JPH0367830A - Paper feed roll - Google Patents
Paper feed rollInfo
- Publication number
- JPH0367830A JPH0367830A JP19988289A JP19988289A JPH0367830A JP H0367830 A JPH0367830 A JP H0367830A JP 19988289 A JP19988289 A JP 19988289A JP 19988289 A JP19988289 A JP 19988289A JP H0367830 A JPH0367830 A JP H0367830A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- paper feed
- feed roll
- parts
- rubber layer
- 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
- 229920001971 elastomer Polymers 0.000 claims abstract description 46
- 239000005060 rubber Substances 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 16
- 229920000636 poly(norbornene) polymer Polymers 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 12
- 239000006229 carbon black Substances 0.000 claims abstract description 11
- 230000006866 deterioration Effects 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 13
- 235000019241 carbon black Nutrition 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000004073 vulcanization Methods 0.000 description 5
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 4
- 230000003712 anti-aging effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 241000872198 Serjania polyphylla Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
- PGAXJQVAHDTGBB-UHFFFAOYSA-N dibutylcarbamothioylsulfanyl n,n-dibutylcarbamodithioate Chemical compound CCCCN(CCCC)C(=S)SSC(=S)N(CCCC)CCCC PGAXJQVAHDTGBB-UHFFFAOYSA-N 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- WJQOZHYUIDYNHM-UHFFFAOYSA-N 2-tert-Butylphenol Chemical compound CC(C)(C)C1=CC=CC=C1O WJQOZHYUIDYNHM-UHFFFAOYSA-N 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000005662 Paraffin oil Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229940116901 diethyldithiocarbamate Drugs 0.000 description 1
- LMBWSYZSUOEYSN-UHFFFAOYSA-N diethyldithiocarbamic acid Chemical compound CCN(CC)C(S)=S LMBWSYZSUOEYSN-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000035553 feeding performance Effects 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、電子写真式複写機等に用いられる給紙ロール
に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a paper feed roll used in electrophotographic copying machines and the like.
〈従来技術〉
電子写真式複写機に用いられる給紙ロールは、芯金上に
ゴム層を有する構造を備え、記録紙を感光ドラム上のト
ナー像と重なるように転写側に送出する機能を有してい
る。<Prior art> Paper feed rolls used in electrophotographic copying machines have a structure with a rubber layer on a core metal, and have the function of sending recording paper to the transfer side so that it overlaps with the toner image on the photosensitive drum. are doing.
給紙ロールのゴム層は、従来摩擦係数が高く、マーキン
グ性（ｐｐｃ用紙を汚染しない）に優れたカーボンブラ
ックを含まない／あるいは微量のカーボンブラックで灰
色に色付けした低硬度配合のポリノルボーネンゴムが採
用されてきた。The rubber layer of the paper feed roll has conventionally been made of polynorbornene rubber with a low hardness compound that has a high coefficient of friction and excellent marking properties (does not contaminate PPC paper), does not contain carbon black, or is colored gray with a trace amount of carbon black. has been adopted.
ところが、前記ゴム材料は、紫外線に対する抵抗力に劣
り、長期間使用すると摩擦係数が著しく低下し、紙送り
性能に支障を来す欠点を有していた。However, the rubber material has disadvantages in that it has poor resistance to ultraviolet rays, and its coefficient of friction decreases significantly when used for a long period of time, impeding paper feeding performance.
一方、ゴム／プラスチック用の耐候安定剤としては種々
のものがあるが、この中で給紙ロルに使用可能な非汚染
性の耐候安定剤は、前記ゴム材料に対して改善効果が期
待できなかった。On the other hand, there are various weathering stabilizers for rubber/plastics, but among these, non-staining weathering stabilizers that can be used for paper feed rolls cannot be expected to have an improvement effect on the rubber materials. Ta.
