US3926629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic method and plate employing a phthaldcyanine polymer
Assignee: Xerox Corp
•
Filing: 1973-12-17
•
Granted: 1975-12-16
•
Expires: 1993-12-17
Abstract
Abstract A xerographic plate including a photoconductive insulating layer made from a polymer containing phthalocyanine is disclosed. A method of forming a latent electrostatic image on said plate is also disclosed.
Inventors
- 👤 John W Weigl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:27
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/071
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
48 words
A method of forming a latent electrostatic image comprising charging a photoconductive insulating layer said layer comprising a polymer in which at least about 2% by weight of its recurring molecular units include a phthalocyanine molecule and exposing said charged layer to a pattern of actinic electromagnetic radiation.
Claim 2
Independent Claim
48 words
A method of forming a latent electrostatic image comprising charging a photoconductive insulating layer said layer comprising a polymer in which at least about 2% by weight of its recurring molecular units include a phthalocyanine molecule and exposing said charged layer to a pattern of actinic electromagnetic radiation.
Claim 3
Dependent Claim
21 words
The method as defined in claim 1 further comprising developing said latent electrostatic image with a finely divided electroscopic marking material.
Claim 4
Independent Claim
50 words
A method of forming a latent electrostatic image comprising charging a photoconductive insulating layer said layer comprising a polymer in which at least about 2% by weight of its monomeric precursor comprises phthalocyanine with an ethylenically unsaturated substituent and exposing said charged layer to a pattern of actinic electromagnetic radiation.
Claim 5
Independent Claim
50 words
A method of forming a latent electrostatic image comprising charging a photoconductive insulating layer said layer comprising a polymer in which at least about 2% by weight of its monomeric precursor comprises phthalocyanine with an ethylenically unsaturated substituent and exposing said charged layer to a pattern of actinic electromagnetic radiation.
Claim 6
Independent Claim
47 words
A method of forming a latent electrostatic image comprising charging a photoconductive insulating layer said layer comprising a polymer condensed from at least about 2% by weight of phthalocyanine which is at least difunctionally substituted and exposing said charged layer to a pattern of actinic electromagnetic radiation.
Claim 7
Independent Claim
47 words
A method of forming a latent electrostatic image comprising charging a photoconductive insulating layer said layer comprising a polymer condensed from at least about 2% by weight of phthalocyanine which is at least difunctionally substituted and exposing said charged layer to a pattern of actinic electromagnetic radiation.
Claim 8
Independent Claim
81 words
A method of forming a latent electrostatic image comprising charging a photoconductive insulating layer comprising a polymer in which at least about 2% by weight of the recurring molecular units of said polymer include the phthalocyanine molecule and and in which said phthalocyanine containing units are arranged together in groups of at least two so as to form a block copolymer with a second and distinct recurring molecular unit and exposing said charged layer to a pattern of actinic electromagnetic radiation.
Claim 9
Independent Claim
81 words
A method of forming a latent electrostatic image comprising charging a photoconductive insulating layer comprising a polymer in which at least about 2% by weight of the recurring molecular units of said polymer include the phthalocyanine molecule and and in which said phthalocyanine containing units are arranged together in groups of at least two so as to form a block copolymer with a second and distinct recurring molecular unit and exposing said charged layer to a pattern of actinic electromagnetic radiation.
Claim 10
Independent Claim
59 words
A method of forming a latent electrostatic image comprising charging a photoconductive insulting layer said layer comprising a polymer in which at least about 2% by weight of said polymer comprises groups which are pendant from a main polymer chain, said pendant groups including the phthalocyanine molecule and exposing said charged layer to a pattern of actinic electromagnetic radiation.
Claim 11
Independent Claim
59 words
A method of forming a latent electrostatic image comprising charging a photoconductive insulting layer said layer comprising a polymer in which at least about 2% by weight of said polymer comprises groups which are pendant from a main polymer chain, said pendant groups including the phthalocyanine molecule and exposing said charged layer to a pattern of actinic electromagnetic radiation.
Claim 12
Independent Claim
108 words
A method of photoelectrophoretic imaging comprising subjecting a layer of a suspension to an applied electric field between a pair of electrodes, at least one of said electrodes being at least partly transparent, said suspension comprising a plurality of finely divided polymeric particles in which at least about 2% by weight of the recurring molecular units include a phthalocyanine molecule, said particles being suspended in an insulating carrier liquid and simultaneously exposing said suspension to an image through said transparent electrode with a source of activating electromagnetic radiation whereby a pigment image made up of migrated particles is formed on one of said electrodes and separating said electrodes.
Claim 13
Independent Claim
108 words
A method of photoelectrophoretic imaging comprising subjecting a layer of a suspension to an applied electric field between a pair of electrodes, at least one of said electrodes being at least partly transparent, said suspension comprising a plurality of finely divided polymeric particles in which at least about 2% by weight of the recurring molecular units include a phthalocyanine molecule, said particles being suspended in an insulating carrier liquid and simultaneously exposing said suspension to an image through said transparent electrode with a source of activating electromagnetic radiation whereby a pigment image made up of migrated particles is formed on one of said electrodes and separating said electrodes.
Claim 14
Independent Claim
105 words
A method of imaging comprising uniformly charging the surface of an imaging layer said imaging layer comprising a layer of photoconductive insulating particles on a soluble, electrically insulating resin surface over a conductive base layer, said photoconductive insulating parTicles comprising a polymer in which at least about 2% by weight of its recurring molecular units include a phthalocyanine molecule, exposing the photoconductive insulating particles of said imaging member to a pattern of actinic electromagnetic radiation corresponding to an image to be reproduced and contacting said imaging member with a solvent for said resin whereby particles selectively migrate to the underlying substrate to produce an image.
Claim 15
Independent Claim
105 words
A method of imaging comprising uniformly charging the surface of an imaging layer said imaging layer comprising a layer of photoconductive insulating particles on a soluble, electrically insulating resin surface over a conductive base layer, said photoconductive insulating parTicles comprising a polymer in which at least about 2% by weight of its recurring molecular units include a phthalocyanine molecule, exposing the photoconductive insulating particles of said imaging member to a pattern of actinic electromagnetic radiation corresponding to an image to be reproduced and contacting said imaging member with a solvent for said resin whereby particles selectively migrate to the underlying substrate to produce an image.
Claim 16
Dependent Claim
63 words
A XEROGRAPHIC PLATE COMPRISING AN ELECTROPHOTOGRAPHIC FILM OF A POLYMER IN WHICH AT LEAST ONE OF THE REDUCING MOLECULAR UNITS INCLUDES THE PHTHALOCYANINE MOLECULE, SAID POLYMER COMPRISING AT LEAST ONE RECURRING MOLECULAR UNIT IN ADDITON TO THE UNIT INCLUDING PHTHALOCYANINE, SAID ADDITIONAL UNIT BEING CHARACTERIZED IN THAT IT IMPARTS FLEXIBILITY AND TOUGHNESS TO THE INTERPOLYMER WHICH IT FORMS WITH SAID PHTHALOCYANINE INCLUDING UNITS.
Claim 17
Dependent Claim
63 words
A XEROGRAPHIC PLATE COMPRISING AN ELECTROPHOTOGRAPHIC FILM OF A POLYMER IN WHICH AT LEAST ONE OF THE REDUCING MOLECULAR UNITS INCLUDES THE PHTHALOCYANINE MOLECULE, SAID POLYMER COMPRISING AT LEAST ONE RECURRING MOLECULAR UNIT IN ADDITON TO THE UNIT INCLUDING PHTHALOCYANINE, SAID ADDITIONAL UNIT BEING CHARACTERIZED IN THAT IT IMPARTS FLEXIBILITY AND TOUGHNESS TO THE INTERPOLYMER WHICH IT FORMS WITH SAID PHTHALOCYANINE INCLUDING UNITS.
Claim 18
Dependent Claim
30 words
The xerographic plate as defined in claim 9 wherein said film is deposited in the thickness up to 80 microns to a tolerance plus or minus 25% of nominal thickness.
Claim 19
Dependent Claim
66 words
A xerographic plate comprising an electrophotographic film comprising one member selected from the group consisting of phthalocyanine copolymers and terpolymers, in which at least about 2% by weight of the recurring molecular units of said copolymers and terpolymer include a phthalocyanine molecule, said film having a thickness of up to 80 microns uniformly deposited to a tolerance of + or - 25 percent of nominal thickness.
Claim 20
Dependent Claim
66 words
A xerographic plate comprising an electrophotographic film comprising one member selected from the group consisting of phthalocyanine copolymers and terpolymers, in which at least about 2% by weight of the recurring molecular units of said copolymers and terpolymer include a phthalocyanine molecule, said film having a thickness of up to 80 microns uniformly deposited to a tolerance of + or - 25 percent of nominal thickness.
Claim 21
Dependent Claim
37 words
The xerographic plate as defined in claim 11 wherein said film is coated on electrically conductive substrate to a thickness of up to 80 microns to a tolerance of + or - 25 percent of nominal thickness.
References Cited (Backward Citations)
US3308444A
Cited
US3816118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |