GB1043981A - Electrophotographic processes - Google Patents
Electrophotographic processesInfo
- Publication number
- GB1043981A GB1043981A GB17562/63A GB1756263A GB1043981A GB 1043981 A GB1043981 A GB 1043981A GB 17562/63 A GB17562/63 A GB 17562/63A GB 1756263 A GB1756263 A GB 1756263A GB 1043981 A GB1043981 A GB 1043981A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- coating
- photoconductive
- plate
- pattern
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/80—Television signal recording using electrostatic recording
- H04N5/82—Television signal recording using electrostatic recording using deformable thermoplastic recording medium
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G16/00—Electrographic processes using deformation of thermoplastic layers; Apparatus therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/022—Layers for surface-deformation imaging, e.g. frost imaging
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
1,043,981. Electrophotographic processes. RANK XEROX Ltd. May 3, 1963 [May 8,1962(3)], No. 17562/63. Heading G2H. An electrophotographic process utilizes a layer which is deformable by electrostatic force in the pattern of the image to be reproduced. In one embodiment, a xerographic plate 30, Fig. 1, has a support member 31 and a photoconductive coating 32. The member 31 is preferably electrically conductive, e.g. of brass, aluminium, metallized paper, or conductively coated glass. The plate 30 is electrostatically charged by movement relative to corona charging device 33 and then exposed to a light pattern, e.g. by a photographic enlarger 35, Fig. 2 (not shown). The coating 32, Fig. 1, is then softened, e.g. by a heating element 36, Fig. 3 (not shown) to enable it to flow in response to the electrostatic forces to correspond with the light pattern. The coating 32 is then rehardened e.g. by removing the source of heat or by solvent vapour. The resulting pattern may be viewed by reflected or transmitted light. The plate 30 may be re-used by again softening coating 32 to erase the image. In a modification, a xerographic plate comprises a conductive layer 37 Fig. 5 (not shown) coated with a photoconductive insulating layer 38 over which is an interlayer 39 coated with thermoplastic. Layer 37 may be brass, aluminium, conductive paper or plastic conductively coated with tin oxide, copper iodide or similarly coated glass. The photoconductive layer 38 may be anthracene, sulphur or zinc oxide. Interlayer 39 may be polyvinyl chloride, polyvinyl acetate or polyethylene terephthalate. The layer 40 is of material sufficiently insulating to support an electrostatic charge and capable of maintaining such a charge while softened by heat or vapour to permit deformation by such electrostatic charge. The layer 40 may be "Staybelite" "Piciolastic" or Nievillac. The layer 40 is charged by corona discharge 42 and then layer 39 is exposed by projection of an image 45 through an optical system 47 above Fig. 7 (not shown) or below Fig. 6 (not shown) the plate. If desired, the charging step may be repeated, after exposure, Fig. 8 (not shown) such that the charge density is increased only in the illuminated areas. The plate may be simultaneously exposed and charged Fig. 9 (not shown). The plate can be placed in a chamber 52 Fig. 10 (not shown) containing solvent vapour e.g. ethylene dichloride, carbon tetrachloride, hexane or trichloroethylene. Alternatively, the thermoplastic layer may be softened by a heat source e.g. an infra-red lamp 53 Fig. 11 (not shown) or resistance element 54 Fig. 12 (not shown). The The layer 40 may be softened during exposure Fig. 13 (not shown). In another embodiment a deformable coloured coating 59, Fig. 14, and a transparent layer are applied by dip coating and a viewable image is produced by depression of the coating 59. In this case, heating elements 60 are associated with charging device 42, and a light pattern is projected by optical system 47 onto photoconductive layer 38. The coloured coating may be dispensed with by wiping a pigmented material over the surface of the deformed plastic material, e.g. printers ink or a graphite emulsion. A photoconductive web 62, Fig. 15 (not shown), on a conductive backing is carried by rotatable cylinders 63. A thermoplastic layer 72 is coated on a heat resistant support 73. The layer 72 is fed past an erasing station 64 into contact with photoconductive web 62, the adjacent surface of the web 62 being precharged at electrostatic charging station 65. An exposure station 67 projects a pattern of light on to the web 62 while a second charging station 68 increases the variations in charge density of the photoconductive layer. A heat or vapour development station 69 produces a deformation image pattern in the thermoplastic layer 73. A bath 77 applies a liquid film, e.g. silicone oil to the web 62.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US193245A US3238041A (en) | 1962-05-08 | 1962-05-08 | Relief imaging of photoresponsive member and product |
US193276A US3615388A (en) | 1962-05-08 | 1962-05-08 | Deformation imaging process and element |
US193246A US3196009A (en) | 1962-05-08 | 1962-05-08 | Electrostatic image liquid deformation development |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1043981A true GB1043981A (en) | 1966-09-28 |
Family
ID=27393168
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17411/66A Expired GB1043983A (en) | 1962-05-08 | 1963-05-03 | Xerographic reproduction |
GB17410/66A Expired GB1043982A (en) | 1962-05-08 | 1963-05-03 | A method of electrophotographic image reproduction |
GB17562/63A Expired GB1043981A (en) | 1962-05-08 | 1963-05-03 | Electrophotographic processes |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17411/66A Expired GB1043983A (en) | 1962-05-08 | 1963-05-03 | Xerographic reproduction |
GB17410/66A Expired GB1043982A (en) | 1962-05-08 | 1963-05-03 | A method of electrophotographic image reproduction |
Country Status (10)
Country | Link |
---|---|
US (1) | US3615388A (en) |
BE (1) | BE631984A (en) |
CA (1) | CA942826A (en) |
CH (1) | CH448745A (en) |
DK (1) | DK129676B (en) |
GB (3) | GB1043983A (en) |
LU (1) | LU43704A1 (en) |
NL (1) | NL292402A (en) |
NO (1) | NO123260B (en) |
SE (1) | SE315502B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2262917C3 (en) * | 1972-12-22 | 1979-02-01 | Hoechst Ag, 6000 Frankfurt | Electrophotographic recording material for the production of deformation images |
JPS51109838A (en) * | 1975-03-20 | 1976-09-29 | Canon Kk | Denshishashinkankotai |
US4190445A (en) * | 1975-03-20 | 1980-02-26 | Canon Kabushiki Kaisha | Electrophotographic photosensitive media and process for manufacturing thereof |
US4131462A (en) * | 1976-02-17 | 1978-12-26 | Honeywell Inc. | Element for thermoplastic recording |
JPH0354975A (en) * | 1989-03-30 | 1991-03-08 | Victor Co Of Japan Ltd | Electrostatic latent image recording element/ reproducing element |
-
0
- NL NL292402D patent/NL292402A/xx unknown
-
1962
- 1962-05-08 US US193276A patent/US3615388A/en not_active Expired - Lifetime
-
1963
- 1963-05-03 GB GB17411/66A patent/GB1043983A/en not_active Expired
- 1963-05-03 GB GB17410/66A patent/GB1043982A/en not_active Expired
- 1963-05-03 SE SE4915/63A patent/SE315502B/xx unknown
- 1963-05-03 GB GB17562/63A patent/GB1043981A/en not_active Expired
- 1963-05-04 NO NO148554A patent/NO123260B/no unknown
- 1963-05-06 CA CA874,855A patent/CA942826A/en not_active Expired
- 1963-05-07 BE BE631984A patent/BE631984A/fr unknown
- 1963-05-07 CH CH573963A patent/CH448745A/en unknown
- 1963-05-07 DK DK216063AA patent/DK129676B/en unknown
- 1963-05-08 LU LU43704D patent/LU43704A1/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CH448745A (en) | 1967-12-15 |
DK129676B (en) | 1974-11-04 |
SE315502B (en) | 1969-09-29 |
US3615388A (en) | 1971-10-26 |
GB1043982A (en) | 1966-09-28 |
DK129676C (en) | 1975-05-12 |
NL292402A (en) | 1900-01-01 |
LU43704A1 (en) | 1963-07-08 |
CA942826A (en) | 1974-02-26 |
NO123260B (en) | 1971-10-18 |
BE631984A (en) | 1963-05-31 |
GB1043983A (en) | 1966-09-28 |
DE1497058B2 (en) | 1972-10-19 |
DE1497058A1 (en) | 1969-02-20 |
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