US4467023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Layered photoresponsive device containing hole injecting ground electrode
Assignee: Xerox Corp
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Filing: 1983-08-15
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Granted: 1984-08-21
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Expires: 2003-08-15
Abstract
Abstract An improved layered photoresponsive imaging device consisting of (1) a supporting substrate, (2) a photogenerating layer comprised of a charge carrier photogenerating pigment dispersed in a resinous binder, (3) a hole carrier transport layer, comprised of molecules of the formula ##STR1## dispersed in a highly insulating and transparent organic resinous material, wherein an X is selected from the group consisting of (ortho) CH 3 , (meta) CH 3 , (para) CH 3 , (ortho) Cl, (meta) Cl, (para) Cl, and a hole injecting electrode strip comprised of carbon black particles and graphite particles dispersed in a resinous binder, which strip is attached to and extends the length of the non-image areas of the hole carrier transport layer.
Inventors
- 👤 Joseph Y. C. Chu
- 👤 Donald C. Von Hoene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:31
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/104; G03G5/02; G03G5/04; G03G5/043; G03G5/047; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/06144; G03G5/061443
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
117 words
An improved layered photoresponsive imaging device consisting of (1) a supporting substrate, (2) a photogenerating layer comprised of a charge carrier photogenerating pigment dispersed in a resinous binder, (3) a hole carrier transport layer, comprised of molecules of the formula: ##STR3## dispersed in a highly insulating and transparent organic resinous material, wherein an X is selected from the group consisting of (ortho) CH 3 , (meta) CH 3 , (para) CH 3 , (ortho) Cl, (meta) Cl, (para) Cl, and a hole injecting electrode strip comprised of carbon black particles and graphite particles dispersed in a resinous binder, which strip is attached to and extends the length of the non-image areas of the hole carrier transport layer.
Claim 2
Dependent Claim
117 words
An improved layered photoresponsive imaging device consisting of (1) a supporting substrate, (2) a photogenerating layer comprised of a charge carrier photogenerating pigment dispersed in a resinous binder, (3) a hole carrier transport layer, comprised of molecules of the formula: ##STR3## dispersed in a highly insulating and transparent organic resinous material, wherein an X is selected from the group consisting of (ortho) CH 3 , (meta) CH 3 , (para) CH 3 , (ortho) Cl, (meta) Cl, (para) Cl, and a hole injecting electrode strip comprised of carbon black particles and graphite particles dispersed in a resinous binder, which strip is attached to and extends the length of the non-image areas of the hole carrier transport layer.
Claim 3
Dependent Claim
35 words
An improved photoresponsive device in accordance with claim 1 wherein the conducting supporting substrate is of a thickness of from about 50 microns to about 250 microns, and is comprised of an aluminized polymeric composition.
Claim 4
Dependent Claim
43 words
An improved photoresponsive device in accordance with claim 1 wherein the charge carrier photogenerating layer is of a thickness of from about 0.1 microns to about 5 microns, and is comprised of selenium, alloys of selenium, metal phthalocyanines, metal-free phthalocyanines, or vanadyl phthalocyanines.
Claim 5
Dependent Claim
18 words
An improved photoresponsive device in accordance with claim 3, wherein the charge carrier photogenerating composition is trigonal selenium.
Claim 6
Dependent Claim
18 words
An improved photoresponsive device in accordance with claim 3 wherein the charge carrier photogenerating composition is vanadyl phthalocyanine.
Claim 7
Dependent Claim
29 words
An improved photoresponsive device in accordance with claim 1 wherein the resinous binder for the charge carrier photogenerating composition is comprised of polyesters, polycarbonates, vinyl polymers, or acrylate polymers.
Claim 8
Dependent Claim
55 words
An improved photoresponsive device in accordance with claim 6 wherein the charge carrier photogenerating pigment is present in an amount of from about 25 percent by volume to about 75 percent by volume, and the resinous binder is present in an amount of from about 75 percent by volume to about 25 percent by volume.
Claim 9
Dependent Claim
27 words
An improved photoresponsive device in accordance with claim 1 wherein the thickness of the charge carrier transport layer ranges from about 5 microns to about 50 microns.
Claim 10
Dependent Claim
37 words
An improved photoresponsive device in accordance with claim 1 wherein the charge carrier transport molecule is dispersed in a resinous binder in an amount of from about 10 percent by weight to about 75 percent by weight.
Claim 11
Dependent Claim
21 words
An improved photoresponsive device in accordance with claim 1 wherein the charge transport composition is comprised of N,N' diphenyl N,N'-bis(3-methylphenyl)-[1,1'-biphenyl]-4,4' diamine.
Claim 12
Dependent Claim
37 words
An improved photoresponsive device in accordance with claim 1 wherein the resinous binder for the hole carrier transport layer is a polycarbonate having a molecular weight of from about 20,000 to about 100,000 or a polyhydroxy ether.
Claim 13
Dependent Claim
37 words
An improved photoresponsive device in accordance with claim 10 wherein the charge carrier transport composition is present in the resinous binder in an amount of from about 10 percent by weight to about 25 percent by weight.
Claim 14
Dependent Claim
26 words
An improved photoresponsive device in accordance with claim 10 wherein the thickness of the charge transport layer is from about 5 microns to about 50 microns.
Claim 15
Dependent Claim
21 words
An improved photoresponsive device in accordance with claim 1 wherein the resinous binder for the ground strip electrode is a polyester.
Claim 16
Dependent Claim
37 words
An improved photoresponsive device in accordance with claim 14 wherein the carbon black or graphite is present in the resinous binder in an amount of from about 1 percent by weight to about 20 percent by weight.
Claim 17
Dependent Claim
26 words
An improved imaging device in accordance with claim 1 wherein the thickness of the ground strip layer is from about 1 micron to about 20 microns.
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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) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |