US4617245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light receiving member having tapered reflective surfaces between substrate and light receiving layer
Assignee: Canon Inc
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Filing: 1985-02-01
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Granted: 1986-10-14
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Expires: 2005-02-01
Abstract
Abstract A light receiving member provided with a coating layer having a light receiving layer on a substrate, where the thickness of the coating layer is regularly changed within the minute width of the coating layer.
Inventors
- 👤 Shigemori Tanaka
- 👤 Fumio Sumino
- 👤 Keiji Kubo
- 👤 Masafumi Hisamura
- 👤 Hitoshi Toma
- 👤 Naoto Fujimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:45
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
81 words
A light receiving member for image formation with incident light of wavelength λ provided with a coating layer containing a light receiving layer on a metallic cylindrical substrate, which comprises the coating layer having a regularly changed thickness within the minute width of the coating layer, said substrate having tapered reflective surfaces of a height of at least λ/2 formed vertically to the longitudinal direction of the metallic cylinder and said regularly changed thickness being formed by said tapered reflective surfaces.
Claim 2
Dependent Claim
81 words
A light receiving member for image formation with incident light of wavelength λ provided with a coating layer containing a light receiving layer on a metallic cylindrical substrate, which comprises the coating layer having a regularly changed thickness within the minute width of the coating layer, said substrate having tapered reflective surfaces of a height of at least λ/2 formed vertically to the longitudinal direction of the metallic cylinder and said regularly changed thickness being formed by said tapered reflective surfaces.
Claim 3
Dependent Claim
19 words
A light receiving member according to claim 1, wherein the tapered reflective surfaces are regularly formed at minute distances.
Claim 4
Dependent Claim
18 words
A light receiving member according to claim 1, wherein the minute width is not more than 1,000 μm.
Claim 5
Dependent Claim
16 words
A light receiving member according to claim 1, wherein the minute width is 10 μm-500 μm.
Claim 6
Dependent Claim
22 words
A light receiving member according to claim 1, wherein the tapered reflective surfaces have a height of not more than 100 μm.
Claim 7
Dependent Claim
20 words
A light receiving member according to claim 1, wherein the tapered reflective surfaces have a height of 0.3 μm-30 μm.
Claim 8
Dependent Claim
30 words
A light receiving member according to claim 1, wherein the light receiving layer is a photosensitive layer of lamination type containing a charge generation layer and a charge transport layer.
Claim 9
Dependent Claim
20 words
A light receiving member according to claim 7, wherein the charge generation layer has a thickness of 0.01 μm-1 μm.
Claim 10
Dependent Claim
20 words
A light receiving member according to claim 7, wherein the charge generation layer has a thickness of 0.05 μm-0.5 μm.
Claim 11
Dependent Claim
22 words
A light receiving member according to claim 7, wherein the charge generation layer contains an organic charge-generating material and a binder resin.
Claim 12
Dependent Claim
42 words
A light receiving member according to claim 10, wherein the organic charge-generating material is at least one member selected from the group consisting of azo pigments, quinone pigments, quinocyanin pigments, perylene pigments, bisbenzimidazole pigments, phthalocyanin pigments, quinacridone pigments, and azulenium salt compounds.
Claim 13
Dependent Claim
25 words
A light receiving member according to claim 1, wherein the light receiving layer contains inorganic photoconductive particles sensitized with a pigment and a binder resin.
Claim 14
Dependent Claim
18 words
A light receiving member according to claim 1, wherein the light receiving layer contains a charge transfer complex.
Claim 15
Dependent Claim
18 words
A light receiving member according to claim 1, wherein the light receiving layer contains a pyrylium type compound.
Claim 16
Dependent Claim
81 words
A light receiving member for image formation with incident light of wavelength λ provided with a coating layer containing a light receiving layer on a substrate, said substrate having tapered reflecting surfaces, which comprises the coating layer having a regularly changed thickness within the minute width of the coating layer, wherein an electro-conductive layer is provided between the substrate having the tapered reflective surfaces and the light receiving layer and said tapered reflective surfaces have a height of at least λ/2.
Claim 17
Dependent Claim
81 words
A light receiving member for image formation with incident light of wavelength λ provided with a coating layer containing a light receiving layer on a substrate, said substrate having tapered reflecting surfaces, which comprises the coating layer having a regularly changed thickness within the minute width of the coating layer, wherein an electro-conductive layer is provided between the substrate having the tapered reflective surfaces and the light receiving layer and said tapered reflective surfaces have a height of at least λ/2.
Claim 18
Dependent Claim
38 words
A light receiving member according to claim 15, wherein the electroconductive layer contains electroconductive powders and a binder resin and has a thickness of 1 μm-50 μm and a volume resistivity of not more than 10 13 Ωcm.
Claim 19
Dependent Claim
19 words
A light receiving member according to claim 16, wherein the electroconductive powders are metal powders or metal oxide powders.
Claim 20
Dependent Claim
19 words
A light receiving member according to claim 16, wherein the electroconductive layer contains electroconductive powders and a light-absorbing agent.
