JPH0792841A - Pressurizing roller - Google Patents
Pressurizing rollerInfo
- Publication number
- JPH0792841A JPH0792841A JP26044493A JP26044493A JPH0792841A JP H0792841 A JPH0792841 A JP H0792841A JP 26044493 A JP26044493 A JP 26044493A JP 26044493 A JP26044493 A JP 26044493A JP H0792841 A JPH0792841 A JP H0792841A
- Authority
- JP
- Japan
- Prior art keywords
- sponge rubber
- pressure roller
- rubber
- conductive silicone
- pressurizing roller
- 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
- 229920001971 elastomer Polymers 0.000 claims abstract description 35
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 30
- -1 alkyl peroxycarbonate Chemical compound 0.000 claims abstract description 13
- 150000002978 peroxides Chemical class 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 9
- PKFONJLSFITUJC-UHFFFAOYSA-N bis[(2-methylpropan-2-yl)oxy] octanediperoxoate Chemical compound CC(C)(C)OOOC(=O)CCCCCCC(=O)OOOC(C)(C)C PKFONJLSFITUJC-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims 1
- MMCOUVMKNAHQOY-UHFFFAOYSA-L oxido carbonate Chemical compound [O-]OC([O-])=O MMCOUVMKNAHQOY-UHFFFAOYSA-L 0.000 claims 1
- 238000004132 cross linking Methods 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 18
- 238000004073 vulcanization Methods 0.000 description 17
- 239000004088 foaming agent Substances 0.000 description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 238000005187 foaming Methods 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000004898 kneading Methods 0.000 description 6
- 229920002379 silicone rubber Polymers 0.000 description 6
- 239000004945 silicone rubber Substances 0.000 description 6
- 239000006229 carbon black Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000003273 ketjen black Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- WRXCBRHBHGNNQA-UHFFFAOYSA-N (2,4-dichlorobenzoyl) 2,4-dichlorobenzenecarboperoxoate Chemical compound ClC1=CC(Cl)=CC=C1C(=O)OOC(=O)C1=CC=C(Cl)C=C1Cl WRXCBRHBHGNNQA-UHFFFAOYSA-N 0.000 description 1
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 1
- BIISIZOQPWZPPS-UHFFFAOYSA-N 2-tert-butylperoxypropan-2-ylbenzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1 BIISIZOQPWZPPS-UHFFFAOYSA-N 0.000 description 1
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- IOMSYMSQXIKSQG-UHFFFAOYSA-N bis[(2-methylpropan-2-yl)oxy] 2-pentylpropanediperoxoate Chemical compound CC(C)(C)OOOC(=O)C(CCCCC)C(=O)OOOC(C)(C)C IOMSYMSQXIKSQG-UHFFFAOYSA-N 0.000 description 1
- AIEALSLTGHFGRL-UHFFFAOYSA-N bis[(2-methylpropan-2-yl)oxy] 3,3-dimethylpentanediperoxoate Chemical compound CC(C)(C)OOOC(=O)CC(C)(C)CC(=O)OOOC(C)(C)C AIEALSLTGHFGRL-UHFFFAOYSA-N 0.000 description 1
- HUWQQEZFMZXAHY-UHFFFAOYSA-N bis[(2-methylpropan-2-yl)oxy] butanediperoxoate Chemical compound CC(C)(C)OOOC(=O)CCC(=O)OOOC(C)(C)C HUWQQEZFMZXAHY-UHFFFAOYSA-N 0.000 description 1
- NJIICHASEDFECS-UHFFFAOYSA-N bis[(2-methylpropan-2-yl)oxy] decanediperoxoate Chemical compound CC(C)(C)OOOC(=O)CCCCCCCCC(=O)OOOC(C)(C)C NJIICHASEDFECS-UHFFFAOYSA-N 0.000 description 1
- LGCXOKMXIJWVNG-UHFFFAOYSA-N bis[(2-methylpropan-2-yl)oxy] hexanediperoxoate Chemical compound CC(C)(C)OOOC(=O)CCCCC(=O)OOOC(C)(C)C LGCXOKMXIJWVNG-UHFFFAOYSA-N 0.000 description 1
- OPFUZWXWDYBJLL-UHFFFAOYSA-N bis[(2-methylpropan-2-yl)oxy] nonanediperoxoate Chemical compound CC(C)(C)OOOC(=O)CCCCCCCC(=O)OOOC(C)(C)C OPFUZWXWDYBJLL-UHFFFAOYSA-N 0.000 description 1
- LTXDICKAIXLHOR-UHFFFAOYSA-N bis[(2-methylpropan-2-yl)oxy] pentanediperoxoate Chemical compound CC(C)(C)OOOC(=O)CCCC(=O)OOOC(C)(C)C LTXDICKAIXLHOR-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Silicon Polymers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子複写機やレーザビ
ームプリンタ（以下ＬＢＰと略記する）の定着部におけ
る加圧ローラーに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure roller in a fixing section of an electronic copying machine or a laser beam printer (hereinafter abbreviated as LBP).
【０００２】[0002]
【従来の技術】従来、電子複写機やＬＢＰの定着部にお
ける加圧ローラーとしてトナーの離型性を良好とするた
めに、芯金入りゴムローラーの外周にフッ素樹脂スリー
ブを被覆したローラーが知られている。そして、近年、
定着ローラーを使用した電子複写機やＬＢＰなどの小型
化が進み、熱ローラーや加圧ローラーの外径が１０〜２
５mm程度となり、特に加圧ローラーにおいては小型とな
るため定着時におけるニップ幅を確保するために、金属
芯金の外周に被覆した弾性体層を低硬度化する傾向があ
り、例えば特公平４−７７３１５号公報にて開示される
ように弾性体層を多孔質弾性体（スポンジゴム）とした
ものが多用されている。2. Description of the Related Art Conventionally, as a pressure roller in a fixing portion of an electronic copying machine or an LBP, a roller in which a fluororesin sleeve is coated on the outer circumference of a rubber roller containing a core metal is known in order to improve the releasability of toner. ing. And in recent years
The downsizing of electronic copiers and LBPs that use fixing rollers has progressed, and the outer diameters of heat rollers and pressure rollers are 10 to 2
The pressure roller has a size of about 5 mm, and the pressure roller is small in size. Therefore, in order to secure a nip width at the time of fixing, the hardness of the elastic layer coated on the outer periphery of the metal cored bar tends to be low. As disclosed in Japanese Patent No. 77315, a porous elastic body (sponge rubber) is often used as the elastic body layer.
【０００３】最近においては、加圧ローラーのトナーに
対する離型性を保持するために、表層にフッ素樹脂スリ
ーブを被覆したものが提案されており、このようなロー
ラーは、一般には特公昭４７−２０７４７号公報にて開
示されているように、弾性体層を被覆した心棒を接着剤
で被覆し、その心棒をスリーブ中へ挿入し、加熱するこ
とによりゴム心棒に固定するという方法で製造されてい
る。Recently, in order to maintain the releasability of the pressure roller to the toner, it has been proposed that the surface layer is covered with a fluororesin sleeve, and such a roller is generally disclosed in Japanese Examined Patent Publication No. 47-20747. As disclosed in Japanese Unexamined Patent Publication (Kokai), a mandrel coated with an elastic layer is coated with an adhesive, the mandrel is inserted into a sleeve, and the mandrel is heated to be fixed to the rubber mandrel. .
【０００４】上記したような従来の加圧ローラーは、最
外層に設けられたフッ素樹脂によりトナーとの離型性に
は優れているものの、定着用加熱ローラーとの摩擦によ
り帯電しやすく、その結果、静電オフセットと呼ばれる
問題が発生している。この静電オフセット現象は、定着
用加圧ローラーが加熱ローラーとの摩擦により数ｋＶに
帯電し、転写材上の荷電トナーが飛び散ったり、機械内
に浮遊しているトナーを引きつけたりして転写材を汚し
てしまうことであり、この現象を防止するためには、加
圧ローラーの表面電位を下げる必要があり、特公平５−
２２９０８号公報には、加圧ローラーの弾性体層に導電
性カーボンファイバーのような低抵抗物質を含有せしめ
て加圧ローラーの弾性体層を導電性にした定着装置が開
示されている。The conventional pressure roller as described above is excellent in releasability from the toner due to the fluororesin provided in the outermost layer, but is easily charged due to friction with the heating roller for fixing. There is a problem called electrostatic offset. In this electrostatic offset phenomenon, the fixing pressure roller is charged to several kV due to friction with the heating roller, the charged toner on the transfer material scatters, or the toner floating in the machine is attracted to the transfer material. In order to prevent this phenomenon, it is necessary to lower the surface potential of the pressure roller.
Japanese Patent No. 22908 discloses a fixing device in which the elastic layer of the pressure roller is made conductive by containing a low resistance substance such as conductive carbon fiber.
【０００５】[0005]
【発明が解決しようとする課題】前記した金属芯金の外
周に被覆されるスポンジゴムとして通常シリコーンスポ
ンジゴムが用いられるが、このシリコーンスポンジゴム
は常圧熱気加硫（ＨＡＶ）法にて成形されており、その
加硫剤としてはベンゾルパーオキサイドや２，４−ジク
ロロベンゾイルパーオキサイドなどのアシル系パーオキ
サイドが使用されている。しかしながら、導電性カーボ
ンを含有するシリコーンゴムにアシル系パーオキサイド
を加硫剤として使用すると、常圧熱気加硫では十分な加
硫が得られないという不具合があった。したがって、導
電性カーボンを含有するシリコーンスポンジゴムは特開
平３−２２３３４５号公報にて開示されているような付
加型の導電性シリコーンゴムに発泡剤を添加して作成さ
れている。しかしながら、前記の付加型の組成物は混練
り後の可使時間が短いために硬度などに安定した製品が
得られないという問題点があった。Silicone sponge rubber is usually used as the sponge rubber coated on the outer circumference of the metal cored bar. This silicone sponge rubber is molded by the normal pressure hot air vulcanization (HAV) method. As the vulcanizing agent, acyl peroxides such as benzol peroxide and 2,4-dichlorobenzoyl peroxide are used. However, when an acyl peroxide is used as a vulcanizing agent in silicone rubber containing conductive carbon, there is a problem that sufficient vulcanization cannot be obtained by atmospheric pressure hot air vulcanization. Therefore, a silicone sponge rubber containing conductive carbon is produced by adding a foaming agent to an addition type conductive silicone rubber as disclosed in Japanese Patent Laid-Open No. 3-223345. However, the above-mentioned addition type composition has a problem that a product having stable hardness cannot be obtained because the pot life after kneading is short.
【０００６】上記した問題点を解決するために、特開平
５−４３８０２号公報には、導電性シリコーンゴムの加
硫剤としてジ（アルキルパーオキシカーボネイト）を用
いた導電性シリコーンスポンジゴムが開示されている。
この場合にはジ（アルキルパーオキシカーボネート）が
カーボンブラックに対して加硫障害がなく、かつ常圧熱
気加硫できるので硬度などが安定した導電性シリコーン
スポンジゴムが得られるが、前記したジ（アルキルパー
オキシカーボネート）を加硫剤として導電性シリコーン
ゴムに使用したスポンジゴムを加圧ローラーの弾性体層
に適用した場合には、実機耐久後の製品硬度の低下が著
しく、耐久性がないという不具合があり、また、ジ（ア
ルキルパーオキシカーボネート）の使用量を増すと加硫
したスポンジゴムにおいて部分的に極めて大きな気泡が
生じるという異常発泡が発生し、加圧ローラーを形成で
きないという問題点があった。In order to solve the above-mentioned problems, JP-A-5-43802 discloses a conductive silicone sponge rubber using di (alkylperoxycarbonate) as a vulcanizing agent for the conductive silicone rubber. ing.
In this case, since the di (alkyl peroxycarbonate) has no vulcanization obstacle to carbon black and can be vulcanized by hot air at atmospheric pressure, a conductive silicone sponge rubber having stable hardness can be obtained. When sponge rubber that uses conductive silicone rubber as the vulcanizing agent is applied to the elastic layer of the pressure roller, the hardness of the product after the actual machine is drastically decreased and the durability is not good. There is a problem that when the amount of di (alkylperoxycarbonate) used is increased, abnormally large bubbles are partially generated in the vulcanized sponge rubber and the pressure roller cannot be formed. there were.
【０００７】[0007]
【課題を解決するための手段】本発明者は、前記した不
具合や問題点を解決すべく鋭意検討を重ねた結果、硬度
低下の主原因が導電性シリコーンスポンジゴムの架橋密
度が低いためであり、その加硫剤としてジ（アルキルパ
ーオキシカーボネート）とジアルキルパーオキサイドと
を併用して使用することにより、硬度低下の少ない加圧
ローラーを得ることができ、前述した問題点を解消でき
ることを見出して本発明を完成するにいたった。The present inventor has conducted extensive studies to solve the above-mentioned problems and problems, and as a result, the main cause of the decrease in hardness is that the crosslink density of the conductive silicone sponge rubber is low. By using a di (alkylperoxycarbonate) and a dialkylperoxide together as the vulcanizing agent, it is possible to obtain a pressure roller with less decrease in hardness and to find out that the above-mentioned problems can be solved. The present invention has been completed.
【０００８】前記した本発明において用いられる加硫剤
ジ（アルキルパーオキシカーボネート）としては、特開
平５−４３８０２号公報等に開示される有機過酸化物が
適用でき、１，２−ビス（ｔ−ブチルパーオキシカルボ
キシ）エタン、１，３−ビス（ｔ−ブチルパーオキシカ
ルボキシ）プロパン、１，４−ビス（ｔ−ブチルパーオ
キシカルボキシ）ブタン、１，５−ビス（ｔ−ブチルパ
ーオキシカルボキシ）ペンタン、１，６−ビス（ｔ−ブ
チルパーオキシカルボキシ）ヘキサン、１，７−ビス
（ｔ−ブチルパーオキシカルボキシ）ヘブタン、１，８
−ビス（ｔ−ブチルパーオキシカルボキシ）オクタン、
２，２−ジメチル−１，３−ビス（ｔ−ブチルパーオキ
シカルボキシ）プロパンなどが例示される。As the vulcanizing agent di (alkylperoxycarbonate) used in the present invention described above, the organic peroxides disclosed in JP-A-5-43802 can be applied, and 1,2-bis (t -Butylperoxycarboxy) ethane, 1,3-bis (t-butylperoxycarboxy) propane, 1,4-bis (t-butylperoxycarboxy) butane, 1,5-bis (t-butylperoxycarboxy) ) Pentane, 1,6-bis (t-butylperoxycarboxy) hexane, 1,7-bis (t-butylperoxycarboxy) heptane, 1,8
-Bis (t-butylperoxycarboxy) octane,
Examples include 2,2-dimethyl-1,3-bis (t-butylperoxycarboxy) propane and the like.
【０００９】本発明において加硫剤として併用使用して
いるジアルキルパーオキサイドとしては、ジｔ−ブチル
パーオキサイド、ｔ−ブチルクミルパーオキサイド、ジ
クミルパーオキサイド、α，α−ビス（ｔ−ブチルパー
オキシ−ｍ−イソプロピル）ベンゼン、２，５−ジメチ
ル−２，５−ジ（ｔ−ブチルパーオキシ）ヘキサン、
２，５ジメチル−２，５−ジ（ｔ−ブチルパーオキシ）
ヘキシン−３などが例示される。Examples of dialkyl peroxides used in combination as a vulcanizing agent in the present invention include di-t-butyl peroxide, t-butyl cumyl peroxide, dicumyl peroxide, α, α-bis (t-butyl peroxide). Oxy-m-isopropyl) benzene, 2,5-dimethyl-2,5-di (t-butylperoxy) hexane,
2,5 dimethyl-2,5-di (t-butylperoxy)
Hexin-3 and the like are exemplified.
【００１０】本発明における導電性シリコーン組成物の
ゴム硬化物の硬度は特に制限されるものではなくＪＩＳ
Ａ硬度計で１５〜７０度の範囲で任意に選定できる
が、その硬度と物理強度及び導電性とのバランスのうえ
から３５〜６５度の範囲が望ましい。また、前記の導電
性シリコーン組成物における導電性付与剤としては、導
電性カーボンブラックが一般的で、アセチレンブラック
であるデンカブラック（商品名、電気化学工業株式会社
製）やオイルファーネスブラックであるトーカブラック
（商品名、東海カーボン株式会社製）、三菱導電性カー
ボン（商品名、三菱化成株式会社製）、バルカン（商品
名、キャボット社製）、プリンテックス（商品名、デグ
ッサ製）、ケッチェンブラック（商品名、アクゾ社製）
等が挙げられ、これらの導電性カーボンが適宜使用され
る。また、金属粉、金属酸化物、カーボンファイバーな
どのカーボンブラック以外の導電性付与剤を単独もしく
はカーボンブラックと併用使用してもよく、体積固有抵
抗として１０-6Ω・cm以下とすることが肝要である。The hardness of the rubber-cured product of the conductive silicone composition of the present invention is not particularly limited, and JIS
The hardness can be arbitrarily selected in the range of 15 to 70 degrees with an A hardness meter, but it is preferably in the range of 35 to 65 degrees from the viewpoint of the balance of hardness, physical strength and conductivity. Further, as the conductivity-imparting agent in the above-mentioned conductive silicone composition, conductive carbon black is generally used, and acetylene black Denka Black (trade name, manufactured by Denki Kagaku Kogyo Co., Ltd.) or oil furnace black Toka. Black (trade name, manufactured by Tokai Carbon Co., Ltd.), Mitsubishi Conductive Carbon (trade name, manufactured by Mitsubishi Kasei Co., Ltd.), Vulcan (trade name, manufactured by Cabot Corporation), Printex (trade name, manufactured by Degussa), Ketjen Black (Product name, Akzo)
Etc., and these conductive carbons are used appropriately. Further, a conductivity-imparting agent other than carbon black such as metal powder, metal oxide, and carbon fiber may be used alone or in combination with carbon black, and it is essential that the volume resistivity be 10 −6 Ω · cm or less. Is.
【００１１】充填材等の配合処方も、特に制限されるも
のではなく、硬化したシリコーン組成物層の機械的特
性、すなわち物理強度、ゴム硬度、圧縮永久歪み等を考
慮して決定されるものであり、これには、アエロジルや
Ｃａｂ−Ｏ−Ｓｉｌで代表されるヒュームドシリカ、Ｈ
ｉ−Ｓｉｌやニップシルの如き湿式シリカ、セライトや
ラジオライトの如きけいそう土、ミヌシルやクリスタラ
イトの如き石英粉などが例示され、これらの充填材を通
常は数種類組み合わせて使用する。また、熱伝導性など
の特性を付与するために、上記した充填材に加え、酸化
アルミニウム（アルミナ）、酸化チタン、酸化マグネシ
ウム、けい酸アルミニウム、酸化亜鉛、酸化鉄、炭酸カ
ルシウムなどを併用してもよい。更に、密封老化性を考
慮して酸化セリウムの如き耐熱剤や酸化マグネシウムの
如き受酸剤を加えてもよい。The compounding formulation of the filler and the like is not particularly limited and is determined in consideration of the mechanical properties of the cured silicone composition layer, that is, physical strength, rubber hardness, compression set and the like. Yes, this includes fumed silica represented by Aerosil and Cab-O-Sil, H
Examples are wet silica such as i-Sil and nipsil, diatomaceous earth such as celite and radiolite, and quartz powder such as minucil and crystallite. These fillers are usually used in combination of several kinds. In addition to the above-mentioned filler, aluminum oxide (alumina), titanium oxide, magnesium oxide, aluminum silicate, zinc oxide, iron oxide, calcium carbonate, etc. may be used in combination in order to impart properties such as thermal conductivity. Good. Further, a heat-resistant agent such as cerium oxide and an acid acceptor such as magnesium oxide may be added in consideration of the sealing aging property.
【００１２】[0012]
【実施例】以下、本発明を実施例に基づき説明すると、
１は加圧ローラーを示し、該加圧ローラー１は芯金の外
周に導電性シリコーンスポンジ層が接着され、更にその
外周に厚さ０．１mm以下のフッ素樹脂スリーブ４が被覆
されている。そして、前記の導電性シリコーンスポンジ
ゴム層３にはＸ−３０−２１０３Ｕ（信越化学工業株式
会社製商品名）の如きスポンジ用グレードが使用され
る。EXAMPLES The present invention will be described below based on examples.
Reference numeral 1 denotes a pressure roller, and the pressure roller 1 has a conductive metal sponge layer adhered to the outer periphery of a core metal, and the outer periphery thereof is covered with a fluororesin sleeve 4 having a thickness of 0.1 mm or less. A grade for sponge such as X-30-2103U (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) is used for the conductive silicone sponge rubber layer 3.
【００１３】前記した芯金２とスポンジ層３の接着は、
予め発泡剤と加硫剤とを混練りしたシリコーンゴムを、
押出機で押出して原料ゴムチューブを形成した後に、Ｈ
ＡＶ（Hot Air Vulcanization ）法やＦＢＶ（Fluidize
d Bed Vulcanization ）法などにより加熱発泡させてシ
リコーンスポンジチューブを作成し、このシリコーンス
ポンジチューブに、予めＴＳＥ３２２（東芝シリコーン
株式会社製商品名）のような付加型の接着剤を塗布した
芯金２を挿入した後、更に加熱して前記接着剤を硬化さ
せてシリコーンスポンジゴムチューブを芯金２に接着さ
せるようにしてもよいし、表面にプライマーＮＯ．８
（信越化学工業株式会社製商品名）のような接着剤を塗
布した芯金２を押出機のクロスヘッドダイを通過させて
上記芯金２上に発泡剤と加硫剤を混練りしたシリコーン
ゴム層を形成し、次いで、これを恒温槽中や加熱した金
型中で加熱発泡させると同時に接着させてもよい。上記
したいずれの接着方法でも芯金２上にシリコーンスポン
ジ層３を形成した後に、表面に形成されたスキン層を除
去するためと、外径寸法精度を得るためにスポンジ外周
を研磨する必要がある。The adhesion between the core metal 2 and the sponge layer 3 is as follows.
Silicone rubber in which a foaming agent and a vulcanizing agent are kneaded in advance,
After extruding with an extruder to form a raw rubber tube,
AV (Hot Air Vulcanization) method and FBV (Fluidize)
A silicone sponge tube is prepared by heat-foaming by a method such as d Bed Vulcanization method), and a core metal 2 in which an additional adhesive such as TSE322 (trade name of Toshiba Silicone Co., Ltd.) is previously applied to the silicone sponge tube. After inserting, the silicone sponge rubber tube may be adhered to the core metal 2 by further heating to cure the adhesive. 8
A silicone rubber in which a core metal 2 coated with an adhesive such as (Shin-Etsu Chemical Co., Ltd.) is passed through a crosshead die of an extruder to knead a foaming agent and a vulcanizing agent on the core metal 2. A layer may be formed, and then this may be heated and foamed in a thermostatic bath or in a heated mold and simultaneously bonded. In any of the above-mentioned bonding methods, after forming the silicone sponge layer 3 on the core metal 2, it is necessary to polish the outer periphery of the sponge in order to remove the skin layer formed on the surface and to obtain the accuracy of the outer diameter. .
【００１４】本実施例は、先ず、導電性シリコーンスポ
ンジゴム層３として前記したＸ−３０−２１０３Ｕを１
００重量部、加硫剤として使用するジ（アルキルパーオ
キシカーボネート）として１，６−ビス（ｔ−ブチル−
オキシカルボキシ）ヘキサンを０．７５重量部、前記加
硫剤と併用使用するジアルキルパーオキサイドとして、
ジクミルパーオキサイドを０．２重量部を配合して試料
を混練りし、発泡剤の入っていない試料を作成したもの
を実施例１とし、上記ジクミルパーオキサイドを０．４
重量部とした他は実施例１と同様の配合にて試料を混練
りし、発泡剤の入っていない試料を作成したものを実施
例２とし、上記実施例１，実施例２と比較するために、
ジクミルパーオキサイドを配合しない他は実施例１及び
実施例２と同様の配合にて混練し、発泡剤の入っていな
い試料を作成したものを比較例１とし、更に、１，６−
ビス（ｔ−ブチルパーオキシカルボキシ）ヘキサンを
１．２５重量部とした他は比較例１と同様として配合混
練した比較例２として発泡剤の入っていない試料を作成
した。これを表１に示す。In this embodiment, first, the above-mentioned X-30-2103U is used as the conductive silicone sponge rubber layer 3.
00 parts by weight, 1,6-bis (t-butyl-) as di (alkylperoxycarbonate) used as a vulcanizing agent
0.75 parts by weight of (oxycarboxy) hexane as a dialkyl peroxide used in combination with the vulcanizing agent,
Example 1 was prepared by mixing 0.2 parts by weight of dicumyl peroxide and kneading the sample to prepare a sample containing no foaming agent.
In order to compare with the above-mentioned Examples 1 and 2, the sample prepared by kneading the sample with the same composition as in Example 1 except that the parts by weight was prepared to prepare a sample containing no foaming agent was used. To
Comparative Example 1 was prepared by kneading in the same manner as in Example 1 and Example 2 except that dicumyl peroxide was not added to prepare a sample containing no foaming agent.
A sample containing no blowing agent was prepared as Comparative Example 2 which was compounded and kneaded in the same manner as Comparative Example 1 except that 1.25 parts by weight of bis (t-butylperoxycarboxy) hexane was used. This is shown in Table 1.
【００１５】[0015]
【表１】 [Table 1]
【００１６】次に、テストピースを加硫した後、２００
℃で４時間二次加硫した。この試料の物性試験結果を表
２に示すが、この試験結果から実施例１，実施例２及び
比較例２のテストピースは、比較例１のテストピースよ
り架橋密度が高いことが分かった。ここでいう架橋密度
は特公平４−３８５７９号公報に記載されるトルエン膨
潤法による架橋密度の測定を行ったものであるが、トル
エンへの浸漬試験における体積変化率も同様の傾向を示
した。すなわち架橋密度の高いゴムほど膨潤率が少ない
という結果となった。Next, after vulcanizing the test piece, 200
Secondary vulcanization was performed at 4 ° C for 4 hours. The physical property test results of this sample are shown in Table 2. From the test results, it was found that the test pieces of Example 1, Example 2 and Comparative Example 2 had a higher crosslinking density than the test piece of Comparative Example 1. The crosslinking density here is measured by the toluene swelling method described in JP-B-4-38579, and the volume change rate in the immersion test in toluene showed the same tendency. That is, the higher the crosslink density, the lower the swelling rate.
【００１７】[0017]
【表２】 [Table 2]
【００１８】次に、前記した表１に示した配合に発泡剤
であるＫＥ−Ｐ−１３（アゾビスイソブチロニトリルの
５０％シリコーンペースト、信越化学工業株式会社製商
品名）を各々２重量部加えた試料を混練りした後、全長
３３０mm、外径２０mmの芯金２を押出機のクロスヘッド
ダイを通過せしめて上記芯金２上に発泡剤と加硫剤とを
混練りした導電シリコーンゴム層を形成した後、常圧熱
気炉にて発泡させたところ表３に示すような結果とな
り、比較例２では部分的に発泡度合いの極端に大きい場
所が数箇所あり、均一なスポンジが得られないことが分
かった。Next, 2 parts each of KE-P-13 (50% silicone paste of azobisisobutyronitrile, trade name manufactured by Shin-Etsu Chemical Co., Ltd.), which is a foaming agent, is added to the composition shown in Table 1 above. After kneading the added sample, a conductive silicone in which a core metal 2 having a total length of 330 mm and an outer diameter of 20 mm is passed through a crosshead die of an extruder to knead a foaming agent and a vulcanizing agent on the core metal 2. After forming the rubber layer, foaming was performed in an atmospheric pressure hot air furnace, and the results shown in Table 3 were obtained. In Comparative Example 2, there were several places where the degree of foaming was extremely large, and a uniform sponge was obtained. I knew I couldn't.
