JPS5833279A - Pressure fixing device of copying machine - Google Patents
Pressure fixing device of copying machineInfo
- Publication number
- JPS5833279A JPS5833279A JP56125958A JP12595881A JPS5833279A JP S5833279 A JPS5833279 A JP S5833279A JP 56125958 A JP56125958 A JP 56125958A JP 12595881 A JP12595881 A JP 12595881A JP S5833279 A JPS5833279 A JP S5833279A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- rollers
- contact
- cushion
- pressure
- 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
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
- G03G15/2092—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using pressure only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】 この発明は複写機の圧力定着装置に関するものである。[Detailed description of the invention] This invention relates to a pressure fixing device for a copying machine.
感光体かち得られた複写紙上のトナー画像は、そのまま
ではきわめて不安定であるからこ扛を紙面に固定する要
があり、このための定着手段として、従来から圧力定着
手段が提案さｎている０この種の圧力定着手段は、たと
えば第１図に示すよしに、対向する圧接ローラ１１，２
１の両端を夫々支持部材１０．２０によって支持しく図
には一方の支持部材のみを示しである）、各支持部材１
０．２０はその一端５０において枢着されており、他端
は開閉自在となっていて、この部分から転写ずみの複写
紙をローラ１１，２１の間を通過する方向に走行させる
ようにし、かつ、前記開閉自在端には、たとえば第１図
に例示するように、両支持部材を貫通する棒体３０にば
ね４０を係合させ、このばね力によって一方の支持部材
、従ってこ扛に支持さｎたローラを他方の支持部材、し
たがってこｎに支持さｎた他方のローラに圧接させ、こ
の押圧力によってトナー粒子を強制的に−体化しかつト
ナーを複写紙に強固に固定させるように構成しである。Since the toner image on the copy paper obtained by the photoreceptor is extremely unstable as it is, it is necessary to fix the toner image on the paper surface, and pressure fixing means has been proposed as a fixing means for this purpose. 0 This type of pressure fixing means is, for example, as shown in FIG.
Each support member 1 is supported at both ends by support members 10 and 20 (only one support member is shown in the figure).
0.20 is pivotally mounted at one end 50, and the other end is freely openable and closable, so that the transferred copy paper is run in the direction passing between the rollers 11 and 21 from this part, and As illustrated in FIG. 1, for example, a spring 40 is engaged with a rod 30 passing through both support members, and the spring force causes the openable end to be supported by one of the support members, and therefore by the lever. The second roller is brought into pressure contact with the other support member, and therefore the other roller supported by this, and the pressing force is configured to forcibly turn the toner particles into solid bodies and firmly fix the toner to the copy paper. It is.
このような圧力定着手段は、従来から周知の熱定着手段
に比して、ヒータその他の熱源を使用しないために電力
を消費することがなく、複写開始時にローラが所定温度
に達するまでの待ち時間が不要であり、かりにジャムが
発生したような場合にも複写紙が過熱発火するような危
険も皆無であるなどの利点を有するために、とくに−成
分系現像剤を使用する複写機を中心に次第に利用される
ようになってきている〇
しかしながら、反面、圧力定着手段にあっては、強固に
圧接しているローラ対間に複写紙を給送するために、複
写紙通過中は両ローラはばね力に抗して離隔し、通過直
後に急速に当接するのでこのときに衝撃音が発生する。Compared to conventionally known heat fixing means, such pressure fixing means consumes less power because it does not use a heater or other heat source, and requires less waiting time for the roller to reach a predetermined temperature at the start of copying. This method is particularly useful for copying machines that use component-based developers because it has the advantage of not requiring However, in pressure fixing means, in order to feed the copy paper between a pair of rollers that are in firm pressure contact, both rollers are They separate against the spring force, and immediately after passing, they rapidly come into contact with each other, causing an impact sound.
また同時に振動が発生し、複写機の構造によってはこの
振動が機内の他部分に影響して画質の劣化をもたらすな
どの欠点があったのである。At the same time, vibrations are generated, and depending on the structure of the copying machine, this vibration can affect other parts of the machine, resulting in deterioration of image quality.
