US4906544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive member of plasma polymerized amorphous carbon charge transporting layer and charge generating layer
Assignee: Minolta Co Ltd
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Filing: 1989-08-18
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Granted: 1990-03-06
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Expires: 2009-08-18
Abstract
Abstract The practice of this invention provides a photosensitive member which comprises a charge generating layer, and a plasma-polymerized layer, wherein said plasma-polymerized layer having an infrared absorption spectrum of a ratio of coefficients of absorptivities attributed to methyl group (--CH 3 ) to those of methylene group (--CH 2 --), and is a coefficient of absorptivity attributed to methylene group (--CH 2 --) at about 2925 cm -1 . The photosensitive member obtained thereby is excellent in charge-transporting property and chargeability and, moreover, exhibits advantages in corona resistance and resistances to acids, moisture and heat and also in physical properties such as stiffness.
Inventors
- 👤 Izumi Osawa
- 👤 Shuji Iino
- 👤 Hideo Hotomi
- 👤 Mitsutoshi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:53
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/043; G03G5/047
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
133 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer for retaining and transporting charges, said charge transporting layer having a thickness of from about 5 to about 50 microns and comprising a plasma-polymerized layer of an amorphous material formed by organic plasma polymerization and comprising hydrogen and carbon, wherein the infrared absorption spectrum of said plasma-polymerized layer has a ratio (α 1 /α 2 ) of from 0.5 to 5.0, wherein α 1 1 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) and/or methylene group (--CH 2 --) at least 1460 cm -1 and about 1470 cm -1 and α 2 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) at about 1380 cm -1 .
Claim 2
Dependent Claim
133 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer for retaining and transporting charges, said charge transporting layer having a thickness of from about 5 to about 50 microns and comprising a plasma-polymerized layer of an amorphous material formed by organic plasma polymerization and comprising hydrogen and carbon, wherein the infrared absorption spectrum of said plasma-polymerized layer has a ratio (α 1 /α 2 ) of from 0.5 to 5.0, wherein α 1 1 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) and/or methylene group (--CH 2 --) at least 1460 cm -1 and about 1470 cm -1 and α 2 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) at about 1380 cm -1 .
Claim 3
Dependent Claim
21 words
A photosensitive member as claimed in claim 1 wherein the ratio of α 1 /α 2 is preferably 0.9 to 2.5.
Claim 4
Dependent Claim
118 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a plasma-polymerized layer of an amorphous material comprising hydrogen and carbon, being formed by organic plasma polymerization and having a thickness of from about 5 to about 50 microns, wherein the infrared absorption spectrum of said plasma-polymerized layer has a ratio (α 1 /α 2 ) of from 0.5 to 5.0, wherein α 1 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) and/or methylene group (--CH 2 --) at about 1460 cm -1 and about 1470 cm -1 and α 2 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) at about 1380 cm -1 .
Claim 5
Dependent Claim
118 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a plasma-polymerized layer of an amorphous material comprising hydrogen and carbon, being formed by organic plasma polymerization and having a thickness of from about 5 to about 50 microns, wherein the infrared absorption spectrum of said plasma-polymerized layer has a ratio (α 1 /α 2 ) of from 0.5 to 5.0, wherein α 1 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) and/or methylene group (--CH 2 --) at about 1460 cm -1 and about 1470 cm -1 and α 2 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) at about 1380 cm -1 .
Claim 6
Dependent Claim
21 words
A photosensitive member as claimed in claim 3 wherein the ratio of α 1 /α 2 is preferably 0.9 to 2.5.
Claim 7
Dependent Claim
18 words
A photosensitive member as claimed in claim 3 wherein said plasma-polymerized layer functions to retain and transport charges.
Claim 8
Dependent Claim
122 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer for retaining and transporting charges, said charge transporting layer having a thickness of from about 5 to about 50 microns and comprising a plasma-polymerized layer of an amorphous material formed by organic plasma polymerization and comprising hydrogen and carbon, wherein the infrared absorption spectrum of said plasma-polymerized layer has a ratio (α 3 /α 4 ) of from 0.5 to 1.5, wherein α 3 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) at about 2960 cm -1 , and α 4 is a coefficient of peak absorptivity attributed to methylene group (--CH 2 --) at about 2925 cm -1 .
Claim 9
Dependent Claim
122 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a charge transporting layer for retaining and transporting charges, said charge transporting layer having a thickness of from about 5 to about 50 microns and comprising a plasma-polymerized layer of an amorphous material formed by organic plasma polymerization and comprising hydrogen and carbon, wherein the infrared absorption spectrum of said plasma-polymerized layer has a ratio (α 3 /α 4 ) of from 0.5 to 1.5, wherein α 3 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) at about 2960 cm -1 , and α 4 is a coefficient of peak absorptivity attributed to methylene group (--CH 2 --) at about 2925 cm -1 .
Claim 10
Dependent Claim
21 words
A photosensitive member as claimed in claim 6 wherein the ratio of α 3 /α 4 is preferably 0.8 to 1.2.
Claim 11
Dependent Claim
31 words
A photosensitive member as claimed in claim 6 wherein said carbon atoms preferably constitute methyl group in a ratio of 28 to 52% based on the amount of all carbon atoms.
Claim 12
Dependent Claim
114 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a plasma-polymerized layer of an amorphous material comprising hydrogen and carbon and having a thickness of from about 5 to about 50 microns, said plasma-polymerized layer of an amorphous material being formed by organic plasma polymerization, wherein the infrared absorption spectrum of said plasma-polymerized layer has a ratio (α 3 /α 4 ) of from 0.5 to 1.5, wherein α 3 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) at about cm -1 , and α 4 is a coefficient of peak absorptivity attributed to methylene group (--CH 2 ) at about 2925 cm -1 .
Claim 13
Dependent Claim
114 words
A photosensitive member comprising: an electrically conductive substrate; a charge generating layer; and a plasma-polymerized layer of an amorphous material comprising hydrogen and carbon and having a thickness of from about 5 to about 50 microns, said plasma-polymerized layer of an amorphous material being formed by organic plasma polymerization, wherein the infrared absorption spectrum of said plasma-polymerized layer has a ratio (α 3 /α 4 ) of from 0.5 to 1.5, wherein α 3 is a coefficient of peak absorptivity attributed to methyl group (--CH 3 ) at about cm -1 , and α 4 is a coefficient of peak absorptivity attributed to methylene group (--CH 2 ) at about 2925 cm -1 .
Claim 14
Dependent Claim
21 words
A photosensitive member as claimed in claim 9 wherein the ratio of α 3 /α 4 is preferably 0.8 to 1.2.
Claim 15
Dependent Claim
18 words
A photosensitive member as claimed in claim 9 wherein said plasma-polymerized layer functions to retain and transport charges.
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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) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
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| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |