GB1235758A - Improvements in or relating to an electrophotographic process and apparatus therefor - Google Patents
Improvements in or relating to an electrophotographic process and apparatus thereforInfo
- Publication number
- GB1235758A GB1235758A GB49789/68A GB4978968A GB1235758A GB 1235758 A GB1235758 A GB 1235758A GB 49789/68 A GB49789/68 A GB 49789/68A GB 4978968 A GB4978968 A GB 4978968A GB 1235758 A GB1235758 A GB 1235758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- record
- electrode
- latent image
- mesh
- 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
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/18—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a charge pattern
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Photoreceptors In Electrophotography (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
Abstract
1,235,758. Electro-photographic processes. KONISHIROKU PHOTO INDUSTRY CO. Ltd. Oct. 21, 1968 [Oct. 25, 1967; June 26, 1968; July 3, 1968; July 24, 1968], No.49789/68. Heading G2H. An electro-photographic plate 1 has an conductive substrate 2, a radiation sensitive layer 3 evaporated or coated on the substrate 2, and an insulating layer 4 having a mesh pattern with spaces for the migration of electrostatic charges between layers as shown in Fig. 3 or in the form of a half tone, or cross line screen pattern. The thickness of the insulating layer is within the range of 0À5 to 100 microns preferably from 5 to 20 microns. The layer may be formed by applying a photomersiable material to the layer 3 and after drying is exposed to U.V. through a mask of the desired pattern, the non-exposed parts are removed by a developer comprising trichloroethylene. Alternatively, the pattern may be formed electrophotographically. Suitable materials for insulating layer are polyethylene, polystyrene, polyester, polyaminide, Teflon (T.M.) vinyl chloride, vinyl acetate, phenol resin and co-polymers thereof. If desired an inter layer may be provided between the radiation sensitive layer and insulating layer. The insulating mesh layer may be formed on a final record member Figs. 9a-9c (not shown) or on an intermediate record layer Figs. 14a to 14d (not shown) in a similar manner to the formation on a radiation sensitive member. Alternatively, the mesh layer may be formed by printing using a transparent resin solution or by using a thermoplastic resin pressed against a heated matrix on a metal roller having the desired pattern. In use, a record member 5, Fig. 4, having an insulating layer 6 and a conductive base 7 is positioned on a counter-electrode 8 in contact with mesh layer 4, pressure of the order of 0À1 to 1 kg/cm<SP>2</SP> being appliedbetweenthe substrate 2 and electrode 8. Electrodes 2<SP>1</SP> and 8 are connected to a D.C. source 9 of the order of -1120 volts. The assembly is imagewise exposed to radiation 12, such that free charge carriers, electrons or positive holes, move to the surface of layer 3 under the influence of the applied field and to the layer 6. Switch 10 is opened and switch 11 closed and the member 5 is separated to permit development and fixing of the latent image on the layer 6. In another embodiment, Fig. 5 (not shown) the layer 3 is exposed through a transparent record member and electrode. The plate 1 Fig. 6C (not shown) previously formed with an electrostatic latent image in known manner is placed in contact with a record member 5 and a roller electrode 8 is moved from left to right while applying positive potential to substrate 2. The latent image is thus transferred from the plate 1 to the record member 5. A copying machine, Fig. 8, has a radiation sensitive member 25 reciprocated in the direction of the arrows past a slit in a shield 24 to expose the member to a transparent orignal 21. A continuous record web 26 is moved past a conductive rubber roller electrode 27 to the right with the member 25 to receive a latent image. The roller electrode 27 is carried by a movable support 30 which is raised to cause the roller to urge the member 26 into contact with a mesh layer on the member 25. Copying machines using an intermediate record layer, Figs. 14a to 14d (not shown) are described with reference to Figs. 17 to 21 (not shown).
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6841367 | 1967-10-25 | ||
JP4386668A JPS4821055B1 (en) | 1968-06-26 | 1968-06-26 | |
JP4587568A JPS4843825B1 (en) | 1968-07-03 | 1968-07-03 | |
JP5182168A JPS4821052B1 (en) | 1968-07-24 | 1968-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1235758A true GB1235758A (en) | 1971-06-16 |
Family
ID=27461433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB49789/68A Expired GB1235758A (en) | 1967-10-25 | 1968-10-21 | Improvements in or relating to an electrophotographic process and apparatus therefor |
Country Status (3)
Country | Link |
---|---|
US (1) | US3653890A (en) |
DE (1) | DE1804982C3 (en) |
GB (1) | GB1235758A (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3744897A (en) * | 1969-05-02 | 1973-07-10 | Xerox Corp | Transparent electrode for electrophoretic imaging |
US3806238A (en) * | 1969-12-31 | 1974-04-23 | Xerox Corp | Forms overlay technique using tesi |
US4053863A (en) * | 1971-06-03 | 1977-10-11 | Varian Associates, Inc. | Electrophotographic photoconductive plate and the method of making same |
US3930156A (en) * | 1972-06-19 | 1975-12-30 | Diagnostic Instr Inc | Cassette unit |
US3892964A (en) * | 1973-06-01 | 1975-07-01 | Xonics Inc | Insulating electrode for breakdown inhibition in electronradiography imaging chamber |
US3891990A (en) * | 1973-06-27 | 1975-06-24 | Xerox Corp | Imaging process using donor material |
US3932750A (en) * | 1974-01-02 | 1976-01-13 | Siemens Aktiengesellschaft | Ray converter |
US4053309A (en) * | 1974-06-10 | 1977-10-11 | Varian Associates, Inc. | Electrophotographic imaging method |
DE2442808A1 (en) * | 1974-09-06 | 1976-03-18 | Siemens Ag | DEVICE FOR RECORDING AND REPRODUCING X-RAY IMAGES |
CA1071466A (en) * | 1976-07-21 | 1980-02-12 | Research Laboratories Of Australia Pty. Limited | Method of and means for the production of lithographic printing plates |
US4245555A (en) * | 1978-09-11 | 1981-01-20 | Research Laboratories Of Australia Pty Limited | Electrostatic transfer process for producing lithographic printing plates |
US4263359A (en) * | 1979-04-05 | 1981-04-21 | E. I. Du Pont De Nemours And Company | Charge receptor film for charge transfer imaging |
US4503551A (en) * | 1982-04-30 | 1985-03-05 | Sri International | Semiconductor-gated ionographic method and apparatus |
US5082756A (en) * | 1989-02-16 | 1992-01-21 | Minolta Camera Kabushiki Kaisha | Photosensitive member for retaining electrostatic latent images |
DE69027398T2 (en) * | 1989-03-16 | 1997-01-30 | Dainippon Printing Co Ltd | IMAGE RECORDING METHOD |
US5298947A (en) * | 1989-11-16 | 1994-03-29 | Dai Nippon Printing Co., Ltd. | Process for recording images on an electrostatic information recording medium with delayed disconnection of charge accumulation voltage |
US5376955A (en) * | 1989-11-29 | 1994-12-27 | Dai Nippon Printing Co., Ltd. | Electrostatic charge information reproducing method with charge transfer by electrostatic discharge |
DE69118656T2 (en) * | 1990-06-06 | 1996-11-14 | Dainippon Printing Co Ltd | DEVICE AND RECORDING CARRIER FOR MOVABLE IMAGES, AND METHOD FOR FAST AND CONTINUOUS IMAGE PHOTOGRAPHY |
US5237345A (en) * | 1990-06-22 | 1993-08-17 | Victor Company Of Japan, Ltd. | Charge latent image information forming apparatus and method of transferring charge latent image information from first recording medium to second recording medium |
CN107290879B (en) * | 2017-08-11 | 2020-06-09 | 深圳市华星光电技术有限公司 | Light shield for liquid crystal display panel |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2833648A (en) * | 1953-07-16 | 1958-05-06 | Haloid Co | Transfer of electrostatic charge pattern |
US3005707A (en) * | 1956-04-16 | 1961-10-24 | Leonard E Ravich | Devices exhibiting persistent internal polarization and methods of utilizing the same |
US3011473A (en) * | 1958-05-01 | 1961-12-05 | Xerox Corp | Xerographic apparatus |
US3268331A (en) * | 1962-05-24 | 1966-08-23 | Itek Corp | Persistent internal polarization systems |
US3337339A (en) * | 1962-10-01 | 1967-08-22 | Xerox Corp | Screen xerography |
US3322538A (en) * | 1962-11-30 | 1967-05-30 | Gen Electric | Electrophotographic process |
US3306160A (en) * | 1964-09-24 | 1967-02-28 | Goodyear Aerospace Corp | Multi-purpose photo sensor |
US3394002A (en) * | 1964-10-21 | 1968-07-23 | Xerox Corp | Charge transfer with liquid layers |
US3545969A (en) * | 1965-07-26 | 1970-12-08 | Ibm | Method of inducing an electrostatic charge pattern on an insulating surface |
US3363552A (en) * | 1965-10-20 | 1968-01-16 | Continental Can Co | Methods and apparatus for minimizing screen patterns in xerography, electrostatic screen process and other forms of printing |
US3449568A (en) * | 1966-12-27 | 1969-06-10 | Xerox Corp | Corona discharge apparatus for creating an electrostatic charge pattern on a xerographic surface |
-
1968
- 1968-10-21 US US769255A patent/US3653890A/en not_active Expired - Lifetime
- 1968-10-21 GB GB49789/68A patent/GB1235758A/en not_active Expired
- 1968-10-24 DE DE1804982A patent/DE1804982C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1804982B2 (en) | 1974-06-20 |
US3653890A (en) | 1972-04-04 |
DE1804982A1 (en) | 1969-08-07 |
DE1804982C3 (en) | 1975-01-16 |
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