合金で形成されてい
たため、図外のギヤと咬合して回転する際に、可
成り大きな騒音を発生するという欠点があつた。
また、耐熱性には優れているものの、熱伝導率が
大きいので、ヒータ２６′によつてせつかく熱せ
られた加熱用ローラ１３′の熱を外部に逃がして
しまうという欠点もあつた。さらには、このギヤ
２７′と耐熱用ブツシユ２９′とが完全に別体に構
成されていたので、ギヤ２７′はボルト３３′によ
つて、耐熱用ブツシユ２９′はストツプリング２
８′によつて、というように、それぞれ別々の手
段で加熱用ローラ１３′のボス部２３′に固定しな
ければならず、組立て作業が複雑になるという欠
点があつた。 First, the conventional structure of this type of fixing device will be explained based on FIG.
2', 23', a cylindrical body 24' fixed to both of these boss parts 22', 23', and a fluorine-based resin 25 such as Teflon (trade name) coated on the outer periphery of the cylindrical body 24'. ', and there is a heater 2 inside it.
6' is provided. Left and right boss parts 22', 2
At the outer periphery of 3', there is a stop spring 2.
Heat-resistant bushes 29' and 2 are connected by 8' and 28'.
9' is attached, and these heat-resistant bushes 29',
A pair of left and right flanged bearings 30' and 34' fitted externally to the heating roller 13'
is rotatably supported by left and right side plates 18' and 19'. At the outer end of one boss part 23', there is a notch 3 bored in this boss part 23'.
A gear 27' (which may also be a sprocket; only the case of a gear will be explained below) for driving the heating roller 13' is fixed by a bolt 33' that engages with the bolt 33'. In the past, this gear 27' was made of a sintered alloy in view of the mechanical strength and heat resistance necessary for a gear, so when it rotates in mesh with a gear (not shown), it makes quite a lot of noise. It had the disadvantage of causing
Further, although it has excellent heat resistance, it has a high thermal conductivity, so it has the disadvantage that the heat of the heating roller 13' heated by the heater 26' escapes to the outside. Furthermore, since the gear 27' and the heat-resistant bushing 29' were constructed as completely separate bodies, the gear 27' was connected to the bolt 33', and the heat-resistant bushing 29' was connected to the stop ring 29'.
8', each must be fixed to the boss portion 23' of the heating roller 13' by separate means, resulting in a disadvantage that the assembly work becomes complicated.
本考案は、このような従来欠点に着目したもの
で、前記ギヤ又はスプロケツトを特殊な材料で形
成することにより、騒音の問題と熱伝導率の問題
とを一挙に解決するとともに、このギヤ又はスプ
ロケツトと耐熱用ブツシユとの一体化をも可能に
し、組立て作業も簡単に行なうことのできる新規
で有用な定着装置を提供せんとするものである。 The present invention focuses on such conventional drawbacks, and by forming the gear or sprocket with a special material, it solves both the noise problem and the thermal conductivity problem at once. It is an object of the present invention to provide a new and useful fixing device which enables the integration of the fixing device and the heat-resistant bushing, and which allows easy assembly work.
本考案の実施の態様を例示図にもとづいて説明
すると、第１図は、本考案による定着装置１を装
備した静電写真複写機の概略構造を示すもので、
外周面に感光体を有する回転ドラム２の周囲に、
帯電装置３、露光装置４、現像装置５、転写装置
６、およびクリーニング装置７が、それぞれ配設
されている。前記転写装置６の前後にわたつて
は、紙供給装置８，９、紙送りローラ１０、定着
装置１、および紙排出装置１１が列設されて、複
写用紙移送経路１２が形成されている。 An embodiment of the present invention will be explained based on illustrative drawings. FIG. 1 shows a schematic structure of an electrostatographic copying machine equipped with a fixing device 1 according to the present invention.
Around the rotating drum 2 having a photoreceptor on its outer peripheral surface,
A charging device 3, an exposure device 4, a developing device 5, a transfer device 6, and a cleaning device 7 are provided, respectively. Before and after the transfer device 6, paper supply devices 8, 9, paper feed rollers 10, fixing device 1, and paper discharge device 11 are arranged in a line to form a copy paper transport path 12.
第２〜４図は、本考案による定着装置１の詳細
を示すもので、加熱用ローラ１３の下部には、外
周部を耐熱ゴムで覆つた加圧用ローラ１４が設け
られ、この加圧用ローラ１４は、左右一対の保持
部材１５，１６によつて回転自在に保持されてい
る。これら両保持部材１５，１６は、一端に突設
された軸１７によつて側板１８，１９に揺動自在
に枢支され、他端と側板１８，１９間に張設され
たスプリング２０，２１によつて加熱用ローラ１
３側に弾性的に付勢され、もつて、前記加圧用ロ
ーラ１４が加熱用ローラ１３に当接押圧されるよ
うに構成されている。加熱用ローラ１３そのもの
は、従来のものと同様に、左右一対のステンレス
製のボス部２２，２３、これら両ボス部２２，２
３に固着されたたとえばアルミ製の筒状体２４、
ならびに筒状体２４の外周部に被覆されたテフロ
ン（商品名）などのフツ素系樹脂２５からなり、
その内部にはヒータ２６が設けられている。前記
両ボス部２２，２３のうち、ギヤ２７が取付けら
れていない方のボス部２２には、従来通り、その
外周部にストツプリング２８を介して耐熱用ブツ
シユ２９が取付けられ、かつその耐熱用ブツシユ
２９につば付きベアリング３０が外嵌されてい
て、このベアリング３０が側板１８に固定されて
いる。他方、ギヤ２７が取付けられている方のボ
ス部２３には、耐熱用ブツシユ３１とギヤ２７と
が外嵌されているのであるが、第３，４図から明
らかなように、耐熱用ブツシユ３１とギヤ２７と
が一体的に形成され、ボス部２３に穿設の切欠き
部３２に係合するボルト３３によつて、このボス
部２３に固定されるとともに、耐熱用ブツシユ３
１につば付きベアリング３４が外嵌されて、これ
が側板１９に固定されている。この耐熱用ブツシ
ユ３１とギヤ２７とは、熱伝導率が小さく、耐熱
性に富み、かつギヤとして必要な機械的強度を備
えた樹脂材料、例えばトニーメタル（商品名）や
メルデイン（商品名）などの各種の樹脂材料で形
成されており、このような樹脂材料で形成するが
故に、耐熱ブツシユ３１は耐熱ブツシユとして、
またギヤ２７はギヤとして、それぞれその機能を
十分に発揮させながら、両者を一体化することが
できるに至つたのである。尚、前記実施例ではギ
ヤ２７を用いた場合について説明したが、このギ
ヤ２７に代えてスプロケツトを用いてもよい。 2 to 4 show details of the fixing device 1 according to the present invention. A pressure roller 14 whose outer circumference is covered with heat-resistant rubber is provided below the heating roller 13. is rotatably held by a pair of left and right holding members 15 and 16. These holding members 15 and 16 are swingably supported on side plates 18 and 19 by a shaft 17 protruding from one end, and springs 20 and 21 are stretched between the other end and the side plates 18 and 19. Heating roller 1
3 side, so that the pressure roller 14 is pressed against the heating roller 13. The heating roller 13 itself, like the conventional one, has a pair of left and right stainless steel boss parts 22, 23, and both boss parts 22, 2.
For example, a cylindrical body 24 made of aluminum is fixed to 3,
and a fluorine-based resin 25 such as Teflon (trade name) coated on the outer periphery of the cylindrical body 24,
A heater 26 is provided inside. Of the two boss parts 22 and 23, the boss part 22 to which the gear 27 is not attached has a heat-resistant bushing 29 attached to its outer periphery via a stop spring 28, as in the past. A flange bearing 30 is externally fitted on 29, and this bearing 30 is fixed to the side plate 18. On the other hand, a heat-resistant bushing 31 and a gear 27 are fitted onto the boss portion 23 on which the gear 27 is attached.As is clear from FIGS. and a gear 27 are integrally formed, and are fixed to this boss part 23 by bolts 33 that engage with notches 32 formed in the boss part 23, and a heat-resistant bushing 3.
A flange bearing 34 is fitted onto the outside of the bearing 1 and fixed to the side plate 19. The heat-resistant bushing 31 and the gear 27 are made of a resin material that has low thermal conductivity, high heat resistance, and mechanical strength necessary for a gear, such as Tony Metal (product name) or Meldein (product name). The heat-resistant bushing 31 is made of various resin materials, and because it is made of such a resin material, the heat-resistant bushing 31 is
In addition, the gear 27 has been able to integrate the two while allowing each to fully perform its functions. In the above embodiment, the case where the gear 27 is used has been described, but a sprocket may be used instead of the gear 27.
以上の説明から明らかなように、本考案による
静電写真複写機における定着装置は、ベアリング
と加熱用ローラとの間に介装される耐熱用ブツシ
ユと加熱用ローラを回転するためのギヤ又はスプ
ロケツトとを、ともに熱伝導率が小さく、耐熱性
に富み、かつ必要な機械的強度を備えた樹脂材料
から形成するものであるから、ギヤ又はスプロケ
ツトを焼結合金から形成していた従来のものに比
較して、ギヤ又はスプロケツト固定時に発生する
騒音が極めて少なく、静かな運転が可能となるば
かりか、このギヤ又はスプロケツトを介して外部
へ逃げようとする熱の量を極力おさえて、加熱用
ローラを効率良く加熱できるに至つたのである。
そして、さらに、耐熱用ブツシユと加熱用ローラ
を回転するためのギヤ又はスプロケツトとを同一
の樹脂材料で形成するものであるから、両者を一
体的に形成することが可能となり、一体的に形成
することによつて、加熱用ローラへの組付けを少
なくともひとつの組付け手段で、簡単、容易に組
付けることができるに至つたのである。 As is clear from the above description, the fixing device in the electrostatographic copying machine according to the present invention includes a heat-resistant bushing interposed between the bearing and the heating roller, and a gear or sprocket for rotating the heating roller. Both gears and sprockets are made of a resin material that has low thermal conductivity, high heat resistance, and the necessary mechanical strength. In comparison, the noise generated when the gear or sprocket is fixed is extremely low, making it possible to operate quietly. This made it possible to heat efficiently.
Furthermore, since the heat-resistant bushing and the gear or sprocket for rotating the heating roller are made of the same resin material, it is possible to form both in one piece. As a result, it has become possible to simply and easily assemble the heating roller using at least one assembling means.
図面は、本考案にかかる静電写真複写機におけ
る定着装置の実施の態様を説明するためのもの
で、第１図は、静電写真複写機の全体構造の概略
を示す断面図、第２図は、定着装置の斜視図、第
３図は、加熱用ローラの断面図、第４図は、加熱
用ローラの要部を示す分解斜視図、第５図は、従
来構造の加熱用ローラを示す断面図である。
１…定着装置、１３…加熱用ローラ、２６…ヒ
ータ、２７…ギヤ、３１…耐熱用ブツシユ、３
０，３４…ベアリング。
The drawings are for explaining an embodiment of a fixing device in an electrostatographic copying machine according to the present invention, and FIG. is a perspective view of the fixing device, FIG. 3 is a sectional view of the heating roller, FIG. 4 is an exploded perspective view showing the main parts of the heating roller, and FIG. 5 is a heating roller of a conventional structure. FIG. DESCRIPTION OF SYMBOLS 1... Fixing device, 13... Heating roller, 26... Heater, 27... Gear, 31... Heat-resistant bush, 3
0,34...Bearing.
Claims (1)
回転自在に支持するためのベアリングと、このベ
アリングと前記加熱用ローラとの間に介装された
耐熱用ブツシユと、前記加熱用ローラを回転する
ためにこのローラに固着されたギヤ又はスプロケ
ツトとを有する静電写真複写機における定着装置
において、前記耐熱用ブツシユとギヤ又はスプロ
ケツトとを、熱伝導率が小さく、耐熱性に富み、
かつ必要な機械的強度を備えた樹脂材料で、一体
的に形成したことを特徴とする静電写真複写機に
おける定着装置。 A heating roller equipped with a heater, a bearing for rotatably supporting the roller, a heat-resistant bushing interposed between the bearing and the heating roller, and a heat-resistant bushing for rotating the heating roller. In the fixing device for an electrophotographic copying machine having a gear or sprocket fixed to the roller, the heat-resistant bushing and the gear or sprocket have low thermal conductivity and high heat resistance,
A fixing device for an electrostatographic copying machine, characterized in that it is integrally formed of a resin material having the necessary mechanical strength.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11848681U JPS5823356U (en) | 1981-08-08 | 1981-08-08 | Fixing device in electrostatographic copying machine |
| EP82107016A EP0071969A3 (en) | 1981-08-08 | 1982-08-03 | A fixation apparatus for an electrostatic photographic copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11848681U JPS5823356U (en) | 1981-08-08 | 1981-08-08 | Fixing device in electrostatographic copying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5823356U JPS5823356U (en) | 1983-02-14 |
| JPS646517Y2 true JPS646517Y2 (en) | 1989-02-20 |
Family
ID=14737863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11848681U Granted JPS5823356U (en) | 1981-08-08 | 1981-08-08 | Fixing device in electrostatographic copying machine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0071969A3 (en) |
| JP (1) | JPS5823356U (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH065427B2 (en) * | 1983-12-29 | 1994-01-19 | キヤノン株式会社 | Fixing device |
| JPH0693154B2 (en) * | 1987-11-06 | 1994-11-16 | 日立工機株式会社 | Fixing device in electrophotographic apparatus |
| US5286950A (en) * | 1991-03-26 | 1994-02-15 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Fixing device and heat roller therefor |
| JP4250309B2 (en) * | 2000-05-25 | 2009-04-08 | キヤノン株式会社 | Image heating device |
| KR100640056B1 (en) * | 2003-12-27 | 2006-10-31 | 삼성전자주식회사 | Driving unit and image forming apparatus having the same |
| JP4561284B2 (en) * | 2004-09-30 | 2010-10-13 | コニカミノルタビジネステクノロジーズ株式会社 | Fixing device |
| JP5008519B2 (en) * | 2007-10-17 | 2012-08-22 | 株式会社リコー | Fixing device, image forming apparatus, and frame |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3942887A (en) * | 1974-05-28 | 1976-03-09 | Xerox Corporation | Drive mechanism for a roll fuser employed in a copier apparatus |
| JPS563724Y2 (en) * | 1975-12-04 | 1981-01-27 | ||
| JPS54149635A (en) * | 1978-05-16 | 1979-11-24 | Fujitsu Ltd | Dry fixing roller for recorder |
| US4229950A (en) * | 1979-03-02 | 1980-10-28 | Eastman Kodak Company | Coupling for end gudgeon and internally heated roller |
| US4395109A (en) * | 1979-06-11 | 1983-07-26 | Tokyo Shibaura Denki Kabushiki Kaisha | Fixing device for electronic duplicator machine |
| JPS56113179A (en) * | 1980-02-14 | 1981-09-05 | Konishiroku Photo Ind Co Ltd | Heat roller fixing device |
-
1981
- 1981-08-08 JP JP11848681U patent/JPS5823356U/en active Granted
-
1982
- 1982-08-03 EP EP82107016A patent/EP0071969A3/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0071969A2 (en) | 1983-02-16 |
| EP0071969A3 (en) | 1983-04-20 |
| JPS5823356U (en) | 1983-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS646517Y2 (en) | ||
| CA1042496A (en) | Apparatus for fixing electrophotographic images | |
| JPH0345382B2 (en) | ||
| JP3567022B2 (en) | Fixing device | |
| JPS5842985Y2 (en) | Photoreceptor of electronic copying machine | |
| JPS5821779A (en) | Fixing roller | |
| JPS6333152B2 (en) | ||
| JP3412388B2 (en) | Heating roller and image forming apparatus using the heating roller | |
| JPH03164775A (en) | Heat roller fixing device | |
| JPH05188810A (en) | Fixing device | |
| JPH0116104Y2 (en) | ||
| JP2523048Y2 (en) | Fixing device | |
| JPH0524933Y2 (en) | ||
| JPS6239409Y2 (en) | ||
| JPH0722687Y2 (en) | Heat roller in fixing device | |
| JPH048796B2 (en) | ||
| JPS6026035Y2 (en) | Rotating roller unit with clutch | |
| JPH06208314A (en) | Image forming device | |
| JPH01157368U (en) | ||
| JPS62294273A (en) | Heat roll fixing device | |
| JPH08314307A (en) | Fixing device | |
| JPS6218583A (en) | Fixing device | |
| JPS6124603A (en) | Caster unit | |
| JPH0230969U (en) | ||
| JPH0687718U (en) | Bearing device |