DE755315C - Sharpening x-ray film or screen - Google Patents

Sharpening x-ray film or screen

Info

Publication number
DE755315C
DE755315C DEC48500D DEC0048500D DE755315C DE 755315 C DE755315 C DE 755315C DE C48500 D DEC48500 D DE C48500D DE C0048500 D DEC0048500 D DE C0048500D DE 755315 C DE755315 C DE 755315C
Authority
DE
Germany
Prior art keywords
screen
sharpening
ray film
layer
tiede
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
DEC48500D
Other languages
German (de)
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.)
Chemische Fabrik Von Heyden AG
Original Assignee
Chemische Fabrik Von Heyden 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
Application filed by Chemische Fabrik Von Heyden AG filed Critical Chemische Fabrik Von Heyden AG
Priority to DEC48500D priority Critical patent/DE755315C/en
Application granted granted Critical
Publication of DE755315C publication Critical patent/DE755315C/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Luminescent Compositions (AREA)

Description

Die Erfindung betrifft neue Mittel, um die Zeichenschärfe von Röntgenversterkungsfolien oder -schirmen zu verbessern. Zu diesem Zweck färbte man bisher die aktive Schicht oder deren Träger mit löslichem Farbstoffen an oder verwandte eine lichtabsarbierende Trägerwand. Hierdurch erreichte man die Absorption eines Teils der verzeichnenden Streustrahlung.The invention relates to new means of increasing the definition of X-ray intensifying films or screens to improve. For this purpose, the active layer has hitherto been colored or their carrier with soluble dyes or related a light-absorbing one Support wall. This achieved the absorption of part of the index Scattered radiation.

Gemäß der Erfindung wird eine wesentliche Verbesserung der bisherigen. Röntgenfolien oder -schirme dadurch erzielt, daß man hinter der üblichen aktiven Schicht des. Schirmes oder der Folie einen Luminophor anbringt. Man arbeitet also z. B. wie folgt: Auf eine Glasplatte wird mit Hilfe eines Bindemittels, wie z. B. Acetylcellulose oder einem ähnlichen häutchenbildenden Stoff, die photoaktive Luminesoenzschicht, z. B. Calciumwolframat, in dünner Schicht gegossen. Nachdem diese Schicht (C in der ZeichnuTxg) erstarrt ist, wird mit Hilfe von Gelatine oder ähnlichen Stoffen, worin je Quadratzentimeter etwa 0,4 9 rotleuchtende Zink-Kadniium-Lumineszenzfarbe, welche Metalle, wie Kupfer, Mangan usw. bzw. deren Verbindungen, als Aktivatoren enthält, aufgeschlemmt sind, eine weitere Schicht I' gegossen. Auf dieser Schicht wird in üblicher Weise eine Trägerpappe A befestigt.According to the invention is a significant improvement on the previous. X-ray films or screens achieved by being behind the usual active Layer of the screen or the film attaches a luminophore. So you work z. B. as follows: On a glass plate with the help of a binder, such as. B. Acetyl cellulose or a similar membrane-forming substance, the photoactive luminescent layer, z. B. calcium tungstate, poured in a thin layer. After this layer (C in the drawing has solidified, is done with the help of gelatine or similar substances, in which per square centimeter about 0.4 9 glowing red zinc-cadniium luminescent paint, which metals, such as copper, manganese, etc. or their compounds, as activators contains, are suspended, another layer I 'poured. On this layer a cardboard backing A is attached in the usual way.

An Stelle von Calciumwolframatkann mau selbstverständlich die verschiedensten unter dem Einfluß von Röntgenstrahlen leuchtenden Mittel verwenden. Als Luminophore für die hinter der aktiven Schicht anzubringende Leuchtschicht eignen sich besonders die rotleuchtenden Massen, die aus dem Schrifttum bekannt sind, wie z. B. die Borsäurephosphore, Lum.inophore der 2. Gruppe des Periodischen Systems, wie z. B. Erdalkalioxyde, -selenide und -sulfide, ferner Zinksulfid und Kadmiumsulfid und Zinksilicatphosphore. Einen direkten Einfluß auf die photographische Schicht sollen diese-.uniinophore nicht oder nur in untergeordhetem Maße ausüben.Instead of calcium tungstate, you can of course use a wide variety of substances use luminous means under the influence of X-rays. As luminophores for the luminous layer to be applied behind the active layer are particularly suitable the glowing red masses known from literature, such as B. the boric acid phosphors, Lum.inophore of the 2nd group of the Periodic Table, such as. B. alkaline earth oxides, selenides and sulfides, also zinc sulfide and cadmium sulfide and zinc silicate phosphors. A These uni-inophores are not intended to have a direct influence on the photographic layer or only exercise it to a subordinate extent.

,Dwrch die hinter der aktiven Schicht angebrachten Luminophore wird einesteils schädliche ,Streustrahlung vernichtet, anderenteils auch die Phosphoreszenz der aktiven Schicht ausgeleuchtet.Because of the luminophores placed behind the active layer on the one hand harmful, scattered radiation destroyed, on the other hand also the phosphorescence the active layer is illuminated.

Claims (3)

PATENTANSPRUCH: Scharfzeichnende Röntgenfolie oder -schirm, dadurch gekennzeichnet, daß hinter der üblichen aktiven Schicht eine ,veibere Schicht angebracht ist, die einen im wesentlichen rot aufleuchtenden Lttminophor enthält. PATENT CLAIM: Sharpening X-ray film or screen, thereby characterized in that behind the usual active layer a, outer layer is applied which contains an essentially red litminophore. Zur Abgrenzung des Erfindungsgegenstands vem Stand der Technik sind im Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden: Deutsche Patentschriften Nr. 438 673, 570838, 586401; 'britische Patentschrift Nr. 181 333; -.französische Patentschrift \Tr. 435 253; Pringsheim, Phosphoreszenz und Fluoreszenz, 1928, To delimit the subject matter of the invention from the state of the art, the following publications were taken into account in the grant procedure: German Patent Specifications No. 438 673, 570838, 586401; British Patent No. 181,333; - French patent specification \ Tr. 435 253; Pringsheim, Phosphorescence and Fluorescence, 1928, 3. Aufl., S. 178, 266 bis 267; Tiede und Thomaschek, Zeitschrift für anorganische Chemie, 147, S. i i i ; Tiede und Reinicke, Berichte d. deutschen chem. Ges., 59, S. 666.3rd ed., Pp. 178, 266 to 267; Tiede and Thomaschek, Zeitschrift für inorganic Chemie, 147, p. Iii; Tiede and Reinicke, reports d. German chem. Ges., 59, p. 666.
DEC48500D 1933-11-14 1933-11-14 Sharpening x-ray film or screen Expired DE755315C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC48500D DE755315C (en) 1933-11-14 1933-11-14 Sharpening x-ray film or screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC48500D DE755315C (en) 1933-11-14 1933-11-14 Sharpening x-ray film or screen

Publications (1)

Publication Number Publication Date
DE755315C true DE755315C (en) 1952-05-19

Family

ID=7026773

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC48500D Expired DE755315C (en) 1933-11-14 1933-11-14 Sharpening x-ray film or screen

Country Status (1)

Country Link
DE (1) DE755315C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011277B (en) * 1956-01-07 1957-06-27 Elisabeth Christine Petri X-ray film with improved definition
DE975450C (en) * 1949-07-20 1961-11-30 Sylvania Electric Prod Electroluminescent lamp
DE1123776B (en) * 1959-05-23 1962-02-15 Philips Patentverwaltung Process for partially covering the glass wall of electrical discharge tubes with a phosphor layer and arrangement for carrying out the process
DE3630983A1 (en) * 1985-09-11 1987-03-19 Ricoh Kk ELECTROLUMINESCENT DEVICES AND METHOD FOR THEIR PRODUCTION

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR435253A (en) * 1911-08-07 1912-02-26 Armand Louis Paul Roubertie New fluorescent screens for fluoroscopic uses
GB181333A (en) * 1921-06-10 1923-01-11 Antoine Auguste Guntz Improvements in luminescent products
DE438673C (en) * 1922-08-02 1926-12-21 Leon Lilienfeld Dr Process for the production of fluorescent screens for X-rays containing zinc sulfide
DE570838C (en) * 1929-01-06 1933-02-22 Chem Fab Von Heyden Akt Ges Method of lighting rooms for x-ray fluoroscopy
DE586401C (en) * 1935-12-19 Otto Berning & Co See-through, angle and overhead viewfinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE586401C (en) * 1935-12-19 Otto Berning & Co See-through, angle and overhead viewfinder
FR435253A (en) * 1911-08-07 1912-02-26 Armand Louis Paul Roubertie New fluorescent screens for fluoroscopic uses
GB181333A (en) * 1921-06-10 1923-01-11 Antoine Auguste Guntz Improvements in luminescent products
DE438673C (en) * 1922-08-02 1926-12-21 Leon Lilienfeld Dr Process for the production of fluorescent screens for X-rays containing zinc sulfide
DE570838C (en) * 1929-01-06 1933-02-22 Chem Fab Von Heyden Akt Ges Method of lighting rooms for x-ray fluoroscopy

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975450C (en) * 1949-07-20 1961-11-30 Sylvania Electric Prod Electroluminescent lamp
DE1011277B (en) * 1956-01-07 1957-06-27 Elisabeth Christine Petri X-ray film with improved definition
DE1123776B (en) * 1959-05-23 1962-02-15 Philips Patentverwaltung Process for partially covering the glass wall of electrical discharge tubes with a phosphor layer and arrangement for carrying out the process
DE3630983A1 (en) * 1985-09-11 1987-03-19 Ricoh Kk ELECTROLUMINESCENT DEVICES AND METHOD FOR THEIR PRODUCTION

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