DE334878C - Atrium-free x-ray plate - Google Patents

Atrium-free x-ray plate

Info

Publication number
DE334878C
DE334878C DE1916334878D DE334878DD DE334878C DE 334878 C DE334878 C DE 334878C DE 1916334878 D DE1916334878 D DE 1916334878D DE 334878D D DE334878D D DE 334878DD DE 334878 C DE334878 C DE 334878C
Authority
DE
Germany
Prior art keywords
layer
free
rays
atrium
ray plate
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
DE1916334878D
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.)
HERMANN ENGELKEN DR
Original Assignee
HERMANN ENGELKEN DR
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 HERMANN ENGELKEN DR filed Critical HERMANN ENGELKEN DR
Application granted granted Critical
Publication of DE334878C publication Critical patent/DE334878C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/76Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Conversion Of X-Rays Into Visible Images (AREA)

Description

Lichthoffreie Röntgenplatte. Bei Röntgenaufnahmen wird in vielen Fällen zur Abkürzung der Belichtungszeit ein Verstärkungsschirm benutzt, dessen Schicht durch die Röntgenstrahlen gemäß deren Intensität zum Selbstleuchten gebracht wird. Die Schicht des Verstärkungsschirmes wird mit der empfindlichen Schicht der photographischen Platte in möglichst innige Berührung gebracht; und es wirken nun während der Exposition auf die photographische Schicht einmal die Röntgenstrahlen selbst, daneben aber das im Verstärkungsschirm gleichzeitig entstehende selbstleuchtende Bild, wobei diesem die bei weitem stärkere Wirksamkeit eigen ist.Atrial-free X-ray plate. X-rays are used in many cases an intensifying screen is used to shorten the exposure time, its layer is made to illuminate itself by the X-rays according to their intensity. The intensifying screen layer becomes the photographic sensitive layer Plate brought into as close contact as possible; and it will now work during exposure the X-rays themselves on the photographic layer, but next to them the self-luminous image emerging simultaneously in the intensifying screen, where this is by far more effective.

Während nun die Röntgenstrahlen selbst der Brechung und Reflexion nicht unterliegen, erzeugen die vom Verstärkungsschirm auf die Platte geworfenen Lichtstrahlen durch seitliche Ausbreitung innerhalb der Schicht, sowie durch unregelmäßige Brechung und Spiegelung im Schichtträger - in der Regel Glas - im Negativ Lichthöfe welche besonders bei ausgiebigerer Belichtung und verhältnismäßig harter Röntgenstrahlung einen großen Teil der Schuld daran tragen, daß mit Verstärkungsschirm aufgenommene-Bilder an Klarheit den Aufnahmen ohne Verstärkungsschirm nachstehen.While now the x-rays themselves are refractive and reflected do not succumb to those thrown onto the plate by the intensifying screen Light rays through lateral spreading within the layer, as well as through irregular ones Refraction and reflection in the layer carrier - usually glass - halos in the negative which especially with extensive exposure and relatively hard X-rays Much to blame for intensifying screen-captured images are inferior in clarity to recordings without an intensifying screen.

Diesen störenden Erscheinungen soll eine besonders zur Aufnahme bestimmte Platte begegnen.These disturbing phenomena should be specially designed for recording Counter plate.

Diese soll in der empfindlichen Schicht selbst oder zwischen Schicht und Schichtträger Stoffe enthalten, die den Röntgenstrahlen kein Hindernis bieten, wohl aber die vom Verstärkungsschirm ausgehenden, in der Schicht und vom Schichtträger unregelmäßig gebrochenen und zurückgeworfenen Lichtstrahlen unschädlich machen. Diese Stoffe dürfen aber, und darin besteht das Wesen der Erfindung, die lichtempfindliche Schicht nicht sensibilisieren. Diese Stoffe dürfen selbstverständlich auch bei der Entwicklung nicht stören und müssen sich aus der Schicht wieder entfernen lassen.This should be in the sensitive layer itself or between layers and substrates contain substances that do not pose an obstacle to X-rays, but those emanating from the reinforcing screen, in the layer and from the layer support Make irregularly refracted and reflected light rays harmless. However, and this is the essence of the invention, these substances are allowed to be light-sensitive Do not sensitize the layer. These substances can of course also be used in the Do not disturb development and must be able to be removed from the layer again.

Als solche Stoffe; die in der einfachsten Ausführung der empfindlichen Schicht einverleibt werden können, eignen sich beispielsweise gelbe Farbstoffe, jedoch mit Ausnahme der sogenannten Sensibilisierungsfarbstoffe. Diese vermindern zwar auch die Lichtdurchlässigkeit der Schicht, erhöhen aber gleichzeitig deren Empfindlichkeit vorwiegend gerade für diejenige Wellenlängen des vom Verstärkungsschirm ausgehenden Lichtes, welche sie verschlucken, so daß die zu bekämpfenden unregelmäßig reflektierten Strahlen nicht, wie es der Zweck der Platten erfordert, unschädlich gemacht, sondern zu gesteigerter Wirksamkeit gebracht werden würden.As such substances; those in the simplest execution of the sensitive ones Layer can be incorporated, for example, yellow dyes are suitable, but with the exception of the so-called sensitizing dyes. These diminish it also increases the transparency of the layer, but increases it at the same time Sensitivity mainly for the wavelengths of the intensifying screen outgoing light, which they swallow, so that those to be combated are irregular reflected rays are not harmless, as the purpose of the panels requires made, but would be brought to increased effectiveness.

Claims (1)

PAT EN"r- ANsPRÜCH'. Lichthoffreie Röntgenplatte mit für Röntgenstrahlen durchlässigen, aber für aktinische Lichtstrahlen vermindert durchlässigen Stoffen in der empfindlichen Schicht oder zwischen Schicht und Schichtträger, dadurch gekennzeichnet, daß die Stoffe keine sensibilisierende Wirkung auf das Bromsilber haben.PAT EN "r- ANsPRÜCH '. Atrium-free X-ray plate with for X-rays permeable, but less permeable substances for actinic light rays in the sensitive layer or between layer and substrate, characterized in that that the substances have no sensitizing effect on the bromide silver.
DE1916334878D 1916-07-11 1916-07-11 Atrium-free x-ray plate Expired DE334878C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE334878T 1916-07-11

Publications (1)

Publication Number Publication Date
DE334878C true DE334878C (en) 1921-03-21

Family

ID=6218715

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1916334878D Expired DE334878C (en) 1916-07-11 1916-07-11 Atrium-free x-ray plate

Country Status (1)

Country Link
DE (1) DE334878C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237008A (en) * 1961-01-19 1966-02-22 Eastman Kodak Co Roomlight handling radiographic element including an x-ray sensitive layer overcoated with a dye desensitized silver halide emulsion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237008A (en) * 1961-01-19 1966-02-22 Eastman Kodak Co Roomlight handling radiographic element including an x-ray sensitive layer overcoated with a dye desensitized silver halide emulsion

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