GB1477639A - Photo-sensitive combination of elements suited for use in radiography - Google Patents

Photo-sensitive combination of elements suited for use in radiography

Info

Publication number
GB1477639A
GB1477639A GB1072974A GB1072974A GB1477639A GB 1477639 A GB1477639 A GB 1477639A GB 1072974 A GB1072974 A GB 1072974A GB 1072974 A GB1072974 A GB 1072974A GB 1477639 A GB1477639 A GB 1477639A
Authority
GB
United Kingdom
Prior art keywords
emulsion
light
mole
activated
conventional additives
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
Application number
GB1072974A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert NV
Original Assignee
Agfa Gevaert NV
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.)
Filing date
Publication date
Priority to AR25551274A priority Critical patent/AR204100A1/en
Application filed by Agfa Gevaert NV filed Critical Agfa Gevaert NV
Priority to GB1072974A priority patent/GB1477639A/en
Priority to IT8628274A priority patent/IT1024499B/en
Priority to JP10178074A priority patent/JPS5073627A/ja
Priority to CA208,614A priority patent/CA1038684A/en
Priority to BE1006269A priority patent/BE821931A/en
Priority to FR7437848A priority patent/FR2264306B1/fr
Priority to DE19752510068 priority patent/DE2510068A1/en
Publication of GB1477639A publication Critical patent/GB1477639A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K4/00—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/7767—Chalcogenides
    • C09K11/7769—Oxides
    • C09K11/777—Oxyhalogenides
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/16—X-ray, infrared, or ultraviolet ray processes
    • G03C5/17—X-ray, infrared, or ultraviolet ray processes using screens to intensify X-ray images

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Conversion Of X-Rays Into Visible Images (AREA)

Abstract

1477639 X-ray intensifying screens AGFAGEVAERT 7 Aug 1974 [11 March 1974] 10729/74 Heading H5R The rapid non-darkroom processing advantages of fine grain low-Ag halide emulsions together with adequate sensitivity to X-rays are achieved by the combination of single or double sided film with single or double separate or integral intensifying screens fluorescing strongly between 400 and 500 nm wavelength, comprising LaOCl and/or OBr with halogens near atoichiometric, activated by rare earths. For example an AgBr (with 1À5% molar AgI) emulsion with conventional additives coated on both sides of a polymer support at equivalent of 6 g./m.<SP>2</SP> AgNO 3 per side, having a covering power of 60 (max. optical density/g. per dm. of developed Ag), together with a screen on each side comprising LaOBr with 0À002 mole Tb<SP>3+</SP> and 0À0005 mole Yb (Yb to reduce after-glow), in an 82À1% w./w. solids emulsion containing 350 g./m.<SP>2</SP> of phosphor on a polymer support, was exposed to 80 kV X-rays filtered through 6 mm. Al with a Pb test grid. Compared with the same emulsion combined with two prior art screens (phosphors Eu activated BaSO 4 -SrSO 4 and CaWO 4 respectively) the combination described was faster than the prior art and comparable in resolution (square wave response factor). To prevent cross-over blurring (light from screen reaching opposite emulsion) the emulsion support or a layer on it may contain a dye to transmit not more than 30% of the 400-500 nm light, removed or decolorized by the processing baths. Sensitizing dyes for 400-500 nm light may be added to the Ag emulsion together with conventional additives. Reference is made to Specifications 1,319,569 and 1,247,602.
GB1072974A 1973-09-06 1974-03-11 Photo-sensitive combination of elements suited for use in radiography Expired GB1477639A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
AR25551274A AR204100A1 (en) 1973-09-06 1974-01-01 PHOTOSENSITIVE MATERIAL SUITABLE FOR PHOTOGRAPHIC RECORDS
GB1072974A GB1477639A (en) 1974-03-11 1974-03-11 Photo-sensitive combination of elements suited for use in radiography
IT8628274A IT1024499B (en) 1973-09-06 1974-08-31 PHOTOSENSITIVE COMBINATION OF ELEMENTS SUITABLE FOR RADIOGRAPHIC ISO
JP10178074A JPS5073627A (en) 1973-09-06 1974-09-03
CA208,614A CA1038684A (en) 1974-03-11 1974-09-06 Photosensitive combination of elements suited for use in radiography
BE1006269A BE821931A (en) 1974-03-11 1974-11-07 RADIOGRAPHIC RECORDING SYSTEM
FR7437848A FR2264306B1 (en) 1974-03-11 1974-11-14
DE19752510068 DE2510068A1 (en) 1974-03-11 1975-03-07 IMPROVED X-RAY PHOTOGRAPHIC RECORDING MATERIAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1072974A GB1477639A (en) 1974-03-11 1974-03-11 Photo-sensitive combination of elements suited for use in radiography

Publications (1)

Publication Number Publication Date
GB1477639A true GB1477639A (en) 1977-06-22

Family

ID=9973214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1072974A Expired GB1477639A (en) 1973-09-06 1974-03-11 Photo-sensitive combination of elements suited for use in radiography

Country Status (5)

Country Link
BE (1) BE821931A (en)
CA (1) CA1038684A (en)
DE (1) DE2510068A1 (en)
FR (1) FR2264306B1 (en)
GB (1) GB1477639A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4803150A (en) * 1986-12-23 1989-02-07 Eastman Kodak Company Radiographic element exhibiting reduced crossover
US4900652A (en) * 1987-07-13 1990-02-13 Eastman Kodak Company Radiographic element
EP1087258A2 (en) * 1993-12-21 2001-03-28 Imaging Dynamics Corporation Filmless X-ray apparatus and method
EP1411372A1 (en) * 2002-10-15 2004-04-21 Konica Minolta Holdings, Inc. Radiographic image conversion panel and method for manufacturing the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070583A (en) * 1976-12-13 1978-01-24 General Electric Company Rare earth oxyhalide phosphors coactivated with terbium, thulium
CA1196733A (en) * 1981-05-26 1985-11-12 Thomas D. Lyons Radiographic emulsions

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4803150A (en) * 1986-12-23 1989-02-07 Eastman Kodak Company Radiographic element exhibiting reduced crossover
US4900652A (en) * 1987-07-13 1990-02-13 Eastman Kodak Company Radiographic element
EP1087258A2 (en) * 1993-12-21 2001-03-28 Imaging Dynamics Corporation Filmless X-ray apparatus and method
EP1087258A3 (en) * 1993-12-21 2001-05-16 Imaging Dynamics Corporation Filmless X-ray apparatus and method
EP1411372A1 (en) * 2002-10-15 2004-04-21 Konica Minolta Holdings, Inc. Radiographic image conversion panel and method for manufacturing the same
US7053385B2 (en) 2002-10-15 2006-05-30 Konica Minolta Holdings, Inc. Radiographic image conversion panel and method for manufacturing the same

Also Published As

Publication number Publication date
BE821931A (en) 1975-05-07
DE2510068A1 (en) 1975-09-18
FR2264306A1 (en) 1975-10-10
FR2264306B1 (en) 1977-03-25
CA1038684A (en) 1978-09-19

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee