US3901769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image recording member
Assignee: Canon Inc
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Filing: 1974-06-21
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Granted: 1975-08-26
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Expires: 1994-06-21
Abstract
Abstract An image recording member for facsimiles, and so on, wherein the electrically conductive agent to be used for the recording layer as the active component of the recording member comprises a porous compound containing therein a polar substance. An image is recorded on this image recording member by causing electric current to flow through the recording layer by way of a recording needle.
Inventors
- 👤 Yasushi Takatori
- 👤 Masahiro Haruta
- 👤 Akemi Shimozawa
- 👤 Katsuhiko Nishide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:46
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/20; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
54 words
IN AN ELECTRICAL RECORDING MEMBER PROVIDED WITH A RECORDING LAYER CONTAINING AN IMAGE-FORMING AGENT, AN ELECTRICALLY-CONDUCTIVE AGENT AND A BINDER THERFOR, THE IMPROVEMENT COMPRISING SAID ELECTRICALLYCONDUCTIVE AGENT COMPRISING AT LEAST A POROUS COMPOUND CONTAINING THEREIN A POLAR SUBSTANCE WHEREIN AN IMAGE IF FORMED ON SAID RECORDING LAYER BY THE APPLICATION THERETO OF ELECTRICAL CURRENT.
Claim 2
Dependent Claim
54 words
IN AN ELECTRICAL RECORDING MEMBER PROVIDED WITH A RECORDING LAYER CONTAINING AN IMAGE-FORMING AGENT, AN ELECTRICALLY-CONDUCTIVE AGENT AND A BINDER THERFOR, THE IMPROVEMENT COMPRISING SAID ELECTRICALLYCONDUCTIVE AGENT COMPRISING AT LEAST A POROUS COMPOUND CONTAINING THEREIN A POLAR SUBSTANCE WHEREIN AN IMAGE IF FORMED ON SAID RECORDING LAYER BY THE APPLICATION THERETO OF ELECTRICAL CURRENT.
Claim 3
Dependent Claim
24 words
The electrical recording member according to claim 1, wherein said recording layer is a single layer comprising said image-forming agent, electrically-conductive agent and binder.
Claim 4
Dependent Claim
28 words
The electrical recording member according to claim 1, wherein said recording layer comprises an electrically-conductive layer containing said electrically-conductive agent and an image-forming layer containing said image-forming agent.
Claim 5
Dependent Claim
21 words
The electrical recording member according to claim 1, wherein said image-forming agent comprises a porous compound containing therein a polar substance.
Claim 6
Dependent Claim
67 words
The electrical recording member according to claim 1, wherein said porous compound is at least one member selected from the group consisting of ion-exchange resins, electron-exchange resins, hydrophilic cross-linked polymers, porous polyester resins, and microporous bodies of condensed copolymer resins of dichlorodiphenylsulfone and bisphenol, and wherein said polar substance is at least one member selected from the group consisting of polar solvents, inorganic electrolytes, and organic electrolytes.
Claim 7
Dependent Claim
55 words
The electrical recording member according to claim 1, wherein said porous comppound is at least one member selected from the group consisting of silicic acid, silicates, aluminosilicates and basic aluminum magnesium carbonates, and wherein said polar substance is at least one member selected from the group consisting of polar solvents, inorganic electrolytes and organic electrolytes.
Claim 8
Dependent Claim
35 words
The electrical recording member according to claim 1, wherein the content of said electrically-conductive agent in said recording layer ranges from 30 to 90% by weight based on the total weight of said recording layer.
Claim 9
Dependent Claim
47 words
The electrical recording member according to claim 5, wherein said ion-exchange resin is a porous high polymer selected from the group consisting of polystyrene amine, phenol methylene sulfonic acid, polystyrene sulfonic acid, phenol formaldehyde polyamine, methacrylic acid and vinyl polymers containing an ion-exchangeable acid or base group.
Claim 10
Dependent Claim
30 words
The electrical recording member according to claim 5, wherein said electron-exchange resin is a porous polymer selected from the group consisting of polyvinyl hydroquinone, hydroquinone-formaldehyde resins and dioxyphenyl alanine polymers.
Claim 11
Dependent Claim
77 words
The electrical recording member according to claim 5, wherein said hydrophilic cross-linkd polymer is a porous ternary copolymer of (a) 60 to 90% by weight, based on the weight of the copolymer, of a heterocyclic-N-vinyl monomer; (b) from 40 to 10% by weight, based on the weight of the copolymer, of vinyl acetate or methyl methacrylate; and (c) from 0.5 to 12% by weight, based on the total weight of (a) and (b), of polyethylene glycol dimethacrylate.
Claim 12
Dependent Claim
102 words
The electrical recording member according to claim 5, wherein said porous polyester resin is a resin produced by a process which comprises: a. preParing an oil-in-water emulsion of a polymerizable organic liquid consisting of (1) a polyester of a polycarboxylic acid and a polyhydric alcohol and having at least one functional group of the formula -COCH CH-CO-, and (2) a low molecular weight, polymerizable monomer copolymerizable with (1) and capable of containing therein a low molecular weight, polymerizable non-liquid monomer; in the presence of at least one inorganic metal compound of low solubility in water; and b. subjecting said emulsion to block-polymerization.
Claim 13
Dependent Claim
70 words
The electrical recording member according to claim 5, wherein said microporous body is produced by a process which comprises: a. forming a flat sheet of a uniformly-mixed solution consisting essentially of a condensed copolymer resin of dichlorodiphenylsulfone and bisphenol, chloroform and an alcohol having 1 to 5 carbon atoms; and b. subjecting the resulting flat sheet to volatilization and drying at a temperature below the softening point of the resin.
Claim 14
Dependent Claim
89 words
The electrical recording member according to claim 5, wherein said polar solvent is selected from the group consisting of water, an alcohol, ammonia and dimethylformaldehyde; wherein said inorganic electrolyte is selected from the group consisting of the hydroxides, chlorides, iodides and bromides of alkali metals and alkaline earth metals; and wherein said organic electrolyte is selected from the group consisting of sulfuric acid derivatives, phosphoric acid derivatives, alkylamine salts, cyclic amine salts, amideamine salts, esteramine salts, quaternary ammonium salts and salts obtained by reacting maleic anhydride with an alkylamine.
Claim 15
Dependent Claim
18 words
The electrical recording member according to claim 6, wherein said silicate is a naturally-occurring amorphous or crystalline silicate.
Claim 16
Dependent Claim
49 words
The electrical recording member according to claim 6, wherein said aluminosilicate is represented by the formula: M 2, (M 1)2 . O . Al2O3 . mSiO2 . nH2O wherein M represents a divalent or monovalent metal ion, m is from 3 to 10 and n is a positive number.
Claim 17
Dependent Claim
17 words
The electrical recording member according to claim 14, wherein said aluminosilicate is a natural or synthetic zeolite.
Claim 18
Dependent Claim
35 words
The electrical recording member according to claim 6, wherein said basic aluminum magnesium carbonate is represented by the formula: MgxAly(OH)2x 3y 2z(CO3)z . aH2O wherein x, y and z are integers which satisfy the relationships
Claim 19
Dependent Claim
89 words
The electrical recording member according to claim 6, wherein said polar solvent is selected from the group consisting of water, an alcohol, ammonia and dimethylformaldehyde; wherein said inorganic electrolyte is selected from the group consisting of the hydroxides, chlorides, iodides and bromides of alkali metals and alkaline earth metals; and wherein said organic electrolyte is selected from the group consisting of sulfuric acid derivatives, phosphoric acid derivatives, alkylamine salts, cyclic amine salts, amideamine salts, esteramine salts, quaternary ammonium salts and salts obtained by reacting maleic anhydride with an alkylamine.
Claim 20
Dependent Claim
28 words
The electrical recording member according to claim 1, comprising said recording layer on a base composed of an electrically-conductive material or an electrically-insulating material having an electrically-conductive surface.
Claim 21
Dependent Claim
27 words
The electrical recording member of claim 1, wherein said porous compound has said polar substance impregnated therein in aN amount of from 10 to 75% by weight.
Claim 22
Dependent Claim
53 words
The electrical recording member of claim 1, wherein said image-forming agent is a material capable of forming an image in response to the application of electrical current thereto, and is selected from the group consisting of an oxidation-type color former, a reduction type color former, a pH indicator and a heat-sensitive color former.
Claim 23
Dependent Claim
25 words
The electrical recording member according to claim 1, wherein said recording layer consists essentially of an image-forming agent, said electrically-conductive agent and a binder therefor.
Claim 24
Dependent Claim
51 words
A process for recording an image on an electrical recording member which comprises applying electrical current to a recording layer thereof, thereby forming the image on the recording layer which comprises an image-forming agent, an electrically-conductive agent composed of a porous compound containing therein a polar substance and a binder therefor.
Claim 25
Dependent Claim
51 words
A process for recording an image on an electrical recording member which comprises applying electrical current to a recording layer thereof, thereby forming the image on the recording layer which comprises an image-forming agent, an electrically-conductive agent composed of a porous compound containing therein a polar substance and a binder therefor.
Claim 26
Dependent Claim
69 words
The process for recording an image according to claim 22, wherein said porous compound is at least one member selected from the group consisting of ion-exchange resins, electron-exchange resins, hydrophilic cross-linked polymers, porous polyester resins, and microporous bodies of condensed copolymer resins of dichlorodiphenylsulfone and bisphenol, and wherein said polar substance is at least one member selected from the group consisting of polar solvents, inorganic electrolytes, and organic electrolytes.
Claim 27
Dependent Claim
57 words
The process for recording an image according to claim 23, wherein said porous compound is at least one member selected from the group consisting of silicic acids, silicates, aluminosilicates, and basic aluminum magnesium carbonates, and wherein said polar substance is at least one member selected from the group consisting of polar solvents, inorganic electrolytes, and organic electrolytes.
Claim 28
Dependent Claim
23 words
The process for recording an image according to claim 23, wherein said electrical current is applied to said recording layer through a stylus.
Claim 29
Dependent Claim
35 words
The process for recording an image according to claim 23, wherein said electrical recording member comprises said recording layer on a base composed of an electrically-conductive material or an electrically-insulating material having an electrically-conductive surface.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |