JPH0464067B2 - - Google Patents
Info
- Publication number
- JPH0464067B2 JPH0464067B2 JP59194318A JP19431884A JPH0464067B2 JP H0464067 B2 JPH0464067 B2 JP H0464067B2 JP 59194318 A JP59194318 A JP 59194318A JP 19431884 A JP19431884 A JP 19431884A JP H0464067 B2 JPH0464067 B2 JP H0464067B2
- Authority
- JP
- Japan
- Prior art keywords
- silicone rubber
- less
- cleaning roll
- particle size
- filler
- 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 229920002379 silicone rubber Polymers 0.000 claims description 22
- 239000004945 silicone rubber Substances 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 9
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 4
- 229910002012 Aerosil® Inorganic materials 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 3
- 239000012763 reinforcing filler Substances 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- -1 polysiloxane Polymers 0.000 description 2
- 229910021538 borax Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0058—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a roller or a polygonal rotating cleaning member; Details thereof, e.g. surface structure
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Description
【発明の詳細な説明】
「発明の利用分野」
この発明は、静電複写機の感光体ドラムに回転
しながら圧接して表面に付着したトナーを除去す
るためクリーニングロール、特にその被覆シリコ
ーンゴムの改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Application of the Invention This invention relates to a cleaning roll, particularly a silicone rubber coated cleaning roll, for removing toner adhering to the surface of a photosensitive drum of an electrostatic copying machine by contacting it with pressure while rotating. It is about improvement.
「従来の技術」
一般に、クリーニングロールは、金属芯金の周
囲にシリコーンゴムを被覆したもの、あるいは金
属芯金の周囲にスポンジゴムを被覆してその上に
シリコーンゴムを被覆したものが使用されてい
る。"Prior Art" Generally, cleaning rolls are made of a metal core coated with silicone rubber, or a metal core coated with sponge rubber and then silicone rubber coated on top. There is.
ところで、シリコーンゴムとしては、熱加硫型
シリコーンゴム、室温加硫型シリコーンゴム及び
液状シリコーンゴムなどが知られている。そし
て、室温加硫型シリコーンゴム及び液状シリコー
ンゴムは共に室温では液体状になつているもの
で、前者は室温で加硫が進行して硬化物になるの
に対し、後者は熱を加えることにより加硫が進行
して硬化物になる点において相違しているが、以
下では両者を含めて液状シリコーンゴムと呼ぶこ
ととする。 By the way, as silicone rubber, heat vulcanizable silicone rubber, room temperature vulcanizable silicone rubber, liquid silicone rubber, etc. are known. Room-temperature vulcanization type silicone rubber and liquid silicone rubber are both in a liquid state at room temperature, and while the former is cured at room temperature by vulcanization, the latter is cured by applying heat. Although they are different in that vulcanization progresses to form a cured product, hereinafter both will be collectively referred to as liquid silicone rubber.
従来のクリーニングロールとして使用されてい
る液状シリコーンゴムは、ポリシロキサンに充填
剤、架橋剤、触媒、顔料などを均質に混練したも
のが使用されているが、特に強度及び耐摩耗性を
向上するために補強性充填材として乾式シリカ
（煙霧法シリカ）が配合されている。そして、こ
の乾式シリカは多量に配合すると粘性が高くな
り、ロール成形に際して成形性及びクリーニング
ロールとしての適当な表面粗度や均一な外径寸法
を得るためのグラインダーによる研削性を悪くす
るため、乾式シリカと共に石英粉、炭酸カルシウ
ム等の増量充填材が配合されている。 The liquid silicone rubber used in conventional cleaning rolls is made by homogeneously kneading polysiloxane with fillers, crosslinking agents, catalysts, pigments, etc. Pry silica (fumed silica) is added as a reinforcing filler. When this dry-processed silica is blended in a large amount, its viscosity becomes high, which impairs the formability during roll forming, the grindability with a grinder to obtain an appropriate surface roughness as a cleaning roll, and a uniform outer diameter. Along with silica, bulking fillers such as quartz powder and calcium carbonate are blended.
「発明が解決しようとする問題点」
ところが、従来このようなシリコーンゴムを被
覆したクリーニングロールを使用すると、感光体
ドラム表面に傷が付き、コピー画像が不鮮明にな
つたり、汚れたりする問題があつた。そこで、本
願発明者らはこの問題について種々研究実験を重
ねた結果、この傷付きの原因としてシリコーンゴ
ムに配合する充填材の粒度と硬さに影響すること
が判明した。``Problems to be Solved by the Invention'' However, conventional cleaning rolls coated with silicone rubber have caused problems such as scratches on the surface of the photoreceptor drum, making the copied image unclear or smudged. Ta. The inventors of the present application conducted various research experiments regarding this problem, and as a result, it became clear that the cause of this damage is affected by the particle size and hardness of the filler added to the silicone rubber.
「問題点を解決するための技術手段」
この発明は前記従来の課題を解決するために、
クリーニングロールの少なくとも表層の被覆シリ
コーンゴム加硫物を、液状シリコーンゴムに粒子
の大きさが1μ以下の乾式シリカと、モース硬度
が３以下の粉体を増量充填材として混練した配合
物ですることにより、感光体ドラム表面の傷をコ
ピー画像の鮮明度や汚れに影響のない極く軽微な
程度に抑えうるようにしたものである。"Technical means for solving the problems" In order to solve the above-mentioned conventional problems, this invention
The coating silicone rubber vulcanizate on at least the surface layer of the cleaning roll is made of a mixture obtained by kneading liquid silicone rubber with dry silica with a particle size of 1 μ or less and powder with a Mohs hardness of 3 or less as an extender filler. This makes it possible to suppress scratches on the surface of the photosensitive drum to a very slight level that does not affect the clarity or stains of the copied image.
この発明のクリーニングロール被覆シリコーン
ゴムは、液状シリコーンゴムに補強性充填材とし
て粒子の大きさが1μ以下の乾式シリカを配合し、
更にこの乾式シリカ配合の増粘性による成形性及
び成形したロールの研削性などの作業性を改業す
るための増量充填材として、モース硬度が３以
下、望ましくは２以下の充填材として、けいそう
土（モース硬度１〜1.5）、ほう砂（モース硬度２
〜2.5）を配合したものからなつている。 The cleaning roll-coated silicone rubber of the present invention is obtained by blending dry silica with a particle size of 1 μm or less as a reinforcing filler into liquid silicone rubber.
Furthermore, silica is used as a filler with a Mohs hardness of 3 or less, preferably 2 or less, to improve workability such as moldability and grindability of the formed roll due to the thickening properties of this dry silica compound. Soil (Mohs hardness 1-1.5), Borax (Mohs hardness 2)
~2.5).
本発明者らの実験によると、シリコーンゴムに
使われる乾式シリカは粒子の大きさが1μ以下で
あり、感光体ドラムの表面の傷が極めて微小で、
コピー画像の鮮明度等に全く影響しないことが判
明した。このような乾式シリカとしては、現在市
販されているもののほとんどが1μ以下であるこ
とからいずれのものをも用いることができるが、
例えば粒子径50〜70mμである商標名アエロジル
（日本アエロジル株式会社製造）などを用いるこ
とができる。 According to experiments conducted by the present inventors, the particle size of dry silica used in silicone rubber is 1μ or less, and scratches on the surface of the photoreceptor drum are extremely small.
It was found that the sharpness of the copied image was not affected at all. Most of the currently commercially available dry silicas have a particle size of 1μ or less, so any type of dry silica can be used.
For example, Aerosil (trade name, manufactured by Nippon Aerosil Co., Ltd.), which has a particle size of 50 to 70 mμ, can be used.
