US3839028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging process
Assignee: Fujifilm Holdings Corp
•
Filing: 1971-12-30
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Granted: 1974-10-01
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Expires: 1991-12-30
Abstract
Abstract WHEREIN Z,Z'' : non-metallic atoms constituting heterocyclic structure, X : anion, and Y : atom belonging to the group 6B of the periodic table, FROM OR TO THE SYSTEM THEREBY OBTAINING AN IMAGE CONTAINING WATER-INSOLUBLE MACROMOLECULAR SUBSTANCE. An imaging process which comprises selectively eliminating or adding imagewise at least a component of a system consisting of a hydrophilic macromolecular substance, a metal ion, a compound capable of maintaining the pH value of the surrounding medium at not less than 8 when brought into contact with water or a substance which provides such a compound when decomposed and a compound represented by the following general formula:
Inventors
- 👤 E Hasegawa
- 👤 T Miyazako
- 👤 N Tsuji
- 👤 T Shishido
- 👤 S Honjo
- 👤 R Ohi
- 👤 Y Tamai
- 👤 M Takimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:32
CPC Classifications
C; C07; C07D; C07D513/00; C07D513/02; C07D513/04; B; B41; B41M; B41M5/00; B41M5/20; B41M5/26; B41M5/36; B41M5/368; G; G03; G03C; G03C1/00; G03C1/675; G03F; G03F7/00; G03F7/004; G03F7/038; G03G; G03G13/00; G03G13/26; G03G17/00; G03G17/02
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
93 words
A PROCESS FOR FORMING AN IMAGE IN A SYSTEM INCLUDING A RECORDING LAYER, SAID PROCESS COMPRISING IMAGEWISE FORMING FIRST AND SECOND PORTIONS IN SAID SYSTEM BY FORMING A WATER INSOLUBLE FIRST PORTION IN OR ON SAID RECORDING LAYER BY REACTING A HYDROPHILIC MACROMOLECULAR SUBSTANCE (A) CONTAINING PRIMARY AMINO RADICALS, A METAL ION (B) SELECTED FROM THE GROUP CONSISTING OF IONS OF METALLIC ATOMS BELONGING TO GROUPS 6A, 7A, 8, IB, AND 2B OF THE PERIODIC TABLE OF THE IUPAC COMPTES RONDUS XXIII CONFERENCE, 1965, A COMPOUND (D) REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
93 words
A PROCESS FOR FORMING AN IMAGE IN A SYSTEM INCLUDING A RECORDING LAYER, SAID PROCESS COMPRISING IMAGEWISE FORMING FIRST AND SECOND PORTIONS IN SAID SYSTEM BY FORMING A WATER INSOLUBLE FIRST PORTION IN OR ON SAID RECORDING LAYER BY REACTING A HYDROPHILIC MACROMOLECULAR SUBSTANCE (A) CONTAINING PRIMARY AMINO RADICALS, A METAL ION (B) SELECTED FROM THE GROUP CONSISTING OF IONS OF METALLIC ATOMS BELONGING TO GROUPS 6A, 7A, 8, IB, AND 2B OF THE PERIODIC TABLE OF THE IUPAC COMPTES RONDUS XXIII CONFERENCE, 1965, A COMPOUND (D) REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 3
Dependent Claim
114 words
An imaging process as in claim 1 where said recording layeR comprises a photoconductive insulating layer, said process including developing an electrostatic latent image formed on said photoconductive insulating layer with a finely powdered material consisting of at least one member selected from the group consisting of said hydrophilic macromolecular substance (A), said metal ion (B), said compound (D) and a compound (C) capable of maintaining the pH value of the surrounding medium at not less than 8 when brought into contact with water or a compound (C'') which provides a compound (C) when decomposed and reacting the thus obtained powder image with the remaining members of said group to obtain a final image.
Claim 4
Dependent Claim
96 words
A process as in claim 1 where said recording layer contains all said substance (A), ion (B), compound (D) and a compound (C''), which after decomposure, is capable of maintaining the pH value of the surrounding medium at not less than 8 when brought into contact with water, said compound (C'') maintaining the surrounding medium at a pH value not less than 8 when decomposed by electron beams, and selectively imagewise irradiating said recording layer with an electron beam to decompose said compound (C'') and water insolubilize said recording layer at the electron beam exposed portions.
Claim 5
Dependent Claim
53 words
An imaging process as claim 1 where said first portion of the system is maintained at said pH value by introducing into the system a compound (C), which is capable of maintaining the surrounding medium at said pH value when brought into contact with water, and bringing said system into contact with water.
Claim 6
Dependent Claim
33 words
An imaging process as in claim 4 where said compound (C) is selected from the group consisting of oxides, hydroxides, carbonates of alkali metals and alkali earth metals and water soluble, organic bases.
Claim 7
Dependent Claim
22 words
An imaging process as in claim 1 where said pH value is maintained by applying to said recording layer an alkali solution.
Claim 8
Dependent Claim
32 words
An imaging process as in claim 6 where at least one of said substance (A), said ion (B) or said compound (D) is only imagewise present in or on said recording layer.
Claim 9
Dependent Claim
18 words
An imaging process as in claim 6 where an alkali solution is applied imagewise to said recording layer.
Claim 10
Dependent Claim
61 words
An imaging process as in claim 1 where said first portion of the system is maintained at said pH value by introducing into the system a substance (C'') which provides by decomposition a compound, which is capable of maintaining the surrounding medium at said pH value when brought into contact with water, decomposing said substance, and contacting the system with water.
Claim 11
Dependent Claim
14 words
An imaging process as in claim 9 where said substance (C'') is decomposed thermally.
Claim 12
Dependent Claim
23 words
An imaging process as in claim 10 where said substance (C'') is at least one member chosen from urea, thiourea, and ammonium carbonate.
Claim 13
Dependent Claim
16 words
An imaging process as in claim 10 where said substance (C'') is decomposed by electric current.
Claim 14
Dependent Claim
16 words
An imaging process as in claim 10 where said substance (C'') is decomposed by laser beam.
Claim 15
Dependent Claim
16 words
An imaging process as in claim 10 where said substance (C'') is decomposed by electron beam.
Claim 16
Dependent Claim
31 words
An imaging process as in claim 1 where said metal ion is selected from the group consisting of chromium, manganese, iron, cobalt, nickel, copper, zinc, palladium, silver, cadmium, mercury and gold.
Claim 17
Dependent Claim
26 words
An imaging process as in claim 15 where said metal ion is selected from the group consisting of maganese, cobalt, nickel, copper, zinc, silver and cadmium.
Claim 18
Dependent Claim
152 words
An imaging process as in claim 1 where said recording layer is a photosensitive element, said process including the steps of projecting a light image onto said photosensitive element comprising an electroconductive support and a photoconductive layer provided thereon and selectively passing an electric current through the exposed areas of said photoconductive layer in an aqueous solution optionally containing at least one component of said substance (A), ion (B), aNd compound (D) at a point no earlier than simultaneously with said exposure, the remaining components (if any) of said system being present in at least one outer layer provided on said photoconductive layer, the medium adjacent the surface of the light exposed areas of said photoconductive layer being maintained at a pH value not less than 8 by said electric current to thereby enable the components of said system to react and form a water insoluble image at the light exposed areas.
Claim 19
Dependent Claim
38 words
An imaging process as in claim 17 where said hydrophilic macromolecular substance (A) and said compound (D) are present in outer layers provided on said photoconductive layer, and said metal ion (B) is dissolved in said aqueous solution.
Claim 20
Dependent Claim
27 words
An imaging process as in claim 17 where said hydrophilic macromolecular substance (A), and metal ion (B), and said compound (D) are present in said aqueous solution.
Claim 21
Dependent Claim
49 words
An imaging process as in claim 17 where said electroconductive support layer is disposed on a further support layer, said process comprising the further steps of selectively removing said photoconductive layer and electroconductive support at the image area to expose said electroconductive support layer on said further support layer.
Claim 22
Dependent Claim
157 words
A process as in claim 1 where said recording layer contains at least said hydrophilic macromolecular substance (A), said metal ion (B), said compound (D), and a compound (C''), which after decomposure, is capable of maintaining the pH value of the surrounding medium at not less than 8 when brought into contact with water, said compound (C'') maintaining the surrounding medium at a pH value not less than 8 when decomposed by an electric current, said recording layer being disposed on an electroconductive support layer, and scanning said recording layer with means for applying an electric current thereto, said scanning means optionally containing said metal ion (B), said electric current being modulated in accordance with the image to be formed on said recording layer so that wherever an image portion is to be formed, the intensity of the electric current is sufficient to decompose said compound (C'') and thereby water insolubilize that portion of the recording layer.
Claim 23
Dependent Claim
17 words
A process as in claim 21 where said metal ion (B) is present in said recording layer.
Claim 24
Dependent Claim
108 words
A process as in claim 1 where said recording layer contains all said substance (A), ion (B), compound (D) and a compound (C''), which after decomposure, is capable of maintaining the pH value of the surrounding medium at not less than 8 when brought into contact with water, said compound (C'') maintaining the surrounding medium at a pH value not less than 8 when decomposed by heat, forming a heat image at said recording layer to thereby enable said component (A), (B), (C''), and (D) to react where the image portions of said heat image are present to thereby water insolubilize the recording layer at said image portions.
Claim 25
Dependent Claim
89 words
A process as in claim 23 including providing said recording layer with an additional component which raises the temperature of said surrounding medium when it absorbs light, said heat image forming step including scanning said recording layer with a modulated laser beam, the beam being so modulated that when an image portion is to be formed in said recording layer, the intensity of the beam is made sufficient to elevate the temperature so that said component (C'') decomposes to thereby water insolubilize said recording layer at said image portion.
References Cited (Backward Citations)
US3332857A
Cited
US3632484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |