ES359265A1 - Image amplification in ionography by avalanche method - Google Patents
Image amplification in ionography by avalanche methodInfo
- Publication number
- ES359265A1 ES359265A1 ES359265A ES359265A ES359265A1 ES 359265 A1 ES359265 A1 ES 359265A1 ES 359265 A ES359265 A ES 359265A ES 359265 A ES359265 A ES 359265A ES 359265 A1 ES359265 A1 ES 359265A1
- Authority
- ES
- Spain
- Prior art keywords
- layer
- charge
- electrons
- imagewise
- neutralized
- 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
- 230000003321 amplification Effects 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000003199 nucleic acid amplification method Methods 0.000 title 1
- 238000003384 imaging method Methods 0.000 abstract 2
- 239000012212 insulator Substances 0.000 abstract 2
- 230000000979 retarding effect Effects 0.000 abstract 2
- 230000008021 deposition Effects 0.000 abstract 1
- 230000005684 electric field Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
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
- G03G15/054—Apparatus for electrographic processes using a charge pattern using X-rays, e.g. electroradiography
- G03G15/0545—Ionography, i.e. X-rays induced liquid or gas discharge
-
- 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
- G03G5/14—Inert intermediate or cover layers for charge-receiving layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/001—Electric or magnetic imagery, e.g., xerography, electrography, magnetography, etc. Process, composition, or product
- Y10S430/102—Electrically charging radiation-conductive surface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Measurement Of Radiation (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Electron Beam Exposure (AREA)
- Conversion Of X-Rays Into Visible Images (AREA)
Abstract
In an ionographic imaging apparatus in which a stream of charged particles falls on to the surface of an insulator according to imaging radiation, the retarding electric field created by deposited charge is neutralized by simultaneously produced adjacent charges. In one embodiment the pattern of X-rays from a source 14 transmitted by an object 12 passes through a cathode 16, having a photoemissive layer 18, from which electrons are ejected towards an anode 20 in contact with a photoconductive layer 28 coated with an insulating layer 30. With a quenching gas between the electrodes avalanching occurs and the amplified electron image falls on to the insulator 30 previously charged to a positive potential. The positive surface charge is neutralized imagewise as the induced negative charge between layers 28 and 30 is conducted to electrode 20 imagewise through layer 28 thus reducing the retarding field of the deposited charge. In a second embodment Fig. 2, (not shown) the photoconductive layer 28 is omitted and a photo-emissive layer is coated on the opposite side of the anode from the insulative layer. Deposition of negative charge on the insulative layer (58) is compensated by simultaneous emission of electrons from the layer (60). In this case two electrostatic images are formed. The layer (60) may be formed of a low work function material in which case the electrons liberated by X-rays are collected by the electrode in contact with the layer, Figs.3 and 4, (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67627667A | 1967-10-18 | 1967-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES359265A1 true ES359265A1 (en) | 1970-06-16 |
Family
ID=24713884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES359265A Expired ES359265A1 (en) | 1967-10-18 | 1968-10-17 | Image amplification in ionography by avalanche method |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3526767A (en) |
| BE (1) | BE722354A (en) |
| BR (1) | BR6801784D0 (en) |
| ES (1) | ES359265A1 (en) |
| FR (1) | FR1587025A (en) |
| GB (1) | GB1228948A (en) |
| NL (1) | NL6814788A (en) |
| SE (1) | SE354362B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3774029A (en) * | 1972-06-12 | 1973-11-20 | Xonics Inc | Radiographic system with xerographic printing |
| US3813546A (en) * | 1973-02-28 | 1974-05-28 | Xonics Inc | Process of making a subtracted image radiographic record |
| US3831027A (en) * | 1973-09-28 | 1974-08-20 | Xonics Inc | Imaging gas for improved resolution in imaging chamber of electron radiography system |
| US4038943A (en) * | 1974-06-05 | 1977-08-02 | Xerox Corporation | Signal amplification by charging and illuminating a partially developed latent electrostatic image |
| DE2703426A1 (en) * | 1977-01-28 | 1978-08-03 | Agfa Gevaert Ag | METHOD AND DEVICE FOR SCREED RAY SUPPRESSION IN ROENTGEN IONOGRAPHY |
| JP5563995B2 (en) * | 2011-01-17 | 2014-07-30 | 日本電子株式会社 | Data processing method in electronic probe microanalyzer and electronic probe microanalyzer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2900515A (en) * | 1956-03-16 | 1959-08-18 | Edward L Criscuolo | Radiography by gas ionization |
-
1967
- 1967-10-18 US US676276A patent/US3526767A/en not_active Expired - Lifetime
-
1968
- 1968-08-26 BR BR201784/68A patent/BR6801784D0/en unknown
- 1968-10-14 GB GB1228948D patent/GB1228948A/en not_active Expired
- 1968-10-15 BE BE722354D patent/BE722354A/xx not_active IP Right Cessation
- 1968-10-15 SE SE13862/68A patent/SE354362B/xx unknown
- 1968-10-16 NL NL6814788A patent/NL6814788A/xx not_active Application Discontinuation
- 1968-10-17 FR FR1587025D patent/FR1587025A/fr not_active Expired
- 1968-10-17 ES ES359265A patent/ES359265A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1228948A (en) | 1971-04-21 |
| NL6814788A (en) | 1969-04-22 |
| US3526767A (en) | 1970-09-01 |
| BE722354A (en) | 1969-04-15 |
| BR6801784D0 (en) | 1973-03-20 |
| FR1587025A (en) | 1970-03-06 |
| SE354362B (en) | 1973-03-05 |
| DE1803667A1 (en) | 1969-05-14 |
| DE1803667B2 (en) | 1976-05-26 |
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