一方、モース硬度が３以下、望ましくは２以下
の増量充填剤を用いると、その粒子径が1μ以上
10μ以内であつても感光体ドラムにほとんど傷が
付かずコピー画像の鮮明度等に全く影響しないこ
とも判明した。このような増量充填剤としては、
例えば、商標名ラジオライトＦ（昭和工業株式会
社製造）、商標名セライト（ジヨンスマンビル社
製造）を用いることができる。 On the other hand, if an extender filler with a Mohs hardness of 3 or less, preferably 2 or less, is used, the particle size will be 1μ or more.
It was also found that even if it was within 10μ, the photosensitive drum was hardly scratched and the clarity of the copied image was not affected at all. Such extender fillers include:
For example, the trade name Radiolite F (manufactured by Showa Kogyo Co., Ltd.) and the trade name Celite (manufactured by Jones Manville Co., Ltd.) can be used.
「実施例」
液状シリコーンゴムに所定量の架橋剤、触媒な
どと共に補強性充填剤として商標名アエロジル１
〜25重量部、増量充填剤として商標名ラジオライ
トF1〜40重量部を配合混練したシリコーンゴム
を用いてクリーニングロールを成形し、これを感
光体ドラムの表面に圧接して100時間使用したと
ころ、感光体ドラムの表面にはほとんど傷が見ら
れず、コピー画像の鮮明度はクリーニングロール
使用開始前と全く変化はみられなかつた。"Example" Aerosil 1 (trade name) was added as a reinforcing filler to liquid silicone rubber along with a predetermined amount of crosslinking agent, catalyst, etc.
A cleaning roll was formed using silicone rubber mixed and kneaded with ~25 parts by weight and ~40 parts by weight of the trade name Radiolite F1 as an extender filler, and this was pressed against the surface of a photoreceptor drum and used for 100 hours. Almost no scratches were observed on the surface of the photosensitive drum, and the sharpness of the copied image did not change at all from before the use of the cleaning roll.
Claims (1)
る被覆シリコーンゴム加硫物が、液状シリコーン
ゴムに粒子の大きさが1μ以下の乾式シリカとモ
ース硬度が３以下の粉体を充填材として混練した
配合物であることを特徴とするクリーニングロー
ル。1. The coating silicone rubber vulcanizate on at least the surface layer of the cleaning roll is a mixture of liquid silicone rubber mixed with dry silica with a particle size of 1μ or less and powder with a Mohs hardness of 3 or less as a filler. A cleaning roll with special features.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19431884A JPS6172278A (en) | 1984-09-17 | 1984-09-17 | Cleaning roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19431884A JPS6172278A (en) | 1984-09-17 | 1984-09-17 | Cleaning roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6172278A JPS6172278A (en) | 1986-04-14 |
| JPH0464067B2 true JPH0464067B2 (en) | 1992-10-13 |
Family
ID=16322603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19431884A Granted JPS6172278A (en) | 1984-09-17 | 1984-09-17 | Cleaning roller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6172278A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61100780A (en) * | 1984-10-23 | 1986-05-19 | Canon Inc | Cleaning device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5684782A (en) * | 1979-12-14 | 1981-07-10 | Fuji Electric Co Ltd | Cleaning abrasive material for electrophotographic photosensitive material |
| JPS57176083A (en) * | 1981-04-04 | 1982-10-29 | Copyer Co Ltd | Photoreceptor cleaning method of electrostatic copying machine |
-
1984
- 1984-09-17 JP JP19431884A patent/JPS6172278A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5684782A (en) * | 1979-12-14 | 1981-07-10 | Fuji Electric Co Ltd | Cleaning abrasive material for electrophotographic photosensitive material |
| JPS57176083A (en) * | 1981-04-04 | 1982-10-29 | Copyer Co Ltd | Photoreceptor cleaning method of electrostatic copying machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6172278A (en) | 1986-04-14 |
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