IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0582280
(2009-10-20)
|
등록번호 |
US-8492059
(2013-07-23)
|
우선권정보 |
JP-2009-023982 (2009-02-04) |
발명자
/ 주소 |
- Hashiba, Shigeto
- Koseki, Kazuhiro
- Iemura, Kaori
- Ide, Kenta
- Sugiura, Satoya
- Kano, Fuyuki
- Nakamura, Kazuyuki
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
5 |
초록
▼
An electrophotographic photoreceptor, includes: a conductive support; and a photosensitive layer provided on or above the conductive support, the photosensitive layer including an outermost surface layer at the farthest location from the conductive support, wherein the outermost surface layer contai
An electrophotographic photoreceptor, includes: a conductive support; and a photosensitive layer provided on or above the conductive support, the photosensitive layer including an outermost surface layer at the farthest location from the conductive support, wherein the outermost surface layer contains: coated insulating inorganic particles obtained by subjecting insulating inorganic particles having a specific surface area of not more than about 300 m2/g to a coating treatment with an aromatic functional group-containing compound; and fluorine-containing organic particles.
대표청구항
▼
1. An electrophotographic photoreceptor, comprising: a conductive support; anda photosensitive layer provided on or above the conductive support, the photosensitive layer including an outermost surface layer at the farthest location from the conductive support, whereinthe outermost surface layer con
1. An electrophotographic photoreceptor, comprising: a conductive support; anda photosensitive layer provided on or above the conductive support, the photosensitive layer including an outermost surface layer at the farthest location from the conductive support, whereinthe outermost surface layer contains: coated insulating inorganic particles obtained by subjecting insulating inorganic particles having a specific surface area of not more than about 300 m2/g to a coating treatment with an aromatic functional group-containing compound;fluorine-containing organic particles; anda fluoroalkyl group-containing copolymer containing at least repeating units represented by Formula (I) and Formula (II): wherein each of l, v, and w represents a positive number of 1 or more;each of p, r, s, and t represents 0 or a positive number of 1 or more;q represents a positive number of 1 or more and not more than 7;each of R11, R12, R13, and R14 represents a hydrogen atom or an alkyl group;Q represents an alkylene chain, a halogen-substituted alkylene chain, —O—, —NH—, or a single bond;Y represents an alkylene chain, a halogen-substituted alkylene chain, —(CzH2z-1(OH))—, or a single bond; andz represents a positive number of 1 or more. 2. The electrophotographic photoreceptor according to claim 1, wherein the insulating inorganic particles are at least one selected from the group consisting of silicon dioxide particles, alumina particles, zirconia particles, and magnesium oxide particles. 3. The electrophotographic photoreceptor according to claim 2, wherein the insulating inorganic particles are at least one selected from the group consisting of silicon dioxide particles and alumina particles. 4. The electrophotographic photoreceptor according to claim 3, wherein the insulating inorganic particles are silicon dioxide particles. 5. The electrophotographic photoreceptor according to claim 1, wherein the insulating inorganic particles have a specific surface area of about 50 m2/g or more and not more than about 200 m2/g. 6. The electrophotographic photoreceptor according to claim 1, wherein the aromatic functional group-containing compound includes a compound represented by formula (I): (R1)k—Si—(OR2)4-k (1)wherein R1 represents a phenyl group, an ethylphenyl group, a pyridylethyl group, or a naphthyl group;R2 represents an alkyl group; andk represents an integer of 1 or more and not more than 3. 7. The electrophotographic photoreceptor according to claim 6, wherein in formula (1), R2 is a methyl group or an ethyl group, and k is 1 or 2. 8. The electrophotographic photoreceptor according to claim 1, wherein the fluorine-containing organic particles are at least one selected from the group consisting of a tetrafluoroethylene resin (PTFE), a trifluorochloroethylene resin, a hexafluoropropylene resin, a vinyl fluoride resin, a vinylidene fluoride resin, a difluorodichloroethylene resin, and particles including a copolymer thereof. 9. The electrophotographic photoreceptor according to claim 8, wherein the fluorine-containing organic particles are at least one selected from the group consisting of a tetrafluoroethylene resin (PTFE), a vinylidene fluoride resin, and particles including a copolymer thereof. 10. The electrophotographic photoreceptor according to claim 1, wherein the fluorine-containing organic particles have a particle size of a primary particle of about 0.05 μm or more and not more than about 1 μm. 11. A process cartridge, comprising: the electrophotographic photoreceptor according to claim 1;a charging unit that charges the electrophotographic photoreceptor;a developing unit that develops an electrostatic latent image formed on the electrophotographic photoreceptor with a toner to form a toner image;a cleaning unit that removes a toner remaining on a surface of the electrophotographic photoreceptor;an opening for exposure;an opening for destaticization; anda pair of installing rails. 12. An image forming apparatus, comprising: the electrophotographic photoreceptor according to claim 1;a contact charging device for charging the electrophotographic photoreceptor;a power source connected to the contact charging device;an exposing unit that exposes the charged electrophotographic photoreceptor to form an electrostatic latent image;a developing unit that develops the electrostatic latent image with a toner to form a toner image;a cleaning unit;a transfer unit that transfers the toner image onto a transfer medium from the electrophotographic photoreceptor;a fixing device having a pair or rollers; anda destaticizer. 13. The electrophotographic photoreceptor according to claim 1, wherein the weight average molecular weight of the fluoroalkyl group-containing copolymer is from 10,000 to 100,000. 14. The electrophotographic photoreceptor according to claim 1, wherein the weight average molecular weight of the fluoroalkyl group-containing copolymer is from 30,000 to 100,000.
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