GB1438870A - Method and apparatus for recording images on electrophoto graphic film - Google Patents
Method and apparatus for recording images on electrophoto graphic filmInfo
- Publication number
- GB1438870A GB1438870A GB2688973A GB2688973A GB1438870A GB 1438870 A GB1438870 A GB 1438870A GB 2688973 A GB2688973 A GB 2688973A GB 2688973 A GB2688973 A GB 2688973A GB 1438870 A GB1438870 A GB 1438870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- electrometer
- photo
- charging
- june
- 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
- G03G15/22—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)
- Combination Of More Than One Step In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
- Photoreceptors In Electrophotography (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Wet Developing In Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
1438870 Electro-photographic process COULTER INFORMATION SYSTEMS Inc 5 June 1973 [8 June 1972] 26889/73 Heading G2H An electro-photographic process comprises charging a photo-conductive film F at 24 to a peak voltage, immediately after charging imagewise exposing (e.g. using a projector 56) and, immediately after exposure, toning at 84; a photo-cell 32 detecting image light intensity in order to control the peak voltage in inverse relation to the light intensity. The process is particularly intended for making high resolution microimages. Preferably the film comprises a Mylar (TRM) base coated with indium oxide then CdS. As shown, differential amplifier 36 is connected to photo-cell 32 and an electrometer 34 to control a relay 42 connecting voltage source 46 to coronade 24. When amp 36 terminates charging a shutter 58 is opened to expose the film and is closed when the charge on an unexposed area sensed by electrometer 34 has decayed to a predetermined level. As soon as exposure is terminated, liquid toner is pumped to a head 84 and applied under the influence of an electrode 92, whose bias is optionally controlled by electrometer 34. A pump 109 removes excess toner and a heater 126 fixes the image, In Fig.3 (not shown) a rotating drum (109) carries the various processing stations past the film.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26078272A | 1972-06-08 | 1972-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1438870A true GB1438870A (en) | 1976-06-09 |
Family
ID=22990603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2688973A Expired GB1438870A (en) | 1972-06-08 | 1973-06-06 | Method and apparatus for recording images on electrophoto graphic film |
Country Status (21)
| Country | Link |
|---|---|
| JP (1) | JPS5852224B2 (en) |
| AR (1) | AR201664A1 (en) |
| AT (1) | AT338097B (en) |
| BE (1) | BE800477A (en) |
| BR (1) | BR7304188D0 (en) |
| CA (1) | CA1032593A (en) |
| CH (1) | CH573133A5 (en) |
| CS (1) | CS195673B2 (en) |
| DD (1) | DD105519A5 (en) |
| DE (1) | DE2328491C2 (en) |
| DK (1) | DK138618B (en) |
| ES (2) | ES415571A1 (en) |
| FR (1) | FR2188204B1 (en) |
| GB (1) | GB1438870A (en) |
| IE (1) | IE37738B1 (en) |
| IL (1) | IL42445A (en) |
| IT (1) | IT985308B (en) |
| LU (1) | LU67744A1 (en) |
| NL (1) | NL7307780A (en) |
| SE (1) | SE389405B (en) |
| ZA (1) | ZA733190B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5868050A (en) * | 1981-10-19 | 1983-04-22 | Fuji Photo Film Co Ltd | Method for recording various kinds of information by electrophotograph |
| US4461561A (en) * | 1982-07-30 | 1984-07-24 | Photon Chroma, Inc. | Apparatus for imaging and developing electrophotographic microformats |
| JPS59100479A (en) * | 1982-12-01 | 1984-06-09 | Fuji Photo Film Co Ltd | Electrophotographic recording head |
| JPS59162580A (en) * | 1983-03-08 | 1984-09-13 | Fuji Photo Film Co Ltd | Process head for electrophotographing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1161473C2 (en) * | 1962-11-26 | 1973-03-15 | Elbe Kamera Ges Mit Beschraenk | Process for the electrophotographic production of images |
| US3371651A (en) * | 1966-11-10 | 1968-03-05 | Rca Corp | Fluid applicator apparatus |
| US3682541A (en) * | 1971-04-13 | 1972-08-08 | Minos Inc | Electrophotographic system employing reciprocating electrophotographic plate |
-
1973
- 1973-05-10 ZA ZA733190A patent/ZA733190B/en unknown
- 1973-06-04 DK DK309473AA patent/DK138618B/en not_active IP Right Cessation
- 1973-06-05 CH CH806773A patent/CH573133A5/xx not_active IP Right Cessation
- 1973-06-05 AR AR248411A patent/AR201664A1/en active
- 1973-06-05 SE SE7307892A patent/SE389405B/en unknown
- 1973-06-05 IL IL42445A patent/IL42445A/en unknown
- 1973-06-05 IE IE891/73A patent/IE37738B1/en unknown
- 1973-06-05 IT IT50441/73A patent/IT985308B/en active
- 1973-06-05 BE BE131901A patent/BE800477A/en not_active IP Right Cessation
- 1973-06-05 AT AT492873A patent/AT338097B/en not_active IP Right Cessation
- 1973-06-05 LU LU67744A patent/LU67744A1/xx unknown
- 1973-06-05 CA CA173,288A patent/CA1032593A/en not_active Expired
- 1973-06-05 NL NL7307780A patent/NL7307780A/xx not_active Application Discontinuation
- 1973-06-05 JP JP48062657A patent/JPS5852224B2/en not_active Expired
- 1973-06-05 ES ES415571A patent/ES415571A1/en not_active Expired
- 1973-06-05 BR BR4188/73A patent/BR7304188D0/en unknown
- 1973-06-05 FR FR7320455A patent/FR2188204B1/fr not_active Expired
- 1973-06-05 DE DE2328491A patent/DE2328491C2/en not_active Expired
- 1973-06-06 GB GB2688973A patent/GB1438870A/en not_active Expired
- 1973-06-07 DD DD171557A patent/DD105519A5/xx unknown
- 1973-06-08 CS CS734168A patent/CS195673B2/en unknown
-
1975
- 1975-10-16 ES ES441861A patent/ES441861A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH573133A5 (en) | 1976-02-27 |
| DK138618B (en) | 1978-10-02 |
| ES415571A1 (en) | 1976-06-01 |
| ATA492873A (en) | 1976-11-15 |
| BR7304188D0 (en) | 1974-07-25 |
| ES441861A1 (en) | 1977-04-01 |
| CS195673B2 (en) | 1980-02-29 |
| FR2188204A1 (en) | 1974-01-18 |
| IE37738L (en) | 1973-12-08 |
| CA1032593A (en) | 1978-06-06 |
| AU5656673A (en) | 1974-12-12 |
| IE37738B1 (en) | 1977-09-28 |
| DE2328491C2 (en) | 1982-12-16 |
| SE389405B (en) | 1976-11-01 |
| IL42445A0 (en) | 1973-08-29 |
| JPS5852224B2 (en) | 1983-11-21 |
| DK138618C (en) | 1979-03-19 |
| BE800477A (en) | 1973-12-05 |
| ZA733190B (en) | 1974-04-24 |
| DE2328491A1 (en) | 1973-12-20 |
| JPS4963442A (en) | 1974-06-19 |
| IT985308B (en) | 1974-11-30 |
| AR201664A1 (en) | 1975-04-08 |
| LU67744A1 (en) | 1975-01-27 |
| AT338097B (en) | 1977-07-25 |
| DD105519A5 (en) | 1974-04-20 |
| FR2188204B1 (en) | 1978-01-06 |
| NL7307780A (en) | 1973-12-11 |
| IL42445A (en) | 1977-04-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |