Roll member, charging unit, process cartridge and image forming apparatus

US9102822B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9102822-B2
Application numberUS-201113232332-A
CountryUS
Kind codeB2
Filing dateSep 14, 2011
Priority dateMar 25, 2011
Publication dateAug 11, 2015
Grant dateAug 11, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

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Disclosed is a roll member including a core, and an elastic layer arranged on the core, the elastic layer containing a rubber material and polyalphaolefin.

First claim

Opening claim text (preview).

What is claimed is: 1. A roll member comprising: a core, and an elastic layer arranged on the core, the elastic layer comprising a rubber material having a halogen group and a polyalphaolefin, wherein the polyalphaolefin is a copolymer of propylene and ethylene or a polymer including butene, wherein the elastic layer further comprises calcium carbonate having a BET specific surface area of from about 11 m 2 /g to about 70 m 2 /g, in addition to carbon black, wherein the ca…

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Frequently asked questions

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What does patent US9102822B2 cover?
Disclosed is a roll member including a core, and an elastic layer arranged on the core, the elastic layer containing a rubber material and polyalphaolefin.
Who is the assignee on this patent?
Tomari Shogo, Rokutan Minoru, Fuji Xerox Co Ltd
What technology area does this patent fall under?
Primary CPC classification C08L23/10. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Aug 11 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).