US4732834A
Expired / Lapsed
US
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Light receiving members
Assignee: Canon Inc
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Filing: 1986-10-15
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Granted: 1988-03-22
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Expires: 2006-10-15
Abstract
Abstract There is provided a light receiving member which comprises a support and a light receiving layer having a photosensitive layer composed of amorphous material containing silicon atoms and at least either germanium atoms or tin atoms and a surface layer, said surface layer being of multi-layered structure having at least an abrasion-resistant layer at the outermost side and a reflection preventive layer in the inside, and said support having a surface provided with irregularities composed of spherical dimples. The light receiving member overcomes all of the problems in the conventional light receiving member comprising a light receiving layer composed of an amorphous silicon and, in particular, effectively prevents the occurrence of interference fringe in the formed images due to the interference phenomenon thereby forming visible images of excellent quality even in the case of using coherent laser beams possible producing interference as a light source.
Inventors
- 👤 Mitsuru Honda
- 👤 Atsushi Koike
- 👤 Kyosuke Ogawa
- 👤 Keiichi Murai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:02
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/0825; G03G5/08221; G03G5/08228; G03G5/08235; G03G5/08242; G03G5/08257; G03G5/10; Y; Y10; Y10S; Y10S430/00; Y10S430/146; Y10S430/151; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
75 words
A light receiving member which comprises a support and a light receiving layer having a photosensitive layer composed of amorphous material containing silicon atoms and at least either germanium atoms or tin atoms and a surface layer, said surface layer being of multi-layered structure having at least an abrasion-resistant layer at the outermost side and a reflection preventive layer in the inside, and said support having a surface provided with irregularities composed of spherical dimples.
Claim 2
Dependent Claim
75 words
A light receiving member which comprises a support and a light receiving layer having a photosensitive layer composed of amorphous material containing silicon atoms and at least either germanium atoms or tin atoms and a surface layer, said surface layer being of multi-layered structure having at least an abrasion-resistant layer at the outermost side and a reflection preventive layer in the inside, and said support having a surface provided with irregularities composed of spherical dimples.
Claim 3
Dependent Claim
35 words
A light receiving member as defined in claim 1, wherein the surface layer is composed of amorphous material containing silicon atoms and at least one kind selected from oxygen atoms, carbon atoms and nitrogen atoms.
Claim 4
Dependent Claim
29 words
A light receiving member as defined in claim 1, wherein the surface layer is composed of at least one kind selected from inorganic fluorides, inorganic oxides and inorganic sulfides.
Claim 5
Dependent Claim
27 words
A light receiving member as defined in claim 1, wherein the photosensitive layer contains at least one kind selected from oxygen atoms, carbon atoms and nitrogen atoms.
Claim 6
Dependent Claim
20 words
A light receiving member as defined in claim 1, wherein the photosensitive layer contains a substance for controlling the conductivity.
Claim 7
Dependent Claim
17 words
A light receiving member as defined in claim 1, wherein the photosensitive layer is of multi-layered structure.
Claim 8
Dependent Claim
32 words
A light receiving member as defined in claim 4, wherein the photosensitive layer has a charge injection inhibition layer containing a substance for controlling the conductivity as one of the constituent layers.
Claim 9
Dependent Claim
23 words
A light receiving member as defined in claim 4, wherein the photosensitive layer has a barrier layer as one of the constituent layers.
Claim 10
Dependent Claim
30 words
A light receiving member as set forth in claim 1, wherein the irregularities on the surface of the support are composed of spherical dimples having the same radius of curvature.
Claim 11
Dependent Claim
34 words
A light receiving member as set forth in claim 1, wherein the irregularities on the surface of the support are composed of spherical dimples having the same radius of curvature and the same width.
Claim 12
Dependent Claim
40 words
A light receiving member as set forth in claim 1, wherein the irregularities on the surface of the support are those which are formed by letting a plurality of rigid true spheres fall spontaneously on the surface of the support.
Claim 13
Dependent Claim
47 words
A light receiving member as set forth in claim 4, wherein the irregularities on the surface of the support are those which are formed by letting rigid true spheres of almost the same diameter fall spontaneously on the surface of the support from almost the same height.
Claim 14
Dependent Claim
30 words
A light receiving member as set forth in claim 1, wherein the spherical dimples have the radius of curvature R and the width D which satisfy the following equation: 0.035≦D/R
Claim 15
Dependent Claim
21 words
A light receiving member as set forth in claim 13, wherein the spherical dimples have a width smaller than 500 μm.
Claim 16
Dependent Claim
17 words
A light receiving member as set forth in claim 1, wherein the support is a metal body.
Claim 17
Dependent Claim
21 words
A light receiving member according to claim 1, wherein the photosensitive layer contains 1 to 40 atomic % of hydrogen atoms.
Claim 18
Dependent Claim
21 words
A light receiving member according to claim 1, wherein the photosensitive layer contains 1 to 40 atomic % of halogen atoms.
Claim 19
Dependent Claim
29 words
A light receiving member according to claim 1, wherein the photosensitive layer contains both hydrogen atoms and halogen atoms in a total amount of 1 to 40 atomic %.
Claim 20
Dependent Claim
20 words
A light receiving member according to claim 1, wherein the thickness of the photosensitive layer is 1 to 100 um.
Claim 21
Dependent Claim
25 words
A light receiving member according to claim 1, wherein the photosensitive layer contains germanium atoms in a state of uneven distribution in the thickness direction.
Claim 22
Dependent Claim
25 words
A light receiving member according to claim 1, wherein the photosensitive layer contains tin atoms in a state of uneven distribution in the thickness direction.
Claim 23
Dependent Claim
39 words
A light receiving member according to claim 2, wherein the surface layer contains at least one member selected from the group consisting of oxygen atoms, carbon atoms and nitrogen atoms in an amount of 0.001 to 90 atomic %.
Claim 24
Dependent Claim
30 words
A light receiving member according to claim 5, wherein the amount of said substance in the photosensitive layer is in the range of 1×10 -3 to 1×10 3 atomic ppm.
Claim 25
Dependent Claim
44 words
A light receiving member according to claim 5, wherein said substance is present in an amount from 30 to 5×10 4 atomic ppm in a uniformly distributed state in a portion of the layer region of the photosensitive layer in contact with the support.
Claim 26
Dependent Claim
36 words
A light receiving member according to claim 8, wherein said barrier layer is composed of a material selected from the group consisting of Al 2 O 3 , SiO 2 and Si 3 N 4 .
Claim 27
Dependent Claim
21 words
A light receiving member according to claim 1, wherein the thickness of the surface layer is 3×10 -3 to 30 um.
Claim 28
Dependent Claim
21 words
A light receiving member according to claim 5, wherein said substance is an element of Group III of the Periodic Table.
Claim 29
Dependent Claim
21 words
A light receiving member according to claim 5, wherein said substance is an element of Group V of the Periodic Table.
Claim 30
Dependent Claim
31 words
An electrophotographic process comprising: (1) applying a charge to the light receiving member claim 1; and (2) applying an electromagnetic wave to said light receiving member thereby forming an electrostatic image.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |