JPH02127337A - Electrically conductive elastic roller - Google Patents
Electrically conductive elastic rollerInfo
- Publication number
- JPH02127337A JPH02127337A JP63280745A JP28074588A JPH02127337A JP H02127337 A JPH02127337 A JP H02127337A JP 63280745 A JP63280745 A JP 63280745A JP 28074588 A JP28074588 A JP 28074588A JP H02127337 A JPH02127337 A JP H02127337A
- Authority
- JP
- Japan
- Prior art keywords
- silicone rubber
- titanium oxide
- weight
- treated
- parts
- 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.)
- Pending
Links
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 29
- 239000004945 silicone rubber Substances 0.000 claims abstract description 29
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000002216 antistatic agent Substances 0.000 claims description 10
- 150000004706 metal oxides Chemical class 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 abstract description 10
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 230000003449 preventive effect Effects 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 11
- 239000000203 mixture Substances 0.000 description 6
- 230000007774 longterm Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 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
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Paper Feeding For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、ファクシミリのスキャナ部等に好適するロー
ラに間する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a roller suitable for a facsimile scanner unit, etc.
（従来の技術）
従来から、ファクシミリのスキャナ部に使用されるロー
ラとして、シリコーンゴム材料をアルミ等からなる金属
芯軸上にブライマーを介して１５！覆したものが一般に
用いられている。(Prior Art) Conventionally, as a roller used in the scanner part of a facsimile machine, a silicone rubber material is placed on a metal core shaft made of aluminum or the like through a brimer. The reverse version is generally used.
しかしながら、一般にシリコーンゴムは体積抵抗率が１
ＱＩＯ〜１Ｑ１８Ωｃｍと大きいため、ゴム表面に電荷
がたまり、ローラが帯電しやすくなる。However, silicone rubber generally has a volume resistivity of 1.
Since QIO~1Q18Ωcm is large, electric charge accumulates on the rubber surface and the roller becomes easily charged.
このため、ファクシミリの使用中には紙等の被搬送物が
ローラに巻きついたり、塵埃がローラに付着してしまう
等の問題があった。For this reason, during use of the facsimile, there are problems such as paper or other conveyed objects getting wrapped around the rollers and dust adhering to the rollers.
（発明が解決しようとする課題）
このため、従来から帯電防止効果のあるローラとして帯
電防止剤、金属粉、カーボン等を添加したゴムを用いた
もの等が提案されている。しかし、帯電防止剤を添加し
たものは、しばらく使用すると帯電防止効果が著しく低
下してしまい、長間閘の使用に耐えないという問題を有
している。また、Ｎｉ、Ａｇ等の金属粉を添加したもの
は、体積抵抗率は低下するものの、コストが高くなる等
の問題があり殆ど実施されていないのが現状である。(Problems to be Solved by the Invention) For this reason, rollers using rubber to which antistatic agents, metal powder, carbon, etc. are added have been proposed as rollers having an antistatic effect. However, those to which an antistatic agent is added have the problem that the antistatic effect decreases significantly after being used for a while, and they cannot withstand long-term use in locks. Furthermore, although the volume resistivity is lowered by adding metal powder such as Ni or Ag, there are problems such as an increase in cost, and the present situation is that this is hardly ever implemented.
最も多用されているのはカーボンを添加したゴムを用い
るものだが、カーボンを多量に添加するとゴムから脱落
してくるカーボンが紙を汚し、またゴム硬度が大きくな
るためスキャナセンサとローラとの間のニップ巾が充分
に得られない、ざらにローラが有色であるため光を吸収
しやすく、文字の輪郭がぼやける等の画質低下が生ずる
等の問題を有している。The most commonly used rubber is one that uses carbon added, but if a large amount of carbon is added, the carbon that falls off from the rubber will stain the paper, and the hardness of the rubber will increase, making it difficult to bond between the scanner sensor and the roller. There are problems such as not being able to obtain a sufficient nip width, and because the rough rollers are colored, they tend to absorb light, resulting in deterioration in image quality such as blurring of the outline of characters.
そこで本発明はこのような従来の間Ｈを解決するために
なされたもので、ゴム硬度を小さく保ちながらシリコー
ンゴムの体積抵抗率を低下させて帯電防止効果を向上さ
せるとともに、高画質の画像が得られる導電性弾性体ロ
ーラを提供することを目的とする。Therefore, the present invention has been made to solve the problem of conventional H, and it improves the antistatic effect by lowering the volume resistivity of silicone rubber while keeping the rubber hardness low, and also makes it possible to obtain high-quality images. An object of the present invention is to provide a conductive elastic roller that can be obtained.
［発明の構成］
（課題を解決するための手段）
本願第１の発明は、芯金上にシリコーンゴム層を形成し
てなろローラにおいて、前記シリコーンゴム層はシリコ
ーンゴム１００重量部に対して、帯電防止剤で表面処理
した酸化チタン０．０１〜５０重量部または導電性金属
酸化物で表面処理した酸化チタン０．０１〜３００重量
部を配合してなることを特徴とする導電性弾性体ローラ
に間する。[Structure of the Invention] (Means for Solving the Problems) The first invention of the present application is a roll roller in which a silicone rubber layer is formed on a core bar, in which the silicone rubber layer is composed of: A conductive elastic roller comprising 0.01 to 50 parts by weight of titanium oxide whose surface has been treated with an antistatic agent or 0.01 to 300 parts by weight of titanium oxide whose surface has been treated with a conductive metal oxide. in between.
本願第１の発明のローラは、シリコーンゴムに帯電防止
剤または導電性金属酸化物で表面処理した酸化チタンを
配合するので、高画質の画像が得られ、低硬度で長間に
渡って優れた帯電防止効果を発揮することができる。The roller of the first invention of the present application blends silicone rubber with titanium oxide whose surface is treated with an antistatic agent or a conductive metal oxide, so it can obtain high-quality images and has low hardness and excellent long-term durability. It can exhibit an antistatic effect.
本願第１の発明におけるシリコーンゴム層のシリコーン
ゴムとしては、ローラに通常使用されているジメチルポ
リシロキサンゴム、メチルフェニルポリシロキサンゴム
等の市販品を使用することができる。As the silicone rubber for the silicone rubber layer in the first invention of the present application, commercially available products such as dimethylpolysiloxane rubber and methylphenylpolysiloxane rubber, which are commonly used for rollers, can be used.
本願第１の発明における酸化チタンとしては、酸化チタ
ン１００重量部を、帯電防止剤０．３〜６重量部あるい
は導電性金属酸化物０．１〜１００重量部で表面処理し
たものを用いる０表面処理剤がこれより少ないと、充分
な帯電防止効果が得られず、またこれより多くても効果
の向上が認められない。帯電防止剤としては、公知のも
のを特に制限舞く使用することができ、例えばＥＦ５０
１（三菱金属株式会社製 商品名）等がある。ＥＦ５０
１は、ＣＩＩＦ １ｔＳ Ｏ３Ｎ ａとを約１：１（重
量比）に混合したフッ素系混合物である０本発明におい
ては、これらの帯電防止剤を酸化チタン表面にスプレー
塗布等により付着させて用いる。また導電性金属酸化物
で表面処理した酸化チタンとしては、市販のＷ−１、Ｗ
−１０（以上、三菱金属株式会社製 商品名）等がある
。As the titanium oxide in the first invention of the present application, 100 parts by weight of titanium oxide is surface-treated with 0.3 to 6 parts by weight of an antistatic agent or 0.1 to 100 parts by weight of a conductive metal oxide. If the amount of the treating agent is less than this, a sufficient antistatic effect cannot be obtained, and if the amount is more than this, no improvement in the effect is observed. As the antistatic agent, known ones can be used with particular restrictions, for example, EF50
1 (manufactured by Mitsubishi Metals Co., Ltd., product name). EF50
1 is a fluorine-based mixture mixed with CIIF 1tS O3N a at a ratio of about 1:1 (weight ratio). In the present invention, these antistatic agents are used by being attached to the surface of titanium oxide by spray coating or the like. In addition, as titanium oxide surface-treated with conductive metal oxide, commercially available W-1, W
-10 (the above are product names manufactured by Mitsubishi Metals Co., Ltd.), etc.
導電性金属酸化物は、非化学量論的金属酸化物とよばれ
るものであり、例えば導電性酸化スズ、導電性酸化アン
チモン等がある。本発明において表面処理を施される基
材として酸化チタンを用いる理由は、ファクシミリのス
キャナ部に使用するローラとして充分な白色性が得られ
るからである。The conductive metal oxide is called a non-stoichiometric metal oxide, and includes, for example, conductive tin oxide, conductive antimony oxide, and the like. The reason why titanium oxide is used as the base material to be surface-treated in the present invention is that it provides sufficient whiteness as a roller used in the scanner section of a facsimile.
このローラ部分が光を吸収しやすい有色であると、得ら
れる印刷物の文字の輪郭がぼやけろ等の画質低下が起こ
る。If this roller portion is colored and easily absorbs light, image quality will deteriorate, such as blurring of the outlines of characters on the resulting printed matter.
そして、上述の酸化チタンをシリコーンゴム１００重量
部に対して、０．０１〜５０重量部添加する。このよう
にして得られたシリコーンゴム層は、白色で体積抵抗率
が１０７〜１０１０Ωｅｔａ程度であり１．ｌｌ５−Ａ
硬度は７０°以下である。酸化チタンの添加量が０．０
１１量部より少ないと充分な帯電防止効果および白色性
が得られず、５０重量部より多いと比重、コストともに
高くなり実用に適さない。Then, 0.01 to 50 parts by weight of the above titanium oxide is added to 100 parts by weight of silicone rubber. The silicone rubber layer thus obtained is white in color and has a volume resistivity of approximately 107 to 1010 Ωeta. ll5-A
Hardness is 70° or less. Added amount of titanium oxide is 0.0
If it is less than 11 parts by weight, sufficient antistatic effect and whiteness cannot be obtained, and if it is more than 50 parts by weight, both specific gravity and cost become high, making it unsuitable for practical use.
また、さらに厳しい帯電防止効果が求められる場合には
、本願第２の発明に示すように、芯金上に、カーボンを
含有する体積抵抗率１００〜１０５Ω０のシリコーンゴ
ム層を形成し、さらにこの上にシリコーンゴム１００重
量部に対して帯電防止剤または導電性金属酸化物で表面
処理した酸化チタン０．０１〜５０重量部を添加してな
るシリコーンゴム層を設けることを特徴する熱定着ロー
ラを使用することができる。In addition, when a more severe antistatic effect is required, as shown in the second invention of the present application, a silicone rubber layer containing carbon and having a volume resistivity of 100 to 105 Ω0 is formed on the core bar, and then A heat fixing roller is used in which a silicone rubber layer is provided by adding 0.01 to 50 parts by weight of titanium oxide surface-treated with an antistatic agent or a conductive metal oxide to 100 parts by weight of silicone rubber. can do.
本願第２の発明におけろ芯金上のシリコーンゴムＮ（以
下、下層という）は、導電性の高いカーボンあるいはカ
ーボンブラックを添加してなる体積抵抗率１００〜１０
５Ω止の黒色のゴム層である。In the second invention of the present application, the silicone rubber N (hereinafter referred to as the lower layer) on the core bar has a volume resistivity of 100 to 10 and is made by adding highly conductive carbon or carbon black.
It is a black rubber layer that stops at 5Ω.
この上に本ａ第ｉの発明と同様の配合のシリコーンゴム
Ｉｌ＋（以下、上層という）を被覆して導電性弾性体ロ
ーラを得る。This is coated with silicone rubber Il+ (hereinafter referred to as upper layer) having the same composition as in the ai-th invention to obtain a conductive elastic roller.
なお、本発明の導電性弾性体ローラは、芯金を脱脂、洗
浄等の通常の処理してブライマーを塗布した後、上述の
シリコーンゴム層を巻きつけて金型でプレス成型するか
、あるいは押出し成型により形成する。In addition, the conductive elastic roller of the present invention can be produced by performing normal treatments such as degreasing and washing the core metal and applying a brimer, and then wrapping the silicone rubber layer as described above and press-molding it in a mold, or by extruding it. Formed by molding.
（作用）
本発明においては、導電性付与剤として表面処理された
酸化チタンを用いているので、高画質の印刷物が得られ
、帯電防止効果に優れ、長期の使用にも充分耐え得る。(Function) In the present invention, since surface-treated titanium oxide is used as the conductivity imparting agent, high-quality printed matter can be obtained, excellent antistatic effect, and sufficient durability for long-term use.
（実施例） 以下、本発明の実施例について記載する。(Example) Examples of the present invention will be described below.
実施例１〜３
直径８ＩＩＩＩ１１の金属芯金上にブライマーを介して
、第１表に示す配合でシリコーンゴム層を被覆した（外
径 １６ｎｎ＋、ゴム被覆長 ２２０ｍｍ）。Examples 1 to 3 A silicone rubber layer was coated on a metal core having a diameter of 8III11 via a brimer according to the formulation shown in Table 1 (outer diameter: 16 nn+, rubber coating length: 220 mm).
得られたローラの硬度および体積抵抗率を測定した。ま
た、ローラをファクシミリに紺み込み、得られる画質の
文字の輪郭が鮮明なものを○、ややぼやけるものをΔ、
ぼやけろものを×とした。The hardness and volume resistivity of the obtained roller were measured. In addition, when the roller is inserted into the facsimile machine, the resulting image quality is ○ if the outline of the characters is clear, and Δ if it is slightly blurred.
Blurry items were marked as ×.
結果を第１表に示す。The results are shown in Table 1.
実施例４
直径８１ＷＩＩ＋の金属芯金上にブライマーを介して第
１表に示す配合で下層を被覆した後、外径１５ｍｍに研
削した。その上に、シリコーンゴム１００重量部に対し
て、酸化チタン粉末に導電性酸化スズを１＝１の割合で
コーティングしたもの１００ｉｌＩ量部を配合した上層
を被覆して、ローラを製造した（外径 １６ｎｖ、ゴム
被覆長２２０ａ＋ｍ）、実施例１と同様にして試験した
結果を第１表に示す。Example 4 A metal core having a diameter of 81 WII+ was coated with a lower layer using the composition shown in Table 1 via a brimer, and then ground to an outer diameter of 15 mm. A roller was then manufactured by coating an upper layer containing 100 parts by weight of silicone rubber and 100 parts by weight of titanium oxide powder coated with conductive tin oxide at a ratio of 1=1. Table 1 shows the results of the test conducted in the same manner as in Example 1.
比較例１〜２
第１表に示す配合のシリコーンゴム層を、実施例１と同
様の芯金１に被覆してローラを製造し、実施例１と同様
に試験した。結果を第１表に示す。Comparative Examples 1 to 2 A roller was manufactured by coating the same core bar 1 as in Example 1 with a silicone rubber layer having the composition shown in Table 1, and was tested in the same manner as in Example 1. The results are shown in Table 1.
（以下余白）
［発明の効果］
本発明の導電性弾性体ローラは、充分な白色性を有し、
低硬度で帯電防止効果に優れ、長間の使用にも充分耐え
得る。(The following is a blank space) [Effects of the invention] The conductive elastic roller of the present invention has sufficient whiteness,
It has low hardness, excellent antistatic effect, and can withstand long-term use.
Claims (2)
において、前記シリコーンゴム層はシリコーンゴム１０
０重量部に対して、帯電防止剤で表面処理した酸化チタ
ン０．０１〜５０重量部または導電性金属酸化物で表面
処理した酸化チタン０．０１〜３００重量部を配合して
なることを特徴とする導電性弾性体ローラ。(1) In a roller formed by forming a silicone rubber layer on a core metal, the silicone rubber layer has silicone rubber 10
0 parts by weight, 0.01 to 50 parts by weight of titanium oxide surface-treated with an antistatic agent or 0.01 to 300 parts by weight of titanium oxide surface-treated with a conductive metal oxide. A conductive elastic roller.
０〜１０＾５Ωｃｍのシリコーンゴム層を設け、さらに
この上にシリコーンゴム１００重量部に対して、帯電防
止剤で表面処理した酸化チタン０．０１〜５０重量部ま
たは導電性金属酸化物で表面処理した酸化チタン０．０
１〜３００重量部を配合してなるシリコーンゴム層を設
けることを特徴する導電性弾性体ローラ。(2) Volume resistivity 10^ containing carbon on the core metal
A silicone rubber layer of 0 to 10^5 Ωcm is provided, and the surface is further treated with 0.01 to 50 parts by weight of titanium oxide surface-treated with an antistatic agent or a conductive metal oxide per 100 parts by weight of silicone rubber. titanium oxide 0.0
A conductive elastic roller comprising a silicone rubber layer containing 1 to 300 parts by weight of silicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63280745A JPH02127337A (en) | 1988-11-07 | 1988-11-07 | Electrically conductive elastic roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63280745A JPH02127337A (en) | 1988-11-07 | 1988-11-07 | Electrically conductive elastic roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02127337A true JPH02127337A (en) | 1990-05-16 |
Family
ID=17629364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63280745A Pending JPH02127337A (en) | 1988-11-07 | 1988-11-07 | Electrically conductive elastic roller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02127337A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5270768A (en) * | 1991-04-24 | 1993-12-14 | Canon Kabushiki Kaisha | Charging member containing reduced titanium oxide and device using same |
| JPH07309494A (en) * | 1994-05-19 | 1995-11-28 | Beloit Technol Inc | Support roll or pressure roll in paper roll take-up machine |
| EP1856189A1 (en) * | 2005-01-14 | 2007-11-21 | E.I. du Pont de Nemours and Company | Antistatic agent for polymers |
| US20170045838A1 (en) * | 2012-10-15 | 2017-02-16 | Hewlett-Packard Development Company, L.P. | Charge roller for electrographic printer |
-
1988
- 1988-11-07 JP JP63280745A patent/JPH02127337A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5270768A (en) * | 1991-04-24 | 1993-12-14 | Canon Kabushiki Kaisha | Charging member containing reduced titanium oxide and device using same |
| JPH07309494A (en) * | 1994-05-19 | 1995-11-28 | Beloit Technol Inc | Support roll or pressure roll in paper roll take-up machine |
| USRE37657E1 (en) | 1994-05-19 | 2002-04-16 | Beloit Technologies, Inc. | Support or pressure roll for a paper roll winder |
| EP1856189A1 (en) * | 2005-01-14 | 2007-11-21 | E.I. du Pont de Nemours and Company | Antistatic agent for polymers |
| EP1856189A4 (en) * | 2005-01-14 | 2010-12-29 | Du Pont | Antistatic agent for polymers |
| US20170045838A1 (en) * | 2012-10-15 | 2017-02-16 | Hewlett-Packard Development Company, L.P. | Charge roller for electrographic printer |
| US10254676B2 (en) * | 2012-10-15 | 2019-04-09 | Hewlett-Packard Development Company, L.P. | Charge roller for electrographic printer |
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