IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0449197
(2003-06-02)
|
우선권정보 |
JP-0162056 (2002-06-03) |
발명자
/ 주소 |
- Yamamoto, Shinya
- Kobayashi, Tetsuya
- Watanabe, Yasunari
- Aso, Yasuomi
- Koyanagi, Masato
|
출원인 / 주소 |
|
대리인 / 주소 |
Fitzpatrick, Cella, Harper &
|
인용정보 |
피인용 횟수 :
13 인용 특허 :
13 |
초록
▼
In a developing apparatus, the developing apparatus includes a developer carrying member which carries a developer and has elasticity, and a developer regulating member which regulates an amount of the developer carried on the developer carrying member, the developer regulating member having a suppo
In a developing apparatus, the developing apparatus includes a developer carrying member which carries a developer and has elasticity, and a developer regulating member which regulates an amount of the developer carried on the developer carrying member, the developer regulating member having a supported part supported by a support member and a contact part which is in contact with the developer carrying member, in which the contact part has a ten point average surface roughness of larger than 2.0 μm and a maximum height surface roughness of smaller than an average particle diameter of the developer. Therefore, an amount of the developer carried on the developer carrying member can be regulated to be uniform.
대표청구항
▼
1. A developer regulating member for regulating an amount of a developer carried on a developer carrying member, which carries the developer and has elasticity, comprising:a supported part supported by a support member; and a contact part in contact with the developer carrying member, wherein the co
1. A developer regulating member for regulating an amount of a developer carried on a developer carrying member, which carries the developer and has elasticity, comprising:a supported part supported by a support member; and a contact part in contact with the developer carrying member, wherein the contact part has a ten point average surface roughness larger than 2.0 μm and a maximum height surface roughness smaller than an average particle diameter of the developer. 2. A developer regulating member according to claim 1,wherein the developer regulating member is plate-shaped and at least the contact part thereof includes an elastic body. 3. A developer regulating member according to claim 2,wherein the elastic body contains polyamide. 4. A developer regulating member according to claim 2,wherein the elastic body is a rubber layer containing polyamide. 5. A developer regulating member according to claim 4,wherein the rubber layer contains a polyamide component and a polyether component. 6. A developer regulating member according to claim 4,wherein the rubber layer is formed by bonding polyamide and polyether through one of an ester bond and an amide bond. 7. A developer regulating member according to claim 1,wherein the contact part has a center line average surface roughness larger than 0.2 μm. 8. A developer regulating member according to claim 1,wherein the contact part has a maximum height surface roughness smaller than 7 μm. 9. A developer regulating member according to claim 1,wherein the average particle diameter of the developer is a weight average particle diameter. 10. A developer regulating member according to claim 1,wherein the developer is a nonmagnetic one-component developer. 11. A developer regulating member according to claim 10,wherein the developer has shape factors SF-1 of 100 to 180 and SF-2 of 100 to 140. 12. A developer regulating member according to claim 1,wherein the support member is a sheet metal. 13. A developer regulating member according to claim 1,wherein the developer carrying member is roller-shaped. 14. A developer regulating member according to claim 1,wherein the developer carrying member has a ten point average surface roughness larger than 5.0 μm and a maximum height surface roughness smaller than twice the average particle diameter of the developer. 15. A developer regulating member according to claim 14,wherein the developer carrying member has a center line average surface roughness larger than 0.9 μm. 16. A developer regulating member according to claim 14,wherein the developer carrying member has a maximum height surface roughness larger than 13 μm. 17. A developer regulating member according to claim 1,wherein the contact part has a ten point average surface roughness 0.3 to 0.8 times a surface roughness of the developer carrying member. 18. A developer regulating member according to claim 1,wherein an ASKER-C hardness of the developer carrying member is 35° to 70°. 19. A developer regulating member according to claim 1,wherein a linear pressure of the developer regulating member against the developer carrying member is 15 to 50 g/cm. 20. A developer regulating member according to claim 1,wherein an amount of the developer on the developer carrying member is 0.3 to 0.8 mg/cm2. 21. A developing apparatus comprising:a developer carrying member, which carries a developer and has elasticity; and a developer regulating member, which regulates an amount of the developer carried on the developer carrying member, the developer regulating member comprising a supported part supported by a support member and a contact part, which is in contact with the developer carrying member, wherein the contact part has a ten point average surface roughness larger than 2.0 μm and a maximum height surface roughness smaller than an average particle diameter of the developer. 22. A developing apparatus according to claim 21,wherein the developer regulating member is plate-shaped and at least the contact part thereof includes an elastic body. 23. A developing apparatus according to claim 22,wherein the elastic body contains polyamide. 24. A developing apparatus according to claim 22,wherein the elastic body is a rubber layer containing polyamide. 25. A developing apparatus according to claim 24,wherein the rubber layer contains polyamide and polyether. 26. A developing apparatus according to claim 24,wherein the rubber layer is formed by bonding polyamide and polyether through one of an ester bond and an amide bond. 27. A developing apparatus according to claim 21,wherein the contact part has a center line average surface roughness larger than 0.2 μm. 28. A developing apparatus according to claim 21,wherein the contact part has a maximum height surface roughness smaller than 7 μm. 29. A developing apparatus according to claim 21,wherein the average particle diameter of the developer is a weight average particle diameter. 30. A developing apparatus according to claim 21,wherein the developer is a nonmagnetic one-component developer. 31. A developing apparatus according to claim 30,wherein the developer has shape factors SF-1 of 100 to 180 and SF-2 of 100 to 140. 32. A developing apparatus according to claim 21,wherein the support member is a sheet metal. 33. A developing apparatus according to claim 21,wherein the developer carrying member is roller-shaped. 34. A developing apparatus according to claim 21,wherein the developer carrying member has a ten point average surface roughness larger than 5.0 μm and a maximum height surface roughness smaller than twice the average particle diameter of the developer. 35. A developing apparatus according to claim 34,wherein the developer carrying member has a center line average surface roughness larger than 0.9 μm. 36. A developing apparatus according to claim 34,wherein the developer carrying member has a maximum height surface roughness larger than 13 μm. 37. A developing apparatus according to claim 21,wherein the contact part has a ten point average surface roughness 0.3 to 0.8 times a surface roughness of the developer carrying member. 38. A developing apparatus according to claim 21,wherein an ASKER-C hardness of the developer carrying member is 35° to 70°. 39. A developing apparatus according to claim 21,wherein a linear pressure of the developer regulating member against the developer carrying member is 15 to 50 g/cm. 40. A developing apparatus according to claim 21,wherein an amount of the developer on the developer carrying member is 0.3 to 0.8 mg/cm2. 41. A developing apparatus according to claim 21,wherein the developing apparatus is provided in a process cartridge, which can be detachably attached to an image forming apparatus main body, together with an image bearing member.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.