GB907575A - Improvements in electrocopying apparatus - Google Patents
Improvements in electrocopying apparatusInfo
- Publication number
- GB907575A GB907575A GB30519/58A GB3051958A GB907575A GB 907575 A GB907575 A GB 907575A GB 30519/58 A GB30519/58 A GB 30519/58A GB 3051958 A GB3051958 A GB 3051958A GB 907575 A GB907575 A GB 907575A
- Authority
- GB
- United Kingdom
- Prior art keywords
- developer
- tank
- photo
- sheet
- exposure
- 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
- G03G9/00—Developers
- G03G9/06—Developers the developer being electrolytic
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S101/00—Printing
- Y10S101/29—Printing involving a color-forming phenomenon
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S101/00—Printing
- Y10S101/37—Printing employing electrostatic force
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
- Printing Plates And Materials Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Abstract
907,575. Photographic apparatus; electrolytic development. MINNESOTA MINING AND MANUFACTURING CO. Sept. 24, 1958 [Sept. 25, 1957], No. 30519/58. Classes 98 (1) and 98 (2). In apparatus for exposing a photo-conductive sheet material, the exposed image area is developed by electrolysis of a developer solution at the photo-conductive surface as the sheet is advanced to bring a fresh section into the exposure position. The sheet material preferably consists of a thin aluminium foil backed by paper and coated on the exposed side with a photo-conductive composition of zinc oxide in a styrene butadiene binder. As shown, in a micro-film reader and copier, the foil is electrically connected to spindle 31 of supply roll 29 and the circuit to batteries 38 is completed through sponge-like developer applicator pad 35, developer tank 37, switch 20, variable resistor 23 and ammeter 22. Thus, when switch 20 is closed the developer between pad 35 and the photo-conductive surface is electrolysed. Micro-film 16 is wound between spools 17 and 18 and its image is formed on ground-glass viewing screen by lens 15 and mirror 25. Exposure is effected by momentarily moving the mirror to the full-line position and returning it to the viewing position. Immediately thereafter, switch 20 is closed and the material 30 is withdrawn at a constant speed through slot 33. Contact with pad 35 is assured by spring strip 36 which light-traps slot 33. In another form (Fig. 4, not shown) the material is fed out of the slot from between a pair of developing rollers. Rollers surfaced with formaldehyde hardened gelatine plasticized with glycerol or other humectant may hold sufficient electrolyte or moisture for tank 37 to be omitted. However, when the rollers are made of such materials as compressible rubber, metal or ceramic, the lower roller dips into a tank 37. Alternatively, the developer may be brought into contact with sheet 30 by a brush arrangement (Fig. 5, not shown) dipping into the tank and the sheet advanced by sprockets engaging marginal perforations in the material. Unperforated material may be advanced by a spiked sprocket which pierces the material and, since the spikes make electrical contact with the aluminium foil, the electrical connection may be made to the spiked sprocket instead of to spindle 31. Preferably, development is carried out by electrolysis of an aqueous solution of cadmium nitrate, tartar emetic and silver nitrate. Development may be effected by electrodeposition from solutions copper or nickel ions or by chemical action which follows the deposition of a non-metallic ion. Nickel may be deposited to produce a lithographic printing plate directly. In another arrangement (Fig. 6, not shown) material which recovers its electrical resistance rapidly after exposure is immersed in a tank of developer which is electrolysed during exposure through a ring-shaped electrode.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US686237A US3011963A (en) | 1957-09-25 | 1957-09-25 | Electrolytic electrocopying apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB907575A true GB907575A (en) | 1962-10-10 |
Family
ID=24755491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30519/58A Expired GB907575A (en) | 1957-09-25 | 1958-09-24 | Improvements in electrocopying apparatus |
Country Status (7)
Country | Link |
---|---|
US (1) | US3011963A (en) |
BE (1) | BE571471A (en) |
DE (1) | DE1497004A1 (en) |
DK (1) | DK104775C (en) |
FR (1) | FR1212244A (en) |
GB (1) | GB907575A (en) |
NL (1) | NL231674A (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3102449A (en) * | 1960-06-22 | 1963-09-03 | Xerox Corp | Xerographic microfilm enlarger |
US3106156A (en) * | 1960-07-28 | 1963-10-08 | Eastman Kodak Co | Photoconductography employing molybdenum or ferrous oxide |
US3242858A (en) * | 1960-07-28 | 1966-03-29 | Eastman Kodak Co | Photoconductography employing absorbed metal ions |
US3227076A (en) * | 1960-07-28 | 1966-01-04 | Eastman Kodak Co | Photoconductography employing reducing agents |
US3106157A (en) * | 1960-07-28 | 1963-10-08 | Eastman Kodak Co | Photoconductolithography employing nickel salts |
US3213003A (en) * | 1961-08-01 | 1965-10-19 | Minnesota Mining & Mfg | Electrophotosensitive copy sheet and method of use thereof |
US3240115A (en) * | 1961-12-01 | 1966-03-15 | Itek Corp | Photographic apparatus |
US3130655A (en) * | 1963-01-21 | 1964-04-28 | Minnesota Mining & Mfg | Photographic apparatus |
US3263557A (en) * | 1963-02-26 | 1966-08-02 | Gen Electric | Document recording systems |
US3305459A (en) * | 1963-08-27 | 1967-02-21 | Minnesota Mining & Mfg | Electrolytic electrocopying method and apparatus |
US3475095A (en) * | 1966-08-08 | 1969-10-28 | Minnesota Mining & Mfg | Apparatus for producing photographic prints by heat development |
US3431051A (en) * | 1967-06-22 | 1969-03-04 | Dennison Mfg Co | Photocopier |
JPS5330332B1 (en) * | 1971-05-06 | 1978-08-26 | ||
DE2255513C2 (en) * | 1971-11-15 | 1982-04-01 | Kabushiki Kaisha Ricoh, Tokyo | Microfilm reading and re-enlarging device for originals |
JPH1148609A (en) * | 1997-08-04 | 1999-02-23 | Fuji Xerox Co Ltd | Method and device for image recording |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE151971C (en) * | ||||
US1894004A (en) * | 1930-05-12 | 1933-01-10 | Rose William Horace T Rampling | Photographic printing apparatus |
BE411766A (en) * | 1934-10-13 | |||
FR894125A (en) * | 1942-06-23 | 1944-12-14 | Zeiss Ikon Ag | Combined observation and copying device, intended in particular for x-rays |
US2540602A (en) * | 1946-07-03 | 1951-02-06 | Lockheed Aircraft Corp | Method and apparatus for the surface treatment of metals |
US2636848A (en) * | 1948-07-19 | 1953-04-28 | Rca Corp | High-speed electrolytic marking |
-
0
- NL NL231674D patent/NL231674A/xx unknown
- BE BE571471D patent/BE571471A/xx unknown
-
1957
- 1957-09-25 US US686237A patent/US3011963A/en not_active Expired - Lifetime
-
1958
- 1958-09-24 GB GB30519/58A patent/GB907575A/en not_active Expired
- 1958-09-24 FR FR1212244D patent/FR1212244A/en not_active Expired
- 1958-09-24 DK DK345558AA patent/DK104775C/en active
- 1958-09-25 DE DE19581497004 patent/DE1497004A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
NL231674A (en) | |
DK104775C (en) | 1966-06-27 |
DE1497004A1 (en) | 1972-02-03 |
BE571471A (en) | |
FR1212244A (en) | 1960-03-22 |
US3011963A (en) | 1961-12-05 |
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