Claim 21
Dependent Claim
30 words
A light receiving member according to claim 15, wherein an electroconductive layer and a barrier layer are provided between the substrate having the tapered reflective surfaces and the light-receiving layer.
Claim 22
Dependent Claim
24 words
A light receiving member according to claim 15, wherein the substrate having the tapered reflective surfaces is a substrate with an anodically oxidized surface.
Claim 23
Dependent Claim
33 words
A light receiving member according to claim 15, wherein the tapered reflective surfaces are surfaces formed by machine cutting by a cutting tool which regularly moves along the surface of the electroconductive substrate.
Claim 24
Dependent Claim
114 words
A process for forming an image with coherent light of wavelength λ, which comprises a first step of applying an electric charge to a light receiving member having a coating layer containing a light receiving layer on a metallic cylindrical substrate, the coating layer having a regularly changed thickness within the minute width of the coating layer, said substrate having tapered reflective surfaces of a height of at least λ/2, formed vertically to the longitudinal direction of the metallic cylinder and said regularly changed thickness being formed by said tapered reflective surfaces, a second step of irradiating with the coherent light, and a third step of developing with a developing agent containing a toner.
Claim 25
Dependent Claim
114 words
A process for forming an image with coherent light of wavelength λ, which comprises a first step of applying an electric charge to a light receiving member having a coating layer containing a light receiving layer on a metallic cylindrical substrate, the coating layer having a regularly changed thickness within the minute width of the coating layer, said substrate having tapered reflective surfaces of a height of at least λ/2, formed vertically to the longitudinal direction of the metallic cylinder and said regularly changed thickness being formed by said tapered reflective surfaces, a second step of irradiating with the coherent light, and a third step of developing with a developing agent containing a toner.
Claim 26
Dependent Claim
14 words
A process according to claim 22, wherein the coherent light is a laser beam.
Claim 27
Dependent Claim
37 words
A process according to claim 23, wherein the third step is a step of developing with a developing agent containing a toner having the same polarity as that of the electric charge applied in the first step.
Claim 28
Dependent Claim
20 words
A process according to claim 23, wherein the laser beam is a laser beam generated by a semiconductor laser device.
Claim 29
Dependent Claim
30 words
A process according to claim 23, wherein the light receiving layer is irradiated with the coherent light by positive image scanning exposure corresponding to an image signal or letter signal.
Claim 30
Dependent Claim
28 words
A process according to claim 23, wherein the substrate having the tapered reflective surfaces along the direction of the minute width is covered with the light receiving layer.
Claim 31
Dependent Claim
85 words
An electrophotographic device provided with a photosensitive drum having a metallic cylinder or alloy substrate and a photosensitive layer having a regularly changed thickness within the minute width of the photosensitive layer, and a laser beam generator to generate light of a wavelength λ, which comprises the metallic cylinder or alloy substrate having tapered reflective surfaces of a height of at least λ/2 formed vertically to the longitudinal direction of the metallic cylinder and said regularly changed thickness being formed by said tapered reflective surfaces.
Claim 32
Dependent Claim
85 words
An electrophotographic device provided with a photosensitive drum having a metallic cylinder or alloy substrate and a photosensitive layer having a regularly changed thickness within the minute width of the photosensitive layer, and a laser beam generator to generate light of a wavelength λ, which comprises the metallic cylinder or alloy substrate having tapered reflective surfaces of a height of at least λ/2 formed vertically to the longitudinal direction of the metallic cylinder and said regularly changed thickness being formed by said tapered reflective surfaces.
Claim 33
Dependent Claim
18 words
An electrophotographic device according to claim 28, wherein the metallic cylinder or alloy substrate is an aluminum cylinder.
Claim 34
Dependent Claim
18 words
An electrophotographic device according to claim 28, wherein the laser beam generator is a semi-conductor laser beam generator.
Claim 35
Dependent Claim
24 words
An electrophotographic device according to claim 28, wherein an electroconductive layer is provided between the metallic cylinder or alloy substrate and the photosensitive layer.
Claim 36
Dependent Claim
34 words
An electrophotographic device according to claim 28, wherein an electroconductive layer is provided between the metallic cylinder or alloy substrate and the photosensitive layer, and a barrier layer is provided on the electroconductive layer.
Claim 37
Dependent Claim
28 words
An electrophotographic device according to claim 28, wherein the photosensitive layer is a photosensitive layer of lamination type containing a charge generation layer and a charge transport layer.
Claim 38
Dependent Claim
17 words
An electrophotographic device according to claim 28, wherein the minute width is not more than 1,000 μm.
Claim 39
Dependent Claim
15 words
An electrophotographic device according to claim 28, wherein the minute width is 10 μm-500 μm.
Claim 40
Dependent Claim
21 words
An electrophotographic device according to claim 28, wherein the tapered reflective surfaces have a height of not more than 100 μm.
Claim 41
Dependent Claim
19 words
An electrophotographic device according to claim 28, wherein the tapered reflective surfaces have a height of 0.3 μm-30 μm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |