GB1006115A - An improved method of producing electro-photographic records - Google Patents
An improved method of producing electro-photographic recordsInfo
- Publication number
- GB1006115A GB1006115A GB2738761A GB2738761A GB1006115A GB 1006115 A GB1006115 A GB 1006115A GB 2738761 A GB2738761 A GB 2738761A GB 2738761 A GB2738761 A GB 2738761A GB 1006115 A GB1006115 A GB 1006115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dye
- gelatin
- silver
- colloid
- pigment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G17/00—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process
- G03G17/02—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process with electrolytic development
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Colloid Chemistry (AREA)
Abstract
An organic hydrophilic colloid together with entrapped pigment, which may be a metal, dye, dye mordant or dye-forming substance is cathodically deposited from a dilute aqueous solution of the colloid and pigment, dye, dyemordant or dye-forming substance with an applied potential of typically 60 or 80 volts. The colloid may be gelatin, gum tragacanth, guar gum, gum arabic, or water-permeable starches such as amylopectin or the amylose fraction of potato starch or the hydroxyethyl derivative of such fraction which may be stabilized with formaldehyde and the associated constituents of the aqueous electrolyte may be diazo dye components which couple or dyes which change colour as the pH increases, pyridinium salts which yield coloured products at the cathode, silver salts complexed with thiourea or hypo which yield cathodic deposits of silver and silver sulphide, or cobaltous or magnesium nitrate which produce hardened deposits of lime process gelatin or gelatin containing the ammonium salt of styrene-maleamic acid copolymer respectively. Specifications 1,006,113, 1,006,114, 1,006,118 and 1,006,119 are referred to.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4595660A | 1960-07-28 | 1960-07-28 | |
| US4594460A | 1960-07-28 | 1960-07-28 | |
| US45950A US3106516A (en) | 1960-07-28 | 1960-07-28 | Photoconductography employing electrolytic images to harden or soften films |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1006115A true GB1006115A (en) | 1965-09-29 |
Family
ID=27366795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2738761A Expired GB1006115A (en) | 1960-07-28 | 1961-07-28 | An improved method of producing electro-photographic records |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1006115A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3476659A (en) * | 1965-07-21 | 1969-11-04 | Fuji Photo Film Co Ltd | Electrophotographic imaging and copying process |
| US4002475A (en) | 1975-05-05 | 1977-01-11 | Eastman Kodak Company | Photoconductive process for making electrographic masters |
-
1961
- 1961-07-28 GB GB2738761A patent/GB1006115A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3476659A (en) * | 1965-07-21 | 1969-11-04 | Fuji Photo Film Co Ltd | Electrophotographic imaging and copying process |
| US4002475A (en) | 1975-05-05 | 1977-01-11 | Eastman Kodak Company | Photoconductive process for making electrographic masters |
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