JP2870878B2 - Roll for fuser - Google Patents
Roll for fuserInfo
- Publication number
- JP2870878B2 JP2870878B2 JP28998489A JP28998489A JP2870878B2 JP 2870878 B2 JP2870878 B2 JP 2870878B2 JP 28998489 A JP28998489 A JP 28998489A JP 28998489 A JP28998489 A JP 28998489A JP 2870878 B2 JP2870878 B2 JP 2870878B2
- Authority
- JP
- Japan
- Prior art keywords
- roll
- fixing device
- sponge layer
- sponge
- holes
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、電子写真複写機，電子プリンタなどにおけ
る未定着画像を紙等の記録材に熱定着するための定着器
用ロールの改良に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a fixing device roll for thermally fixing an unfixed image on a recording material such as paper in an electrophotographic copying machine, an electronic printer, or the like.
［従来の技術と課題］ 近年、電子写真複写機等の小型，軽量化に伴ってその
定着装置に使用される定着器用ロールの小形，軽量化が
進んでいる。例えば、従来、第４図及び第５図に示す如
く、芯金１の周面にスポンジ層２を形成し、その外周の
表面被覆層３を形成した定着器用ロールが知られてい
る。このロールは、スポンジ層２を用いるため、ロール
表面の硬度が低く、ロールの径が小さくなっても熱定着
に必要なニップ幅を十分にとることができるとともに、
軽量であるなどの利点を有する。[Related Art and Problems] In recent years, as the size and weight of an electrophotographic copying machine have been reduced, the size and weight of a fixing device roll used in the fixing device have been reduced. For example, as shown in FIGS. 4 and 5, there is conventionally known a fixing device roll in which a sponge layer 2 is formed on a peripheral surface of a cored bar 1 and a surface coating layer 3 on the outer periphery thereof is formed. Since this roll uses the sponge layer 2, the hardness of the roll surface is low and the nip width required for heat fixing can be sufficiently obtained even when the roll diameter is small,
It has advantages such as light weight.
こうした定着器用ロールは、次のようにして製作され
る。Such a fixing device roll is manufactured as follows.
まず、芯金１の外周面に接着剤を塗布して原料ゴムを
巻装した後、これに熱を加えて加硫発泡させてスポンジ
層２を形成する。あるいは、押出機を用いて予め原料ゴ
ムチューブを連続的に押出し成形し、これに熱を加えて
加硫発泡させることによりスポンジチューブを作り、こ
のスポンジチューブ内に芯金を装着してスポンジ層を形
成する。First, an adhesive is applied to the outer peripheral surface of the cored bar 1, and a raw rubber is wound thereon. Then, heat is applied to the raw rubber to vulcanize and foam to form the sponge layer 2. Alternatively, a raw rubber tube is continuously extruded and formed in advance using an extruder, and a sponge tube is made by applying heat to the foamed material to form a sponge tube, and a sponge layer is formed by mounting a core metal in the sponge tube. Form.
次に、上記スポンジ層２の外周面に液状のゴムを注型
した後、硬化させて表面被覆層３を形成してロールを作
製する。ここに、上記表面被覆層３は、予め成形したチ
ューブをはめこむことにより形成してもよい。Next, a liquid rubber is cast on the outer peripheral surface of the sponge layer 2 and then cured to form the surface coating layer 3 to produce a roll. Here, the surface coating layer 3 may be formed by fitting a preformed tube.
ところで、一般に、電子写真複写機等の定着装置で
は、熱定着を行うために150〜200℃の熱が定着器用ロー
ルに加えられている。しかし、上述した従来の定着器用
ロールでは、スポンジ層を構成する材料が熱膨張すると
ともに、気泡内部の気体が熱膨張するため、一般に定着
器用ロールに使用される高分子材料に比べて加熱による
外径変化が大きく、ニップ幅の変化も大きくなる。Generally, in a fixing device such as an electrophotographic copying machine, heat of 150 to 200 ° C. is applied to a fixing device roll in order to perform heat fixing. However, in the above-described conventional fixing device roll, the material constituting the sponge layer thermally expands, and the gas inside the bubbles expands thermally. The change in diameter is large, and the change in nip width is also large.
また、ロール表面の温度が均一でない場合、ロール外
径に部分的な膨張差が生じ、ニップ幅の不均一という問
題が生じる。例えば、記録用紙のサイズが変わることに
より、ロール全面に通紙が行なわれず、部分的な通紙が
連続的に行なわれると、通紙部だけ熱が奪われ、非通紙
部と通紙部との熱膨張の差からニップ幅が異なり、その
結果紙しわが発生する。In addition, when the temperature of the roll surface is not uniform, a partial expansion difference occurs in the outer diameter of the roll, causing a problem of non-uniform nip width. For example, if the size of the recording paper changes, the entire surface of the roll is not passed, and if partial paper is continuously passed, heat is removed only from the paper passing portion, and the non-paper passing portion and the paper passing portion are not heated. The nip width is different due to the difference in thermal expansion between the nip width and the wrinkle.
更に、スポンジ層に熱を加えると、気泡内部は膨張に
よって圧力が上昇していくため、気泡も膨らんでロール
の外径は太くなる。しかし、これと同時に気泡内の気体
は気泡膜を通してロール外部へ出ることによって圧力を
平衡にしようとする作用が働くため、一旦外径が太くな
ったロールは徐徐に細くなる。この際、気泡内部の気体
の拡散状態は気体を通しにくい表面被覆層の影響があ
り、ロール中央部ではロールの外部に逃げにくいのに対
して、ロール両端部では両端面に逃げやすくなってい
る。従って、ロール外径の変化がロール中央部と両端部
で不均一となり、定着する際に紙しわが発生する。Further, when heat is applied to the sponge layer, the pressure inside the bubbles increases due to expansion, so that the bubbles also expand and the outer diameter of the roll becomes large. However, at the same time, the gas in the bubble goes out of the roll through the bubble film to act to balance the pressure, so that the roll once having a large outer diameter gradually becomes thinner. At this time, the diffusion state of the gas inside the bubbles is affected by the surface coating layer that is difficult to pass the gas, and it is difficult to escape to the outside of the roll at the center of the roll, but easily escapes to both end surfaces at both ends of the roll. . Therefore, the change in the outer diameter of the roll becomes uneven at the center and both ends of the roll, and paper wrinkles occur at the time of fixing.
本発明は上記事情に鑑みてなされたもので、小型，軽
量で良好な定着画像が得られるとともに、未定着画像を
定着する際に紙しわの発生を防止しえる定着器用ロール
を提供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fixing device roll that can obtain a small, lightweight, good fixed image and prevent paper wrinkles when fixing an unfixed image. Aim.
［課題を解決するための手段］ 本発明は、芯金の周面にスポンジ層を介して表面被覆
層を形成してなる定着器用ロールにおいて、前記スポン
ジ層に、芯金の長手方向に平行でかつ芯金の周方向に多
数の貫通孔，あるいは螺旋状の貫通穴を設けたことを特
徴とする定着器用ロールである。[Means for Solving the Problems] The present invention relates to a fixing device roll in which a surface coating layer is formed on a peripheral surface of a metal core via a sponge layer, wherein the sponge layer is parallel to a longitudinal direction of the metal core. A fixing device roll characterized in that a number of through holes or spiral through holes are provided in the circumferential direction of the cored bar.
本発明において、スポンジ層に芯金の長手方向に平行
でかつ芯金の周方向に多数の貫通孔を設けるのは、スポ
ンジ層特に中央部の気泡内部の加熱された気体をすみや
かに前記貫通孔を通してロールの両端側から逃がし、こ
れによりスポンジ層の熱膨張の大きな原因であるスポン
ジ層の気泡内部の気体の熱膨張を抑制し、もってロール
の外径変化を従来よりも小さくすることにある。In the present invention, the sponge layer is provided with a large number of through holes parallel to the longitudinal direction of the metal core and in the circumferential direction of the metal core. To escape from the both ends of the roll, thereby suppressing the thermal expansion of the gas inside the bubbles of the sponge layer, which is a major cause of the thermal expansion of the sponge layer, and thereby reducing the change in the outer diameter of the roll as compared with the conventional case.
上記貫通孔の形状としては、ストレートなものと螺旋
状なものとに大別できる。また、その形態としては、例
えば次のようなものが考えられる。図示しないが、芯
金の長手方向に平行でかつ芯金の周方向に貫通孔を環状
に配置したもの、第１図に示すように、貫通孔を二重
に環状に配置し、しかも外側の環状の貫通孔の各々を内
側の隣接する貫通穴の間に位置させたもの、第２図に
示すように、貫通孔の断面形状を三角形状とし、かかる
形状の貫通孔を環状でしかも近接して配置したもの等。
ここに、貫通孔の断面形状は特に限定されないが、スポ
ンジ層の厚みが全周にわたってほぼ等しくなるようにす
ると、加熱後ロールの周方向の外径変化を均一にするこ
とができため好ましい。The shape of the through hole can be roughly classified into a straight shape and a spiral shape. In addition, for example, the following can be considered. Although not shown, the through-holes are arranged in a ring shape in parallel with the longitudinal direction of the cored bar and in the circumferential direction of the cored bar. As shown in FIG. Each of the annular through-holes is positioned between adjacent inner through-holes. As shown in FIG. 2, the cross-sectional shape of the through-hole is triangular. Etc.
Here, the cross-sectional shape of the through-hole is not particularly limited, but it is preferable that the thickness of the sponge layer be substantially equal over the entire circumference, because the outer diameter change in the circumferential direction of the roll after heating can be made uniform.
上記スポンジ層に貫通孔を形成する手段としては、２
通りの方法が考えられる。Means for forming a through hole in the sponge layer include:
There are different ways.
（１）ストレートな貫通孔の場合；［従来の技術と課
題］の欄で述べた押出機を用いて連続的にスポンジチュ
ーブを作る方法において、押出機のダイの構造を変化さ
せることにより空孔を有した原料ゴムチューブを押出成
形し、これに熱を加えて加硫発泡させることにより行
う。(1) In the case of a straight through-hole; in the method of continuously forming a sponge tube using the extruder described in the section of [Prior Art and Problems], the hole is formed by changing the structure of the die of the extruder. This is performed by extruding a raw rubber tube having the above, and applying heat to vulcanize and foam.
（２）螺旋状な貫通孔の場合；例えば第６図に示すよう
に押出機11のトーピード12にひねりを施したピン13を多
数設け、トーピード12を回転させながら原料ゴム14をス
クリュー15により押出成形し、加熱しながら加硫発泡さ
せる事により行う（複数個の螺旋状な貫通孔を開ける場
合）。また、例えば第７図に示すようにトーピードに１
本の螺旋状なピン16を芯17から若干離間して設け、トー
ピード12を回転させながら原料ゴム14をスクリュー15に
より押出成形し、加熱しながら加硫発泡させる事により
行う（１個の螺旋状な貫通状を開ける場合）。なお、後
者の場合、螺旋状なピンは芯17に当接していてもよい。(2) In the case of a spiral through-hole; for example, as shown in FIG. 6, a number of twisted pins 13 are provided on a torpedo 12 of an extruder 11, and a raw rubber 14 is extruded by a screw 15 while rotating the torpedo 12. This is performed by molding and vulcanizing and foaming while heating (when a plurality of spiral through holes are opened). Also, for example, as shown in FIG.
A spiral pin 16 is provided slightly apart from the core 17, and the raw rubber 14 is extruded with the screw 15 while rotating the torpedo 12, and vulcanized and foamed while heating (one spiral shape). When opening a piercing shape). In the latter case, the spiral pin may be in contact with the core 17.
上記スポンジ層の材質としては、EPDMゴムスポンジ、
シリコーンスポンジ、フッ素ゴムスポンジ、等が挙げら
れる。As the material of the above sponge layer, EPDM rubber sponge,
Silicone sponge, fluorine rubber sponge and the like can be mentioned.
本発明に係る表面被覆層の材質としては、シリコーン
ゴム、フッ素ゴム、フッ素樹脂など耐熱性を有した材料
が挙げられる。Examples of the material of the surface coating layer according to the present invention include materials having heat resistance such as silicone rubber, fluorine rubber, and fluorine resin.
［作用］ 本発明によれば、スポンジ層に芯金の長手方向に平行
でかつ芯金の周方向に多数の貫通孔を設けるか、あるい
は１つ以上の螺旋状な貫通孔を設けることにより、スポ
ンジ層特に中央部の気泡内部の加熱された気体がすみや
かに前記貫通孔を通してロールの両端側から逃げ、これ
によりスポンジ層の気泡内部の気体の熱膨張を抑制し、
もってロールの外径変化を従来よりも小さくできるとと
もに、紙しわの発生を軽減できる。[Action] According to the present invention, by providing a large number of through holes in the sponge layer in the circumferential direction of the core metal in parallel with the longitudinal direction of the core metal, or by providing one or more spiral through holes. The heated gas inside the foam in the sponge layer, particularly in the center, quickly escapes from both ends of the roll through the through-hole, thereby suppressing the thermal expansion of the gas inside the foam in the sponge layer,
Thus, the change in the outer diameter of the roll can be made smaller than before, and the occurrence of paper wrinkles can be reduced.
［実施例１］ 本発明に係る定着器用ロールについて、第１図を参照
して製作方法とともに説明する。Example 1 A fixing device roll according to the present invention will be described together with a manufacturing method with reference to FIG.
まず、 シリコーンゴム（商品名KE903U、信越化学工業（株）
製） 100重量部、 シリコーンゴム用加硫剤（商品名Ｃ−１、信越化学工業
（株）製） １重量部、 シリコーンゴム用加硫剤（商品名Ｃ−３、信越化学工業
（株）製） ３重量部、 シリコーンゴム用発泡剤（商品名KE−Ｐ−13、信越化学
工業（株）製） ２重量部、 を十分混合し、シリコーンゴムパウンド（Si混合物）を
製造する。First, silicone rubber (brand name KE903U, Shin-Etsu Chemical Co., Ltd.)
100 parts by weight, vulcanizing agent for silicone rubber (trade name C-1, manufactured by Shin-Etsu Chemical Co., Ltd.) 1 part by weight, vulcanizing agent for silicone rubber (trade name C-3, Shin-Etsu Chemical Co., Ltd.) 3 parts by weight) and 2 parts by weight of a silicone rubber foaming agent (trade name: KE-P-13, manufactured by Shin-Etsu Chemical Co., Ltd.) to produce a silicone rubber compound (Si mixture).
次に、このSi混合物を原料として、押出機により２周
の空孔を有する原料ゴムチューブを連続的に押出し成形
した。ひきつづき、250℃で20分間加熱して加硫発泡さ
せ、空孔を有するシリコーンゴムスポンジチューブを製
作した。つづいて、このスポンジチューブ内に、外周面
に接着剤を塗布した10mmφの芯金21を挿入した。Next, using the Si mixture as a raw material, a raw rubber tube having two holes was continuously extruded and formed by an extruder. Subsequently, the mixture was heated at 250 ° C. for 20 minutes for vulcanization and foaming to produce a silicone rubber sponge tube having pores. Subsequently, a core bar 21 of 10 mmφ with an adhesive applied to the outer peripheral surface was inserted into the sponge tube.
次いで、前記接着剤を硬化させた後、スポンジチュー
ブをロールの外径が23mmφになるまで研磨してスポンジ
層22を得た。ここに、スポンジ層22には、芯金21の長手
方向に平行でかつ芯金21の周方向に多数の貫通孔23a,23
bが形成されることになる。また、外側の貫通孔23bの夫
々は内側の隣合う貫通孔23a,23a間に配置されることに
なる。Next, after the adhesive was cured, the sponge tube was polished until the outer diameter of the roll became 23 mmφ to obtain a sponge layer 22. Here, the sponge layer 22 has a large number of through holes 23a, 23 parallel to the longitudinal direction of the core metal 21 and in the circumferential direction of the core metal 21.
b will be formed. Further, each of the outer through holes 23b is disposed between the inner adjacent through holes 23a, 23a.
更に、芯金21と一体となったスポンジ層22の円周面
に、注型法によりシリコーンゴム（商品名KE12RTV、信
越化学工業（株）製）を注型，硬化させた後、外径を24
mmφに研磨して表面被覆層24を形成し、定着器用ロール
を製作した。Further, silicone rubber (trade name: KE12RTV, manufactured by Shin-Etsu Chemical Co., Ltd.) is cast on the circumferential surface of the sponge layer 22 integrated with the core metal 21 by a casting method, and after curing, the outer diameter is reduced. twenty four
The surface coating layer 24 was formed by polishing to a diameter of mmφ to produce a fixing device roll.
このようにして製作される定着器用ロールは、芯金21
の外周面にスポンジ層22を介して表面被覆層24が設けら
れ、かつ前記スポンジ層22に芯金21の長手方向に平行で
かつ芯金21の周方向に多数の貫通孔23a,23bが設けられ
た構成になっている。従って、こうした構成のロールを
加熱した際、ロール両端付近の気体のみならずロール中
央部の気体も貫通孔23a,23bを通ってロールの両端側か
ら放散されるため、ロールの外径がほぼ均一に膨張する
とともに、紙しわの発生を軽減できる。The fixing device roll manufactured in this manner is made of a core metal 21.
A surface coating layer 24 is provided on the outer peripheral surface of the sponge layer 22 via a sponge layer 22, and the sponge layer 22 is provided with a large number of through holes 23a, 23b parallel to the longitudinal direction of the core metal 21 and in the circumferential direction of the core metal 21. Configuration. Therefore, when the roll having such a configuration is heated, not only the gas near the both ends of the roll but also the gas at the center of the roll are radiated from both ends of the roll through the through holes 23a and 23b, so that the outer diameter of the roll is substantially uniform. And the occurrence of paper wrinkles can be reduced.
［実施例２］ 第２図に係る定着器用ロールは、第１図に示す構造の
ものに比べて、断面形状が三角形の貫通孔31を三角形の
各頂点Ｐが交互に内側，外側を向くように近接させて配
置したことに特徴がある。Example 2 The fixing device roll according to FIG. 2 is different from that of the structure shown in FIG. 1 in that the through-holes 31 having a triangular cross-section are formed such that the vertices P of the triangle face inward and outward alternately. It is characterized in that it is arranged close to.
こうした構造の定着器用ロールによれば、スポンジ層
22の厚みが三角形状の貫通孔31を除いた部分の厚みとな
るため、すべての箇所でほぼ同じような厚みとなる。例
えば、厚みT1が厚みT2）と等しくなる。従って、スポン
ジ層22の加熱による外径変形がより均一になり、紙しわ
をより低減できる。According to the fuser roll having such a structure, the sponge layer
Since the thickness of the portion 22 is the thickness of the portion excluding the triangular through hole 31, the thickness is almost the same at all portions. For example, the thickness T 1 is equal to the thickness T 2). Therefore, the outer diameter deformation due to the heating of the sponge layer 22 becomes more uniform, and the paper wrinkles can be further reduced.
事実、実施例1,実施例２に係る定着器用ロール及び従
来の定着器用ロールについて、180℃で10分,180℃で30
分夫々加熱したときの最大外径の変化を調べたところ、
下記第１表に示す結果が得られた。但し、加熱前のロー
ルの平均外径は、20.00mmである。In fact, the fixing device rolls according to Example 1 and Example 2 and the conventional fixing device roll were heated at 180 ° C. for 10 minutes and at 180 ° C. for 30 minutes.
When examining the change in the maximum outer diameter when heating each minute,
The results shown in Table 1 below were obtained. However, the average outer diameter of the roll before heating is 20.00 mm.
表により、従来に係るロールに比べて本発明に係るロ
ールの外径変化が、大体0.2mm〜0.4mm程度小さくなって
いることが明らかである。また、上記各ロールの加熱
（180℃,10分）前，加熱後の長手方向の外径を調べたと
ころ、第８図（実施例１）、第９図（実施例２）及び第
10図（従来）に示す特性図が得られた。これらの結果に
より、従来の場合はロールの両端付近に急激なピーク
P1,P2がみられが、本発明の場合いずれもこうしたピー
クがみられず、ロールが全体にわたって略均一に膨張し
ていることが確認できる。 From the table, it is clear that the change in the outer diameter of the roll according to the present invention is smaller than the conventional roll by about 0.2 mm to 0.4 mm. Further, when the outer diameter in the longitudinal direction before and after heating (180 ° C., 10 minutes) of each roll was examined, FIG. 8 (Example 1), FIG. 9 (Example 2) and FIG.
The characteristic diagram shown in FIG. 10 (conventional) was obtained. Based on these results, the conventional case shows a sharp peak near both ends of the roll.
Although P 1 and P 2 are observed, in the case of the present invention, such peaks are not observed, and it can be confirmed that the roll is expanded substantially uniformly over the whole.
［実施例３］ 実施例３に係る定着器用ロールは、例えば第11図に示
す如く５個の螺旋状の貫通孔32を設けた構成となってい
る。こうした貫通孔32は、既述した第６図の押出機を用
いて押出成形し、加熱しながら加硫発泡させる事により
形成される。なお、螺旋状の貫通孔32は第12図に示す如
く１個でもよい。Third Embodiment A fixing device roll according to a third embodiment has a configuration in which five spiral through holes 32 are provided, for example, as shown in FIG. The through holes 32 are formed by extrusion molding using the extruder shown in FIG. 6 and vulcanizing and foaming while heating. The number of the spiral through holes 32 may be one as shown in FIG.
こうした構造の定着器用ロールにおいても、スポンジ
層22の加熱による外径変形がより均一になり、紙しわを
より低減できる。Also in the fixing device roll having such a structure, the outer diameter deformation due to the heating of the sponge layer 22 becomes more uniform, and the paper wrinkles can be further reduced.
なお、上記実施例では、スポンジ層に貫通孔を環状に
２周形成した場合（第１図図示）、及び貫通孔の断面形
状を三角形にした場合（第２図図示）について述べた
が、これに限定されない。例えば第３図に示す如く、ス
ポンジ層22の芯金21と接する箇所に連続した切欠け部33
を多数設け、この切欠け部33から気体を外部に放出でき
るようにしてもよい。但し、こうした切欠け部33は、ス
ポンジ層22が圧力により影響を受けないように配慮すべ
きである。In the above-described embodiment, the case where the through-hole is formed in the sponge layer two times in an annular shape (shown in FIG. 1) and the case where the cross-sectional shape of the through-hole is triangular (shown in FIG. 2) have been described. It is not limited to. For example, as shown in FIG. 3, a continuous notch 33 is formed at a position where the sponge layer 22 is in contact with the metal core 21.
May be provided so that the gas can be released to the outside from the notch 33. However, it is necessary to take care that the notch 33 prevents the sponge layer 22 from being affected by the pressure.
［発明の効果］ 以上詳述した如く本発明によれば、小型，軽量で良好
な定着画像が得られるとともに、未定着画像を定着する
際に紙しわの発生を防止しえる信頼性の高い定着器用ロ
ールを提供できる。[Effects of the Invention] As described above in detail, according to the present invention, a small, lightweight, good fixed image can be obtained, and highly reliable fixing that can prevent paper wrinkles when fixing an unfixed image is achieved. Dexterity roll can be provided.
第１図は実施例１に係る定着器用ロールの断面図、第２
図は実施例２に係る定着器用ロールの断面図、第３図は
本発明に係るその他の定着器用ロールの断面図、第４図
は従来の定着器用ロールの断面図、第５図は第４図の斜
視図、第６図及び第７図は夫々は本発明に係る押出機の
説明図、第８図及び第９図は本発明に係る定着器用ロー
ルの加熱前後の外径寸法を示す特性図、第10図は従来の
定着器用ロールの加熱前後の外径寸法を示す特性図、第
11図及び第12図は夫々本発明の他の実施例に係る定着器
用ロールの斜視図である。 21……芯金、22……スポンジ層、23a,23b,31,32……貫
通通孔、24……表面被覆層、33……切欠け部。FIG. 1 is a sectional view of a fixing device roll according to a first embodiment, and FIG.
FIG. 3 is a cross-sectional view of a fixing device roll according to Embodiment 2, FIG. 3 is a cross-sectional view of another fixing device roll according to the present invention, FIG. 4 is a cross-sectional view of a conventional fixing device roll, and FIG. 6 and 7 are explanatory views of the extruder according to the present invention, respectively, and FIGS. 8 and 9 are characteristics showing the outer diameter before and after heating of the fixing device roll according to the present invention. FIG. 10 is a characteristic diagram showing the outer diameter before and after heating a conventional fixing device roll.
11 and 12 are perspective views of a fixing device roll according to another embodiment of the present invention. 21 ... core metal, 22 ... sponge layer, 23a, 23b, 31, 32 ... through-hole, 24 ... surface coating layer, 33 ... cutout.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) G03G 13/20 G03G 15/20 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) G03G 13/20 G03G 15/20
Claims (1)
層を形成してなる定着器用ロールにおいて、前記スポン
ジ層に、芯金の長手方向に平行でかつ芯金の周方向に多
数の貫通孔，あるいは螺旋状の貫通穴を設けたことを特
徴とする定着器用ロール。1. A fixing device roll in which a surface coating layer is formed on a peripheral surface of a metal core with a sponge layer interposed therebetween, wherein the sponge layer has a large number of particles parallel to the longitudinal direction of the metal core and in the peripheral direction of the metal core. A fixing device roll provided with a through hole or a spiral through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28998489A JP2870878B2 (en) | 1989-01-31 | 1989-11-09 | Roll for fuser |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2101289 | 1989-01-31 | ||
| JP1-21012 | 1989-01-31 | ||
| JP28998489A JP2870878B2 (en) | 1989-01-31 | 1989-11-09 | Roll for fuser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02282283A JPH02282283A (en) | 1990-11-19 |
| JP2870878B2 true JP2870878B2 (en) | 1999-03-17 |
Family
ID=26358021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28998489A Expired - Lifetime JP2870878B2 (en) | 1989-01-31 | 1989-11-09 | Roll for fuser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2870878B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0627850A (en) * | 1992-07-07 | 1994-02-04 | Arai Pump Mfg Co Ltd | Pressurizing roller |
| JPH0635356A (en) * | 1992-07-20 | 1994-02-10 | Arai Pump Mfg Co Ltd | Press roller |
| JP4052342B2 (en) | 2006-08-07 | 2008-02-27 | 富士ゼロックス株式会社 | Roller, fixing device and image forming apparatus |
| JP5128138B2 (en) * | 2007-01-25 | 2013-01-23 | シンジーテック株式会社 | Fixing roller and manufacturing method thereof |
| JP2019164266A (en) | 2018-03-20 | 2019-09-26 | 富士ゼロックス株式会社 | Pressure member for fixing, fixing device, and image forming apparatus |
-
1989
- 1989-11-09 JP JP28998489A patent/JP2870878B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02282283A (en) | 1990-11-19 |
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