〈発明が解決しようとする課題〉
そこで本発明は、上記従来技術の問題点を解決し、耐紫
外線劣化性およびマーキング性に優れた給紙ロールを提
供することを目的とする。<Problems to be Solved by the Invention> Therefore, an object of the present invention is to solve the problems of the above-mentioned prior art and provide a paper feed roll with excellent ultraviolet deterioration resistance and marking properties.
く課題を解決するための手段〉
すなわち本発明は、芯金上にゴム層を有する給紙ロール
において、前記ゴム層はポリノルボーネンゴムを主成分
とし、ポリノルボーネンゴム１００重量部に対して平均
粒径３０μｍ以下のカーボンブラックを１０〜３０重量
部含むゴム材料で構成されていることを特徴とする給紙
ロールを提供する。Means for Solving the Problems> That is, the present invention provides a paper feed roll having a rubber layer on a core bar, wherein the rubber layer contains polynorbornene rubber as a main component, and the amount of polynorbornene rubber is 100 parts by weight. A paper feed roll is provided, characterized in that it is made of a rubber material containing 10 to 30 parts by weight of carbon black with an average particle size of 30 μm or less.
以下、本発明について詳細に説明する。The present invention will be explained in detail below.
本発明において、給紙ロールとは紙の枚葉、搬送などに
用いられるロールの総称である。In the present invention, the paper feed roll is a general term for rolls used to transport sheets of paper.
本発明は、給紙ロール上のゴム層に特徴を有し、給紙ロ
ール表層のゴム材料としては、ポリノルボーネンゴムを
主成分とする。 このゴム材料は、ポリノルボーネンゴ
ム１００重量部に対し、平均粒径３０μｍ以下のカーボ
ンブラックを１０〜３０重量部配合したものである。The present invention is characterized by a rubber layer on the paper feed roll, and the rubber material for the surface layer of the paper feed roll contains polynorbornene rubber as a main component. This rubber material contains 10 to 30 parts by weight of carbon black having an average particle size of 30 μm or less per 100 parts by weight of polynorbornene rubber.
主成分であるポリノルボーネンゴム（商品名：ノーソレ
ックス、日本ゼオン（株）製）は、エチレンとシクロペ
ンタジェンから得られるノルボーネンを開環重合して得
られる。Polynorbornene rubber (trade name: Nosolex, manufactured by Nippon Zeon Co., Ltd.), which is the main component, is obtained by ring-opening polymerization of norbornene obtained from ethylene and cyclopentadiene.
また本発明に使用するカーボンブラックは、その平均粒
子径が３０μｍ以下のものである。 ３０μｍ超では
紫外線劣化が起こりやすいため好ましくない。Further, the carbon black used in the present invention has an average particle diameter of 30 μm or less. If it exceeds 30 μm, it is not preferable because UV deterioration tends to occur.
具体的に平均粒子径が３０μｍ以下のものとしては、例
えばＳＡＦ （ダイヤブラック Ａ、平均粒子径１８μ
ｍ、三菱化成工業（株）製）、ｌ５ＡＦ（ダイヤブラッ
ク ■、平均粒子径２１μｍ、三菱化成工業（株）製）
、ＨＡＦ（ジ−スト３、平均粒子径３０μｍ、東海カー
ボン（株）製）等が挙げられる。Specifically, examples of particles with an average particle diameter of 30 μm or less include SAF (Diamond Black A, average particle diameter 18 μm).
m, manufactured by Mitsubishi Chemical Industries, Ltd.), l5AF (Diablack ■, average particle size 21 μm, manufactured by Mitsubishi Chemical Industries, Ltd.)
, HAF (Jeast 3, average particle diameter 30 μm, manufactured by Tokai Carbon Co., Ltd.).
また前記カーボンブラックは、ポリノルボーネンゴム１
００重量部に対し１０〜３０重量部配合するのがよい。Further, the carbon black is polynorbornene rubber 1
It is preferable to add 10 to 30 parts by weight per 00 parts by weight.
１０重量部未満であると耐紫外線劣化性の改良効果が
なく、また３０重量部を越えるとマーキング性が悪化し
、ＰＰＣ用紙を汚染するので好ましくない。If the amount is less than 10 parts by weight, there is no effect of improving the UV deterioration resistance, and if it exceeds 30 parts by weight, the marking properties deteriorate and the PPC paper is contaminated, which is not preferable.
またゴム材料中にはポリノルボーネンゴム以外に耐オゾ
ン性を補うためにＥＰＤＭ （エチレン−プロピレン−
ジエン）ゴム、また必要に応じてＩＲ（イソプレン）ゴ
ム、ＢＲ（ブタジェン）ゴムや５ＢＲ（スチレン−ブタ
ジェン）ゴム等を添加してもよい。In addition to polynorbornene rubber, rubber materials include EPDM (ethylene-propylene-
diene) rubber, and if necessary, IR (isoprene) rubber, BR (butadiene) rubber, 5BR (styrene-butadiene) rubber, etc. may be added.
この他の配合材としては、石油系軟化剤、可塑剤、老化
防止剤、無機充填剤、加硫剤、加硫促進剤、加硫促進助
剤等を適宜添加してもよい。As other compounding materials, petroleum softeners, plasticizers, anti-aging agents, inorganic fillers, vulcanizing agents, vulcanization accelerators, vulcanization accelerators, etc. may be added as appropriate.
石油系軟化剤としては、ナフテン系油、芳香族系油、パ
ラフィン系油等を用いることができる。As the petroleum softener, naphthenic oil, aromatic oil, paraffin oil, etc. can be used.
また可塑剤としては、アジピン酸系、フタル酸系やリン
酸系のエステル系可塑剤を用いることができ、具体的に
は、ジオクチルアジペート、ジオクチルフタレート、ト
リクレジルホスフェート等が挙げられる。Further, as the plasticizer, an adipic acid-based, phthalic acid-based, or phosphoric acid-based ester plasticizer can be used, and specific examples thereof include dioctyl adipate, dioctyl phthalate, tricresyl phosphate, and the like.
老化防止剤としては、非汚染性の老化防止剤が好ましく
、具体的には２．２′−メチレン−ビス−４−メチル−
６−ｔｅｒｔ−ブチルフェノール等が挙げられる。The anti-aging agent is preferably a non-staining anti-aging agent, specifically 2,2'-methylene-bis-4-methyl-
Examples include 6-tert-butylphenol.
無機充填剤としては、高活性シリカ、クレー、タルク等
が用いられる。Highly active silica, clay, talc, etc. are used as the inorganic filler.
加硫剤としては、粉末イオウの他に、イオウな含有する
加硫剤を適宜用いることができる。As the vulcanizing agent, in addition to powdered sulfur, a sulfur-containing vulcanizing agent can be used as appropriate.
加硫促進剤としては、汎用のものを用いることができ、
具体的には、テトラメチルチウラムジスルフィド（ＴＭ
ＴＤ）、テトラブチルチウラムジスルフィド（ＴＢＴＤ
）、テルリウムジエチルジチオカルバメイト（ＴｅＥＤ
Ｃ）、２−メルカプトベンゾチアゾール（ＭＢＴ）等が
挙げられる。As the vulcanization accelerator, general-purpose ones can be used,
Specifically, tetramethylthiuram disulfide (TM
TD), tetrabutylthiuram disulfide (TBTD)
), tellurium diethyldithiocarbamate (TeED
C), 2-mercaptobenzothiazole (MBT), and the like.
また、加硫促進助剤としては、亜鉛華やステアリン酸等
を用いることができる。Further, as the vulcanization accelerating aid, zinc white, stearic acid, etc. can be used.
これらの成分を、バンバリーミキサ−１加圧ニーダ等を
用いて混合・混練し、ゴム材料とする。 そしてこのゴ
ム材料をシート状に成形し芯金上に巻き付け、プレス加
硫し、さらに必要に応じ研ｇ機を用いて表面加工を施す
ことにより、本発明の給紙ロールを得ることができる。These components are mixed and kneaded using a Banbury Mixer 1 pressure kneader or the like to obtain a rubber material. Then, the paper feed roll of the present invention can be obtained by forming this rubber material into a sheet shape, winding it around a core metal, press-vulcanizing it, and further surface-finishing it using a grinder if necessary.
第１図に本発明の給紙ロールの縦断面図を示す。 この
給紙ロールは芯金１と芯金１上に設υられるゴム層２と
を備えている。FIG. 1 shows a longitudinal sectional view of the paper feed roll of the present invention. This paper feed roll includes a core metal 1 and a rubber layer 2 provided on the core metal 1.
本発明に用いる芯金１の材質は特に限定されず、鋼、プ
ラスチック等、汎用のものを用いればよい。The material of the core metal 1 used in the present invention is not particularly limited, and general-purpose materials such as steel and plastic may be used.
〈実施例〉
以下、本発明を実施例に基づいてさらに具体的に説明す
る。<Examples> The present invention will now be described in more detail based on Examples.
（実施例１）
ゴム層は、下記表１に示す成分組成および表２に示す種
々のカーボンブラックからなるゴム材料を用い、バンバ
リーミキサーで混練して厚さ５ｍｍのシート状に成形し
て作成した。 そしてこのゴム層を芯金上に設けてプレ
ス加硫した。 加硫後、研磨機を用いて表面仕上げし、
給紙ロールを得た。 なお、芯金は、外径が１５ｍｍ、
長さが２４ｍｍのものを用い、ゴム層の肉厚は５ｍｍで
あった。(Example 1) A rubber layer was created by using a rubber material consisting of the component composition shown in Table 1 below and various carbon blacks shown in Table 2, kneaded with a Banbury mixer, and formed into a sheet with a thickness of 5 mm. . Then, this rubber layer was provided on the core metal and press vulcanized. After vulcanization, the surface is finished using a polishing machine,
Got the paper feed roll. In addition, the outer diameter of the core metal is 15 mm,
A rubber layer having a length of 24 mm was used, and the thickness of the rubber layer was 5 mm.
この給紙ロールを用いて、紫外線劣化促進テストおよび
マーキングテストを以下の方法で行った。Using this paper feed roll, an ultraviolet deterioration acceleration test and a marking test were conducted in the following manner.
■紫外線劣化促進テスト
各試料をメタルハライドランプ（２０００Ｗ）を設けた
ボックス内に、離隔５００ｍｍで所定位置に放置し、８
ｒｐｍで回転させつつ、紫外線を照射した。 紫外線照
射時間は、未照射、４時間及び８時間とした。■ Ultraviolet ray deterioration acceleration test Each sample was left in a predetermined position at a distance of 500 mm in a box equipped with a metal halide lamp (2000 W), and
Ultraviolet rays were irradiated while rotating at rpm. The ultraviolet ray irradiation times were non-irradiated, 4 hours, and 8 hours.
耐紫外線劣化性は、紫外線照射後ヘイトン表面性測定機
（ＴＹＰＥ：ＨＥＩＤＯＮ−１４Ｄ 、新書科学（株）
製）を用いて、各試料のｒｐｃ用紙に対する静摩擦係数
を、荷重４００ｇｆ、移動速度４３ｍｍ／ｍｉｎ、室温
中の条件下で測定し評価した。Ultraviolet deterioration resistance was measured using a Hayton surface property measuring machine (TYPE: HEIDON-14D, Shinsho Kagaku Co., Ltd.) after ultraviolet irradiation.
The coefficient of static friction of each sample with respect to RPC paper was measured and evaluated under the conditions of a load of 400 gf, a moving speed of 43 mm/min, and room temperature.
静摩擦係数は、数値が小さいほど耐紫外線劣化性に劣る
ことを意味する。The smaller the static friction coefficient value, the worse the ultraviolet deterioration resistance.
■マーキングテスト
紫外線未照射の各給紙ロールにつき、中央部に３．０ｍ
ｍ幅のゴム層が残るように両側のゴム層を削除し、各試
料を作製した。■Marking test: 3.0m in the center of each paper feed roll without UV irradiation.
Each sample was prepared by removing the rubber layer on both sides so that a rubber layer with a width of m remained.
マーキング性は、ヘイトン表面性測定機（ＴＹＰＥ：１
−ＩＥＩＤＯＮ−１４Ｄ 、新書科学（株）製）を用い
て、ｐｐｃ用紙を平面上に置き、各試料を荷重１ｋｇｆ
で押しつけ摺動させ、摺動した汚れ部をコダックグレー
スケール（Ｎｏ、Ｑ−１３）の濃度と比較して一番近い
濃度で表示し評価した。 ただし、中間の濃度の時は０
．０５ｉ位で表示した。The marking property was measured using a Hayton surface property measuring machine (TYPE: 1).
-IEIDON-14D, manufactured by Shinsho Kagaku Co., Ltd.), place the ppc paper on a flat surface and apply a load of 1 kgf to each sample.
The soiled area that was rubbed was compared with the density of Kodak Gray Scale (No. Q-13) and evaluated by displaying it at the closest density. However, at intermediate concentrations, 0
．． Displayed at 05i position.
マーキング濃度は、数値が大きいほどＰＰｃ用紙を汚す
度合が大きいことを意味する。The marking density means that the larger the value, the greater the degree to which the PPc paper is stained.
評価結果を表２に示す。The evaluation results are shown in Table 2.
実施例から、本発明により得られた給紙ロールは、紫外
線照射を８時間以上行なっても、静摩擦係数は０．５以
上を常に保ち、またマーキング濃度も０，１５以下と優
れた性能を持続させることができることがわかる。From the examples, it was found that the paper feed roll obtained by the present invention maintained excellent performance with a static friction coefficient of 0.5 or more and a marking density of 0.15 or less even after being exposed to ultraviolet rays for 8 hours or more. It turns out that you can do it.
表 １
＊７
メルカプトヘンゾチアゾール
〈発明の効果〉
本発明によれば、ポリノルボーネンゴムを主成分とする
ゴム材料に特定粒子径のカーボンブラックを特定量配合
することで、特に耐紫外線劣化性およびマーキング性に
おいて優れた電子写真式複写機などの給紙ロールを得る
ことができる。Table 1 *7 Mercaptohenzothiazole <Effects of the Invention> According to the present invention, by blending a specific amount of carbon black with a specific particle size into a rubber material whose main component is polynorbornene rubber, it is possible to improve especially ultraviolet deterioration resistance and Paper feed rolls for electrophotographic copying machines and the like with excellent marking properties can be obtained.
第１図は、本発明の給紙ロールの縦断面図を示す。 符号の説明 １・・・芯金、 ２・・・ゴム層 FIG. 1 shows a longitudinal sectional view of the paper feed roll of the present invention. Explanation of symbols 1...core metal, 2...Rubber layer
Claims (1)
ノルボーネンゴム１００重量部に対して平均粒径３０μ
ｍ以下のカーボンブラックを１０〜３０重量部含むゴム
材料で構成されていることを特徴とする給紙ロール。(1) In a paper feed roll having a rubber layer on a core bar, the rubber layer is mainly composed of polynorbornene rubber, and has an average particle size of 30 μm based on 100 parts by weight of polynorbornene rubber.
A paper feed roll characterized in that it is made of a rubber material containing 10 to 30 parts by weight of carbon black of m or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19988289A JPH0367830A (en) | 1989-08-01 | 1989-08-01 | Paper feed roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19988289A JPH0367830A (en) | 1989-08-01 | 1989-08-01 | Paper feed roll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0367830A true JPH0367830A (en) | 1991-03-22 |
Family
ID=16415179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19988289A Pending JPH0367830A (en) | 1989-08-01 | 1989-08-01 | Paper feed roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0367830A (en) |
-
1989
- 1989-08-01 JP JP19988289A patent/JPH0367830A/en active Pending
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