GB1228948A – – Google Patents
GB1228948A – – Google Patents
Info
Publication number
GB1228948A
GB1228948A
GB1228948DA
GB1228948A
GB 1228948 A
GB1228948 A
GB 1228948A
GB 1228948D A
GB1228948D A
GB 1228948DA
GB 1228948 A
GB1228948 A
GB 1228948A
Authority
GB
United Kingdom
Prior art keywords
layer
charge
electrons
imagewise
neutralized
Prior art date
1967-10-18
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
Application number
Priority date (The priority date 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 date listed.)
1967-10-18
Filing date
1968-10-14
Publication date
1971-04-21
1968-10-14
Application filed
filed
Critical
1971-04-21
Publication of GB1228948A
publication
Critical
patent/GB1228948A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
Abstract
1,228,948. Ionographic apparatus. RANK XEROX Ltd. Oct. 14, 1968 [Oct. 18, 1967], No.48549/68. Heading G2H. 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).
GB1228948D
1967-10-18
1968-10-14
Expired
GB1228948A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US67627667A
1967-10-18
1967-10-18
Publications (1)
Publication Number
Publication Date
GB1228948A
true
GB1228948A
(en)
1971-04-21
Family
ID=24713884
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1228948D
Expired
GB1228948A
(en)
1967-10-18
1968-10-14
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)
* Cited by examiner, † Cited by third party
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)
* Cited by examiner, † Cited by third party
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
ES
ES359265A
patent/ES359265A1/en
not_active
Expired
1968-10-17
FR
FR1587025D
patent/FR1587025A/fr
not_active
Expired
Also Published As
Publication number
Publication date
SE354362B
(en)
1973-03-05
ES359265A1
(en)
1970-06-16
US3526767A
(en)
1970-09-01
DE1803667B2
(en)
1976-05-26
DE1803667A1
(en)
1969-05-14
NL6814788A
(en)
1969-04-22
BE722354A
(en)
1969-04-15
FR1587025A
(en)
1970-03-06
BR6801784D0
(en)
1973-03-20
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Legal Events
Date
Code
Title
Description
1971-09-02
PS
Patent sealed [section 19, patents act 1949]
1980-12-17
746
Register noted ‘licences of right’ (sect. 46/1977)
1985-06-19
PCNP
Patent ceased through non-payment of renewal fee
