US4349617A
Expired / Lapsed
US
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Function separated type electrophotographic light-sensitive members and process for production thereof
Assignee: Fujifilm Holdings Corp
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Filing: 1980-10-23
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Granted: 1982-09-14
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Expires: 2000-10-23
Abstract
Abstract A function separated type electrophotographic light-sensitive member and a process for production thereof are described, said member comprising an electrically conductive support, a light-sensitive layer made of a hydrogen-doped amorphous silicon semiconductor, and an organic electric charge transport layer containing at least one positive charge transport carrier selected from the group consisting of pyrazolines, aryl-alkanes, arylketones, arylamines and chalcones.
Inventors
- 👤 Kazuhiro Kawashiri
- 👤 Yuzo Mizobuchi
- 👤 Akio Higashi
- 👤 Hiroshi Tamura
- 👤 Keiji Takeda
- 👤 Masayoshi Nagata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:06
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/0436
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
50 words
A function separated type electrophotographic light-sensitive member comprising an electrically conductive support having thereon a light-sensitive layer comprising a hydrogen-doped amorphous silicon semiconductor, and an organic electric charge transport layer containing at least one positive charge transport carrier selected from the group consisting of pyrazolines, arylalkanes, arylketones, arylamines and chalcones.
Claim 2
Dependent Claim
50 words
A function separated type electrophotographic light-sensitive member comprising an electrically conductive support having thereon a light-sensitive layer comprising a hydrogen-doped amorphous silicon semiconductor, and an organic electric charge transport layer containing at least one positive charge transport carrier selected from the group consisting of pyrazolines, arylalkanes, arylketones, arylamines and chalcones.
Claim 3
Dependent Claim
25 words
A function separated type electrophotographic light-sensitive member as in claim 1 comprising, in sequence, the support, the light-sensitive layer, and the electric charge transport layer.
Claim 4
Dependent Claim
25 words
A function separated type electrophotographic light-sensitive member as in claim 1 comprising, in sequence, the support, the electric charge transport layer, and the light-sensitive layer.
Claim 5
Dependent Claim
42 words
A function separated type electrophotographic light-sensitive member as claimed in claim 1, wherein an electric charge blocking layer is provided on the hydrogen-doped amorphous silicon semiconductor layer on the side thereof which is not in contact with the electric charge transport layer.
Claim 6
Dependent Claim
29 words
A function separated type electrophotographic member as in claim 4 comprising, in sequence, the support, the electric charge blocking layer, the light-sensitive layer, and the electric charge transport layer.
Claim 7
Dependent Claim
29 words
A function separated type electrophotographic member as in claim 4 comprising, in sequence, the support, the electric charge transport layer, the light-sensitive layer, and the electric charge blocking layer.
Claim 8
Dependent Claim
27 words
A function separated type electrophotographic member as in claim 1, wherein the hydrogen-doped amorphous silicon semiconductor is a film having a thickness of from 0.005μ to 40μ.
Claim 9
Dependent Claim
28 words
A function separated type electrophotographic member as in claim 1, wherein the hydrogen-doped amorphous silicon semiconductor contains hydrogen in an amount of from 0.1 to 40 atom %.
Claim 10
Dependent Claim
35 words
A function separated type electrophotographic member as in claim 1, wherein the hydrogen-doped amorphous silicon is further doped with at least one member selected from the group consisting of oxygen, nitrogen, halogen and mixtures thereof.
Claim 11
Dependent Claim
28 words
A function separated type electrophotographic member as in claim 9, wherein the content of at least one of oxygen, nitrogen and halogen is up to 10 atom %.
Claim 12
Dependent Claim
39 words
A function separated type electrophotographic member as in claim 1, wherein the hydrogen-doped amorphous silicon semiconductor contains at least one member selected from the group consisting of N, P, As, Sb, Bi and mixtures thereof as an n-type impurity.
Claim 13
Dependent Claim
39 words
A function separated type electrophotographic member as in claim 11, wherein the hydrogen-doped amorphous silicon semiconductor contains at least one member selected from the group consisting of B, Al, Ca, In, Tl and mixtures thereof as a p-type impurity.
Claim 14
Dependent Claim
50 words
A function separated type electrophotographic member as in claim 1, 2, 3, 4, 5 or 6 wherein the organic electric charge transport layer comprises an insulating polymer and contains an organic electric charge carrier in an amount of from 0.1×10 -3 to 10×10 -3 moles per gram of the polymer.
Claim 15
Dependent Claim
25 words
A function separated type electrophotographic member as in claim 1, wherein the organic electric charge transport layer has a thickness of from 1 to 100μ.
Claim 16
Dependent Claim
75 words
A function separated type electrophotographic member as in claim 4, wherein the electric charge blocking layer comprises at least one member selected from the group consisting of SiO 2 , SiO, SiN x (x: 0.1-4), SiC x (x: 0.1-4), Al 2 O 3 , ZrO 2 , TiO 2 , MgF 2 , ZnS, a semiconductor which belongs to a different electroconductive type of said hydrogen-doped amorphous silicon semiconductor, polycarbonate, polyvinyl butyral and mixtures thereof.
Claim 17
Dependent Claim
24 words
A function separated type electrophotographic member as in claim 4, wherein the electric charge blocking layer has a thickness of from 0.005 to 5μ.
Claim 18
Dependent Claim
73 words
A process for producing a function separated type electrophotographic light-sensitive member, said process comprising providing on an electrically conductive support, a light-sensitive layer comprising a hydrogen-doped amorphous silicon semiconductor, and an organic electric charge transport layer containing at least one positive charge transport carrier selected from the group consisting of pyrazolines, arylalkanes, arylketones, arylamines and chalcones, and thereafter heat-treating the thus-produced laminated product at a temperature of from 100° C. to 200° C.
Claim 19
Dependent Claim
73 words
A process for producing a function separated type electrophotographic light-sensitive member, said process comprising providing on an electrically conductive support, a light-sensitive layer comprising a hydrogen-doped amorphous silicon semiconductor, and an organic electric charge transport layer containing at least one positive charge transport carrier selected from the group consisting of pyrazolines, arylalkanes, arylketones, arylamines and chalcones, and thereafter heat-treating the thus-produced laminated product at a temperature of from 100° C. to 200° C.
Claim 20
Dependent Claim
59 words
A process for producing a function separated type electrophotographic light-sensitive member as in claim 17, wherein the heat-treatment is carried out at from 100° C. to 200° C. for from 1 minute to 300 minutes after coating a composition for forming the electric charge transport layer on the light-sensitive layer, while simultaneously evaporating a solvent contained in the composition.
Claim 21
Dependent Claim
41 words
A process for producing a function separated type electrophotographic light-sensitive member as in claim 17, wherein the heat-treatment is carried out after coating and drying the composition for forming the electric charge transport layer for from 10 seconds to 10 hours.
Claim 22
Dependent Claim
25 words
A function separated type electrophotographic light-sensitive member as in claim 7 wherein the film thickness of the hydrogen-doped amorphous silicon semiconductor is less than 3μ.
Claim 23
Dependent Claim
29 words
A function separated type electrophotographic light-sensitive member as in claim 8 wherein the hydrogen-doped amorphous silicon semiconductor contains hydrogen in an amount of from 10 to 25 atom %.
Claim 24
Dependent Claim
42 words
A function separated type electrophotographic light-sensitive member as in claim 13 wherein the organic electric charge transport layer comprises an insulating polymer and contains an organic electric charge carrier in an amount from 0.8×10 -3 to 2×10 -3 mol/g of the polymer.
Claim 25
Dependent Claim
25 words
A function separated type electrophotographic member as in claim 14 wherein the organic electric charge transport layer has a thickness of from 5 to 20μ.
Claim 26
Dependent Claim
26 words
A function separated type electrophotographic light-sensitive member as in claim 7 wherein the film thickness of the hydrogen-doped amorphous silicon semiconductor is from 0.1 to 1μ.
Claim 27
Dependent Claim
62 words
A function separated type electrophotographic light-sensitive member as in claim 1 wherein said pyrazolines are represented by the following general formula: ##STR6## wherein A and A 1 are each aryl groups, A 2 is styryl or aryl group, said aryl groups of A, A 1 and A 2 and styryl group may be substituted with at least one of electron donating groups.
Claim 28
Dependent Claim
149 words
A function separated type electrophotographic light-sensitive member as in claim 1 wherein said arylalkanes are represented by the following general formula: ##STR7## wherein each of D and E is an aryl group, G and J are each a hydrogen atom, an alkyl group, or an aryl group, and at least one of said aryl groups contain amino substituent, said aryl group may be substituted with an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, a hydroxy group, and a halogen, said aryl groups may be joined together or cyclized to form fluorene moiety, and said amino substituent can be represented by the formula: ##STR8## wherein L may be an alkyl group having 1 to 8 carbon atoms, a hydrogen atom, an aryl group, or necessary atoms to form a heterocyclic amino group having 5 to 6 atoms in the ring.
Claim 29
Dependent Claim
80 words
A function separated type electrophotographic light-sensitive member as in claim 1 wherein said chalcones are represented by the following general formula: ##STR9## wherein R 1 and R 2 are each phenyl radicals including substituted phenyl radicals and particularly when R 1 is a phenyl radical having the formula: ##STR10## wherein R 3 and R 4 are each aryl radicals, aliphatic residues of 1 to 12 carbon atoms such as alkyl radicals preferably having 1 to 4 carbon atoms or hydrogen.
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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) | 1985-09-13 | 1986-03-15 | 1986-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-13 | 1990-03-15 | 1990-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-13 | 1994-03-15 | 1994-09-14 | $7700.00 | Window Closed / Lapsed |