Patent US5258252A successfully refreshed from Google Patents.
US5258252A
Expired / Lapsed
US
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Image-bearing member having a surface layer of a high-melting point polyester resin and cured resin
Assignee: Canon Inc
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Filing: 1990-08-29
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Granted: 1993-11-02
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Expires: 2010-08-29
Abstract
Abstract An image-bearing member suitable for carrying an electrostatic image and/or a toner image is formed by forming a surface layer on a substrate or a photosensitive layer. The surface layer comprises a high-melting point polyester resin shows a good dispersibility of the cured resin to provide to provide a durable layer in combination with the cured resin, whereby the surface layer provides an image-bearing surface suitable for electrophotography. The surface layer may be a protective layer or a photoconductive layer when it constitutes a photosensitive member.
Inventors
- 👤 Kiyoshi Sakai
- 👤 Naoto Fujimura
- 👤 Seikoh Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:56
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0525; G03G5/0528; G03G5/0557; G03G5/056; G03G5/0592; G03G5/14; G03G5/147; G03G5/14708; G03G5/14713; G03G5/14747; G03G5/14752; G03G5/1476; G03G5/14791
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
25 words
An image-bearing member having a surface layer comprising a crystalline polyester resin having a melting point of 160° C. or higher and a cured resin.
Claim 2
Dependent Claim
25 words
An image-bearing member having a surface layer comprising a crystalline polyester resin having a melting point of 160° C. or higher and a cured resin.
Claim 3
Dependent Claim
27 words
An image-bearing member according to claim 1, wherein 3-50 wt. parts of the cured resin is contained per 100 wt. parts of the high-melting point polyester resin.
Claim 4
Dependent Claim
17 words
An image-bearing member according to claim 1, wherein said high-melting point polyester resin comprises polyethylene terephthalate resin.
Claim 5
Dependent Claim
17 words
An image-bearing member according to claim 1, wherein said high-melting point polyester resin comprises polybutylene terephthalate resin.
Claim 6
Dependent Claim
17 words
An image-bearing member according to claim 1, wherein said high-melting point polyester resin comprises polycyclohexanedimethylene terephthalate resin.
Claim 7
Dependent Claim
17 words
An image-bearing member according to claim 1, wherein said high-melting point polyester resin comprises polyethylene naphthalate resin.
Claim 8
Dependent Claim
16 words
An image-bearing member according to claim 1, wherein said cured resin comprises photoionically cured epoxy resin.
Claim 9
Dependent Claim
15 words
An image-bearing member according to claim 1, wherein said surface layer is a protective layer.
Claim 10
Dependent Claim
19 words
An image-bearing member according to claim 8, wherein said protective layer has a thickness of 3.0 microns or less.
Claim 11
Dependent Claim
18 words
An image-bearing member according to claim 8, which comprises at least the protective layer and a photoconductive layer.
Claim 12
Dependent Claim
16 words
An image-bearing member according to claim 10, wherein said photoconductive layer comprises an organic photoconductive layer.
Claim 13
Dependent Claim
29 words
An image-bearing member according to claim 11, wherein said organic photoconductive layer is in the form of a laminate comprising a charge generation layer and a charge transport layer.
Claim 14
Dependent Claim
23 words
An image-bearing member according to claim 2, which comprises the surface layer functioning as a protective layer, and also an organic photoconductive layer.
Claim 15
Dependent Claim
16 words
An image-bearing member according to claim 1, wherein said surface layer is an organic photoconductive layer.
Claim 16
Dependent Claim
17 words
An image-bearing member according to claim 14, wherein said organic photoconductive layer is a charge transport layer.
Claim 17
Dependent Claim
17 words
An image-bearing member according to claim 14, wherein said organic photoconductive layer is a charge generation layer.
Claim 18
Dependent Claim
54 words
A process for producing an image-bearing member having a surface layer comprising: forming the surface layer by applying a coating liquid comprising a crystalline polyester resin having a melting point of 160° C. or higher and a photocurable resin uniformly dissolved in a solvent to said image-bearing member and photocuring the applied coating liquid.
Claim 19
Dependent Claim
54 words
A process for producing an image-bearing member having a surface layer comprising: forming the surface layer by applying a coating liquid comprising a crystalline polyester resin having a melting point of 160° C. or higher and a photocurable resin uniformly dissolved in a solvent to said image-bearing member and photocuring the applied coating liquid.
Claim 20
Dependent Claim
13 words
A process according to claim 17, wherein said photocurable resin comprises epoxy resin.
Claim 21
Dependent Claim
22 words
A process according to claim 17, wherein said coating liquid contains a photopolymerization initiator which liberates a Lewis acid on light exposure.
Claim 22
Dependent Claim
13 words
A process according to claim 17, wherein said solvent comprises a fluorine-containing alcohol.
Claim 23
Independent Claim
69 words
An apparatus comprising: an image-bearing member having a surface layer comprising a crystalline polyester resin having a melting point of 160° C. or higher and a cured resin and at least one of a charging means, a developing means and a cleaning means integrally supported with the image-bearing member to form a single unit, which said unit can be connected to or released from an apparatus body as desired.
Claim 24
Independent Claim
69 words
An apparatus comprising: an image-bearing member having a surface layer comprising a crystalline polyester resin having a melting point of 160° C. or higher and a cured resin and at least one of a charging means, a developing means and a cleaning means integrally supported with the image-bearing member to form a single unit, which said unit can be connected to or released from an apparatus body as desired.
Claim 25
Dependent Claim
24 words
An apparatus unit according to claim 21, wherein said surface layer is a layer selected from a protective layer and an organic photoconductive layer.
Claim 26
Dependent Claim
55 words
An electrophotographic apparatus comprising: an image-bearing member having a surface layer comprising a crystalline polyester resin having a melting point of 160° C. or higher and a cured resin, a means for forming a latent image, a means for developing the latent image and a means for transferring the developed image onto a transfer-receiving member.
Claim 27
Dependent Claim
55 words
An electrophotographic apparatus comprising: an image-bearing member having a surface layer comprising a crystalline polyester resin having a melting point of 160° C. or higher and a cured resin, a means for forming a latent image, a means for developing the latent image and a means for transferring the developed image onto a transfer-receiving member.
Claim 28
Dependent Claim
75 words
A facsimile apparatus comprising: an electrophotographic apparatus and a receiving means for receiving image data from a remote terminal, wherein said electrophotographic apparatus comprises an image-bearing member having a surface layer comprising a crystalline polyester resin having a melting point of 160° C. or higher and a cured resin, a means for forming a latent image, a means for developing the latent image and a means for transferring the developed image onto a transfer-receiving member.
Claim 29
Dependent Claim
75 words
A facsimile apparatus comprising: an electrophotographic apparatus and a receiving means for receiving image data from a remote terminal, wherein said electrophotographic apparatus comprises an image-bearing member having a surface layer comprising a crystalline polyester resin having a melting point of 160° C. or higher and a cured resin, a means for forming a latent image, a means for developing the latent image and a means for transferring the developed image onto a transfer-receiving member.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-11-01 | 1997-05-03 | 1997-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-01 | 2001-05-03 | 2001-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-01 | 2005-05-03 | 2005-11-02 | $7700.00 | Window Closed / Lapsed |