JP2013015715A - 現像ローラ - Google Patents
現像ローラ Download PDFInfo
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- JP2013015715A JP2013015715A JP2011149136A JP2011149136A JP2013015715A JP 2013015715 A JP2013015715 A JP 2013015715A JP 2011149136 A JP2011149136 A JP 2011149136A JP 2011149136 A JP2011149136 A JP 2011149136A JP 2013015715 A JP2013015715 A JP 2013015715A
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Abstract
【解決手段】シャフト1と、シャフト1の外周に順次配設された弾性層2、中間塗膜層3および表層塗膜層4と、を備える現像ローラ10である。中間塗膜層3が、アゾ系金属錯体を、樹脂成分100質量部に対し0.1〜5質量部含有する。
【選択図】図1
Description
前記中間塗膜層が、アゾ系金属錯体を、樹脂成分100質量部に対し0.1〜5質量部含有することを特徴とするものである。
図1に、本発明の現像ローラの一例を示す長手方向断面図を示す。図示するように、本発明の現像ローラ10は、シャフト1と、その外周に順次配設された弾性層2、中間塗膜層3および表層塗膜層4と、を備えている。
<塗膜の作製>
無限鎖長のウレタンプレポリマー100質量部と、イソシアヌレート化HDIの15質量部と、下記表中に示す導電剤と、メチルエチルケトン(MEK)300質量部とを配合して、中間塗膜層用の塗料を調製した。これを横150×縦80mmのトレーに注いで、1日乾燥、120℃1時間にて熱硬化を行い、膜厚0.2mmのシートを作製した。この塗膜の体積抵抗率および抵抗上昇幅を測定した結果を、下記の表中に併せて示す。
抵抗変化(抵抗幅)logΩ・cm=log(Rt=600−Rt=5)
*2)オリエント化学工業(株)製, BONTRON S−44S(主成分:ソルベントバイオレット21,ビス[1−(5−クロロ−2−ヒドロキシフェニルアゾ)−2−ナフトラト)クロム(III)酸)
*3)オリエント化学工業(株)製,BONTRON S−34(主成分:ソルベントバイオレット21,ビス[1−(5−クロロ−2−ヒドロキシフェニルアゾ)−2−ナフトラト)クロム(III)酸)
*4)オリエント化学工業(株)製,SOM−1−0307(鉄錯体+アミンオニウム塩)
*5)オリエント化学工業(株)製, BONTRON P−51(ベンジルトリブチルアンモニウム−4−ヒドロキシナフタレン−1−スルフォネート)
*6)オリエント化学工業(株)製,VALIFAST BLACK 1807(C.I.Acid ブラック52)
*7)日本カーリット(株)製,PEL46
*8)自社製
図1に示すような、シャフト(金属軸)の外周に弾性層、中間塗膜層および表層塗膜層が順次担持された現像ローラを、下記に従い、作製した。
エーテル系ポリオール(旭硝子(株)製,EL430)10質量部と、エステル系ポリオール(クラレ(株)製,F510)12質量部と、整泡剤(東レダウコーニング(株)製,SF2937F)3質量部と、触媒(日東化成(株)製,U−100)0.05質量部と、KS48(花王(株)製,脂肪族第四級アンモニウムサルフェート)1質量部とを配合したポリオール成分、および、プレポリマー化TDI(旭硝子(株)製,試作品)100質量部とデンカブラック(電気化学工業(株)製)2質量部とを配合したイソシアネート成分を混合し、メカニカルフロス法で発泡させて、金属軸がセットされた金型に注入した。その後、この混合物を120℃40分にて加熱硬化させて、金属軸の外周に厚み6mmの弾性層を形成した。
得られた現像ローラの体積抵抗率および抵抗上昇幅を測定した結果を、下記の表中に併せて示す。
2 弾性層
3 中間塗膜層
4 表層塗膜層
10 現像ローラ
20 シート
21 金属板
22 抵抗測定機
23 金属製の重り
Claims (1)
- シャフトと、該シャフトの外周に順次配設された弾性層、中間塗膜層および表層塗膜層と、を備える現像ローラにおいて、
前記中間塗膜層が、アゾ系金属錯体を、樹脂成分100質量部に対し0.1〜5質量部含有することを特徴とする現像ローラ。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9098013B2 (en) | 2013-04-26 | 2015-08-04 | Ricoh Company, Ltd. | Developing roller, developing device, process cartridge, and image forming apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9098013B2 (en) | 2013-04-26 | 2015-08-04 | Ricoh Company, Ltd. | Developing roller, developing device, process cartridge, and image forming apparatus |
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