GB945980A - Improvements in and relating to methods and apparatus for developing electrophotographic materials - Google Patents
Improvements in and relating to methods and apparatus for developing electrophotographic materialsInfo
- Publication number
- GB945980A GB945980A GB40060/60A GB4006060A GB945980A GB 945980 A GB945980 A GB 945980A GB 40060/60 A GB40060/60 A GB 40060/60A GB 4006060 A GB4006060 A GB 4006060A GB 945980 A GB945980 A GB 945980A
- Authority
- GB
- United Kingdom
- Prior art keywords
- roller
- web
- liquid
- feed mechanism
- speed
- 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
- G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
- G03D5/00—Liquid processing apparatus in which no immersion is effected; Washing apparatus in which no immersion is effected
- G03D5/06—Applicator pads, rollers or strips
- G03D5/067—Rollers
-
- 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
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
- G03G15/101—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer for wetting the recording material
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Coating Apparatus (AREA)
Abstract
An apparatus for coating liquids on web comprises a bath containing the liquid, a roller mounted to rotate with its lower portion immerse in the liquid, a feed mechanism for traversing the web across the upper portion of the roller, means for holding the web under yielding pressure against the roller, a main motor which is normally effective to operate the feed mechanism and to rotate the roller so that its upper portion travels in the same direction as the web and that the peripheral speed is sufficiently in excess of the linear speed of the web to form and maintain a turbulent head of liquid and a normally ineffective idler motor, operative on stoppage of the main motor, to drive the roller at a slower speed. The web may be held under yielding pressure either by spring-loaded guide rollers or by an air blast and the web is in contact with the roller over an arc of 7 degrees or less. If the feed mechanism, normal a roller driven through a slipping clutch to avoid excess tension, is stopped the roller in the liquid is switched to a lower speed by the use of the idler motor, coupled to the roller by a freewheel connection, which prevents accumulation of liquid on the web.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL279205D NL279205A (en) | 1960-11-22 | ||
GB40060/60A GB945980A (en) | 1960-11-22 | 1960-11-22 | Improvements in and relating to methods and apparatus for developing electrophotographic materials |
FR899480A FR1324122A (en) | 1960-11-22 | 1962-06-01 | Method and apparatus for developing photographic sensitive surfaces |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB40060/60A GB945980A (en) | 1960-11-22 | 1960-11-22 | Improvements in and relating to methods and apparatus for developing electrophotographic materials |
FR899480A FR1324122A (en) | 1960-11-22 | 1962-06-01 | Method and apparatus for developing photographic sensitive surfaces |
Publications (1)
Publication Number | Publication Date |
---|---|
GB945980A true GB945980A (en) | 1964-01-08 |
Family
ID=26195975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB40060/60A Expired GB945980A (en) | 1960-11-22 | 1960-11-22 | Improvements in and relating to methods and apparatus for developing electrophotographic materials |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR1324122A (en) |
GB (1) | GB945980A (en) |
NL (1) | NL279205A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3367791A (en) * | 1966-07-11 | 1968-02-06 | Addressograph Multigraph | Liquid development of electrostatic images |
US3596635A (en) * | 1967-03-16 | 1971-08-03 | Bell & Howell Co | Electrostatographic office copier |
EP0078018A2 (en) * | 1981-10-27 | 1983-05-04 | Coulter Systems Corporation | Method and apparatus for developing electrostatic latent images |
EP0082428A1 (en) * | 1981-12-09 | 1983-06-29 | Coulter Systems Corporation | Toning apparatus and method |
EP0131224A1 (en) * | 1983-07-01 | 1985-01-16 | Coulter Systems Corporation | Toning apparatus and method |
EP0250098A2 (en) * | 1986-05-22 | 1987-12-23 | Xerox Corporation | Liquid development system |
EP0913743A2 (en) * | 1997-11-03 | 1999-05-06 | Xerox Corporation | Method and apparatus for liquid development |
DE102010016085A1 (en) * | 2010-03-23 | 2011-09-29 | OCé PRINTING SYSTEMS GMBH | Method for avoiding deposition of liquid developer transported on roll during standstill time of e.g. digital electrophoretic printing apparatus, involves rotating raster roller at reduced speed and supplying developer liquid at intervals |
-
0
- NL NL279205D patent/NL279205A/xx unknown
-
1960
- 1960-11-22 GB GB40060/60A patent/GB945980A/en not_active Expired
-
1962
- 1962-06-01 FR FR899480A patent/FR1324122A/en not_active Expired
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3367791A (en) * | 1966-07-11 | 1968-02-06 | Addressograph Multigraph | Liquid development of electrostatic images |
US3596635A (en) * | 1967-03-16 | 1971-08-03 | Bell & Howell Co | Electrostatographic office copier |
EP0078018A2 (en) * | 1981-10-27 | 1983-05-04 | Coulter Systems Corporation | Method and apparatus for developing electrostatic latent images |
EP0078018A3 (en) * | 1981-10-27 | 1983-08-17 | Coulter Systems Corporation | Method and apparatus for developing electrostatic latent images |
EP0082428A1 (en) * | 1981-12-09 | 1983-06-29 | Coulter Systems Corporation | Toning apparatus and method |
EP0131224A1 (en) * | 1983-07-01 | 1985-01-16 | Coulter Systems Corporation | Toning apparatus and method |
EP0250098A2 (en) * | 1986-05-22 | 1987-12-23 | Xerox Corporation | Liquid development system |
EP0250098A3 (en) * | 1986-05-22 | 1988-08-31 | Xerox Corporation | Liquid development system |
EP0913743A2 (en) * | 1997-11-03 | 1999-05-06 | Xerox Corporation | Method and apparatus for liquid development |
EP0913743A3 (en) * | 1997-11-03 | 1999-07-28 | Xerox Corporation | Method and apparatus for liquid development |
DE102010016085A1 (en) * | 2010-03-23 | 2011-09-29 | OCé PRINTING SYSTEMS GMBH | Method for avoiding deposition of liquid developer transported on roll during standstill time of e.g. digital electrophoretic printing apparatus, involves rotating raster roller at reduced speed and supplying developer liquid at intervals |
DE102010016085B4 (en) * | 2010-03-23 | 2016-06-02 | Océ Printing Systems GmbH & Co. KG | A method for preventing deposits on a developer liquid transporting roller in an electrophoretic pressure device |
Also Published As
Publication number | Publication date |
---|---|
FR1324122A (en) | 1963-04-12 |
NL279205A (en) |
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