FR2308128A1 - Intensifying screens for X-ray films - with surface layer of protruding particles of PTFE etc. to avoid frictional damage - Google Patents

Intensifying screens for X-ray films - with surface layer of protruding particles of PTFE etc. to avoid frictional damage

Info

Publication number
FR2308128A1
FR2308128A1 FR7611104A FR7611104A FR2308128A1 FR 2308128 A1 FR2308128 A1 FR 2308128A1 FR 7611104 A FR7611104 A FR 7611104A FR 7611104 A FR7611104 A FR 7611104A FR 2308128 A1 FR2308128 A1 FR 2308128A1
Authority
FR
France
Prior art keywords
ray
intensifying screens
screens
surface layer
intensifying
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.)
Granted
Application number
FR7611104A
Other languages
French (fr)
Other versions
FR2308128B1 (en
Inventor
Willy Karel Van Landeghem
Andre Roger Suys
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 AG
Original Assignee
Agfa Gevaert AG
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 claimed from GB15510/75A external-priority patent/GB1534154A/en
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Priority claimed from GB1551076A external-priority patent/GB1515424A/en
Publication of FR2308128A1 publication Critical patent/FR2308128A1/en
Application granted granted Critical
Publication of FR2308128B1 publication Critical patent/FR2308128B1/fr
Granted 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
    • 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

Abstract

Fluorescent image-intensifying screens for X-ray pictures comprise particles of a fluorescent material dispersed in a binder layer, and distributed over the surface are a number of protruding parts, at least the surface of which have a static coefficient of friction against steel of less than 0.50 at room temp. Used for increasing the image density of X-ray pictures against silver halide emulsion films without increasing the intensity of the X-ray radiation. The screens are esp. useful in high speed X-ray machines in which the film and intensifying screen are subjected to rapid mutual movement which with prior art intensifying screens can give rise to white friction marks known as 'drop outs' on the surface of the film.
FR7611104A 1975-04-15 1976-04-13 Intensifying screens for X-ray films - with surface layer of protruding particles of PTFE etc. to avoid frictional damage Granted FR2308128A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB15510/75A GB1534154A (en) 1975-04-15 1975-04-15 Radiographic intensifying screens
GB1551076A GB1515424A (en) 1975-04-17 1976-04-15 Solid-liquid waste incinerator

Publications (2)

Publication Number Publication Date
FR2308128A1 true FR2308128A1 (en) 1976-11-12
FR2308128B1 FR2308128B1 (en) 1978-05-05

Family

ID=26251342

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7611104A Granted FR2308128A1 (en) 1975-04-15 1976-04-13 Intensifying screens for X-ray films - with surface layer of protruding particles of PTFE etc. to avoid frictional damage

Country Status (1)

Country Link
FR (1) FR2308128A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021429A2 (en) * 1979-06-29 1981-01-07 Hoechst Aktiengesellschaft Photopolymerisable copy material and process for making relief images
EP0021428A1 (en) * 1979-06-29 1981-01-07 Hoechst Aktiengesellschaft Light sensitive positive copying material with a matt surface
EP0103874A2 (en) * 1982-09-20 1984-03-28 E.I. Du Pont De Nemours And Company Flexible, nonstaining topcoat for an x-ray intensifying screen
EP0107207A2 (en) * 1982-10-26 1984-05-02 Fuji Photo Film Co., Ltd. Radiation image storage panel
EP0124683A2 (en) * 1983-02-04 1984-11-14 Fuji Photo Film Co., Ltd. Radiation image storage panel
EP0179555A1 (en) * 1984-08-31 1986-04-30 Minnesota Mining And Manufacturing Company Photographic elements sensitive to near infrared
EP0886282A1 (en) * 1997-06-19 1998-12-23 Fuji Photo Film Co., Ltd. Radiographic intensifying screen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648013A (en) * 1952-01-21 1953-08-04 Du Pont Fluorescent screen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648013A (en) * 1952-01-21 1953-08-04 Du Pont Fluorescent screen

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021429A2 (en) * 1979-06-29 1981-01-07 Hoechst Aktiengesellschaft Photopolymerisable copy material and process for making relief images
EP0021428A1 (en) * 1979-06-29 1981-01-07 Hoechst Aktiengesellschaft Light sensitive positive copying material with a matt surface
EP0021429A3 (en) * 1979-06-29 1981-12-16 Hoechst Aktiengesellschaft Photopolymerisable copy material and process for making relief images
EP0103874A2 (en) * 1982-09-20 1984-03-28 E.I. Du Pont De Nemours And Company Flexible, nonstaining topcoat for an x-ray intensifying screen
EP0103874A3 (en) * 1982-09-20 1984-07-25 E.I. Du Pont De Nemours And Company Flexible, nonstaining topcoat for an x-ray intensifying screen
EP0107207A2 (en) * 1982-10-26 1984-05-02 Fuji Photo Film Co., Ltd. Radiation image storage panel
EP0107207A3 (en) * 1982-10-26 1985-08-21 Fuji Photo Film Co., Ltd. Radiation image storage panel
EP0124683A2 (en) * 1983-02-04 1984-11-14 Fuji Photo Film Co., Ltd. Radiation image storage panel
EP0124683A3 (en) * 1983-02-04 1985-08-21 Fuji Photo Film Co., Ltd. Radiation image storage panel
EP0179555A1 (en) * 1984-08-31 1986-04-30 Minnesota Mining And Manufacturing Company Photographic elements sensitive to near infrared
EP0886282A1 (en) * 1997-06-19 1998-12-23 Fuji Photo Film Co., Ltd. Radiographic intensifying screen

Also Published As

Publication number Publication date
FR2308128B1 (en) 1978-05-05

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Legal Events

Date Code Title Description
ST Notification of lapse