本発明は、このような公知の圧力定着装置の欠点にかん
がみてなさ扛たものであって、圧接する１対の圧接ロー
ラ対の一方のローラ両端に、ゴム等の弾性材料からなる
クッションローラを、また他方のローラの前記クッショ
ンローラに対向する個所に夫々補助ローラを配設し、１
対の圧接ローラ間に複写紙が挾持さ扛て面圧接ローラが
離隔したときに、前記クッションローラとこ扛に対向す
る補助ローラとの間にクッション作用が働くように構成
して、複写紙通過後に、圧接ローラが急激に当接して衝
撃音を発生するのを可及的に阻止し、同時に振動の発生
、ローラその他の部材の損傷、コピー画質の劣化を排除
することを可能ならしめるような圧力定着装置を提供す
ることを目途とするものである。The present invention has been made in view of the drawbacks of such known pressure fixing devices, and includes cushion rollers made of an elastic material such as rubber at both ends of one of a pair of pressure rollers that are in pressure contact with each other. , furthermore, an auxiliary roller is disposed at a portion of the other roller opposite to the cushion roller, and 1
When the copy paper is held between the pair of pressure rollers and the surface pressure rollers are separated, a cushioning effect is exerted between the cushion roller and the auxiliary roller facing the rollers, and after the copy paper has passed, , a pressure that makes it possible to prevent the pressure rollers from suddenly coming into contact with each other and producing impact noise as much as possible, and at the same time eliminate the occurrence of vibrations, damage to the rollers and other members, and deterioration of copy image quality. The aim is to provide a fixing device.
以下添付の図面によって本発明の好適な実施例について
説明する。第２Ａ図は、第１図と同様な圧力定着装置の
、対向圧接する一対の定着ローラ１１．２１のみを示し
たものであって、各ローラ１１．２１は軸１２．２２に
よって回転自在に軸支さｎているものとする。ローラ２
１の両端外方には、適宜の弾性をそなえた、ゴムのよう
な弾性材料からなるクッションローラ２３，２４が取り
つけてあり、こ扛に対向する位置において、軸１２には
、金属、硬質プラスチック等からなる補助ローラ１３，
１４が取シ付けである。Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 2A shows only a pair of fixing rollers 11.21 in pressure contact with each other in a pressure fixing device similar to that in FIG. It is assumed that it is supported. roller 2
Cushion rollers 23 and 24 made of an elastic material such as rubber and having appropriate elasticity are attached to the outside of both ends of the shaft 12. Auxiliary roller 13 consisting of etc.
14 is the installation.
前記クッションローラ２３，２４の、自然状態における
直径は、ローラ２１のそｎよシも若干大きくなっており
、その差はおおむね被定着複写紙の厚みに近い寸法とす
るのが好適である。また対向ローラ１３，１４の径はロ
ーラ１１のそ汎と同様としである。The diameters of the cushion rollers 23 and 24 in their natural state are slightly larger than that of the roller 21, and it is preferable that the difference be approximately equal to the thickness of the copy paper to be fixed. Further, the diameters of the opposing rollers 13 and 14 are the same as that of the roller 11.
このような構成となっているから、常時、クッションロ
ーラ２３，２４は補助ローラ１３，１４に、第２Ｂ図に
示すように圧接していることになるＯ
圧接ローラ対１１．２１の間に転写ずみの複写紙を進入
させれば、両ローラは、はね３０による偏倚力Ｐに抗し
て紙厚に相当する量Ｄ（第２Ｃ図参照）だけ離隔するこ
とになり、このときクッションローラとこｎ−に対向す
る補助ローラの間隙ｄ ５−
はきわめて小さいものとなって、圧接ローラ対とクッシ
ョンローラおよび補助ローラとにおける位置関係はおお
むね第２Ｃ図に示すようになる〇ついで複写紙が通過す
ると、ばね力Ｐによって一方の圧接ロー２２１は他方の
圧接ローラ１１に対して急激に当接しようとするが、ク
ッションローラ２３，２４と補助ローラ１３，１４が′
さきに接触して緩衝作用がはたらいて、圧接ローラ間の
衝撃的な接触を緩和するので衝撃音の発生を阻止するこ
とができる。With this configuration, the cushion rollers 23 and 24 are always in pressure contact with the auxiliary rollers 13 and 14 as shown in FIG. 2B. When the fresh copy paper is advanced, both rollers resist the biasing force P caused by the spring 30 and are separated by an amount D corresponding to the thickness of the paper (see Fig. 2C), and at this time, the cushion roller and this The gap d5- between the auxiliary rollers facing n- is extremely small, and the positional relationship between the pressure roller pair, the cushion roller, and the auxiliary roller is approximately as shown in Figure 2C. Then, when the copy paper passes through , one pressure roller 221 tries to contact the other pressure roller 11 suddenly due to the spring force P, but the cushion rollers 23, 24 and the auxiliary rollers 13, 14
The first contact causes a buffering effect, which alleviates the impactful contact between the pressure rollers, thereby preventing the generation of impact noise.
以上の実施例においては、第２Ｃ図に示すようにクッシ
ョンローラ２３，２４の直径を圧接ローラ２１のそｎよ
りも大きくとり、その差をおおむね複写紙の紙厚にひと
しくし、補助ローラ１３゜１４の径を圧接ローラ１１の
それとほぼひとしくしたが、本発明がこのような構成に
限定さ扛るものでないことはもちろんであって、要する
に、複写紙によって圧接ローラ１１，１２が紙厚に相当
する量りだけ離隔したときに、膨隆したクッションロー
ラと、対向する補助ローラとの間隙ｄが前 ６−
記りよりも小さく、圧接ローラ対が接触する前に、クッ
ションローラと補助ローラとが接触して緩衝作用が開始
さ扛るように構成すればよいことは容易に理解できると
ころであろう。In the above embodiment, as shown in FIG. 2C, the diameters of the cushion rollers 23 and 24 are made larger than that of the pressure roller 21, and the difference is made approximately equal to the thickness of the copy paper, and the auxiliary roller 13° Although the diameter of the pressure roller 14 is made almost the same as that of the pressure roller 11, it goes without saying that the present invention is not limited to this configuration. When the bulging cushion roller and the opposing auxiliary roller are separated by a distance of It is easy to understand that the structure can be configured such that the buffering effect is started when the shock absorbs.
本発明によ扛ば、クッションローラとこ扛に対向する補
助ローラとの間に作用する緩衝作用のために、圧接ロー
ラ１１，２１が複写紙通過後急激に当接することがなく
、こ扛にともなう複写機各部に与える振動等をきわめて
簡単かつ有効に阻止することができるので定着装置を含
めて複写機の寿命を延ばし、またコピー画質の劣化を可
及的に防止することができるものである。According to the present invention, due to the buffering effect acting between the cushion roller and the auxiliary roller facing the cushion roller, the pressure rollers 11 and 21 do not suddenly come into contact with each other after the copy paper passes, and the pressure rollers 11 and 21 do not come into contact with each other suddenly after the copy paper passes. Since it is possible to very easily and effectively prevent vibrations from being applied to each part of the copying machine, the life of the copying machine including the fixing device can be extended, and deterioration of copy image quality can be prevented as much as possible.
なお前記補助ローラ１３，１４は、とぐにこ扛をもうけ
ることなく、圧接ローラ１１を延長してこの部分に前記
クッションローラが当接するように構成することができ
ることはもちろんである。It goes without saying that the auxiliary rollers 13 and 14 can be constructed by extending the pressure roller 11 and having the cushion roller abut on this portion, without having to provide a special part.
第３Ａ図は、ローラ２１の軸２２に、内輪２５に規制ロ
ーラ２３全取シつけたものを着脱自在に配設してなり同
図々示のものにおいては、ねじ２６によって内輪２５を
軸２２に固定してあ否。3A shows a shaft 22 of a roller 21, in which a regulating roller 23 is attached to an inner ring 25 in a removable manner. In the example shown in FIG. Please fix it to .
このように構成することによって、クッションローラ２
３の材料の疲労、摩耗等が生じたときには交換すること
ができる。With this configuration, the cushion roller 2
When fatigue, wear, etc. occur in the material of item 3, it can be replaced.
第３Ｂ図は、クッンヨンローラのさらに他の取着手段を
示すものであって、このものにおいては、ローラ２１の
外側におねじを刻設した小径部２７を形成し、こ扛にク
ッションローラ２６を嵌装した後、ナツト２８によって
固定したものである。FIG. 3B shows still another attachment means for the cushion roller, in which a small diameter portion 27 with a thread is formed on the outside of the roller 21, and a cushion roller 26 is attached to the outer side of the roller 21. After fitting, it is fixed with a nut 28.
このように構成することによって、クッションローラ２
３部分を着脱交換し得るとともに、ナツト２８の位置を
調整することによって、これとローラ２１端面に挾持さ
扛たローラ２６を弾性的に変形させてクッションローラ
２６の径と、圧接ローラ２１のそｎとの差を、クッショ
ンローラ２３を交換することなく、ある範囲内で変えて
衝撃の発生をさらに効果的に阻止し得るものである。With this configuration, the cushion roller 2
By adjusting the position of the nut 28, the roller 26 held between the ends of the roller 21 can be elastically deformed to adjust the diameter of the cushion roller 26 and the diameter of the pressure roller 21. By changing the difference from n within a certain range without replacing the cushion roller 23, it is possible to more effectively prevent the occurrence of impact.
第１図は、圧力定着装置の構成を示す側面図、第２Ａ図
は、本発明による圧力定着装置のローラ部分を示す要部
の端面図、
第２Ｂ図は、同上側面図、
第２Ｃ図は、クッションローラと圧接ｏ−ラ対り間隙関
係を示す要部端面図、
第３Ａおよび第３Ｂ図は、他の実施態様を示す要部の側
面図である。
図中、符号１１，２１＠・・圧接ローラ、１０゜２０・
・・支持部材、１１．２２・・・軸、２３，２４・φ・
クッションローラ、１３，１４・−ｉ助ｏ−ラ、３０・
・・棒体、４０・・・ばね
代理人 弁理士 入 江 晃
９−FIG. 1 is a side view showing the configuration of the pressure fixing device, FIG. 2A is an end view of the main part showing the roller portion of the pressure fixing device according to the present invention, FIG. 2B is a side view of the same, and FIG. 2C is a side view of the pressure fixing device according to the present invention. , an end view of the main part showing the relationship between the cushion roller and the pressure contact roller; FIGS. 3A and 3B are side views of the main part showing other embodiments. In the figure, symbols 11, 21@... Pressure roller, 10°20.
・・Support member, 11.22・・Shaft, 23, 24・φ・
Cushion roller, 13, 14・-i support roller, 30・
... Rod body, 40 ... Spring agent Patent attorney Akira Irie 9-
Claims (1)
複写紙を通過させて定着をおこなうものにおいて、 前配置対の圧接ローラのうちの一方のローラの両側に、
このローラと同軸に、ゴム等の弾性材料からなるクッシ
ョンローラを配し、他方のローラの前記クッションロー
ラに対向する位置に、非作動時に前記クッションローラ
に圧接し、前記圧接ローラ間に複写紙が通過して両圧接
ローラが離隔するときには、こｎにともなって前記クッ
ションローラの半径方向外方への膨隆を許容するととも
に、クッションローラ外周面との間隙が圧接ローラ対の
前記離隔間隙よりも小さくなるように円筒状の補助対向
面を形成してなる複写機の圧力定着装置。[Scope of Claims] In an apparatus in which a pair of O pressure rollers are brought into pressure contact and a copy sheet is passed between the two pressure rollers to perform fusing, on both sides of one of the pair of pressure rollers disposed in the front. ,
A cushion roller made of an elastic material such as rubber is arranged coaxially with this roller, and the other roller is in pressure contact with the cushion roller when not in operation at a position opposite to the cushion roller, and the copy paper is placed between the pressure rollers. When the pressure rollers are separated by passing through the roller, the cushion roller is allowed to bulge outward in the radial direction, and the gap between the cushion roller and the outer peripheral surface is smaller than the separation gap between the pressure roller pair. A pressure fixing device for a copying machine formed with a cylindrical auxiliary opposing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56125958A JPS5833279A (en) | 1981-08-13 | 1981-08-13 | Pressure fixing device of copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56125958A JPS5833279A (en) | 1981-08-13 | 1981-08-13 | Pressure fixing device of copying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5833279A true JPS5833279A (en) | 1983-02-26 |
| JPH0141989B2 JPH0141989B2 (en) | 1989-09-08 |
Family
ID=14923176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56125958A Granted JPS5833279A (en) | 1981-08-13 | 1981-08-13 | Pressure fixing device of copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5833279A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100215418A1 (en) * | 2009-02-25 | 2010-08-26 | Fuji Xerox Co., Ltd. | Recording medium transport device and image forming apparatus |
| US20110142514A1 (en) * | 2009-12-10 | 2011-06-16 | Fuji Xerox Co., Ltd. | Medium clamping device and image forming device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50132043U (en) * | 1974-04-10 | 1975-10-30 | ||
| JPS53135935A (en) * | 1977-04-27 | 1978-11-28 | Olin Corp | Process for preparing alkoxysilane cluster compound |
| JPS54153239U (en) * | 1978-04-14 | 1979-10-24 |
-
1981
- 1981-08-13 JP JP56125958A patent/JPS5833279A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50132043U (en) * | 1974-04-10 | 1975-10-30 | ||
| JPS53135935A (en) * | 1977-04-27 | 1978-11-28 | Olin Corp | Process for preparing alkoxysilane cluster compound |
| JPS54153239U (en) * | 1978-04-14 | 1979-10-24 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100215418A1 (en) * | 2009-02-25 | 2010-08-26 | Fuji Xerox Co., Ltd. | Recording medium transport device and image forming apparatus |
| US20110142514A1 (en) * | 2009-12-10 | 2011-06-16 | Fuji Xerox Co., Ltd. | Medium clamping device and image forming device |
| US8428504B2 (en) * | 2009-12-10 | 2013-04-23 | Fuji Xerox Co., Ltd. | Medium clamping device and image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0141989B2 (en) | 1989-09-08 |
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