【００１９】[0019]
【表３】 [Table 3]
【００２０】前記した比較例２での部分的な異常発泡
は、発泡温度を例えば１５０℃程度に下げることにより
解消される傾向にあるが、この場合には加硫不足に起因
する粘着感が大きく架橋密度も低くなるので耐久性が保
持できない。上記した異常発泡を解析するためにエラス
トグラフ６７．８５＜ロータレスタイプ・キュアーメー
ター＞（独ゴットフエルト社製）でこれらのシリコーン
スポンジ配合物の１８０℃での加硫速度を測定し、図２
の結果を得た。図３は、図２で得られた加硫曲線を微分
したもので、カーブが高いほどその時間での加硫速度が
速いことを示している。The above-mentioned partial abnormal foaming in Comparative Example 2 tends to be eliminated by lowering the foaming temperature to, for example, about 150 ° C. In this case, a sticky feeling due to insufficient vulcanization is large. Since the crosslink density is also low, durability cannot be maintained. In order to analyze the above-mentioned abnormal foaming, the vulcanization rate of these silicone sponge formulations at 180 ° C. was measured with an Elastograph 67.85 <rotorless type cure meter> (manufactured by Gottfelt, Germany), and FIG.
Got the result. FIG. 3 is a derivative of the vulcanization curve obtained in FIG. 2, and shows that the higher the curve, the faster the vulcanization rate at that time.
【００２１】図２，図３より、加硫剤として１，６−ビ
ス（ｔ−ブチルパーオキシカルボキシ）ヘキサンのみを
使用した比較例１，比較例２では加硫初期に加硫反応が
終了しているのに対して、ジクミルパーオキサイドを併
用した実施例１，２では９０％加硫反応が終了後も徐々
に加硫反応が進行していることが分かった。このことか
ら、特に比較例２では加硫速度と発泡剤の分解速度のバ
ランスがとれておらず、部分的な異常発泡が生じるもの
と考えられる。これに対して、実施例１，実施例２では
反応温度の異なる過酸化物を加硫剤として併用使用して
いるのでゴムの架橋密度が比較例２と同レベルで、かつ
発泡剤の分解速度とバランスがとれ均一なスポンジが得
られるものと考えられる。2 and 3, in Comparative Examples 1 and 2 in which only 1,6-bis (t-butylperoxycarboxy) hexane was used as the vulcanizing agent, the vulcanization reaction was completed at the initial stage of vulcanization. On the other hand, in Examples 1 and 2 in which dicumyl peroxide was used in combination, it was found that the vulcanization reaction gradually proceeded even after the 90% vulcanization reaction was completed. From this, it is considered that the vulcanization rate and the decomposition rate of the foaming agent are not balanced particularly in Comparative Example 2, and partial abnormal foaming occurs. On the other hand, in Examples 1 and 2, the peroxides having different reaction temperatures were used together as the vulcanizing agent, so that the crosslinking density of the rubber was at the same level as in Comparative Example 2 and the decomposition rate of the foaming agent was It is thought that a uniform and well-balanced sponge can be obtained.
【００２２】次に表３に示したスポンジローラのうち、
実施例１，実施例２及び比較例１のローラーの表層に厚
さ５０μｍのＰＦＡチューブで被覆した後、キャノン株
式会社製の複写機であるＮＰ６０３０（商品名）に取付
けて実機耐久試験を実施したところ、比較例１のローラ
ーでは３万枚の通紙時に定着不良に起因する画像不良が
発生した。そこで比較例１の製品硬度をアスカーＣ硬度
計にて測定したところ、実機耐久試験前の硬度４２度に
対し、実機耐久試験後は３６度と約６度の硬度低下がみ
られた。このため、スポンジゴム層を観察したところ部
分的にスポンジセルが破壊されて連泡状態になってお
り、この結果、製品硬度が低下して画像不良が発生した
ものと思われる。Next, among the sponge rollers shown in Table 3,
After covering the surface layers of the rollers of Examples 1, 2 and Comparative Example 1 with a PFA tube having a thickness of 50 μm, the roller was mounted on a copying machine NP6030 (trade name) manufactured by Canon Inc. to carry out an actual machine durability test. However, with the roller of Comparative Example 1, image defects due to defective fixing occurred when 30,000 sheets were passed. Therefore, when the product hardness of Comparative Example 1 was measured with an Asker C hardness meter, the hardness was 42 degrees before the actual machine endurance test, and after the actual machine endurance test, it was 36 degrees, which was a decrease of about 6 degrees. For this reason, when the sponge rubber layer was observed, the sponge cells were partially broken into an open cell state, and as a result, the product hardness was lowered and an image defect was considered to have occurred.
【００２３】これに対し、実施例１，実施例２のローラ
ーでは７万枚の実機耐久試験後も定着不良や紙しわなど
の不具合は発生せず、製品硬度の低下も約２度程度であ
り、加圧ローラーとして十分な耐久性を有していること
が分かった。実施例１，実施例２のローラーが比較例１
のローラーと比べて耐久性が良好なのは、スポンジゴム
層の架橋密度が高いうえに均一なセルが得られているた
めと考えられ、単純に加硫剤である１，６−ビス（ｔ−
ブチルパーオキシカルボキシ）ヘキサンを増量しても架
橋密度は高くなるが、比較例２に示すような部分的に極
端に発泡の大きい部分が発生し、均一なスポンジが得ら
れず加圧ローラーとしては不適切である。そのために、
ベースゴムの架橋密度は大きい方が好ましく、５×１０
-4mole/cc 以上であることが望ましい。On the other hand, in the rollers of Examples 1 and 2, defects such as fixing defects and paper wrinkles did not occur even after the endurance test of 70,000 sheets, and the decrease in product hardness was about 2 degrees. It was found that the pressure roller has sufficient durability. The rollers of Example 1 and Example 2 are Comparative Example 1
The reason why the durability is better than that of the roller is that the sponge rubber layer has a high cross-linking density and uniform cells are obtained. Simply, 1,6-bis (t-
Even if the amount of butylperoxycarboxy) hexane is increased, the crosslink density is increased, but as shown in Comparative Example 2, a part with extremely large foaming is partially generated, and a uniform sponge cannot be obtained. It is inappropriate. for that reason,
The higher the crosslink density of the base rubber is, the more preferable it is 5 × 10.
-4 mole / cc or higher is desirable.
【００２４】以上のように、本実施例においては、導電
性シリコーンスポンジゴムの加硫剤として反応温度の異
なる１，６−ビス（ｔ−ブチルパーオキシカルボキシ）
ヘキサンとジクミルパーオキサイドとを併用使用したの
で、ゴムの架橋密度を高くでき、発泡剤の分解速度とバ
ランスがとれ、均一なスポンジゴムを得ることができ、
耐久性の良好な加圧ローラーを得ることができたもので
ある。As described above, in this example, 1,6-bis (t-butylperoxycarboxy) having a different reaction temperature was used as the vulcanizing agent for the conductive silicone sponge rubber.
Since hexane and dicumyl peroxide were used together, the crosslink density of the rubber can be increased, the decomposition rate of the foaming agent can be balanced, and a uniform sponge rubber can be obtained.
It was possible to obtain a pressure roller having good durability.
【００２５】[0025]
【発明の効果】本発明に係る加圧ローラーは芯金の外周
に導電性シリコーンスポンジゴムを被覆し、更にその外
周にフッ素樹脂チューブを被覆して形成した加圧ローラ
ーの、前記導電性シリコーンスポンジゴムの加硫剤とし
て、ジ（アルキルパーオキシカーボネート）とジアルキ
ルパーオキサイドとを併用使用したので、スポンジゴム
層の架橋密度を高くすることができるとともに均一なセ
ルが得られ、この結果耐久性に極めて優れた加圧ローラ
ーを得ることができた。EFFECT OF THE INVENTION The pressure roller according to the present invention is a pressure roller formed by coating the outer periphery of a core metal with a conductive silicone sponge rubber and further coating the outer periphery thereof with a fluororesin tube. Since di (alkylperoxycarbonate) and dialkylperoxide are used together as a vulcanizing agent for rubber, the crosslink density of the sponge rubber layer can be increased and uniform cells can be obtained, resulting in improved durability. An extremely excellent pressure roller could be obtained.
【図１】加圧ローラーの縦断面図FIG. 1 is a vertical sectional view of a pressure roller.
【図２】シリコーンスポンジ配合物の１８０℃での加硫
速度を示す線図FIG. 2 is a diagram showing the vulcanization rate of a silicone sponge compound at 180 ° C.
【図３】図２を微分して示す加硫速度曲線FIG. 3 is a differential cure curve of FIG.
１ 加圧ローラー ２ 芯金 ３ 導電性シリコーンスポンジゴム層 ４ フッ素樹脂層 1 pressure roller 2 core metal 3 conductive silicone sponge rubber layer 4 fluororesin layer
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年６月２２日[Submission date] June 22, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】本発明における導電性シリコーン組成物の
ゴム硬化物の硬度は特に制限されるものではなくＪＩＳ
Ａ硬度計で１５〜７０度の範囲で任意に選定できる
が、その硬度と物理強度及び導電性とのバランスのうえ
から３５〜６５度の範囲が望ましい。また、前記の導電
性シリコーン組成物における導電性付与剤としては、導
電性カーボンブラックが一般的で、アセチレンブラック
であるデンカブラック（商品名、電気化学工業株式会社
製）やオイルファーネスブラックであるトーカブラック
（商品名、東海カーボン株式会社製）、三菱導電性カー
ボン（商品名、三菱化成株式会社製）、バルカン（商品
名、キャボット社製）、プリンテックス（商品名、デグ
ッサ製）、ケッチェンブラック（商品名、アクゾ社製）
等が挙げられ、これらの導電性カーボンが適宜使用され
る。また、金属粉、金属酸化物、カーボンファイバーな
どのカーボンブラック以外の導電性付与剤を単独もしく
はカーボンブラックと併用使用してもよく、体積固有抵
抗として１０6 Ω・cm以下とすることが肝要である。The hardness of the rubber-cured product of the conductive silicone composition of the present invention is not particularly limited, and JIS
The hardness can be arbitrarily selected in the range of 15 to 70 degrees with an A hardness meter, but it is preferably in the range of 35 to 65 degrees from the viewpoint of the balance of hardness, physical strength and conductivity. Further, as the conductivity-imparting agent in the above-mentioned conductive silicone composition, conductive carbon black is generally used, and acetylene black Denka Black (trade name, manufactured by Denki Kagaku Kogyo Co., Ltd.) or oil furnace black Toka. Black (trade name, manufactured by Tokai Carbon Co., Ltd.), Mitsubishi Conductive Carbon (trade name, manufactured by Mitsubishi Kasei Co., Ltd.), Vulcan (trade name, manufactured by Cabot Corporation), Printex (trade name, manufactured by Degussa), Ketjen Black (Product name, Akzo)
Etc., and these conductive carbons are used appropriately. Further, a conductivity-imparting agent other than carbon black such as metal powder, metal oxide, and carbon fiber may be used alone or in combination with carbon black, and it is essential that the volume resistivity is 10 6 Ω · cm or less. is there.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１４】本実施例は、先ず、導電性シリコーンスポ
ンジゴム層３として前記したＸ−３０−２１０３Ｕを１
００重量部、加硫剤として使用するジ（アルキルパーオ
キシカーボネート）として１，６−ビス（ｔ−ブチル−
パーオキシカルボキシ）ヘキサンを０．７５重量部、前
記加硫剤と併用使用するジアルキルパーオキサイドとし
て、ジクミルパーオキサイドを０．２重量部を配合して
試料を混練りし、発泡剤の入っていない試料を作成した
ものを実施例１とし、上記ジクミルパーオキサイドを
０．４重量部とした他は実施例１と同様の配合にて試料
を混練りし、発泡剤の入っていない試料を作成したもの
を実施例２とし、上記実施例１，実施例２と比較するた
めに、ジクミルパーオキサイドを配合しない他は実施例
１及び実施例２と同様の配合にて混練し、発泡剤の入っ
ていない試料を作成したものを比較例１とし、更に、
１，６−ビス（ｔ−ブチルパーオキシカルボキシ）ヘキ
サンを１．２５重量部とした他は比較例１と同様として
配合混練した比較例２として発泡剤の入っていない試料
を作成した。これを表１に示す。In this embodiment, first, the above-mentioned X-30-2103U is used as the conductive silicone sponge rubber layer 3.
00 parts by weight, 1,6-bis (t-butyl-) as di (alkylperoxycarbonate) used as a vulcanizing agent
0.75 parts by weight of peroxycarboxy ) hexane and 0.2 parts by weight of dicumyl peroxide as a dialkyl peroxide used in combination with the vulcanizing agent are mixed and kneaded to obtain a foaming agent. A sample without a foaming agent was kneaded in the same manner as in Example 1 except that the dicumyl peroxide was 0.4 part by weight. The prepared product was used as Example 2, and for comparison with Examples 1 and 2 described above, kneading was carried out in the same manner as in Examples 1 and 2 except that dicumyl peroxide was not added, and a foaming agent was used. Comparative example 1 was prepared by preparing a sample containing no
A sample containing no foaming agent was prepared as Comparative Example 2 which was compounded and kneaded in the same manner as Comparative Example 1 except that 1.25 parts by weight of 1,6-bis (t-butylperoxycarboxy) hexane was used. This is shown in Table 1.
Claims (2)
スポンジゴムの外周にフッ素樹脂チューブを被覆して形
成した加圧ローラーにおいて、前記導電性シリコーンス
ポンジゴムを、その加硫剤としてジ（アルキルパーオキ
シカーボネート）とジアルキルパーオキサイドとを併用
使用して加硫成形したことを特徴とする加圧ローラー。1. A pressure roller formed by coating a fluororesin tube on the outer periphery of a conductive silicone sponge rubber coated on the outer periphery of a core metal, wherein the conductive silicone sponge rubber is used as a vulcanizing agent for di (alkyl). A pressure roller characterized by being vulcanized and molded using a combination of (peroxycarbonate) and dialkyl peroxide.
が１，６−ビス（ｔ−ブチルパーオキシカルボキシ）ヘ
キサンであり、ジアルキルパーオキサイドがジクミルパ
ーオキサイドである請求項１記載の加圧ローラー。2. Di (alkyl peroxycarbonate)
Is 1,6-bis (t-butylperoxycarboxy) hexane, and the dialkyl peroxide is dicumyl peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5260444A JP2732348B2 (en) | 1993-09-27 | 1993-09-27 | Manufacturing method of pressure roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5260444A JP2732348B2 (en) | 1993-09-27 | 1993-09-27 | Manufacturing method of pressure roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0792841A true JPH0792841A (en) | 1995-04-07 |
| JP2732348B2 JP2732348B2 (en) | 1998-03-30 |
Family
ID=17348028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5260444A Expired - Lifetime JP2732348B2 (en) | 1993-09-27 | 1993-09-27 | Manufacturing method of pressure roller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2732348B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0762235A1 (en) * | 1995-09-08 | 1997-03-12 | Canon Kabushiki Kaisha | Fixing roller having low resistance layer and fixing apparatus using same |
| JP2020052315A (en) * | 2018-09-28 | 2020-04-02 | 住友理工株式会社 | Fixation member |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6198763A (en) * | 1984-10-22 | 1986-05-17 | Toshiba Silicone Co Ltd | Silicone rubber composition |
| JPH0543802A (en) * | 1990-12-28 | 1993-02-23 | Shin Etsu Chem Co Ltd | Conductive silicone rubber composition and conductive silicone rubber |
| JPH05142961A (en) * | 1991-11-18 | 1993-06-11 | Showa Electric Wire & Cable Co Ltd | Elastic roller |
-
1993
- 1993-09-27 JP JP5260444A patent/JP2732348B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6198763A (en) * | 1984-10-22 | 1986-05-17 | Toshiba Silicone Co Ltd | Silicone rubber composition |
| JPH0543802A (en) * | 1990-12-28 | 1993-02-23 | Shin Etsu Chem Co Ltd | Conductive silicone rubber composition and conductive silicone rubber |
| JPH05142961A (en) * | 1991-11-18 | 1993-06-11 | Showa Electric Wire & Cable Co Ltd | Elastic roller |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0762235A1 (en) * | 1995-09-08 | 1997-03-12 | Canon Kabushiki Kaisha | Fixing roller having low resistance layer and fixing apparatus using same |
| US5724637A (en) * | 1995-09-08 | 1998-03-03 | Canon Kabushiki Kaisha | Fixing roller having low resistance layer and fixing apparatus using same |
| JP2020052315A (en) * | 2018-09-28 | 2020-04-02 | 住友理工株式会社 | Fixation member |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2732348B2 (en) | 1998-03-30 |
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