US4935756A
Expired / Lapsed
US
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Electrostatic recording member
Assignee: Minolta Co Ltd
•
Filing: 1988-07-08
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Granted: 1990-06-19
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Expires: 2008-07-08
Abstract
Abstract The invention provides a new electrostatic recording member with a memorizable switching layer comprising an organic compound having a metal complex structure and/or a metal chelate structure and an electrostatic latent image forming process therewith. An electrostatic recording member of the invention can copy the same images on many sheets of paper once electrostatic latent images are formed on the electrostatic recording member.
Inventors
- 👤 Hideo Hotomi
- 👤 Shuji Iino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:17
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0662; G03G13/00; G03G13/22; G03G5/0202; G03G5/0214; G03G5/0664; G03G5/0696
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
56 words
An electrostatic recording member for retaining an electrostatic latent image comprising a memorizable switching layer formed on an electrically conductive substrate, wherein said memorizable switching layer is a plasma-polymerized layer of organic compounds with a metal complex structure and/or a metal chelate structure, and the thickness of said memorizable switching layer is 9 to 50 μm.
Claim 2
Dependent Claim
56 words
An electrostatic recording member for retaining an electrostatic latent image comprising a memorizable switching layer formed on an electrically conductive substrate, wherein said memorizable switching layer is a plasma-polymerized layer of organic compounds with a metal complex structure and/or a metal chelate structure, and the thickness of said memorizable switching layer is 9 to 50 μm.
Claim 3
Dependent Claim
23 words
An electrostatic recording member of claim 1 wherein the organic compounds with a metal complex structure and/or a metal chelate structure is copper-phthalocyanine.
Claim 4
Dependent Claim
24 words
An electrostatic recording member of claim 1, wherein the organic compounds with a metal complex structure and/or a metal chelate structure is copper (II)-acetylacetonato.
Claim 5
Dependent Claim
23 words
An electrostatic recording member of claim 1, wherein the organic compounds with a metal complex structure and/or a metal chelate structure is monochloroaluminium-monochlorophthalocyanine.
Claim 6
Dependent Claim
72 words
An electrostatic recording member for retaining an electrostatic latent image comprising a memorizable switching layer and a photoconductive layer formed on an electrically conductive substrate, wherein said memorizable switching layer is a plasma-polymerized layer of organic compounds with a metal complex structure and/or a metal chelate structure the thickness of said memorizable switching layer is a 9 to 50 μm, and the thickness of said photoconductive layer is 0.1 to 50 μm.
Claim 7
Dependent Claim
72 words
An electrostatic recording member for retaining an electrostatic latent image comprising a memorizable switching layer and a photoconductive layer formed on an electrically conductive substrate, wherein said memorizable switching layer is a plasma-polymerized layer of organic compounds with a metal complex structure and/or a metal chelate structure the thickness of said memorizable switching layer is a 9 to 50 μm, and the thickness of said photoconductive layer is 0.1 to 50 μm.
Claim 8
Dependent Claim
23 words
An electrostatic recording member of claim 5, wherein the organic compounds with a metal complex structure and/or a metal chelate structure is copper-phthalocyanine.
Claim 9
Dependent Claim
24 words
An electrostatic recording member of claim 5, wherein the organic compounds with a metal complex structure and/or a metal chelate structure is copper (II)-acetylacetonato.
Claim 10
Dependent Claim
23 words
An electrostatic recording member of claim 5, wherein the organic compounds with a metal complex structure and/or a metal chelate structure is monochloroaluminium-monochlorophthalocyanine.
Claim 11
Dependent Claim
69 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member comprising a memorizable switching layer made of plasma-polymerized organic compounds with a metal complex structure and/or a metal chelate structure on an electrically conductive substrate, by applying the voltage higher than the threshold voltage of the switching layer to the switching layer in accordance with a pattern of information.
Claim 12
Dependent Claim
69 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member comprising a memorizable switching layer made of plasma-polymerized organic compounds with a metal complex structure and/or a metal chelate structure on an electrically conductive substrate, by applying the voltage higher than the threshold voltage of the switching layer to the switching layer in accordance with a pattern of information.
Claim 13
Dependent Claim
78 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member comprising an electrically conductive substrate, a memorizable switching layer and a photoconductive layer, wherein the memorizable layer is a plasma-polymerized layer of organic compounds with a metal complex structure and/or a metal chelate structure, by applying the voltage higher than the threshold voltage of the switching layer to the switching layer in accordance with a pattern of information.
Claim 14
Dependent Claim
78 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member comprising an electrically conductive substrate, a memorizable switching layer and a photoconductive layer, wherein the memorizable layer is a plasma-polymerized layer of organic compounds with a metal complex structure and/or a metal chelate structure, by applying the voltage higher than the threshold voltage of the switching layer to the switching layer in accordance with a pattern of information.
