GB1267404A - Improvements in and relating to electro-photographic copying methods and arrangements - Google Patents
Improvements in and relating to electro-photographic copying methods and arrangementsInfo
- Publication number
- GB1267404A GB1267404A GB24180/69A GB2418069A GB1267404A GB 1267404 A GB1267404 A GB 1267404A GB 24180/69 A GB24180/69 A GB 24180/69A GB 2418069 A GB2418069 A GB 2418069A GB 1267404 A GB1267404 A GB 1267404A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electro
- coating
- liquid
- insulating
- image
- 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
- G03G15/06—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
-
- 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
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
-
- 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
- G03G5/005—Materials for treating the recording members, e.g. for cleaning, reactivating, polishing
-
- 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
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
- G03G15/0435—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
- Color Electrophotography (AREA)
- Printing Methods (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Wet Developing In Electrophotography (AREA)
Abstract
1,267,404. Electro-photographic processes. RICOH K. K. May 12, 1969 [May 21, 1968], No. 24180/69. Heading G2H. A chargeless electro-photographic process comprises coating a photo-conductive sheet with an insulating liquid and thereafter imagewise exposing to produce an electrostatic latent image. The image may then be developed by toner in a liquid carrier. It is stated that such a coating process produces a soft tone developed image, whereas the prior art method of coating after exposure and before development produces a hard tone. Apparatus for selectively coating before or after exposure comprises rollers 9, 10 supported by a pivoted lever 8 and partially immersed in insulating-liquid tanks 6, 7. A sheet 4, transported by a suction carriage 5, is exposed at 4A; being pre- or after-treated with insulating liquid by operating a rod 8a.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3420668 | 1968-05-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1267404A true GB1267404A (en) | 1972-03-22 |
Family
ID=12407668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24180/69A Expired GB1267404A (en) | 1968-05-21 | 1969-05-12 | Improvements in and relating to electro-photographic copying methods and arrangements |
Country Status (6)
Country | Link |
---|---|
US (1) | US3674362A (en) |
BE (1) | BE733415A (en) |
DE (1) | DE1925516B2 (en) |
FR (1) | FR2009022A1 (en) |
GB (1) | GB1267404A (en) |
NL (1) | NL6907564A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4950942A (en) * | 1972-09-14 | 1974-05-17 | ||
DE3062862D1 (en) * | 1979-03-30 | 1983-06-01 | Hoechst Ag | Device for wetting electrophotographic material |
JPS61177478A (en) * | 1985-02-01 | 1986-08-09 | Dainippon Screen Mfg Co Ltd | Device for loading sheet material onto drum |
-
1969
- 1969-05-12 GB GB24180/69A patent/GB1267404A/en not_active Expired
- 1969-05-16 NL NL6907564A patent/NL6907564A/xx unknown
- 1969-05-16 US US825222A patent/US3674362A/en not_active Expired - Lifetime
- 1969-05-20 DE DE19691925516 patent/DE1925516B2/en active Pending
- 1969-05-21 FR FR6916496A patent/FR2009022A1/fr not_active Withdrawn
- 1969-05-21 BE BE733415D patent/BE733415A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
FR2009022A1 (en) | 1970-01-30 |
DE1925516A1 (en) | 1969-12-11 |
US3674362A (en) | 1972-07-04 |
NL6907564A (en) | 1969-11-25 |
DE1925516B2 (en) | 1972-02-10 |
BE733415A (en) | 1969-11-03 |
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