Charging member, process cartridge, and image forming apparatus
US-9280079-B1 · Mar 8, 2016 · US
Charging roller, process cartridge, and manufacturing method of charging roller
US9348250B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9348250-B2 |
| Application number | US-201414505921-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 3, 2014 |
| Priority date | Jun 6, 2014 |
| Publication date | May 24, 2016 |
| Grant date | May 24, 2016 |
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Abstract
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A charging roller includes a conductive base material, a conductive adhesive layer that has a gel fraction equal to or greater than 50% on an outer circumferential surface of the base material, and a conductive elastic layer on the adhesive layer.
First claim
Opening claim text (preview).
What is claimed is: 1. A charging roller comprising: a conductive base material; a conductive adhesive layer that has a gel fraction equal to or greater than 50% on an outer circumferential surface of the base material; and a conductive elastic layer on the adhesive layer, wherein a coefficient of friction of the adhesive layer is from 0.2 to 0.9. 2. The charging roller according to claim 1 , wherein a gel fraction of the adhesive layer is equal to or greater than 60%. 3. The charging roller according to claim 1 , wherein a gel fraction of the adhesive layer is equal to or greater than 90%. 4. The charging roller according to claim 1 , wherein a coefficient of friction of the adhesive layer is from 0.3 to 0.8. 5. The charging roller according to claim 1 , wherein a coefficient of friction of the adhesive layer is from 0.4 to 0.7. 6. A process cartridge detachable from an image forming apparatus, the process cartridge comprising: an image holding member; and a charging device that charges the image holding member and includes the charging roller according to claim 1 . 7. The process cartridge according to claim 6 , wherein a gel fraction of the adhesive layer is equal to or greater than 60%. 8. The process cartridge according to claim 6 , wherein a gel fraction of the adhesive layer is equal to or greater than 90%. 9. The process cartridge according to claim 6 , wherein a coefficient of friction of the adhesive layer is from 0.2 to 0.9. 10. The process cartridge according to claim 6 , wherein a coefficient of friction of the adhesive layer is from 0.3 to 0.8. 11. The process cartridge according to claim 6 , wherein a coefficient of friction of the adhesive layer is from 0.4 to 0.7. 12. A manufacturing method of a charging roller comprising: forming a conductive adhesive layer that has a gel fraction equal to or greater than 50% on an outer circumferential surface of a conductive base material; and supplying the base material having the adhesive layer formed thereon to a cross head, while inserting the base material into a supply path having a smaller inner diameter than an outer diameter of the base material including the adhesive layer, by using an extrusion molding machine, and applying a material for elastic layer formation onto the adhesive layer to form a conductive elastic layer, wherein a coefficient of friction of the adhesive layer is from 0.2 to 0.9. 13. The manufacturing method of a charging roller according to claim 12 , wherein a gel fraction of the adhesive layer is equal to or greater than 60%. 14. The manufacturing method of a charging roller according to claim 12 , wherein a gel fraction of the adhesive layer is equal to or greater than 90%. 15. The manufacturing method of a charging roller according to claim 12 , wherein a coefficient of friction of the adhesive layer is from 0.3 to 0.8. 16. The manufacturing method of a charging roller according to claim 12 , wherein a coefficient of friction of the adhesive layer is from 0.4 to 0.7.
Assignees
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Classifications
Transition metals · CPC title
Operations & Transport · mapped topic
Carbon · CPC title
Operations & Transport · mapped topic
Printing equipment or accessories therefor · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9348250B2 cover?
- A charging roller includes a conductive base material, a conductive adhesive layer that has a gel fraction equal to or greater than 50% on an outer circumferential surface of the base material, and a conductive elastic layer on the adhesive layer.
- Who is the assignee on this patent?
- Fuji Xerox Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G03G15/0233. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 24 2016 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).