Claim 15
Dependent Claim
89 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member having a memorizable switching layer made of plasma-polymerized organic compounds with a metal complex structure and/or a metal chelate structure on an electrically conductive substrate by charging the electrostatic recording member to the voltage lower than the threshold voltage of the switching layer and then further charging the electrostatic recording member so that the voltage higher than the threshold voltage is applied in accordance with a pattern of information.
Claim 16
Dependent Claim
89 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member having a memorizable switching layer made of plasma-polymerized organic compounds with a metal complex structure and/or a metal chelate structure on an electrically conductive substrate by charging the electrostatic recording member to the voltage lower than the threshold voltage of the switching layer and then further charging the electrostatic recording member so that the voltage higher than the threshold voltage is applied in accordance with a pattern of information.
Claim 17
Dependent Claim
102 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member having a memorizable switching layer made of plasma-polymerized organic compounds with a metal complex structure and/or a metal chelate structure on an electrically conductive substrate by charging the electrostatic recording member to the voltage higher than the threshold voltage of the switching layer and then heating the electrostatic recording member partially by a heating means in accordance with a pattern of information and then further charging the electrostatic recording member to the voltage lower than the threshold voltage of the switching layer.
Claim 18
Dependent Claim
102 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member having a memorizable switching layer made of plasma-polymerized organic compounds with a metal complex structure and/or a metal chelate structure on an electrically conductive substrate by charging the electrostatic recording member to the voltage higher than the threshold voltage of the switching layer and then heating the electrostatic recording member partially by a heating means in accordance with a pattern of information and then further charging the electrostatic recording member to the voltage lower than the threshold voltage of the switching layer.
Claim 19
Dependent Claim
90 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member having a photoconductive layer on a memorizable switching layer made of plasma-polymerized organic compounds with a metal structure and/or a metal chelate structure over an electrically conductive substrate by charging the electrostatic recording member so that the switching layer is applied to the voltage lower than the threshold voltage of the switching layer and then the electrostatic recording member is irradiated with light in accordance with a pattern of information.
Claim 20
Dependent Claim
90 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member having a photoconductive layer on a memorizable switching layer made of plasma-polymerized organic compounds with a metal structure and/or a metal chelate structure over an electrically conductive substrate by charging the electrostatic recording member so that the switching layer is applied to the voltage lower than the threshold voltage of the switching layer and then the electrostatic recording member is irradiated with light in accordance with a pattern of information.
Claim 21
Dependent Claim
88 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member having a memorizable switching layer made of plasma-polymerized organic compounds with a metal structure and/or a metal chelate structure on a photoconductive layer over an electrically conductive transparent substrate by irradiating the electrostatic recording member with light in accordance with a pattern of information from the electrically conductive transparent substrate while the switching layer is charged to the voltage higher than the threshold voltage of the switching layer.
Claim 22
Dependent Claim
88 words
An electrostatic latent image forming process, which comprises forming retentive electroconductive parts and electrically-insulative parts in an electrostatic recording member having a memorizable switching layer made of plasma-polymerized organic compounds with a metal structure and/or a metal chelate structure on a photoconductive layer over an electrically conductive transparent substrate by irradiating the electrostatic recording member with light in accordance with a pattern of information from the electrically conductive transparent substrate while the switching layer is charged to the voltage higher than the threshold voltage of the switching layer.
Claim 23
Independent Claim
112 words
A method for copying same image repeatedly once image information is memorized in an electrostatic recording member comprising a memorizable switching layer made of plasma-polymerized organic compounds with a metal complex structure and/or a metal chelate structure on an electrically conductive substrate, the method comprising following steps; (a) forming an electrostatic latent image which comprises retentive electroconductive parts and electrically-insulative parts in said electrostatic recording member; (b) developing said electrostatic latent image by developer; (c) transferring the developed image onto a transfer member; (d) removing said developer remaining on said electrostatic recording member after the transfer; and (e) repeating said steps of (b) to (d) to obtain a plurality of same image.
Claim 24
Independent Claim
112 words
A method for copying same image repeatedly once image information is memorized in an electrostatic recording member comprising a memorizable switching layer made of plasma-polymerized organic compounds with a metal complex structure and/or a metal chelate structure on an electrically conductive substrate, the method comprising following steps; (a) forming an electrostatic latent image which comprises retentive electroconductive parts and electrically-insulative parts in said electrostatic recording member; (b) developing said electrostatic latent image by developer; (c) transferring the developed image onto a transfer member; (d) removing said developer remaining on said electrostatic recording member after the transfer; and (e) repeating said steps of (b) to (d) to obtain a plurality of same image.
Claim 25
Dependent Claim
61 words
A method for copying same image repeatedly of claim 15, wherein the electrostatic latent image is formed by charging the electrostatic recording member to the voltage lower than the threshold voltage of the switching layer and then further charging the electrostatic recording member so that the voltage higher than the threshold voltage is applied in accordance with a pattern of information.
Claim 26
Dependent Claim
74 words
A method for copying same image repeatedly of claim 15, wherein the electrostatic latent image is formed by charging the electrostatic recording member to the voltage higher than the threshold voltage of the switching layer and then heating the electrostatic recording member partially by a heating means in accordance with a pattern of information and then further charging the electrostatic recording member to the voltage lower than the threshold voltage of the switching layer.
Claim 27
Independent Claim
121 words
A method for copying same image repeatedly once image information is memorized in an electrostatic recording member comprising an electrically conductive substrate, a memorizable switching layer and a photoconductive layer, wherein the memorizable layer is a plasma-polymerized layer of organic compounds with a metal complex structure and/or a metal chelate structure, the method comprising following steps; (a) forming an electrostatic latent image which comprises retentive electroconductive parts and electrically-insulative parts in said electrostatic recording member; (b) developing said electrostatic latent image by developer; (c) transferring the developed image onto a transfer member; (d) removing said developer remaining on said electrostatic recording member after the transfer; and (e) repeating said steps of (b) to (d) to obtain a plurality of same image.
Claim 28
Independent Claim
121 words
A method for copying same image repeatedly once image information is memorized in an electrostatic recording member comprising an electrically conductive substrate, a memorizable switching layer and a photoconductive layer, wherein the memorizable layer is a plasma-polymerized layer of organic compounds with a metal complex structure and/or a metal chelate structure, the method comprising following steps; (a) forming an electrostatic latent image which comprises retentive electroconductive parts and electrically-insulative parts in said electrostatic recording member; (b) developing said electrostatic latent image by developer; (c) transferring the developed image onto a transfer member; (d) removing said developer remaining on said electrostatic recording member after the transfer; and (e) repeating said steps of (b) to (d) to obtain a plurality of same image.
Claim 29
Dependent Claim
87 words
A method for copying same image repeatedly of claim 18, wherein the electrostatic latent image is formed by charging the electrostatic recording member comprising a photoconductive layer on a memorizable switching layer made of plasma-polymerized organic compounds with a metal structure and/or a metal chelate structure over an electrically conductive substrate so that the switching layer is applied to the voltage lower than the threshold voltage of the switching layer and then the electrostatic recording member is irradiated with light in accordance with a pattern of information.
Claim 30
Dependent Claim
85 words
A method for copying same image repeatedly of claim 18, wherein the electrostatic latent image is formed by irradiating the electrostatic recording member comprising a memorizable switching layer made of plasma-polymerized organic compounds with a metal structure and/or a metal chelate structure on a photoconductive layer over an electrically conductive transparent substrate with light in accordance with a pattern of information from the electrically conductive transparent substrate while the switching layer is charged to the voltage higher than the threshold voltage of the switching layer.
Claim 31
Dependent Claim
20 words
An electrostatic recording member of claim 1, wherein the thickness of said memorizable switching layer is 10 to 35 μm.
Claim 32
Dependent Claim
20 words
An electrostatic recording member of claim 5, wherein the thickness of said memorizable switching layer is 10 to 35 μm.
Claim 33
Dependent Claim
19 words
An electrostatic recording member of claim 5, wherein the thickness of said photoconductive layer is 0.2 to 30 μm.
Claim 34
Dependent Claim
16 words
An electrostatic recording member of claim 5, wherein said photoconductive layer is an amorphous silicon layer.
Claim 35
Dependent Claim
20 words
An electrostatic recording member of claim 5, wherein said photoconductive layer contains a photoconductive material dispersed in a binder resin.
Claim 36
Dependent Claim
33 words
An electrostatic recording member of claim 5, wherein the amount of said photoconductive material is 15 to 270 parts by weight on the basis of the binder resin of 100 parts by weight.
Claim 37
Dependent Claim
24 words
An electrostatic recording member of claim 5, wherein said photoconductive layer contains a photoconductive material and charge transporting material dispersed in a binder resin.
Claim 38
Dependent Claim
34 words
An electrostatic recording member of claim 27, wherein the amount of said charge transporting material is 30 to 370 parts by weight on the basis of the binder resin of 100 parts by weight.
Claim 39
Dependent Claim
15 words
An electrostatic recording member of claim 25, wherein said photoconductive material is a phthalocyanine pigment.
References Cited (Backward Citations)
US4791452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |