US4052205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive imaging member with substituted anthracene plasticizer
Assignee: Xerox Corp
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Filing: 1975-09-24
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Granted: 1977-10-04
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Expires: 1995-09-24
Abstract
Abstract Novel photoconductive imaging members are provided comprising a layer of inorganic photoconductive material contained on a supporting substrate with a contacting layer of an electrically active organic material contiguous with the photoconductive layer comprising a plasticizer of an alkyl substituted anthracene.
Inventors
- 👤 Milan Stolka
- 👤 John F. Yanus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:00
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0605; C; C07; C07C; C07C1/00; C07C1/32; C07C1/34; C07C5/00; C07C5/02; C07C5/13; G03G5/043; G03G5/0436; G03G5/05; G03G5/0503; G03G5/051; G03G5/0517; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
97 words
An imaging member consisting essentially of a layer of photoconductive material and a contiguous layer of an electrically active organic material with the ratio of the thickness of the active layer to the photoconductive layer being maintained from about 2:1 to 200:1, said photoconductive layer exhibiting the capability of photo-excited hole generation and injection, said active organic material being capable of receiving and transporting the photo-excited holes from said photoconductive layer, wherein said active layer consists essentially of poly(N-vinylcarbazole) containing a plasticizing amount of a plasticizer selected from the group consisting of 1-isopropyl anthracene and 1,5-diisopropyl anthracene.
Claim 2
Dependent Claim
97 words
An imaging member consisting essentially of a layer of photoconductive material and a contiguous layer of an electrically active organic material with the ratio of the thickness of the active layer to the photoconductive layer being maintained from about 2:1 to 200:1, said photoconductive layer exhibiting the capability of photo-excited hole generation and injection, said active organic material being capable of receiving and transporting the photo-excited holes from said photoconductive layer, wherein said active layer consists essentially of poly(N-vinylcarbazole) containing a plasticizing amount of a plasticizer selected from the group consisting of 1-isopropyl anthracene and 1,5-diisopropyl anthracene.
Claim 3
Dependent Claim
17 words
The member of claim 1 in which the photoconductive layer comprises photoconductive particles dispersed in a binder.
Claim 4
Dependent Claim
12 words
The member of claim 1 wherein the photoconductive layer overlies a substrate.
Claim 5
Dependent Claim
11 words
The member of claim 3 wherein the substrate is electrically conductive.
Claim 6
Dependent Claim
18 words
The member of claim 3 in which the photoconductive layer is contained on a substantially transparent supporting substrate.
Claim 7
Dependent Claim
38 words
The member of claim 1 in which the photoconductive layer comprises at least one material selected from the group consisting of vitreous selenium, a selenium alloy, trigonal selenium, cadmium sulfoselenide, and a mixture of poly-N-vinyl carbazole and trinitrofluorenone.
Claim 8
Dependent Claim
13 words
The imaging member of claim 1 wherein the photoconductive material comprises amorphous selenium.
Claim 9
Dependent Claim
15 words
The member of claim 1 wherein the photoconductive layer comprises a substantially homogeneous photoconductive material.
Claim 10
Independent Claim
197 words
A method of imaging which comprises: a. providing an imaging member consisting essentially of a layer of photoconductive material and a contiguous layer of an electrically active organic material with the ratio of the thickness of the active layer to the photoconductive layer being maintained from about 2:1 to 200:1, said photoconductive layer exhibiting the capability of photo-excited hole generation and injection, said active organic material being capable of receiving and transporting the photo-excited holes from said photoconductive layer, wherein said active layer consists essentially of poly(N-vinylcarbazole) containing a plasticizing amount of a plasticizer selected from the group consisting of 1-isopropyl anthracene and 1,5-diisopropyl anthracene; b. then uniformly negatively electrostatically charging the free surface of the active layer; and c. exposing said charged layer to a source of activating radiation to which the photoconductive layer is absorbing and to which the active layer is substantially transparent and non-absorbing, the exposure being in the form of a pattern of light and shadow optically projected toward said layer, whereby photo-excited holes generated by said photoconductive layer are injected into and transported through said active layer to form a latent electrostatic image on the free surface of the active layer.
Claim 11
Independent Claim
197 words
A method of imaging which comprises: a. providing an imaging member consisting essentially of a layer of photoconductive material and a contiguous layer of an electrically active organic material with the ratio of the thickness of the active layer to the photoconductive layer being maintained from about 2:1 to 200:1, said photoconductive layer exhibiting the capability of photo-excited hole generation and injection, said active organic material being capable of receiving and transporting the photo-excited holes from said photoconductive layer, wherein said active layer consists essentially of poly(N-vinylcarbazole) containing a plasticizing amount of a plasticizer selected from the group consisting of 1-isopropyl anthracene and 1,5-diisopropyl anthracene; b. then uniformly negatively electrostatically charging the free surface of the active layer; and c. exposing said charged layer to a source of activating radiation to which the photoconductive layer is absorbing and to which the active layer is substantially transparent and non-absorbing, the exposure being in the form of a pattern of light and shadow optically projected toward said layer, whereby photo-excited holes generated by said photoconductive layer are injected into and transported through said active layer to form a latent electrostatic image on the free surface of the active layer.
Claim 12
Dependent Claim
17 words
The method of claim 9 in which the latent image is developed to form a visible image.
Claim 13
Dependent Claim
14 words
The method of claim 9 which the activating radiation is within the visible spectrum.
Claim 14
Dependent Claim
23 words
The method of claim 9 in which the source of activating radiation is in the range of about 4000 to 8000 Angstrom Units.
Claim 15
Dependent Claim
12 words
The method of claim 9 in which the substrate is electrically conductive.
Claim 16
Independent Claim
228 words
A method of imaging which comprises: a. providing an imaging member consisting essentially of a layer of photoconductive material and a contiguous layer of an electrically active organic material with the ratio of the thickness of the active layer to the photoconductive layer being maintained from about 2:1 to 200:1, said photoconductive layer exhibiting the capability of photo-excited hole generation and injection, said active organic material being capable of receiving and transporting the photo-excited holes from said photoconductive layer, wherein said active layer consists essentially of poly(N-vinylcarbazole) containing a plasticizing amount of a plasticizer selected from the group consisting of 1-isopropyl anthracene and 1,5-diisopropyl anthracene; b. then uniformly negatively electrostatically charging the free surface of the active layer; c. exposing said charged layer to a source of activating radiation to which the photoconductive layer is absorbing and to which the active layer is substantially transparent and non-absorbing the exposure being in the form of a pattern of light and shadow optically projected toward said layer, whereby photo-excited holes generated by said photoconductive layer are injected into and transported through said active layer to form a latent electrostatic image on the free surface of the active layer; d. developing the latent image to form a visible image; e. transferring the visible image to a receiving sheet, and f. repeating steps (b), (c) and (d) at least one additional time.
Claim 17
Independent Claim
228 words
A method of imaging which comprises: a. providing an imaging member consisting essentially of a layer of photoconductive material and a contiguous layer of an electrically active organic material with the ratio of the thickness of the active layer to the photoconductive layer being maintained from about 2:1 to 200:1, said photoconductive layer exhibiting the capability of photo-excited hole generation and injection, said active organic material being capable of receiving and transporting the photo-excited holes from said photoconductive layer, wherein said active layer consists essentially of poly(N-vinylcarbazole) containing a plasticizing amount of a plasticizer selected from the group consisting of 1-isopropyl anthracene and 1,5-diisopropyl anthracene; b. then uniformly negatively electrostatically charging the free surface of the active layer; c. exposing said charged layer to a source of activating radiation to which the photoconductive layer is absorbing and to which the active layer is substantially transparent and non-absorbing the exposure being in the form of a pattern of light and shadow optically projected toward said layer, whereby photo-excited holes generated by said photoconductive layer are injected into and transported through said active layer to form a latent electrostatic image on the free surface of the active layer; d. developing the latent image to form a visible image; e. transferring the visible image to a receiving sheet, and f. repeating steps (b), (c) and (d) at least one additional time.
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) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |